docs: update README and CHANGELOG for v1.4.0

Introduces the `godeez download track <ID>` command, allowing users to download individual songs directly.

Single tracks are saved into a "Singles" folder by default to keep them organized. The README has been updated with documentation and examples for this new functionality.

CHANGELOG.md

@@ -5,21 +5,81 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.4.0] - 2026-03-01
+
+### Added
+
+- Automatic database migration from `~/.godeez/tracks.db` to `~/Music/GoDeez/.tracks.db`.
+
+### Changed
+
+- Configuration now uses `DEEZER_ARL` environment variable (replaces `config.toml`).
+- Database moved from `~/.godeez/tracks.db` to `~/Music/GoDeez/.tracks.db`.
+- Show warning count in download summary.
+
+### Removed
+
+- `config.toml` configuration file and `~/.godeez` directory.
+- `--config` flag from CLI.
+- `secret_key` and `output_dir` configuration options.
+- Watcher feature (`watch` subcommands).
+
+### Fixed
+
+- Track number zero-padding for correct file sorting.
+
+## [1.3.0] - 2025-09-11
+
+### Added
+
+- Add new `track` command to download individual songs.
+- Add `--genre` flag to fetch and embed genre information into file metadata tags.
+
+### Fixed
+
+- Handle empty media resources gracefully to prevent crashes.
+
+## [1.2.0] - 2025-08-18
+
+### Added
+
+- Add new `artist` command to download an artist’s top tracks.
+- Add `--limit` flag for the `artist` command to restrict the number of tracks.
+- Add `--strict` flag for downloads: fail if the requested quality is unavailable.
+
+### Changed
+
+- Set default download quality to **MP3 320kbps**.
+
+### Removed
+
+- Remove `--quality=best` option. Fallback to lower quality is now the default behavior; use the `--strict` flag to prevent fallback.
+
+### Fixed
+
+- Handle error when `SNG_CONTRIBUTORS` metadata is empty.
+
+## [1.1.1] - 2025-06-16
+
+### Fixed
+
+- Restore ability to download tracks without a Deezer Premium account (limited to **MP3 128kbps** for free accounts).
+
 ## [1.1.0] - 2025-05-19
 
 ### Added
-- Support for downloading full albums and playlists with more than 40 tracks (previous limit removed).
-- Option to fetch and embed **BPM** and **musical key** into metadata tags.
-- New local **database system** (`tracks.db`) to track downloaded files and avoid re-downloading, even if files are renamed or moved.
-- Improved CLI **output formatting** for a cleaner and more informative user experience.
 
+- Support downloading full albums and playlists with more than 40 tracks (previous limit removed).
+- Fetch and embed **BPM** and **musical key** into metadata tags.
+- Add local **database system** (`tracks.db`) to track downloaded files and avoid re-downloading, even if files are renamed or moved.
+- Improve CLI **output formatting** for a cleaner and more informative user experience.
 
 ### Changed
-- The `.godeez` file in the user’s home directory has been replaced by a `.godeez/` directory.  
-  It now stores both `config.toml` and the internal `tracks.db`.  
-  If you're upgrading from an older version, move your existing config into `.godeez/config.toml`.
-- Simplified `config.toml`: `iv` and `license_token` are no longer required.
-- Cleanup logic: corrupted or incomplete files are now automatically deleted on download failure.
+
+- Replace the `godeez` file in the user’s home directory with a `.godeez/` directory, which now stores both `config.toml` and `tracks.db`.  
+  👉 If upgrading, move your existing config into `.godeez/config.toml`.
+- Simplify `config.toml`: remove the need for `iv` and `license_token`.
+- Automatically delete corrupted or incomplete files on download failure.
 
 ## [1.0.0] - 2024-10-15
 

README.md

@@ -13,85 +13,68 @@ A simple Go tool for downloading music from [Deezer](https://www.deezer.com).
 [Configuration](#configuration) •
 [Usage](#usage) •
 [Contributing](#contributing) •
+[Support](#⭐-support-the-project) •
 [License](#license)
 
 </div>
 
 ## Features
 
-* Download playlists and albums from Deezer
-* Select audio quality: MP3 128kbps, MP3 320kbps, or FLAC
-* Automatically adds metadata tags to downloaded files
-* Fetch and tag songs with BPM and musical key
-* Smart skip system: avoids re-downloading already existing files using hashes and metadata
-* Cross-platform support (works on Windows, macOS, and Linux)
-* Simple and easy-to-use CLI
+- Download playlists, albums, artists’ top tracks, and individual tracks
+- Choose audio quality: **MP3 128kbps**, **MP3 320kbps** (default), or **FLAC** (⚠️ non‑premium accounts are limited to 128kbps)
+- Automatically embed metadata tags (artist, album, title, artwork, etc.)
+- Fetch and tag songs with **BPM**, **musical key**, and **genre**
+- Skip already-downloaded files using hashes and metadata
+- Support Windows, macOS, and Linux
+- Provide a simple, easy-to-use CLI
 
 ## Installation
 
-To install **GoDeez**, simply download the latest binary for your platform from the Releases page.
+To install **GoDeez**, download the latest binary for your platform from the [Releases](https://github.com/mathismqn/godeez/releases) page.
 
 1. Go to the [Releases](https://github.com/mathismqn/godeez/releases) page.
 2. Download the appropriate binary for your operating system (Windows, macOS, or Linux).
-3. Move the binary to a directory included in $PATH for easy access (optional but recommended).
+3. (Optional) Move the binary to a directory included in `$PATH` for easier access.
 
 Example (Linux/macOS):
+
 ```bash
 # Move the downloaded binary to /usr/local/bin for easy access from anywhere
-mv godeez-1.1.0-linux-amd64 /usr/local/bin/godeez
+mv godeez-1.4.0-linux-amd64 /usr/local/bin/godeez
 ```
 
 ## Configuration
 
-The first time you run **GoDeez**, a configuration directory named `.godeez` will be automatically created in your home directory (`$HOME` on Linux/macOS, `%USERPROFILE%` on Windows).
+**GoDeez** requires a Deezer ARL cookie for authentication. Set it as an environment variable:
 
-Inside this directory:
-- `config.toml`: main configuration file which contains several important variables that you need to fill out manually
-- `tracks.db`: internal database used to track downloaded files and prevent duplicates
-
-### Steps to configure
-
-1. Run the application for the first time: this creates the `.godeez` directory and the `config.toml` file inside it.
-2. Edit the `config.toml` file with a text editor to set the required values.
-
-### Variables to configure
-
-Here are the key variables you need to set in `config.toml`:
-
-1. `arl_cookie`
-* **What is it?**: The `arl_cookie` is a session cookie used for authentication with Deezer. Without this cookie, the downloader cannot access your account to retrieve playlists, albums, or songs.
-* **How to retrieve it**:
-	1.	Open your browser and log in to your Deezer account.
-	2.	Open the Developer Tools (right-click on the page and select “Inspect” or press F12).
-	3.	Navigate to the Application tab (in Chrome/Edge) or Storage tab (in Firefox).
-	4.	In the left panel, look for Cookies and select `https://www.deezer.com`.
-	5.	Find the arl cookie and copy its value.
-
-2. `secret_key`
-* **What is it?**: The `secret_key` is a cryptographic value used to decrypt Deezer’s media files.
-* **How to retrieve it?**: While we cannot provide the specific secret_key in this documentation, it can be found online through various sources or developer communities that focus on Deezer.
-
-3. `output_dir` (optional)
-* **What is it?**: The `output_dir` is the path where downloaded music files will be saved.
-* **Default**: If left empty, it defaults to `~/Music/GoDeez`.
-* **Note**: Once set, it's recommended not to change it, as this may interfere with the skip system that relies on consistent file paths and hash indexing to detect already downloaded songs.
-
-### Example
-
-Here's an example of a minimal `config.toml` you can customize:
-```toml
-# ~/.godeez/config.toml
-
-arl_cookie = 'your_arl_cookie_here'
-secret_key = 'your_secret_key_here'
-output_dir = ''  # optional
+```bash
+export DEEZER_ARL=”your_arl_cookie_here”
 ```
 
+To make it persistent, add the line above to your shell profile (`~/.bashrc`, `~/.zshrc`, etc.).
+
+### How to retrieve your ARL cookie
+
+1. Open your browser and log in to your [Deezer](https://www.deezer.com) account.
+2. Open the Developer Tools (right-click on the page and select “Inspect” or press F12).
+3. Navigate to the **Application** tab (Chrome/Edge) or **Storage** tab (Firefox).
+4. In the left panel, look for **Cookies** and select `https://www.deezer.com`.
+5. Find the `arl` cookie and copy its value.
+
+> **Note:** The ARL cookie may expire after some time. If you get authentication errors, retrieve a fresh cookie using the steps above.
+
+### Output directory
+
+Downloaded files are saved to `~/Music/GoDeez`. The download database (`.tracks.db`) is stored alongside your music in the output directory.
+
+> **Upgrading from v1.3.0?** The `~/.godeez` directory and `config.toml` are no longer used. Set the `DEEZER_ARL` environment variable instead. Your existing database will be migrated automatically on first run.
+
 ## Usage
 
 ### CLI Overview
 
-When you run `godeez` without any additional commands, you’ll see a general help menu:
+Running `godeez` without arguments shows the help menu:
+
 ```bash
 GoDeez is a tool to download music from Deezer
 
@@ -104,14 +87,13 @@ Available Commands:
   help        Help about any command
 
 Flags:
-      --config string   config file (default ~/.godeez/config.toml)
-  -h, --help            help for godeez
+  -h, --help   help for godeez
 
 Use "godeez [command] --help" for more information about a command.
 ```
-This provides an overview of the available commands and flags.
 
-To download music, you need to use the download command. Here’s how the CLI looks when you run `godeez download`:
+### Download commands
+
 ```bash
 Download songs from Deezer
 
@@ -119,28 +101,58 @@ Usage:
   godeez download [command]
 
 Available Commands:
-  album       Download songs from album
-  playlist    Download songs from playlist
+  album       Download songs from an album
+  artist      Download top songs from an artist
+  playlist    Download songs from a playlist
+  track       Download a single track
 
 Flags:
       --bpm                fetch BPM/key and add to file tags
+      --config string      config file (default ~/.godeez/config.toml)
+      --genre              fetch genre and add to file tags
   -h, --help               help for download
-  -q, --quality string     download quality [mp3_128, mp3_320, flac, best] (default "best")
+  -q, --quality string     download quality [mp3_128, mp3_320, flac] (default "mp3_320")
+      --strict             fail the song download if the quality is not available
   -t, --timeout duration   timeout for each download (e.g. 10s, 1m, 2m30s) (default 2m0s)
 
-Global Flags:
-      --config string   config file (default ~/.godeez/config.toml)
-
 Use "godeez download [command] --help" for more information about a command.
 ```
 
+### Examples
+
+```bash
+# Download an album
+godeez download album 12345678
+
+# Download a playlist
+godeez download playlist 87654321
+
+# Download top tracks from an artist
+godeez download artist 11223344 --limit 5
+
+# Download a single track
+godeez download track 98765432
+
+# Download with specific quality, BPM and genre data
+godeez download track 98765432 --quality flac --bpm --genre
+```
+
 ## Contributing
 
 Contributions help make **GoDeez** a better tool for everyone, and any help is greatly appreciated.
 Whether it’s a bug fix, a new feature, or improving documentation, your input is valuable.
 
 If you have an idea for improvement, feel free to fork the repository and submit a pull request. You can also open an issue if you spot a bug or have a feature suggestion.
-Every bit of support counts, so don’t forget to give the project a star if you enjoy using it. Thank you for helping make this project better!
+
+## ⭐ Support the Project
+
+If **GoDeez** helps you enjoy your music collection, please consider giving it a star!
+
+**Why star us?**
+
+- Helps more music lovers discover the project
+- Shows appreciation for the work and motivates development
+- Takes just one click but means the world to us!
 
 ## License
 

cmd/download.go

@@ -4,12 +4,18 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"strings"
 	"time"
 
+	"github.com/mathismqn/godeez/internal/config"
 	"github.com/mathismqn/godeez/internal/downloader"
 	"github.com/spf13/cobra"
 )
 
+type contextKey string
+
+const appConfigKey contextKey = "appConfig"
+
 var opts downloader.Options
 
 var downloadCmd = &cobra.Command{
@@ -20,39 +26,62 @@ var downloadCmd = &cobra.Command{
 func init() {
 	RootCmd.AddCommand(downloadCmd)
 
-	downloadCmd.PersistentFlags().StringVarP(&opts.Quality, "quality", "q", "best", "download quality [mp3_128, mp3_320, flac, best]")
+	downloadCmd.PersistentFlags().StringVarP(&opts.Quality, "quality", "q", "mp3_320", "download quality [mp3_128, mp3_320, flac]")
 	downloadCmd.PersistentFlags().DurationVarP(&opts.Timeout, "timeout", "t", 2*time.Minute, "timeout for each download (e.g. 10s, 1m, 2m30s)")
 	downloadCmd.PersistentFlags().BoolVar(&opts.BPM, "bpm", false, "fetch BPM/key and add to file tags")
+	downloadCmd.PersistentFlags().BoolVar(&opts.Genre, "genre", false, "fetch genre and add to file tags")
+	downloadCmd.PersistentFlags().BoolVar(&opts.Strict, "strict", false, "fail the song download if the quality is not available")
 
 	downloadCmd.AddCommand(
 		newDownloadCmd("album"),
 		newDownloadCmd("playlist"),
+		newDownloadCmd("artist"),
+		newDownloadCmd("track"),
 	)
 }
 
 func newDownloadCmd(resourceType string) *cobra.Command {
 	cmd := &cobra.Command{
 		Use:   fmt.Sprintf("%s <%s_id>", resourceType, resourceType),
-		Short: fmt.Sprintf("Download songs from %s", resourceType),
+		Short: downloadShort(resourceType),
 		Args:  cobra.ExactArgs(1),
 		PreRunE: func(cmd *cobra.Command, args []string) error {
+			appConfig, err := config.New()
+			if err != nil {
+				return err
+			}
+			cmd.SetContext(context.WithValue(cmd.Context(), appConfigKey, appConfig))
+
+			opts.Quality = strings.ToLower(opts.Quality)
 			return opts.Validate()
 		},
 		RunE: func(cmd *cobra.Command, args []string) error {
-			ctx := cmd.Context()
-			dl := downloader.New(appConfig, resourceType)
+			appConfig := cmd.Context().Value(appConfigKey).(*config.Config)
 
-			if err := dl.Run(ctx, opts, args[0]); err != nil {
-				if errors.Is(err, context.Canceled) {
-					return nil
-				}
-
-				return err
+			err := downloader.New(appConfig, resourceType).Run(cmd.Context(), opts, args[0])
+			if errors.Is(err, context.Canceled) {
+				return nil
 			}
-
-			return nil
+			return err
 		},
 	}
 
+	if resourceType == "artist" {
+		cmd.Flags().IntVarP(&opts.Limit, "limit", "l", 10, "number of songs to download")
+	}
+
 	return cmd
 }
+
+func downloadShort(resourceType string) string {
+	switch resourceType {
+	case "artist":
+		return "Download top songs from an artist"
+	case "track":
+		return "Download a single track"
+	case "album":
+		return "Download songs from an album"
+	default:
+		return fmt.Sprintf("Download songs from a %s", resourceType)
+	}
+}

cmd/root.go

@@ -1,27 +1,11 @@
 package cmd
 
 import (
-	"github.com/mathismqn/godeez/internal/config"
 	"github.com/spf13/cobra"
 )
 
-var (
-	cfgPath   string
-	appConfig *config.Config
-)
-
 var RootCmd = &cobra.Command{
 	Use:          "godeez",
 	Short:        "GoDeez is a tool to download music from Deezer",
 	SilenceUsage: true,
-	PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
-		var err error
-		appConfig, err = config.New(cfgPath)
-
-		return err
-	},
-}
-
-func init() {
-	RootCmd.PersistentFlags().StringVar(&cfgPath, "config", "", "config file (default ~/.godeez/config.toml)")
 }

go.mod

@@ -1,49 +1,31 @@
 module github.com/mathismqn/godeez
 
-go 1.23.1
+go 1.25.0
+
+require github.com/spf13/cobra v1.10.2
 
 require (
-	github.com/spf13/cobra v1.8.1
-	github.com/spf13/viper v1.19.0
+	github.com/andybalholm/cascadia v1.3.3 // indirect
+	github.com/fatih/color v1.18.0 // indirect
+	github.com/mattn/go-colorable v0.1.14 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/stretchr/testify v1.11.1 // indirect
+	golang.org/x/net v0.51.0 // indirect
+	golang.org/x/sys v0.41.0 // indirect
+	golang.org/x/term v0.40.0 // indirect
+	golang.org/x/text v0.34.0 // indirect
 )
 
 require (
-	github.com/andybalholm/cascadia v1.3.2 // indirect
-	github.com/fatih/color v1.14.1 // indirect
-	github.com/fsnotify/fsnotify v1.7.0 // indirect
-	github.com/hashicorp/hcl v1.0.0 // indirect
-	github.com/magiconair/properties v1.8.7 // indirect
-	github.com/mattn/go-colorable v0.1.13 // indirect
-	github.com/mattn/go-isatty v0.0.17 // indirect
-	github.com/mitchellh/mapstructure v1.5.0 // indirect
-	github.com/pelletier/go-toml/v2 v2.2.2 // indirect
-	github.com/sagikazarmark/locafero v0.4.0 // indirect
-	github.com/sagikazarmark/slog-shim v0.1.0 // indirect
-	github.com/sourcegraph/conc v0.3.0 // indirect
-	github.com/spf13/afero v1.11.0 // indirect
-	github.com/spf13/cast v1.6.0 // indirect
-	github.com/subosito/gotenv v1.6.0 // indirect
-	go.uber.org/atomic v1.9.0 // indirect
-	go.uber.org/multierr v1.9.0 // indirect
-	golang.org/x/exp v0.0.0-20230905200255-921286631fa9 // indirect
-	golang.org/x/net v0.29.0 // indirect
-	golang.org/x/sys v0.29.0 // indirect
-	golang.org/x/term v0.25.0 // indirect
-	golang.org/x/text v0.19.0 // indirect
-	gopkg.in/ini.v1 v1.67.0 // indirect
-	gopkg.in/yaml.v3 v3.0.1 // indirect
-)
-
-require (
-	github.com/PuerkitoBio/goquery v1.10.0
+	github.com/PuerkitoBio/goquery v1.11.0
 	github.com/bogem/id3v2/v2 v2.1.4
 	github.com/briandowns/spinner v1.23.2
 	github.com/flytam/filenamify v1.2.0
 	github.com/go-flac/flacpicture/v2 v2.0.2
 	github.com/go-flac/flacvorbis/v2 v2.0.2
-	github.com/go-flac/go-flac/v2 v2.0.1
+	github.com/go-flac/go-flac/v2 v2.0.4
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
-	github.com/spf13/pflag v1.0.6 // indirect
-	go.etcd.io/bbolt v1.4.0
-	golang.org/x/crypto v0.28.0
+	github.com/spf13/pflag v1.0.10 // indirect
+	go.etcd.io/bbolt v1.4.3
+	golang.org/x/crypto v0.48.0
 )

go.sum

@@ -1,148 +1,122 @@
-github.com/PuerkitoBio/goquery v1.10.0 h1:6fiXdLuUvYs2OJSvNRqlNPoBm6YABE226xrbavY5Wv4=
-github.com/PuerkitoBio/goquery v1.10.0/go.mod h1:TjZZl68Q3eGHNBA8CWaxAN7rOU1EbDz3CWuolcO5Yu4=
-github.com/andybalholm/cascadia v1.3.2 h1:3Xi6Dw5lHF15JtdcmAHD3i1+T8plmv7BQ/nsViSLyss=
-github.com/andybalholm/cascadia v1.3.2/go.mod h1:7gtRlve5FxPPgIgX36uWBX58OdBsSS6lUvCFb+h7KvU=
+github.com/PuerkitoBio/goquery v1.11.0 h1:jZ7pwMQXIITcUXNH83LLk+txlaEy6NVOfTuP43xxfqw=
+github.com/PuerkitoBio/goquery v1.11.0/go.mod h1:wQHgxUOU3JGuj3oD/QFfxUdlzW6xPHfqyHre6VMY4DQ=
+github.com/andybalholm/cascadia v1.3.3 h1:AG2YHrzJIm4BZ19iwJ/DAua6Btl3IwJX+VI4kktS1LM=
+github.com/andybalholm/cascadia v1.3.3/go.mod h1:xNd9bqTn98Ln4DwST8/nG+H0yuB8Hmgu1YHNnWw0GeA=
 github.com/bogem/id3v2/v2 v2.1.4 h1:CEwe+lS2p6dd9UZRlPc1zbFNIha2mb2qzT1cCEoNWoI=
 github.com/bogem/id3v2/v2 v2.1.4/go.mod h1:l+gR8MZ6rc9ryPTPkX77smS5Me/36gxkMgDayZ9G1vY=
 github.com/briandowns/spinner v1.23.2 h1:Zc6ecUnI+YzLmJniCfDNaMbW0Wid1d5+qcTq4L2FW8w=
 github.com/briandowns/spinner v1.23.2/go.mod h1:LaZeM4wm2Ywy6vO571mvhQNRcWfRUnXOs0RcKV0wYKM=
-github.com/cpuguy83/go-md2man/v2 v2.0.4/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
-github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/cpuguy83/go-md2man/v2 v2.0.6/go.mod h1:oOW0eioCTA6cOiMLiUPZOpcVxMig6NIQQ7OS05n1F4g=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=
-github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/fatih/color v1.14.1 h1:qfhVLaG5s+nCROl1zJsZRxFeYrHLqWroPOQ8BWiNb4w=
-github.com/fatih/color v1.14.1/go.mod h1:2oHN61fhTpgcxD3TSWCgKDiH1+x4OiDVVGH8WlgGZGg=
+github.com/fatih/color v1.18.0 h1:S8gINlzdQ840/4pfAwic/ZE0djQEH3wM94VfqLTZcOM=
+github.com/fatih/color v1.18.0/go.mod h1:4FelSpRwEGDpQ12mAdzqdOukCy4u8WUtOY6lkT/6HfU=
 github.com/flytam/filenamify v1.2.0 h1:7RiSqXYR4cJftDQ5NuvljKMfd/ubKnW/j9C6iekChgI=
 github.com/flytam/filenamify v1.2.0/go.mod h1:Dzf9kVycwcsBlr2ATg6uxjqiFgKGH+5SKFuhdeP5zu8=
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 golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.7.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.29.0 h1:TPYlXGxvx1MGTn2GiZDhnjPA9wZzZeGKHHmKhHYvgaU=
-golang.org/x/sys v0.29.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.17.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.20.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.28.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.41.0 h1:Ivj+2Cp/ylzLiEU89QhWblYnOE9zerudt9Ftecq2C6k=
+golang.org/x/sys v0.41.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
+golang.org/x/telemetry v0.0.0-20240228155512-f48c80bd79b2/go.mod h1:TeRTkGYfJXctD9OcfyVLyj2J3IxLnKwHJR8f4D8a3YE=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
-golang.org/x/term v0.7.0/go.mod h1:P32HKFT3hSsZrRxla30E9HqToFYAQPCMs/zFMBUFqPY=
-golang.org/x/term v0.25.0 h1:WtHI/ltw4NvSUig5KARz9h521QvRC8RmF/cuYqifU24=
-golang.org/x/term v0.25.0/go.mod h1:RPyXicDX+6vLxogjjRxjgD2TKtmAO6NZBsBRfrOLu7M=
+golang.org/x/term v0.8.0/go.mod h1:xPskH00ivmX89bAKVGSKKtLOWNx2+17Eiy94tnKShWo=
+golang.org/x/term v0.12.0/go.mod h1:owVbMEjm3cBLCHdkQu9b1opXd4ETQWc3BhuQGKgXgvU=
+golang.org/x/term v0.17.0/go.mod h1:lLRBjIVuehSbZlaOtGMbcMncT+aqLLLmKrsjNrUguwk=
+golang.org/x/term v0.20.0/go.mod h1:8UkIAJTvZgivsXaD6/pH6U9ecQzZ45awqEOzuCvwpFY=
+golang.org/x/term v0.27.0/go.mod h1:iMsnZpn0cago0GOrHO2+Y7u7JPn5AylBrcoWkElMTSM=
+golang.org/x/term v0.40.0 h1:36e4zGLqU4yhjlmxEaagx2KuYbJq3EwY8K943ZsHcvg=
+golang.org/x/term v0.40.0/go.mod h1:w2P8uVp06p2iyKKuvXIm7N/y0UCRt3UfJTfZ7oOpglM=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
 golang.org/x/text v0.3.8/go.mod h1:E6s5w1FMmriuDzIBO73fBruAKo1PCIq6d2Q6DHfQ8WQ=
 golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
 golang.org/x/text v0.9.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
-golang.org/x/text v0.19.0 h1:kTxAhCbGbxhK0IwgSKiMO5awPoDQ0RpfiVYBfK860YM=
-golang.org/x/text v0.19.0/go.mod h1:BuEKDfySbSR4drPmRPG/7iBdf8hvFMuRexcpahXilzY=
+golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
+golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
+golang.org/x/text v0.15.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
+golang.org/x/text v0.21.0/go.mod h1:4IBbMaMmOPCJ8SecivzSH54+73PCFmPWxNTLm+vZkEQ=
+golang.org/x/text v0.34.0 h1:oL/Qq0Kdaqxa1KbNeMKwQq0reLCCaFtqu2eNuSeNHbk=
+golang.org/x/text v0.34.0/go.mod h1:homfLqTYRFyVYemLBFl5GgL/DWEiH5wcsQ5gSh1yziA=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
 golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
+golang.org/x/tools v0.13.0/go.mod h1:HvlwmtVNQAhOuCjW7xxvovg8wbNq7LwfXh/k7wXUl58=
+golang.org/x/tools v0.21.1-0.20240508182429-e35e4ccd0d2d/go.mod h1:aiJjzUbINMkxbQROHiO6hDPo2LHcIPhhQsa9DLh0yGk=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
-gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/ini.v1 v1.67.0 h1:Dgnx+6+nfE+IfzjUEISNeydPJh9AXNNsWbGP9KzCsOA=
-gopkg.in/ini.v1 v1.67.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
-gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

internal/bpm/bpm.go

@@ -1,176 +0,0 @@
-package bpm
-
-import (
-	"bytes"
-	"context"
-	"fmt"
-	"io"
-	"net/http"
-	"net/url"
-	"regexp"
-	"strconv"
-	"strings"
-
-	"github.com/PuerkitoBio/goquery"
-)
-
-type Metrics struct {
-	BPM string
-	Key string
-}
-
-func FetchMetrics(ctx context.Context, httpClient *http.Client, artist, title, duration string) (*Metrics, error) {
-	url, err := findSongURL(ctx, httpClient, artist, title, duration)
-	if err != nil {
-		return nil, err
-	}
-
-	html, err := fetchPage(ctx, httpClient, url)
-	if err != nil {
-		return nil, err
-	}
-
-	return parseMetrics(html)
-}
-
-func findSongURL(ctx context.Context, httpClient *http.Client, artist, title, duration string) (string, error) {
-	rootUrl := "https://songbpm.com"
-	reqUrl := rootUrl + "/searches"
-
-	values := url.Values{}
-	values.Add("query", fmt.Sprintf("%s %s", artist, title))
-
-	req, err := http.NewRequestWithContext(ctx, "POST", reqUrl, bytes.NewBufferString(values.Encode()))
-	if err != nil {
-		return "", err
-	}
-	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
-	req.Header.Set("Origin", "https://songbpm.com")
-
-	resp, err := httpClient.Do(req)
-	if err != nil {
-		return "", err
-	}
-	defer resp.Body.Close()
-
-	if resp.StatusCode != http.StatusOK {
-		return "", fmt.Errorf("unexpected status code: %d", resp.StatusCode)
-	}
-
-	doc, err := goquery.NewDocumentFromReader(resp.Body)
-	if err != nil {
-		return "", err
-	}
-
-	var (
-		found bool
-		url   string
-	)
-
-	doc.Find("a.flex.flex-col").EachWithBreak(func(_ int, selection *goquery.Selection) bool {
-		lowerSelection := strings.ToLower(selection.Text())
-		lowerTitle := strings.ToLower(title)
-		lowerArtist := strings.ToLower(artist)
-		if !strings.Contains(lowerSelection, lowerTitle) || !strings.Contains(lowerSelection, lowerArtist) {
-			return true
-		}
-
-		durationStr := strings.TrimSpace(selection.Find("div.flex-1.flex-col.items-center").Eq(1).Find("span.text-2xl").Text())
-		parts := strings.Split(durationStr, ":")
-		if len(parts) != 2 {
-			return true
-		}
-		minutes, err := strconv.Atoi(parts[0])
-		if err != nil {
-			return true
-		}
-		seconds, err := strconv.Atoi(parts[1])
-		if err != nil {
-			return true
-		}
-
-		foundDuration := minutes*60 + seconds
-		duration, err := strconv.Atoi(duration)
-		if err != nil {
-			return true
-		}
-
-		if foundDuration <= (duration-2) || foundDuration >= (duration+2) {
-			return true
-		}
-
-		url = selection.AttrOr("href", "")
-		found = true
-
-		return false
-	})
-
-	if !found {
-		return "", fmt.Errorf("no data found")
-	}
-
-	return rootUrl + url, nil
-}
-
-func fetchPage(ctx context.Context, httpClient *http.Client, url string) (string, error) {
-	req, err := http.NewRequestWithContext(ctx, "GET", url, nil)
-	if err != nil {
-		return "", err
-	}
-
-	resp, err := httpClient.Do(req)
-	if err != nil {
-		return "", err
-	}
-	defer resp.Body.Close()
-
-	if resp.StatusCode != http.StatusOK {
-		return "", fmt.Errorf("unexpected status code: %d", resp.StatusCode)
-	}
-
-	body, err := io.ReadAll(resp.Body)
-	if err != nil {
-		return "", err
-	}
-
-	return string(body), nil
-}
-
-func parseMetrics(html string) (*Metrics, error) {
-	bpmRegex := regexp.MustCompile(`tempo of <span[^>]*>(\d+) BPM`)
-	bpmMatch := bpmRegex.FindStringSubmatch(html)
-
-	keyRegex := regexp.MustCompile(`with a <span[^>]*>([A-G](?:♯|#|♭|b)?(?:/[A-G](?:♯|#|♭|b)?)?)</span> key`)
-	keyMatch := keyRegex.FindStringSubmatch(html)
-
-	modeRegex := regexp.MustCompile(`a  <span[^>]*>([a-z]+)</span> mode`)
-	modeMatch := modeRegex.FindStringSubmatch(html)
-
-	if len(bpmMatch) != 2 || len(keyMatch) != 2 || len(modeMatch) != 2 {
-		return nil, fmt.Errorf("no data found")
-	}
-
-	isMinor := false
-	bpm := bpmMatch[1]
-	key := keyMatch[1]
-	if modeMatch[1] == "minor" {
-		isMinor = true
-	}
-
-	if strings.Contains(key, "/") {
-		parts := strings.Split(key, "/")
-		key = parts[0]
-	}
-
-	key = strings.ReplaceAll(key, "♯", "#")
-	key = strings.ReplaceAll(key, "♭", "b")
-
-	if isMinor && !strings.HasSuffix(key, "m") {
-		key += "m"
-	}
-
-	return &Metrics{
-		BPM: bpm,
-		Key: key,
-	}, nil
-}

internal/config/config.go

@@ -3,80 +3,55 @@ package config
 import (
 	"fmt"
 	"os"
-	"path"
 	"path/filepath"
 
 	"github.com/mathismqn/godeez/internal/fileutil"
 	"github.com/mathismqn/godeez/internal/store"
-	"github.com/spf13/viper"
 )
 
 type Config struct {
-	ArlCookie string `mapstructure:"arl_cookie"`
-	SecretKey string `mapstructure:"secret_key"`
-	OutputDir string `mapstructure:"output_dir"`
+	ArlCookie string
+	OutputDir string
+	HomeDir   string
 }
 
-func New(cfgPath string) (*Config, error) {
+func New() (*Config, error) {
+	arl := os.Getenv("DEEZER_ARL")
+	if arl == "" {
+		return nil, fmt.Errorf("DEEZER_ARL is not set. Export it in your shell: export DEEZER_ARL='your_cookie'")
+	}
+
 	homeDir, err := os.UserHomeDir()
 	if err != nil {
 		return nil, fmt.Errorf("failed to get home directory: %w", err)
 	}
 
-	cfgDir := filepath.Join(homeDir, ".godeez")
-	if err := fileutil.EnsureDir(cfgDir); err != nil {
-		return nil, fmt.Errorf("failed to create config directory: %w", err)
+	outputDir := filepath.Join(homeDir, "Music", "GoDeez")
+	if err := fileutil.EnsureDir(outputDir); err != nil {
+		return nil, fmt.Errorf("failed to create output directory: %w", err)
 	}
 
-	if cfgPath == "" {
-		cfgPath = path.Join(cfgDir, "config.toml")
-		if _, err := os.Stat(cfgPath); os.IsNotExist(err) {
-			fmt.Printf("Config file not found, creating one at %s\n", cfgPath)
-
-			content := []byte("arl_cookie = ''\nsecret_key = ''\noutput_dir = ''\n")
-			if err := os.WriteFile(cfgPath, content, 0644); err != nil {
-				return nil, fmt.Errorf("failed to create config file: %w", err)
-			}
-
-			os.Exit(0)
+	// Migrate tracks.db from ~/.godeez/ to output dir
+	oldDB := filepath.Join(homeDir, ".godeez", "tracks.db")
+	newDB := filepath.Join(outputDir, ".tracks.db")
+	if _, err := os.Stat(oldDB); err == nil {
+		if _, err := os.Stat(newDB); os.IsNotExist(err) {
+			os.Rename(oldDB, newDB)
 		}
 	}
 
-	viper.SetConfigFile(cfgPath)
-	viper.SetConfigType("toml")
-	viper.AutomaticEnv()
-	if err := viper.ReadInConfig(); err != nil {
-		return nil, fmt.Errorf("failed to read config file: %w", err)
-	}
+	// Clean up old config directory
+	oldDir := filepath.Join(homeDir, ".godeez")
+	os.Remove(filepath.Join(oldDir, "config.toml"))
+	os.Remove(oldDir) // fails silently if not empty
 
-	var cfg Config
-	if err := viper.Unmarshal(&cfg); err != nil {
-		return nil, fmt.Errorf("failed to parse config: %w", err)
-	}
-	if err := cfg.Validate(homeDir); err != nil {
-		return nil, fmt.Errorf("invalid config: %w", err)
-	}
-
-	if err := store.OpenDB(cfgDir); err != nil {
+	if err := store.OpenDB(outputDir); err != nil {
 		return nil, err
 	}
 
-	return &cfg, nil
-}
-
-func (c *Config) Validate(homeDir string) error {
-	if c.ArlCookie == "" {
-		return fmt.Errorf("arl_cookie is not set")
-	}
-	if c.SecretKey == "" {
-		return fmt.Errorf("secret_key is not set")
-	}
-	if len(c.SecretKey) != 16 {
-		return fmt.Errorf("secret_key must be 16 bytes long")
-	}
-	if c.OutputDir == "" {
-		c.OutputDir = filepath.Join(homeDir, "Music", "GoDeez")
-	}
-
-	return nil
+	return &Config{
+		ArlCookie: arl,
+		OutputDir: outputDir,
+		HomeDir:   homeDir,
+	}, nil
 }

internal/crypto/blowfish.go

@@ -3,18 +3,22 @@ package crypto
 import (
 	"crypto/cipher"
 	"crypto/md5"
-	"fmt"
+	"encoding/hex"
 
 	"golang.org/x/crypto/blowfish"
 )
 
-var iv = []byte{0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07}
+var (
+	iv        = []byte{0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07}
+	secretKey = []byte("g4el58wc0zvf9na1")
+)
 
-func GetKey(secretKey, songID string) []byte {
+func GetKey(songID string) []byte {
 	hash := md5.Sum([]byte(songID))
-	hashHex := fmt.Sprintf("%x", hash)
+	hashHex := hex.EncodeToString(hash[:])
 
-	key := []byte(secretKey)
+	key := make([]byte, len(secretKey))
+	copy(key, secretKey)
 	for i := 0; i < len(hash); i++ {
 		key[i] = key[i] ^ hashHex[i] ^ hashHex[i+16]
 	}
@@ -28,9 +32,8 @@ func Decrypt(data, key []byte) ([]byte, error) {
 		return nil, err
 	}
 
-	mode := cipher.NewCBCDecrypter(block, iv)
 	decrypted := make([]byte, len(data))
-	mode.CryptBlocks(decrypted, data)
+	cipher.NewCBCDecrypter(block, iv).CryptBlocks(decrypted, data)
 
 	return decrypted, nil
 }

internal/deezer/album.go

@@ -19,6 +19,7 @@ type Album struct {
 			PhysicalReleaseDate string `json:"PHYSICAL_RELEASE_DATE"`
 			Label               string `json:"LABEL_NAME"`
 			ProducerLine        string `json:"PRODUCER_LINE"`
+			Copyright           string `json:"COPYRIGHT"`
 			Duration            string `json:"DURATION"`
 		} `json:"DATA"`
 		Songs struct {
@@ -59,12 +60,14 @@ func (a *Album) GetSongs() []*Song {
 	return a.Results.Songs.Data
 }
 
+func (a *Album) SetSongs(s []*Song) {
+	a.Results.Songs.Data = s
+}
+
 func (a *Album) GetOutputDir(outputDir string) string {
 	base := fmt.Sprintf("%s - %s", a.Results.Data.Artist, a.Results.Data.Title)
 	base, _ = filenamify.Filenamify(base, filenamify.Options{})
-	outputDir = path.Join(outputDir, base)
-
-	return outputDir
+	return path.Join(outputDir, base)
 }
 
 func (a *Album) Unmarshal(data []byte) error {

internal/deezer/artist.go

@@ -0,0 +1,77 @@
+package deezer
+
+import (
+	"encoding/json"
+	"fmt"
+	"path"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/flytam/filenamify"
+)
+
+type Artist struct {
+	Results struct {
+		Data struct {
+			Name string `json:"ART_NAME"`
+		} `json:"DATA"`
+		Songs struct {
+			Data []*Song `json:"data"`
+		} `json:"TOP"`
+	} `json:"results"`
+}
+
+func (a *Artist) String() string {
+	songs := a.Results.Songs.Data
+	count := len(songs)
+
+	totalSec := 0
+	for _, s := range songs {
+		if d, err := strconv.Atoi(s.Duration); err == nil {
+			totalSec += d
+		}
+	}
+
+	limit := min(3, count)
+
+	var b strings.Builder
+	fmt.Fprintf(&b, "============= [ Artist Info ] =============\n")
+	fmt.Fprintf(&b, "Artist:   %s\n", a.Results.Data.Name)
+	fmt.Fprintf(&b, "Tracks:   %d\n", count)
+	fmt.Fprintf(&b, "Playtime: %s\n", time.Duration(totalSec)*time.Second)
+	fmt.Fprintf(&b, "-------------------------------------------\n")
+	fmt.Fprintf(&b, "Top %d most popular tracks:\n", limit)
+	for i := 0; i < limit; i++ {
+		s := songs[i]
+		fmt.Fprintf(&b, "    %2d. %s – %s\n", i+1, s.Artist, s.GetTitle())
+	}
+	fmt.Fprintf(&b, "===========================================\n")
+
+	return b.String()
+}
+
+func (a *Artist) GetType() string {
+	return "Artist"
+}
+
+func (a *Artist) GetTitle() string {
+	return a.Results.Data.Name
+}
+
+func (a *Artist) GetSongs() []*Song {
+	return a.Results.Songs.Data
+}
+
+func (a *Artist) SetSongs(s []*Song) {
+	a.Results.Songs.Data = s
+}
+
+func (a *Artist) GetOutputDir(outputDir string) string {
+	base, _ := filenamify.Filenamify(a.Results.Data.Name, filenamify.Options{})
+	return path.Join(outputDir, base)
+}
+
+func (a *Artist) Unmarshal(data []byte) error {
+	return json.Unmarshal(data, a)
+}

internal/deezer/client.go

@@ -29,23 +29,37 @@ func NewClient(ctx context.Context, appConfig *config.Config) (*Client, error) {
 	}, nil
 }
 
-func (c *Client) FetchResource(ctx context.Context, ressource Resource, id string) error {
+func (c *Client) FetchResource(ctx context.Context, resource Resource, id string) error {
 	payload := map[string]interface{}{
-		"nb":          10000,
-		"start":       0,
-		"playlist_id": id,
-		"alb_id":      id,
-		"lang":        "en",
-		"tab":         0,
-		"tags":        true,
-		"header":      true,
+		"nb":     10000,
+		"start":  0,
+		"lang":   "en",
+		"tab":    0,
+		"tags":   true,
+		"header": true,
 	}
+
+	var idKey string
+	switch resource.(type) {
+	case *Playlist:
+		idKey = "playlist_id"
+	case *Album:
+		idKey = "alb_id"
+	case *Artist:
+		idKey = "art_id"
+	case *Track:
+		idKey = "sng_id"
+	default:
+		return fmt.Errorf("unsupported resource type: %T", resource)
+	}
+	payload[idKey] = id
+
 	jsonData, err := json.Marshal(payload)
 	if err != nil {
 		return err
 	}
 
-	url := fmt.Sprintf("https://www.deezer.com/ajax/gw-light.php?method=deezer.page%s&input=3&api_version=1.0&api_token=%s", ressource.GetType(), c.Session.APIToken)
+	url := fmt.Sprintf("https://www.deezer.com/ajax/gw-light.php?method=deezer.page%s&input=3&api_version=1.0&api_token=%s", resource.GetType(), c.Session.APIToken)
 	req, err := http.NewRequestWithContext(ctx, "POST", url, bytes.NewBuffer(jsonData))
 	if err != nil {
 		return err
@@ -66,34 +80,36 @@ func (c *Client) FetchResource(ctx context.Context, ressource Resource, id strin
 		return err
 	}
 
-	if strings.Contains(string(body), `"DATA_ERROR":"playlist::getData"`) {
-		return fmt.Errorf("invalid playlist ID")
+	bodyStr := string(body)
+	for _, check := range []struct {
+		marker string
+		errMsg string
+	}{
+		{`"DATA_ERROR":"playlist::getData"`, "invalid playlist ID"},
+		{`"DATA_ERROR":"album::getData"`, "invalid album ID"},
+		{`"DATA_ERROR":"artist::getData"`, "invalid artist ID"},
+		{`"DATA_ERROR":"song::getData"`, "invalid track ID"},
+	} {
+		if strings.Contains(bodyStr, check.marker) {
+			return fmt.Errorf("%s", check.errMsg)
+		}
 	}
-	if strings.Contains(string(body), `"DATA_ERROR":"album::getData"`) {
-		return fmt.Errorf("invalid album ID")
-	}
-	if strings.Contains(string(body), `"results":{}`) {
+
+	if strings.Contains(bodyStr, `"results":{}`) {
 		return fmt.Errorf("unexpected response")
 	}
 
-	return ressource.Unmarshal(body)
+	return resource.Unmarshal(body)
 }
 
 func (c *Client) FetchMedia(ctx context.Context, song *Song, quality string) (*Media, error) {
-	var formats string
-
-	switch quality {
-	case "mp3_128":
-		formats = `[{"cipher":"BF_CBC_STRIPE","format":"MP3_128"}]`
-	case "mp3_320":
-		formats = `[{"cipher":"BF_CBC_STRIPE","format":"MP3_320"}]`
-	case "flac":
-		formats = `[{"cipher":"BF_CBC_STRIPE","format":"FLAC"}]`
-	case "best":
-		formats = `[{"cipher":"BF_CBC_STRIPE","format":"FLAC"},{"cipher":"BF_CBC_STRIPE","format":"MP3_320"},{"cipher":"BF_CBC_STRIPE","format":"MP3_128"}]`
+	qualityFormats := map[string]string{
+		"mp3_128": `[{"cipher":"BF_CBC_STRIPE","format":"MP3_128"}]`,
+		"mp3_320": `[{"cipher":"BF_CBC_STRIPE","format":"MP3_320"},{"cipher":"BF_CBC_STRIPE","format":"MP3_128"}]`,
+		"flac":    `[{"cipher":"BF_CBC_STRIPE","format":"FLAC"},{"cipher":"BF_CBC_STRIPE","format":"MP3_320"},{"cipher":"BF_CBC_STRIPE","format":"MP3_128"}]`,
 	}
 
-	reqBody := fmt.Sprintf(`{"license_token":"%s","media":[{"type":"FULL","formats":%s}],"track_tokens":["%s"]}`, c.Session.LicenseToken, formats, song.TrackToken)
+	reqBody := fmt.Sprintf(`{"license_token":"%s","media":[{"type":"FULL","formats":%s}],"track_tokens":["%s"]}`, c.Session.LicenseToken, qualityFormats[quality], song.TrackToken)
 	req, err := http.NewRequestWithContext(ctx, "POST", "https://media.deezer.com/v1/get_url", bytes.NewBuffer([]byte(reqBody)))
 	if err != nil {
 		return nil, err
@@ -115,8 +131,7 @@ func (c *Client) FetchMedia(ctx context.Context, song *Song, quality string) (*M
 	}
 
 	var media Media
-	err = json.Unmarshal(body, &media)
-	if err != nil {
+	if err := json.Unmarshal(body, &media); err != nil {
 		return nil, err
 	}
 
@@ -124,17 +139,20 @@ func (c *Client) FetchMedia(ctx context.Context, song *Song, quality string) (*M
 		if media.Errors[0].Code == 1000 {
 			return nil, fmt.Errorf("invalid license token")
 		}
-
 		return nil, fmt.Errorf("%s", media.Errors[0].Message)
 	}
+
 	if len(media.Data) > 0 && len(media.Data[0].Errors) > 0 {
 		if media.Data[0].Errors[0].Code == 2002 {
 			return nil, fmt.Errorf("invalid track token")
 		}
-
 		return nil, fmt.Errorf("%s", media.Data[0].Errors[0].Message)
 	}
 
+	if len(media.Data) == 0 || len(media.Data[0].Media) == 0 || len(media.Data[0].Media[0].Sources) == 0 {
+		return nil, fmt.Errorf("no sources found")
+	}
+
 	return &media, nil
 }
 
@@ -158,13 +176,8 @@ func (c *Client) FetchCoverImage(ctx context.Context, song *Song) ([]byte, error
 	return io.ReadAll(resp.Body)
 }
 
-func (c *Client) GetMediaStream(ctx context.Context, media *Media, songID string) (io.ReadCloser, error) {
-	url, err := media.GetURL()
-	if err != nil {
-		return nil, err
-	}
-
-	req, err := http.NewRequestWithContext(ctx, "GET", url, nil)
+func (c *Client) GetMediaStream(ctx context.Context, media *Media) (io.ReadCloser, error) {
+	req, err := http.NewRequestWithContext(ctx, "GET", media.GetURL(), nil)
 	if err != nil {
 		return nil, err
 	}

internal/deezer/media.go

@@ -1,56 +1,27 @@
 package deezer
 
-import (
-	"fmt"
-)
-
 type Media struct {
-	Errors []MediaError `json:"errors"`
+	Errors []mediaError `json:"errors"`
 	Data   []struct {
 		Media []struct {
-			Type    string   `json:"media_type"`
-			Cipher  Cipher   `json:"cipher"`
-			Format  string   `json:"format"`
-			Sources []Source `json:"sources"`
+			Format  string `json:"format"`
+			Sources []struct {
+				URL string `json:"url"`
+			} `json:"sources"`
 		}
-		Errors []MediaError `json:"errors"`
+		Errors []mediaError `json:"errors"`
 	} `json:"data"`
 }
 
-type MediaError struct {
+type mediaError struct {
 	Code    int    `json:"code"`
 	Message string `json:"message"`
 }
 
-type Cipher struct {
-	Type string `json:"type"`
+func (m *Media) GetURL() string {
+	return m.Data[0].Media[0].Sources[0].URL
 }
 
-type Source struct {
-	URL      string `json:"url"`
-	Provider string `json:"provider"`
-}
-
-func (m *Media) GetURL() (string, error) {
-	if len(m.Data) == 0 || len(m.Data[0].Media) == 0 || len(m.Data[0].Media[0].Sources) == 0 {
-		return "", fmt.Errorf("no media sources found")
-	}
-
-	url := m.Data[0].Media[0].Sources[0].URL
-	for _, source := range m.Data[0].Media[0].Sources {
-		if source.Provider == "ak" {
-			url = source.URL
-			break
-		}
-	}
-
-	return url, nil
-}
-
-func (m *Media) GetFormat() (string, error) {
-	if len(m.Data) == 0 || len(m.Data[0].Media) == 0 {
-		return "", fmt.Errorf("no media format found")
-	}
-
-	return m.Data[0].Media[0].Format, nil
+func (m *Media) GetFormat() string {
+	return m.Data[0].Media[0].Format
 }

internal/deezer/playlist.go

@@ -13,7 +13,6 @@ type Playlist struct {
 	Results struct {
 		Data struct {
 			Title    string `json:"TITLE"`
-			Status   int    `json:"STATUS"`
 			Creator  string `json:"PARENT_USERNAME"`
 			Duration int    `json:"DURATION"`
 		} `json:"DATA"`
@@ -50,11 +49,13 @@ func (p *Playlist) GetSongs() []*Song {
 	return p.Results.Songs.Data
 }
 
-func (p *Playlist) GetOutputDir(outputDir string) string {
-	p.Results.Data.Title, _ = filenamify.Filenamify(p.Results.Data.Title, filenamify.Options{})
-	outputDir = path.Join(outputDir, p.Results.Data.Title)
+func (p *Playlist) SetSongs(s []*Song) {
+	p.Results.Songs.Data = s
+}
 
-	return outputDir
+func (p *Playlist) GetOutputDir(outputDir string) string {
+	base, _ := filenamify.Filenamify(p.Results.Data.Title, filenamify.Options{})
+	return path.Join(outputDir, base)
 }
 
 func (p *Playlist) Unmarshal(data []byte) error {

internal/deezer/resource.go

@@ -4,6 +4,7 @@ type Resource interface {
 	GetTitle() string
 	GetType() string
 	GetSongs() []*Song
+	SetSongs(songs []*Song)
 	GetOutputDir(outputDir string) string
 	Unmarshal(data []byte) error
 }

internal/deezer/session.go

@@ -10,25 +10,11 @@ import (
 	"time"
 )
 
-type UserDataResponse struct {
-	Results struct {
-		APIToken string `json:"checkForm"`
-		User     struct {
-			Id      int `json:"USER_ID"`
-			Options struct {
-				LicenseToken  string `json:"license_token"`
-				MobileOffline bool   `json:"mobile_offline"`
-				WebOffline    bool   `json:"web_offline"`
-			} `json:"OPTIONS"`
-		} `json:"USER"`
-	} `json:"results"`
-}
-
 type Session struct {
-	ArlCookie    string
 	APIToken     string
 	LicenseToken string
 	HttpClient   *http.Client
+	Premium      bool
 }
 
 func Authenticate(ctx context.Context, arlCookie string) (*Session, error) {
@@ -67,22 +53,32 @@ func Authenticate(ctx context.Context, arlCookie string) (*Session, error) {
 		return nil, err
 	}
 
-	var res UserDataResponse
+	var res struct {
+		Results struct {
+			APIToken string `json:"checkForm"`
+			User     struct {
+				ID      int `json:"USER_ID"`
+				Options struct {
+					LicenseToken  string `json:"license_token"`
+					MobileOffline bool   `json:"mobile_offline"`
+					WebOffline    bool   `json:"web_offline"`
+				} `json:"OPTIONS"`
+			} `json:"USER"`
+		} `json:"results"`
+	}
 	if err := json.Unmarshal(body, &res); err != nil {
 		return nil, err
 	}
 
-	if res.Results.User.Id == 0 {
+	if res.Results.User.ID == 0 {
 		return nil, fmt.Errorf("invalid arl cookie")
 	}
-	if !res.Results.User.Options.MobileOffline && !res.Results.User.Options.WebOffline {
-		return nil, fmt.Errorf("premium account required")
-	}
 
+	opts := res.Results.User.Options
 	return &Session{
-		ArlCookie:    arlCookie,
 		APIToken:     res.Results.APIToken,
-		LicenseToken: res.Results.User.Options.LicenseToken,
+		LicenseToken: opts.LicenseToken,
 		HttpClient:   client,
+		Premium:      opts.MobileOffline || opts.WebOffline,
 	}, nil
 }

internal/deezer/song.go

@@ -1,50 +1,68 @@
 package deezer
 
 import (
+	"encoding/json"
 	"fmt"
+	"strconv"
 
 	"github.com/flytam/filenamify"
 )
 
+type Contributors struct {
+	MainArtists []string `json:"main_artist"`
+	Composers   []string `json:"composer"`
+	Authors     []string `json:"author"`
+}
+
+func (c *Contributors) UnmarshalJSON(data []byte) error {
+	if string(data) == "[]" {
+		*c = Contributors{}
+		return nil
+	}
+
+	type Alias Contributors
+	aux := (*Alias)(c)
+
+	return json.Unmarshal(data, aux)
+}
+
 type Song struct {
-	ID           string `json:"SNG_ID"`
-	Artist       string `json:"ART_NAME"`
-	Title        string `json:"SNG_TITLE"`
-	Version      string `json:"VERSION"`
-	Cover        string `json:"ALB_PICTURE"`
-	Contributors struct {
-		MainArtists []string `json:"main_artist"`
-		Composers   []string `json:"composer"`
-		Authors     []string `json:"author"`
-	} `json:"SNG_CONTRIBUTORS"`
-	Duration    string `json:"DURATION"`
-	Gain        string `json:"GAIN"`
-	ISRC        string `json:"ISRC"`
-	TrackNumber string `json:"TRACK_NUMBER"`
-	TrackToken  string `json:"TRACK_TOKEN"`
+	ID           string       `json:"SNG_ID"`
+	Artist       string       `json:"ART_NAME"`
+	Title        string       `json:"SNG_TITLE"`
+	Version      string       `json:"VERSION"`
+	Cover        string       `json:"ALB_PICTURE"`
+	Contributors Contributors `json:"SNG_CONTRIBUTORS"`
+	Duration     string       `json:"DURATION"`
+	Gain         string       `json:"GAIN"`
+	ISRC         string       `json:"ISRC"`
+	TrackNumber  string       `json:"TRACK_NUMBER"`
+	TrackToken   string       `json:"TRACK_TOKEN"`
 }
 
 func (s *Song) GetTitle() string {
-	songTitle := s.Title
 	if s.Version != "" {
-		songTitle = fmt.Sprintf("%s %s", s.Title, s.Version)
+		return s.Title + " " + s.Version
 	}
-
-	return songTitle
+	return s.Title
 }
 
-func (s *Song) GetFileName(resourceType string, song *Song, media *Media) string {
+func (s *Song) GetFileName(resourceType, mediaFormat string) string {
 	ext := "mp3"
-	if media.Data[0].Media[0].Format == "FLAC" {
+	if mediaFormat == "FLAC" {
 		ext = "flac"
 	}
-	trackNumber := ""
+
+	prefix := ""
 	if resourceType == "album" {
-		trackNumber = song.TrackNumber + ". "
+		if n, err := strconv.Atoi(s.TrackNumber); err == nil {
+			prefix = fmt.Sprintf("%02d. ", n)
+		} else {
+			prefix = s.TrackNumber + ". "
+		}
 	}
 
-	fileName := fmt.Sprintf("%s%s - %s.%s", trackNumber, s.Artist, s.GetTitle(), ext)
-	fileName, _ = filenamify.Filenamify(fileName, filenamify.Options{})
-
+	fileName := fmt.Sprintf("%s%s - %s.%s", prefix, s.Artist, s.GetTitle(), ext)
+	fileName, _ = filenamify.Filenamify(fileName, filenamify.Options{MaxLength: 255})
 	return fileName
 }

internal/deezer/track.go

@@ -0,0 +1,65 @@
+package deezer
+
+import (
+	"encoding/json"
+	"fmt"
+	"path"
+	"strconv"
+	"time"
+)
+
+type Track struct {
+	Results struct {
+		Data *Song `json:"DATA"`
+	} `json:"results"`
+}
+
+func (t *Track) String() string {
+	if t.Results.Data == nil {
+		return "Track: No data available"
+	}
+
+	duration, err := strconv.Atoi(t.Results.Data.Duration)
+	if err != nil {
+		duration = 0
+	}
+
+	return fmt.Sprintf(
+		`================= [ Track Info ] =================
+Title:    %s
+Artist:   %s
+Duration: %s
+==================================================`,
+		t.Results.Data.GetTitle(),
+		t.Results.Data.Artist,
+		time.Duration(duration)*time.Second,
+	)
+}
+
+func (t *Track) GetType() string {
+	return "Track"
+}
+
+func (t *Track) GetTitle() string {
+	if t.Results.Data == nil {
+		return ""
+	}
+	return t.Results.Data.GetTitle()
+}
+
+func (t *Track) GetSongs() []*Song {
+	if t.Results.Data == nil {
+		return nil
+	}
+	return []*Song{t.Results.Data}
+}
+
+func (t *Track) SetSongs(songs []*Song) {}
+
+func (t *Track) GetOutputDir(outputDir string) string {
+	return path.Join(outputDir, "Singles")
+}
+
+func (t *Track) Unmarshal(data []byte) error {
+	return json.Unmarshal(data, t)
+}

internal/downloader/client.go

@@ -7,15 +7,15 @@ import (
 	"io"
 	"os"
 	"path"
+	"strings"
 	"sync"
 	"time"
 
-	"github.com/briandowns/spinner"
-	"github.com/mathismqn/godeez/internal/bpm"
 	"github.com/mathismqn/godeez/internal/config"
 	"github.com/mathismqn/godeez/internal/crypto"
 	"github.com/mathismqn/godeez/internal/deezer"
 	"github.com/mathismqn/godeez/internal/fileutil"
+	"github.com/mathismqn/godeez/internal/logger"
 	"github.com/mathismqn/godeez/internal/store"
 	"github.com/mathismqn/godeez/internal/tags"
 )
@@ -26,6 +26,7 @@ type Client struct {
 	appConfig    *config.Config
 	resourceType string
 	deezerClient *deezer.Client
+	Logger       *logger.Logger
 
 	hashIndexOnce sync.Once
 	hashIndex     *fileutil.HashIndex
@@ -36,172 +37,154 @@ func New(appConfig *config.Config, resourceType string) *Client {
 	return &Client{
 		appConfig:    appConfig,
 		resourceType: resourceType,
-		deezerClient: nil,
+		Logger:       logger.New(nil),
 	}
 }
 
 func (c *Client) Run(ctx context.Context, opts Options, id string) error {
+	if err := c.initDeezerClient(ctx, opts); err != nil {
+		return err
+	}
+
+	resource, outputDir, err := c.prepareResource(ctx, id, opts)
+	if err != nil {
+		return err
+	}
+
+	return c.downloadAllSongs(ctx, resource, id, opts, outputDir)
+}
+
+func (c *Client) initDeezerClient(ctx context.Context, opts Options) error {
 	var err error
 	c.deezerClient, err = deezer.NewClient(ctx, c.appConfig)
 	if err != nil {
 		return err
 	}
 
-	var resource deezer.Resource
-	switch c.resourceType {
-	case "album":
-		resource = &deezer.Album{}
-	case "playlist":
-		resource = &deezer.Playlist{}
-	default:
-		return fmt.Errorf("unsupported resource type: %s", c.resourceType)
+	if !c.deezerClient.Session.Premium && (opts.Quality == "mp3_320" || opts.Quality == "flac") {
+		return fmt.Errorf("premium account required for '%s' quality", opts.Quality)
+	}
+
+	return nil
+}
+
+func (c *Client) prepareResource(ctx context.Context, id string, opts Options) (deezer.Resource, string, error) {
+	resource, err := c.createResource()
+	if err != nil {
+		return nil, "", err
 	}
 
 	if err := c.deezerClient.FetchResource(ctx, resource, id); err != nil {
-		return fmt.Errorf("failed to fetch resource: %w", err)
+		return nil, "", fmt.Errorf("failed to fetch resource: %w", err)
 	}
 
 	songs := resource.GetSongs()
 	if len(songs) == 0 {
-		return fmt.Errorf("%s has no songs", c.resourceType)
+		if c.resourceType == "track" {
+			return nil, "", fmt.Errorf("track with ID %s not found", id)
+		}
+		return nil, "", fmt.Errorf("%s has no songs", c.resourceType)
 	}
 
-	rootOutputDir := c.appConfig.OutputDir
-	resourceOutputDir := resource.GetOutputDir(rootOutputDir)
-	if err := fileutil.EnsureDir(resourceOutputDir); err != nil {
-		return fmt.Errorf("failed to create output directory: %w", err)
+	if c.resourceType == "artist" && len(songs) > opts.Limit {
+		resource.SetSongs(songs[:opts.Limit])
 	}
 
+	outputDir := resource.GetOutputDir(c.appConfig.OutputDir)
+	if err := fileutil.EnsureDir(outputDir); err != nil {
+		return nil, "", fmt.Errorf("failed to create output directory: %w", err)
+	}
+
+	return resource, outputDir, nil
+}
+
+func (c *Client) createResource() (deezer.Resource, error) {
+	switch c.resourceType {
+	case "album":
+		return &deezer.Album{}, nil
+	case "playlist":
+		return &deezer.Playlist{}, nil
+	case "artist":
+		return &deezer.Artist{}, nil
+	case "track":
+		return &deezer.Track{}, nil
+	default:
+		return nil, fmt.Errorf("unsupported resource type: %s", c.resourceType)
+	}
+}
+
+func (c *Client) downloadAllSongs(ctx context.Context, resource deezer.Resource, resourceID string, opts Options, outputDir string) error {
+	songs := resource.GetSongs()
 	startTime := time.Now()
-	fmt.Printf("%s\n\nStarting download...\n\n", resource)
 
-	downloaded := 0
-	skipped := 0
-	failed := 0
+	if c.resourceType != "track" {
+		fmt.Printf("%s\n\nStarting download...\n\n", resource)
+	}
+
+	progress := newProgressTracker(c.Logger, len(songs), c.resourceType)
 
 	for i, song := range songs {
 		if ctx.Err() != nil {
 			return ctx.Err()
 		}
 
-		trackProgress := fmt.Sprintf("[%d/%d]", i+1, len(songs))
-
-		sp := spinner.New(spinner.CharSets[14], 100*time.Millisecond)
-		sp.Writer = os.Stdout
-		sp.Prefix = trackProgress + " "
-		sp.Suffix = fmt.Sprintf(" Downloading: %s - %s", song.Artist, song.Title)
-		sp.Start()
-
-		warnings, err := c.downloadSong(ctx, resource, song, opts, resourceOutputDir)
+		sp := progress.startDownload(i, song)
+		result := c.downloadSong(ctx, resource, song, opts, outputDir)
 		sp.Stop()
 
-		if err != nil {
-			if errors.Is(err, context.Canceled) {
-				return err
-			}
-
-			if path, ok := IsSkipError(err); ok {
-				skipped++
-				fmt.Printf("%s ↷ Skipped: %s - %s\n    Already exists at: %s\n", trackProgress, song.Artist, song.Title, path)
-				continue
-			}
-
-			failed++
-			fmt.Printf("%s ✖ Failed: %s - %s:\n    Error: %v\n", trackProgress, song.Artist, song.Title, err)
-			continue
+		if result.err != nil && errors.Is(result.err, context.Canceled) {
+			return result.err
 		}
 
-		symbol := "✔"
-		if len(warnings) > 0 {
-			symbol = "⚠"
-		}
-
-		downloaded++
-		fmt.Printf("%s %s Downloaded: %s - %s\n", trackProgress, symbol, song.Artist, song.Title)
-		for _, w := range warnings {
-			fmt.Printf("    Warning: %s\n", w)
-		}
+		progress.handleResult(i, song, result)
 	}
 
-	fmt.Printf(`
-================== [ Summary ] ==================
-Downloaded:     %d
-Skipped:        %d
-Failed:         %d
-Elapsed time:   %s
-Files saved to: %s
-=================================================
-`,
-		downloaded,
-		skipped,
-		failed,
-		time.Since(startTime).Round(time.Second),
-		resourceOutputDir,
-	)
+	progress.printSummary(resource.GetTitle(), resourceID, outputDir, time.Since(startTime))
 
 	return nil
 }
 
-func (c *Client) downloadSong(ctx context.Context, resource deezer.Resource, song *deezer.Song, opts Options, outputDir string) ([]string, error) {
-	var warnings []string
-
+func (c *Client) downloadSong(ctx context.Context, resource deezer.Resource, song *deezer.Song, opts Options, outputDir string) downloadResult {
 	media, err := c.deezerClient.FetchMedia(ctx, song, opts.Quality)
 	if err != nil {
-		return warnings, fmt.Errorf("failed to fetch media: %w", err)
+		return downloadResult{err: fmt.Errorf("failed to fetch media: %w", err)}
 	}
 
-	fileName := song.GetFileName(c.resourceType, song, media)
-	outputPath := path.Join(outputDir, fileName)
+	mediaFormat := media.GetFormat()
+	if opts.Strict && strings.ToLower(mediaFormat) != opts.Quality {
+		return downloadResult{err: fmt.Errorf("requested quality '%s' not available", opts.Quality)}
+	}
 
-	mediaFormat, err := media.GetFormat()
+	if skipPath, skip := c.shouldSkipDownload(ctx, song.ID, mediaFormat); skip {
+		return downloadResult{skipped: true, path: skipPath}
+	}
+
+	metadataChan := make(chan metadataResult, 1)
+	go func() {
+		metadataChan <- fetchMetadata(c.deezerClient.Session.HttpClient, ctx, song, opts)
+	}()
+
+	stream, err := c.deezerClient.GetMediaStream(ctx, media)
 	if err != nil {
-		return warnings, fmt.Errorf("failed to get media format: %w", err)
-	}
-
-	if path, skip := c.shouldSkipDownload(ctx, song.ID, mediaFormat); skip {
-		return warnings, SkipError{Path: path}
-	}
-
-	var metricsChan chan *bpm.Metrics
-	var errChan chan error
-	if opts.BPM {
-		metricsChan = make(chan *bpm.Metrics, 1)
-		errChan = make(chan error, 1)
-		go func() {
-			metrics, err := bpm.FetchMetrics(ctx, c.deezerClient.Session.HttpClient, song.Artist, song.Title, song.Duration)
-			if err != nil {
-				errChan <- err
-				return
-			}
-
-			metricsChan <- metrics
-		}()
-	}
-
-	stream, err := c.deezerClient.GetMediaStream(ctx, media, song.ID)
-	if err != nil {
-		return warnings, fmt.Errorf("failed to get media stream: %w", err)
+		return downloadResult{err: fmt.Errorf("failed to get media stream: %w", err)}
 	}
 
 	dlCtx, cancel := context.WithTimeout(ctx, opts.Timeout)
 	defer cancel()
 
-	key := crypto.GetKey(c.appConfig.SecretKey, song.ID)
+	fileName := song.GetFileName(c.resourceType, mediaFormat)
+	outputPath := path.Join(outputDir, fileName)
+
+	key := crypto.GetKey(song.ID)
 	if err := c.streamToFile(dlCtx, stream, outputPath, key); err != nil {
 		fileutil.DeleteFile(outputPath)
-
-		return warnings, fmt.Errorf("failed to stream to file: %w", err)
+		return downloadResult{err: fmt.Errorf("failed to stream to file: %w", err)}
 	}
 
-	metrics := &bpm.Metrics{}
-	if opts.BPM {
-		select {
-		case metrics = <-metricsChan:
-		case err := <-errChan:
-			if !errors.Is(err, context.Canceled) {
-				warnings = append(warnings, fmt.Sprintf("failed to fetch BPM and key: %v", err))
-			}
-		}
+	var warnings []string
+
+	if opts.Quality != strings.ToLower(mediaFormat) {
+		warnings = append(warnings, fmt.Sprintf("requested quality '%s' not available, using '%s' instead", opts.Quality, strings.ToLower(mediaFormat)))
 	}
 
 	cover, err := c.deezerClient.FetchCoverImage(ctx, song)
@@ -209,9 +192,11 @@ func (c *Client) downloadSong(ctx context.Context, resource deezer.Resource, son
 		warnings = append(warnings, fmt.Sprintf("failed to fetch cover image: %v", err))
 	}
 
-	warnings = append(warnings, c.finalizeDownload(resource, song, outputPath, mediaFormat, cover, metrics)...)
+	metadata := <-metadataChan
+	warnings = append(warnings, metadata.warnings...)
+	warnings = append(warnings, c.finalizeDownload(resource, song, outputPath, mediaFormat, metadata.genre, cover, metadata.bpmKey)...)
 
-	return warnings, nil
+	return downloadResult{warnings: warnings}
 }
 
 func (c *Client) streamToFile(ctx context.Context, stream io.ReadCloser, outputPath string, key []byte) error {
@@ -229,22 +214,18 @@ func (c *Client) streamToFile(ctx context.Context, stream io.ReadCloser, outputP
 		case <-ctx.Done():
 			return ctx.Err()
 		default:
-			// continue
 		}
 
 		totalRead := 0
 		for totalRead < chunkSize {
 			n, err := stream.Read(buffer[totalRead:])
+			totalRead += n
 			if err != nil {
 				if errors.Is(err, io.EOF) {
 					break
 				}
 				return err
 			}
-
-			if n > 0 {
-				totalRead += n
-			}
 		}
 
 		if totalRead == 0 {
@@ -258,8 +239,7 @@ func (c *Client) streamToFile(ctx context.Context, stream io.ReadCloser, outputP
 			}
 		}
 
-		_, err = file.Write(buffer[:totalRead])
-		if err != nil {
+		if _, err = file.Write(buffer[:totalRead]); err != nil {
 			return err
 		}
 
@@ -271,10 +251,10 @@ func (c *Client) streamToFile(ctx context.Context, stream io.ReadCloser, outputP
 	return nil
 }
 
-func (c *Client) finalizeDownload(resource deezer.Resource, song *deezer.Song, outputPath, mediaFormat string, cover []byte, metrics *bpm.Metrics) []string {
+func (c *Client) finalizeDownload(resource deezer.Resource, song *deezer.Song, outputPath, mediaFormat, genre string, cover []byte, bpmKey bpmKey) []string {
 	var warnings []string
 
-	if err := tags.AddTags(resource, song, cover, outputPath, metrics.BPM, metrics.Key); err != nil {
+	if err := tags.AddTags(resource, song, cover, outputPath, bpmKey.BPM, bpmKey.Key, genre); err != nil {
 		warnings = append(warnings, fmt.Sprintf("failed to add tags: %v", err))
 	}
 

internal/downloader/metadata.go

@@ -0,0 +1,80 @@
+package downloader
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"net/http"
+
+	"github.com/mathismqn/godeez/internal/deezer"
+	"github.com/mathismqn/godeez/internal/provider"
+)
+
+type bpmKey struct {
+	BPM string
+	Key string
+}
+
+type metadataResult struct {
+	bpmKey   bpmKey
+	genre    string
+	warnings []string
+}
+
+func fetchMetadata(httpClient *http.Client, ctx context.Context, song *deezer.Song, opts Options) metadataResult {
+	if !opts.BPM && !opts.Genre {
+		return metadataResult{}
+	}
+
+	type bpmResult struct {
+		value bpmKey
+		err   error
+	}
+	type genreResult struct {
+		value string
+		err   error
+	}
+
+	bpmChan := make(chan bpmResult, 1)
+	genreChan := make(chan genreResult, 1)
+
+	if opts.BPM {
+		go func() {
+			result, err := provider.FetchBPM(ctx, httpClient, song.Artist, song.Title, song.Duration)
+			bpmChan <- bpmResult{value: bpmKey{BPM: result.BPM, Key: result.Key}, err: err}
+		}()
+	}
+
+	if opts.Genre {
+		go func() {
+			genre, err := provider.FetchGenre(ctx, httpClient, song.Artist, song.GetTitle())
+			genreChan <- genreResult{value: genre, err: err}
+		}()
+	}
+
+	var result metadataResult
+
+	if opts.BPM {
+		r := <-bpmChan
+		if r.err != nil {
+			if !errors.Is(r.err, context.Canceled) {
+				result.warnings = append(result.warnings, fmt.Sprintf("failed to fetch BPM and key: %v", r.err))
+			}
+		} else {
+			result.bpmKey = r.value
+		}
+	}
+
+	if opts.Genre {
+		r := <-genreChan
+		if r.err != nil {
+			if !errors.Is(r.err, context.Canceled) {
+				result.warnings = append(result.warnings, fmt.Sprintf("failed to fetch genre: %v", r.err))
+			}
+		} else {
+			result.genre = r.value
+		}
+	}
+
+	return result
+}

internal/downloader/options.go

@@ -9,19 +9,30 @@ var validQualities = map[string]bool{
 	"mp3_128": true,
 	"mp3_320": true,
 	"flac":    true,
-	"best":    true,
 }
 
 type Options struct {
 	Quality string
 	Timeout time.Duration
+	Limit   int
 	BPM     bool
+	Genre   bool
+	Strict  bool
 }
 
 func (o *Options) Validate() error {
 	if !validQualities[o.Quality] {
 		return fmt.Errorf("invalid quality option: %s", o.Quality)
 	}
+	if o.Timeout <= 0 {
+		return fmt.Errorf("timeout must be a positive duration")
+	}
+	if o.Limit <= 0 {
+		return fmt.Errorf("limit must be a positive integer")
+	}
+	if o.Limit > 100 {
+		return fmt.Errorf("limit must not exceed 100")
+	}
 
 	return nil
 }

internal/downloader/progress.go

@@ -0,0 +1,130 @@
+package downloader
+
+import (
+	"fmt"
+	"math/rand"
+	"os"
+	"time"
+
+	"github.com/briandowns/spinner"
+	"github.com/mathismqn/godeez/internal/deezer"
+	"github.com/mathismqn/godeez/internal/logger"
+)
+
+type downloadResult struct {
+	skipped  bool
+	path     string
+	warnings []string
+	err      error
+}
+
+type downloadStats struct {
+	downloaded int
+	skipped    int
+	failed     int
+	warnings   int
+}
+
+type progressTracker struct {
+	logger       *logger.Logger
+	stats        downloadStats
+	totalSongs   int
+	resourceType string
+}
+
+func newProgressTracker(logger *logger.Logger, totalSongs int, resourceType string) *progressTracker {
+	return &progressTracker{
+		logger:       logger,
+		totalSongs:   totalSongs,
+		resourceType: resourceType,
+	}
+}
+
+func (pt *progressTracker) startDownload(index int, song *deezer.Song) *spinner.Spinner {
+	trackProgress := fmt.Sprintf("[%d/%d]", index+1, pt.totalSongs)
+
+	sp := spinner.New(spinner.CharSets[14], 100*time.Millisecond)
+	sp.Writer = os.Stdout
+	sp.Prefix = trackProgress + " "
+	sp.Suffix = fmt.Sprintf(" Downloading: %s - %s", song.Artist, song.GetTitle())
+	sp.Start()
+
+	return sp
+}
+
+func (pt *progressTracker) handleResult(index int, song *deezer.Song, result downloadResult) {
+	trackProgress := fmt.Sprintf("[%d/%d]", index+1, pt.totalSongs)
+	songTitle := song.GetTitle()
+
+	if result.skipped {
+		pt.stats.skipped++
+		fmt.Printf("%s ↷ Skipped: %s - %s\n    Already exists at: %s\n",
+			trackProgress, song.Artist, songTitle, result.path)
+		return
+	}
+
+	if result.err != nil {
+		pt.stats.failed++
+		pt.logger.Errorf("Failed to download %s - %s: %v\n", song.Artist, songTitle, result.err)
+		fmt.Printf("%s ✖ Failed: %s - %s:\n    Error: %v\n",
+			trackProgress, song.Artist, songTitle, result.err)
+		return
+	}
+
+	pt.stats.downloaded++
+	if len(result.warnings) > 0 {
+		pt.stats.warnings++
+	}
+	pt.logger.Infof("Downloaded %s - %s\n", song.Artist, songTitle)
+
+	symbol := "✔"
+	if len(result.warnings) > 0 {
+		symbol = "⚠"
+	}
+	fmt.Printf("%s %s Downloaded: %s - %s\n", trackProgress, symbol, song.Artist, songTitle)
+
+	for _, w := range result.warnings {
+		pt.logger.Warnf("Warning: %s\n", w)
+		fmt.Printf("    Warning: %s\n", w)
+	}
+}
+
+func (pt *progressTracker) printSummary(resourceTitle, resourceID, outputDir string, elapsed time.Duration) {
+	if pt.stats.downloaded > 0 || pt.stats.failed > 0 {
+		pt.logger.Infof("Resource %s (%s): %d downloaded, %d skipped, %d failed\n",
+			resourceTitle, resourceID, pt.stats.downloaded, pt.stats.skipped, pt.stats.failed)
+	}
+
+	if pt.resourceType != "track" {
+		warningsLine := ""
+		if pt.stats.warnings > 0 {
+			warningsLine = fmt.Sprintf("\nWarnings:       %d", pt.stats.warnings)
+		}
+		fmt.Printf(`
+================== [ Summary ] ==================
+Downloaded:     %d
+Skipped:        %d
+Failed:         %d%s
+Elapsed time:   %s
+Files saved to: %s
+=================================================
+`,
+			pt.stats.downloaded,
+			pt.stats.skipped,
+			pt.stats.failed,
+			warningsLine,
+			elapsed.Round(time.Second),
+			outputDir,
+		)
+
+		if pt.stats.downloaded > 0 {
+			pt.showSupportMessage()
+		}
+	}
+}
+
+func (pt *progressTracker) showSupportMessage() {
+	if rand.Float64() < 0.1 {
+		fmt.Printf("\n💖 Enjoying GoDeez? Give us a ⭐ on GitHub: https://github.com/mathismqn/godeez\n")
+	}
+}

internal/downloader/skip.go

@@ -7,37 +7,31 @@ import (
 	"github.com/mathismqn/godeez/internal/store"
 )
 
-type SkipError struct {
-	Path string
-}
-
-func (e SkipError) Error() string {
-	return e.Path
-}
-
-func IsSkipError(err error) (string, bool) {
-	if skipErr, ok := err.(SkipError); ok {
-		return skipErr.Path, true
-	}
-	return "", false
-}
-
 func (c *Client) shouldSkipDownload(ctx context.Context, songID, mediaFormat string) (string, bool) {
-	if existing, err := store.GetDownloadInfo(songID); err == nil && existing.Quality == mediaFormat {
-		if fileutil.FileExists(existing.Path) {
-			return existing.Path, true
-		}
-		if existing.Hash != "" {
-			if err := c.initHashIndex(ctx); err == nil {
-				if foundPath, ok := c.hashIndex.Find(existing.Hash); ok {
-					existing.Path = foundPath
-					_ = existing.Save()
-
-					return foundPath, true
-				}
-			}
-		}
+	existing, err := store.GetDownloadInfo(songID)
+	if err != nil || existing.Quality != mediaFormat {
+		return "", false
 	}
 
-	return "", false
+	if fileutil.FileExists(existing.Path) {
+		return existing.Path, true
+	}
+
+	if existing.Hash == "" {
+		return "", false
+	}
+
+	if err := c.initHashIndex(ctx); err != nil {
+		return "", false
+	}
+
+	foundPath, ok := c.hashIndex.Find(existing.Hash)
+	if !ok {
+		return "", false
+	}
+
+	existing.Path = foundPath
+	_ = existing.Save()
+
+	return foundPath, true
 }

internal/fileutil/file.go

@@ -2,6 +2,7 @@ package fileutil
 
 import (
 	"crypto/sha256"
+	"encoding/hex"
 	"fmt"
 	"io"
 	"os"
@@ -18,13 +19,11 @@ func EnsureDir(path string) error {
 	if !info.IsDir() {
 		return fmt.Errorf("file already exists at %s", path)
 	}
-
 	return nil
 }
 
 func FileExists(path string) bool {
 	info, err := os.Stat(path)
-
 	return err == nil && !info.IsDir()
 }
 
@@ -32,7 +31,6 @@ func DeleteFile(path string) error {
 	if !FileExists(path) {
 		return nil
 	}
-
 	return os.Remove(path)
 }
 
@@ -43,10 +41,10 @@ func GetFileHash(path string) (string, error) {
 	}
 	defer file.Close()
 
-	hash := sha256.New()
-	if _, err := io.Copy(hash, file); err != nil {
+	h := sha256.New()
+	if _, err := io.Copy(h, file); err != nil {
 		return "", err
 	}
 
-	return fmt.Sprintf("%x", hash.Sum(nil)), nil
+	return hex.EncodeToString(h.Sum(nil)), nil
 }

internal/fileutil/hashindex.go

@@ -5,6 +5,7 @@ import (
 	"crypto/sha256"
 	"encoding/hex"
 	"io"
+	"io/fs"
 	"os"
 	"path/filepath"
 )
@@ -16,12 +17,11 @@ type HashIndex struct {
 func NewHashIndex(ctx context.Context, root string) (*HashIndex, error) {
 	index := &HashIndex{files: make(map[string]string)}
 
-	err := filepath.Walk(root, func(path string, info os.FileInfo, err error) error {
+	err := filepath.WalkDir(root, func(path string, d fs.DirEntry, err error) error {
 		if ctx.Err() != nil {
 			return ctx.Err()
 		}
-
-		if err != nil || info.IsDir() {
+		if err != nil || d.IsDir() {
 			return nil
 		}
 
@@ -36,12 +36,9 @@ func NewHashIndex(ctx context.Context, root string) (*HashIndex, error) {
 			return nil
 		}
 
-		sum := hex.EncodeToString(h.Sum(nil))
-		index.files[sum] = path
-
+		index.files[hex.EncodeToString(h.Sum(nil))] = path
 		return nil
 	})
-
 	if err != nil {
 		return nil, err
 	}
@@ -51,6 +48,5 @@ func NewHashIndex(ctx context.Context, root string) (*HashIndex, error) {
 
 func (h *HashIndex) Find(hash string) (string, bool) {
 	path, ok := h.files[hash]
-
 	return path, ok
 }

internal/logger/logger.go

@@ -0,0 +1,21 @@
+package logger
+
+import "log"
+
+type Logger struct {
+	l *log.Logger
+}
+
+func New(l *log.Logger) *Logger {
+	return &Logger{l: l}
+}
+
+func (l *Logger) logf(level, format string, args ...any) {
+	if l.l != nil {
+		l.l.Printf("["+level+"] "+format, args...)
+	}
+}
+
+func (l *Logger) Infof(format string, args ...any)  { l.logf("INFO", format, args...) }
+func (l *Logger) Warnf(format string, args ...any)  { l.logf("WARN", format, args...) }
+func (l *Logger) Errorf(format string, args ...any) { l.logf("ERROR", format, args...) }

internal/provider/bpm.go

@@ -0,0 +1,159 @@
+package provider
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"io"
+	"net/http"
+	neturl "net/url"
+	"regexp"
+	"strconv"
+	"strings"
+
+	"github.com/PuerkitoBio/goquery"
+)
+
+type BPMKey struct {
+	BPM string
+	Key string
+}
+
+var (
+	bpmRegex  = regexp.MustCompile(`tempo of <span[^>]*>(\d+) BPM`)
+	keyRegex  = regexp.MustCompile(`with a <span[^>]*>([A-G](?:♯|#|♭|b)?(?:/[A-G](?:♯|#|♭|b)?)?)</span> key`)
+	modeRegex = regexp.MustCompile(`a  <span[^>]*>([a-z]+)</span> mode`)
+)
+
+func FetchBPM(ctx context.Context, httpClient *http.Client, artist, title, duration string) (BPMKey, error) {
+	songURL, err := findSongURL(ctx, httpClient, artist, title, duration)
+	if err != nil {
+		return BPMKey{}, err
+	}
+
+	html, err := fetchBPMPage(ctx, httpClient, songURL)
+	if err != nil {
+		return BPMKey{}, err
+	}
+
+	return parseBPM(html)
+}
+
+func findSongURL(ctx context.Context, httpClient *http.Client, artist, title, duration string) (string, error) {
+	const rootURL = "https://songbpm.com"
+
+	values := neturl.Values{}
+	values.Add("query", fmt.Sprintf("%s %s", artist, title))
+
+	req, err := http.NewRequestWithContext(ctx, "POST", rootURL+"/searches", bytes.NewBufferString(values.Encode()))
+	if err != nil {
+		return "", err
+	}
+	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	req.Header.Set("Origin", rootURL)
+
+	resp, err := httpClient.Do(req)
+	if err != nil {
+		return "", err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return "", fmt.Errorf("unexpected status code: %d", resp.StatusCode)
+	}
+
+	doc, err := goquery.NewDocumentFromReader(resp.Body)
+	if err != nil {
+		return "", err
+	}
+
+	wantDuration, err := strconv.Atoi(duration)
+	if err != nil {
+		return "", fmt.Errorf("invalid duration: %w", err)
+	}
+
+	lowerTitle := strings.ToLower(title)
+	lowerArtist := strings.ToLower(artist)
+
+	var matchURL string
+	doc.Find("a.flex.flex-col").EachWithBreak(func(_ int, sel *goquery.Selection) bool {
+		text := strings.ToLower(sel.Text())
+		if !strings.Contains(text, lowerTitle) || !strings.Contains(text, lowerArtist) {
+			return true
+		}
+
+		durationStr := strings.TrimSpace(sel.Find("div.flex-1.flex-col.items-center").Eq(1).Find("span.text-2xl").Text())
+		parts := strings.Split(durationStr, ":")
+		if len(parts) != 2 {
+			return true
+		}
+		minutes, err := strconv.Atoi(parts[0])
+		if err != nil {
+			return true
+		}
+		seconds, err := strconv.Atoi(parts[1])
+		if err != nil {
+			return true
+		}
+
+		const toleranceSec = 2
+		foundDuration := minutes*60 + seconds
+		if foundDuration <= wantDuration-toleranceSec || foundDuration >= wantDuration+toleranceSec {
+			return true
+		}
+
+		matchURL = sel.AttrOr("href", "")
+		return false
+	})
+
+	if matchURL == "" {
+		return "", fmt.Errorf("no data found")
+	}
+
+	return rootURL + matchURL, nil
+}
+
+func fetchBPMPage(ctx context.Context, httpClient *http.Client, url string) (string, error) {
+	req, err := http.NewRequestWithContext(ctx, "GET", url, nil)
+	if err != nil {
+		return "", err
+	}
+
+	resp, err := httpClient.Do(req)
+	if err != nil {
+		return "", err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return "", fmt.Errorf("unexpected status code: %d", resp.StatusCode)
+	}
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return "", err
+	}
+
+	return string(body), nil
+}
+
+func parseBPM(html string) (BPMKey, error) {
+	bpmMatch := bpmRegex.FindStringSubmatch(html)
+	keyMatch := keyRegex.FindStringSubmatch(html)
+	modeMatch := modeRegex.FindStringSubmatch(html)
+
+	if len(bpmMatch) != 2 || len(keyMatch) != 2 || len(modeMatch) != 2 {
+		return BPMKey{}, fmt.Errorf("no data found")
+	}
+
+	bpm := bpmMatch[1]
+	key := strings.SplitN(keyMatch[1], "/", 2)[0]
+	key = strings.ReplaceAll(key, "\u266f", "#")
+	key = strings.ReplaceAll(key, "\u266d", "b")
+
+	if modeMatch[1] == "minor" {
+		key += "m"
+	}
+
+	return BPMKey{BPM: bpm, Key: key}, nil
+}

internal/provider/genre.go

@@ -0,0 +1,124 @@
+package provider
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+	"strings"
+
+	"github.com/PuerkitoBio/goquery"
+)
+
+var electronicKeywords = toLower([]string{
+	"Ambient", "Bass", "Big Room", "Breakbeat", "Dance", "Disco", "Downtempo",
+	"Drum And Bass", "Dub", "Dubstep", "EDM", "Electro", "Electronic", "Electronica",
+	"Eurodance", "Gabber", "Garage", "Hardcore", "Hardstyle", "House", "Industrial",
+	"Jungle", "Moombahton", "Synthpop", "Synthwave", "Techno", "Trance", "Trap",
+	"Trip Hop", "Vaporwave",
+})
+
+var nonElectronicKeywords = toLower([]string{
+	"Blues", "Chillout", "Classical", "Country", "Folk", "Funk", "Hip Hop", "Jazz",
+	"Latin", "Metal", "Pop", "R&B", "Rap", "Reggae", "Rock", "Soul",
+})
+
+func toLower(ss []string) []string {
+	out := make([]string, len(ss))
+	for i, s := range ss {
+		out[i] = strings.ToLower(s)
+	}
+	return out
+}
+
+func FetchGenre(ctx context.Context, httpClient *http.Client, artist, title string) (string, error) {
+	reqURL := fmt.Sprintf("https://www.last.fm/music/%s/%s/+tags", artist, title)
+
+	doc, err := fetchGenrePage(ctx, httpClient, reqURL)
+	if err != nil {
+		return "", err
+	}
+
+	tags := parseGenreTags(doc)
+	if len(tags) > 2 {
+		tags = tags[:2]
+	}
+
+	filtered := filterTags(tags)
+	if len(filtered) == 0 {
+		return "", fmt.Errorf("no data found")
+	}
+
+	return formatTags(filtered), nil
+}
+
+func fetchGenrePage(ctx context.Context, httpClient *http.Client, url string) (*goquery.Document, error) {
+	req, err := http.NewRequestWithContext(ctx, "GET", url, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	resp, err := httpClient.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return nil, fmt.Errorf("unexpected status code: %d", resp.StatusCode)
+	}
+
+	return goquery.NewDocumentFromReader(resp.Body)
+}
+
+func parseGenreTags(doc *goquery.Document) []string {
+	var tags []string
+	doc.Find("ol.big-tags .big-tags-item-name a").Each(func(_ int, s *goquery.Selection) {
+		if tag := strings.TrimSpace(s.Text()); tag != "" {
+			tags = append(tags, tag)
+		}
+	})
+	return tags
+}
+
+func matchesKeyword(tag string, keywords []string) bool {
+	tagLower := strings.ToLower(tag)
+	for _, kw := range keywords {
+		if strings.Contains(tagLower, kw) {
+			return true
+		}
+	}
+	return false
+}
+
+func filterTags(tags []string) []string {
+	var electronic, nonElectronic []string
+
+	for _, tag := range tags {
+		if matchesKeyword(tag, electronicKeywords) {
+			electronic = append(electronic, tag)
+		} else if matchesKeyword(tag, nonElectronicKeywords) {
+			nonElectronic = append(nonElectronic, tag)
+		}
+	}
+
+	if len(electronic) > 0 {
+		return append(electronic, nonElectronic...)
+	}
+	return electronic
+}
+
+func formatTags(tags []string) string {
+	formatted := make([]string, 0, len(tags))
+	for _, tag := range tags {
+		tag = strings.TrimSpace(tag)
+		if tag == "" {
+			continue
+		}
+		words := strings.Fields(tag)
+		for i, w := range words {
+			words[i] = strings.ToUpper(w[:1]) + strings.ToLower(w[1:])
+		}
+		formatted = append(formatted, strings.Join(words, " "))
+	}
+	return strings.Join(formatted, " / ")
+}

internal/store/download_info.go

@@ -16,6 +16,8 @@ type DownloadInfo struct {
 	Downloaded time.Time `json:"downloaded_at"`
 }
 
+var trackBucket = []byte("tracks")
+
 func GetDownloadInfo(songID string) (*DownloadInfo, error) {
 	var info DownloadInfo
 
@@ -39,9 +41,9 @@ func GetDownloadInfo(songID string) (*DownloadInfo, error) {
 
 func (d *DownloadInfo) Save() error {
 	return db.Update(func(tx *bbolt.Tx) error {
-		b := tx.Bucket(trackBucket)
-		if b == nil {
-			return fmt.Errorf("bucket not found")
+		b, err := tx.CreateBucketIfNotExists(trackBucket)
+		if err != nil {
+			return fmt.Errorf("failed to create bucket: %w", err)
 		}
 
 		data, err := json.Marshal(d)
@@ -49,11 +51,6 @@ func (d *DownloadInfo) Save() error {
 			return err
 		}
 
-		err = b.Put([]byte(d.SongID), data)
-		if err != nil {
-			return err
-		}
-
-		return nil
+		return b.Put([]byte(d.SongID), data)
 	})
 }

internal/store/store.go

@@ -7,26 +7,13 @@ import (
 	bolt "go.etcd.io/bbolt"
 )
 
-var (
-	db          *bolt.DB
-	trackBucket = []byte("tracks")
-)
+var db *bolt.DB
 
 func OpenDB(cfgDir string) error {
 	var err error
-
-	dbPath := path.Join(cfgDir, "tracks.db")
-	db, err = bolt.Open(dbPath, 0600, nil)
+	db, err = bolt.Open(path.Join(cfgDir, ".tracks.db"), 0600, nil)
 	if err != nil {
 		return fmt.Errorf("failed to open database: %w", err)
 	}
-
-	if err := db.Update(func(tx *bolt.Tx) error {
-		_, err := tx.CreateBucketIfNotExists(trackBucket)
-		return err
-	}); err != nil {
-		return fmt.Errorf("failed to create bucket: %w", err)
-	}
-
 	return nil
 }

internal/tags/flac.go

@@ -16,48 +16,52 @@ type flacTagger struct {
 	index int
 }
 
-func (t *flacTagger) addTags(resource deezer.Resource, song *deezer.Song, cover []byte, path, tempo, key string) error {
+func (t *flacTagger) addTags(resource deezer.Resource, song *deezer.Song, cover []byte, path, tempo, key, genre string) error {
 	if album, ok := resource.(*deezer.Album); ok {
-		dateParts := strings.Split(album.Results.Data.PhysicalReleaseDate, "-")
-		if len(dateParts) == 3 {
-			album.Results.Data.PhysicalReleaseDate = dateParts[0]
+		if parts := strings.Split(album.Results.Data.PhysicalReleaseDate, "-"); len(parts) == 3 {
+			album.Results.Data.PhysicalReleaseDate = parts[0]
 		}
 
-		t.addTag("ALBUM", album.Results.Data.Title)
+		t.addTag("TRACKNUMBER", song.TrackNumber)
 		t.addTag("ALBUMARTIST", album.Results.Data.Artist)
+		t.addTag("ALBUM", album.Results.Data.Title)
 		t.addTag("PUBLISHER", album.Results.Data.Label)
 		t.addTag("ORIGINALDATE", album.Results.Data.OriginalReleaseDate)
 		t.addTag("DATE", album.Results.Data.PhysicalReleaseDate)
 		t.addTag("COMMENT", album.Results.Data.ProducerLine)
-		t.addTag("TRACKNUMBER", song.TrackNumber)
+		t.addTag("COPYRIGHT", album.Results.Data.Copyright)
 	}
 
-	t.addTag("TITLE", song.Title)
 	t.addTag("ARTIST", strings.Join(song.Contributors.MainArtists, ", "))
+	t.addTag("TITLE", song.GetTitle())
 	t.addTag("COMPOSER", strings.Join(song.Contributors.Composers, ", "))
 	t.addTag("LYRICIST", strings.Join(song.Contributors.Authors, ", "))
+	t.addTag("GENRE", genre)
 	t.addTag("REPLAYGAIN_TRACK_GAIN", song.Gain)
 	t.addTag("ISRC", song.ISRC)
-
 	t.addTag("BPM", tempo)
 	t.addTag("KEY", key)
 	t.addTag("INITIALKEY", key)
 
-	cmtsmeta := t.cmts.Marshal()
+	cmtsMeta := t.cmts.Marshal()
 	if t.index > 0 {
-		t.file.Meta[t.index] = &cmtsmeta
+		t.file.Meta[t.index] = &cmtsMeta
 	} else {
-		t.file.Meta = append(t.file.Meta, &cmtsmeta)
+		t.file.Meta = append(t.file.Meta, &cmtsMeta)
 	}
 
 	picture, err := flacpicture.NewFromImageData(flacpicture.PictureTypeFrontCover, "Front cover", cover, "image/jpeg")
 	if err != nil {
 		return err
 	}
-	picturemeta := picture.Marshal()
-	t.file.Meta = append(t.file.Meta, &picturemeta)
+	pictureMeta := picture.Marshal()
+	t.file.Meta = append(t.file.Meta, &pictureMeta)
 
-	return t.saveTags(path)
+	tmpPath := path + ".tmp"
+	if err := t.file.Save(tmpPath); err != nil {
+		return err
+	}
+	return os.Rename(tmpPath, path)
 }
 
 func (t *flacTagger) addTag(name, value string) {
@@ -66,26 +70,14 @@ func (t *flacTagger) addTag(name, value string) {
 	}
 }
 
-func (t *flacTagger) saveTags(path string) error {
-	tempPath := path + ".tmp"
-	t.file.Save(tempPath)
-
-	return os.Rename(tempPath, path)
-}
-
-func extractFLACComment(file *flac.File) (*flacvorbis.MetaDataBlockVorbisComment, int, error) {
-	var cmt *flacvorbis.MetaDataBlockVorbisComment
-	var cmtIdx int
-	var err error
+func extractFLACComment(file *flac.File) (*flacvorbis.MetaDataBlockVorbisComment, int) {
 	for idx, meta := range file.Meta {
 		if meta.Type == flac.VorbisComment {
-			cmt, err = flacvorbis.ParseFromMetaDataBlock(*meta)
-			cmtIdx = idx
-			if err != nil {
-				return nil, 0, err
+			cmt, err := flacvorbis.ParseFromMetaDataBlock(*meta)
+			if err == nil {
+				return cmt, idx
 			}
 		}
 	}
-
-	return cmt, cmtIdx, nil
+	return nil, 0
 }

internal/tags/id3v2.go

@@ -13,7 +13,7 @@ type id3v2Tagger struct {
 	tag *id3v2.Tag
 }
 
-func (t *id3v2Tagger) addTags(resource deezer.Resource, song *deezer.Song, cover []byte, path, tempo, key string) error {
+func (t *id3v2Tagger) addTags(resource deezer.Resource, song *deezer.Song, cover []byte, path, tempo, key, genre string) error {
 	defer t.tag.Close()
 
 	duration, err := strconv.Atoi(song.Duration)
@@ -23,34 +23,34 @@ func (t *id3v2Tagger) addTags(resource deezer.Resource, song *deezer.Song, cover
 	song.Duration = fmt.Sprintf("%d", duration*1000)
 
 	if album, ok := resource.(*deezer.Album); ok {
-		t.addTag("TALB", album.Results.Data.Title)
+		t.addTag("TRCK", song.TrackNumber)
 		t.addTag("TPE2", album.Results.Data.Artist)
+		t.addTag("TALB", album.Results.Data.Title)
 		t.addTag("TPUB", album.Results.Data.Label)
 		t.addTag("TDOR", album.Results.Data.OriginalReleaseDate)
 		t.addTag("TYER", album.Results.Data.PhysicalReleaseDate)
 		t.addTag("COMM", album.Results.Data.ProducerLine)
-		t.addTag("TRCK", song.TrackNumber)
+		t.addTag("TCOP", album.Results.Data.Copyright)
 	}
 
-	t.addTag("TIT2", song.Title)
 	t.addTag("TPE1", strings.Join(song.Contributors.MainArtists, ", "))
+	t.addTag("TIT2", song.GetTitle())
 	t.addTag("TCOM", strings.Join(song.Contributors.Composers, ", "))
 	t.addTag("TEXT", strings.Join(song.Contributors.Authors, ", "))
+	t.addTag("TCON", genre)
 	t.addTag("TLEN", song.Duration)
-	t.addTXXXTag("GAIN", song.Gain)
-	t.addTXXXTag("ISRC", song.ISRC)
-
 	t.addTag("TBPM", tempo)
 	t.addTag("TKEY", key)
+	t.addTXXX("GAIN", song.Gain)
+	t.addTXXX("ISRC", song.ISRC)
 
-	frame := id3v2.PictureFrame{
+	t.tag.AddAttachedPicture(id3v2.PictureFrame{
 		Encoding:    t.tag.DefaultEncoding(),
 		MimeType:    "image/jpeg",
 		PictureType: id3v2.PTFrontCover,
 		Description: "Cover",
 		Picture:     cover,
-	}
-	t.tag.AddAttachedPicture(frame)
+	})
 
 	return t.tag.Save()
 }
@@ -61,13 +61,12 @@ func (t *id3v2Tagger) addTag(name, value string) {
 	}
 }
 
-func (t *id3v2Tagger) addTXXXTag(description, value string) {
+func (t *id3v2Tagger) addTXXX(description, value string) {
 	if value != "" {
-		udf := id3v2.UserDefinedTextFrame{
+		t.tag.AddUserDefinedTextFrame(id3v2.UserDefinedTextFrame{
 			Encoding:    t.tag.DefaultEncoding(),
 			Description: description,
 			Value:       value,
-		}
-		t.tag.AddUserDefinedTextFrame(udf)
+		})
 	}
 }

internal/tags/tags.go

@@ -10,17 +10,15 @@ import (
 )
 
 type tagger interface {
-	addTags(resource deezer.Resource, song *deezer.Song, cover []byte, path, tempo, key string) error
+	addTags(resource deezer.Resource, song *deezer.Song, cover []byte, filePath, tempo, key, genre string) error
 }
 
 func newTagger(filePath string) (tagger, error) {
-	ext := path.Ext(filePath)
-	if ext == ".mp3" {
+	if path.Ext(filePath) == ".mp3" {
 		tag, err := id3v2.Open(filePath, id3v2.Options{Parse: true})
 		if err != nil {
 			return nil, err
 		}
-
 		return &id3v2Tagger{tag: tag}, nil
 	}
 
@@ -28,22 +26,19 @@ func newTagger(filePath string) (tagger, error) {
 	if err != nil {
 		return nil, err
 	}
-	cmts, idx, err := extractFLACComment(file)
-	if err != nil {
-		return nil, err
-	}
-	if cmts == nil && idx > 0 {
+
+	cmts, idx := extractFLACComment(file)
+	if cmts == nil {
 		cmts = flacvorbis.New()
 	}
 
 	return &flacTagger{file: file, cmts: cmts, index: idx}, nil
 }
 
-func AddTags(resource deezer.Resource, song *deezer.Song, cover []byte, filePath, tempo, key string) error {
-	tagger, err := newTagger(filePath)
+func AddTags(resource deezer.Resource, song *deezer.Song, cover []byte, filePath, tempo, key, genre string) error {
+	t, err := newTagger(filePath)
 	if err != nil {
 		return err
 	}
-
-	return tagger.addTags(resource, song, cover, filePath, tempo, key)
+	return t.addTags(resource, song, cover, filePath, tempo, key, genre)
 }