docs: update for v1.3.0

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

@@ -5,25 +5,49 @@ 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).
 
+## [1.3.0] - 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
-- Restored ability to download tracks **without a Deezer Premium account** (limited to **MP3 128kbps** for free accounts).
+- 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

@@ -13,32 +13,33 @@ 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 (⚠️ non-premium accounts are limited to 128kbps)
-* 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-1.3.0-linux-amd64 /usr/local/bin/godeez
 ```
 
 ## Configuration
@@ -46,12 +47,12 @@ mv godeez-1.1.0-linux-amd64 /usr/local/bin/godeez
 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).
 
 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
+- `config.toml`: main configuration file you need to edit manually
+- `tracks.db`: internal database used to track downloads and avoid duplicates
 
 ### Steps to configure
 
-1. Run the application for the first time: this creates the `.godeez` directory and the `config.toml` file inside it.
+1. Run the application once: this creates the `.godeez` directory and the `config.toml` file.
 2. Edit the `config.toml` file with a text editor to set the required values.
 
 ### Variables to configure
@@ -78,7 +79,6 @@ Here are the key variables you need to set in `config.toml`:
 
 ### Example
 
-Here's an example of a minimal `config.toml` you can customize:
 ```toml
 # ~/.godeez/config.toml
 
@@ -91,7 +91,8 @@ output_dir = ''  # optional
 
 ### 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
 
@@ -109,9 +110,9 @@ Flags:
 
 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 +120,57 @@ 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

@@ -4,13 +4,18 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"strings"
 	"time"
 
+	"github.com/mathismqn/godeez/internal/config"
 	"github.com/mathismqn/godeez/internal/downloader"
 	"github.com/spf13/cobra"
 )
 
-var opts downloader.Options
+var (
+	opts    downloader.Options
+	cfgPath string
+)
 
 var downloadCmd = &cobra.Command{
 	Use:   "download",
@@ -20,28 +25,48 @@ 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().StringVar(&cfgPath, "config", "", "config file (default ~/.godeez/config.toml)")
+	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 {
+	article := "a"
+	if resourceType == "album" {
+		article = "an"
+	}
+
 	cmd := &cobra.Command{
 		Use:   fmt.Sprintf("%s <%s_id>", resourceType, resourceType),
-		Short: fmt.Sprintf("Download songs from %s", resourceType),
+		Short: fmt.Sprintf("Download songs from %s %s", article, resourceType),
 		Args:  cobra.ExactArgs(1),
 		PreRunE: func(cmd *cobra.Command, args []string) error {
+			appConfig, err := config.New(cfgPath)
+			if err != nil {
+				return err
+			}
+			cmd.SetContext(context.WithValue(cmd.Context(), "appConfig", 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)
+			appConfigVal := ctx.Value("appConfig")
+			appConfig, _ := appConfigVal.(*config.Config)
 
+			dl := downloader.New(appConfig, resourceType)
 			if err := dl.Run(ctx, opts, args[0]); err != nil {
 				if errors.Is(err, context.Canceled) {
 					return nil
@@ -54,5 +79,13 @@ func newDownloadCmd(resourceType string) *cobra.Command {
 		},
 	}
 
+	switch resourceType {
+	case "artist":
+		cmd.Short = "Download top songs from an artist"
+		cmd.Flags().IntVarP(&opts.Limit, "limit", "l", 10, "number of songs to download")
+	case "track":
+		cmd.Short = "Download a single track"
+	}
+
 	return cmd
 }

cmd/root.go

@@ -1,27 +1,30 @@
 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)
+		// TEMPORARILY DISABLED:
+		// Watcher autostart (EnsureAutostart) has been disabled due to
+		// concurrency issues with database access (e.g., when using `download`).
+		// To re-enable, uncomment the line below.
 
-		return err
+		/*
+			homeDir, err := os.UserHomeDir()
+			if err != nil {
+				return fmt.Errorf("failed to get home directory: %w", err)
+			}
+
+			if err := watcher.EnsureAutostart(homeDir); err != nil {
+				fmt.Fprintf(os.Stderr, "Warning: failed to install autostart for watcher: %v\n", err)
+			}
+		*/
+
+		return nil
 	},
 }
-
-func init() {
-	RootCmd.PersistentFlags().StringVar(&cfgPath, "config", "", "config file (default ~/.godeez/config.toml)")
-}

cmd/watch.go

@@ -0,0 +1,18 @@
+package cmd
+
+import (
+	"github.com/spf13/cobra"
+)
+
+var watchCmd = &cobra.Command{
+	Use:   "watch",
+	Short: "Watch playlists and auto-download new tracks",
+}
+
+// TEMPORARILY DISABLED:
+// The `watch` command and all its subcommands are currently disabled
+// due to known issues (e.g., database access conflicts with `download`).
+// To re-enable, uncomment the line below.
+func init() {
+	// RootCmd.AddCommand(watchCmd)
+}

cmd/watch_add.go

@@ -0,0 +1,49 @@
+package cmd
+
+import (
+	"fmt"
+	"strings"
+	"time"
+
+	"github.com/mathismqn/godeez/internal/store"
+	"github.com/spf13/cobra"
+)
+
+var watchAddCmd = &cobra.Command{
+	Use:   "add <playlist_id>",
+	Short: "Add a playlist to the watch list",
+	Args:  cobra.ExactArgs(1),
+	RunE: func(cmd *cobra.Command, args []string) error {
+		id := args[0]
+		ok, err := store.IsWatched(id)
+		if err != nil {
+			return err
+		}
+		if ok {
+			fmt.Printf("Playlist %s is already being watched\n", id)
+			return nil
+		}
+
+		playlist := &store.WatchedPlaylist{
+			ID:      id,
+			Quality: strings.ToLower(opts.Quality),
+			BPM:     opts.BPM,
+			Timeout: opts.Timeout,
+		}
+
+		if err := playlist.Save(); err != nil {
+			return fmt.Errorf("failed to add playlist %s to watch list: %w", id, err)
+		}
+		fmt.Printf("Playlist %s added to watch list\n", id)
+
+		return nil
+	},
+}
+
+func init() {
+	watchCmd.AddCommand(watchAddCmd)
+
+	watchAddCmd.Flags().StringVarP(&opts.Quality, "quality", "q", "mp3_320", "download quality [mp3_128, mp3_320, flac]")
+	watchAddCmd.Flags().DurationVarP(&opts.Timeout, "timeout", "t", 2*time.Minute, "timeout for each download (e.g. 10s, 1m, 2m30s)")
+	watchAddCmd.Flags().BoolVar(&opts.BPM, "bpm", false, "fetch BPM/key and add to file tags")
+}

cmd/watch_list.go

@@ -0,0 +1,41 @@
+package cmd
+
+import (
+	"fmt"
+	"os"
+	"text/tabwriter"
+
+	"github.com/mathismqn/godeez/internal/store"
+	"github.com/spf13/cobra"
+)
+
+var watchListCmd = &cobra.Command{
+	Use:   "list",
+	Short: "List watched playlists",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		playlists, err := store.ListWatchedPlaylists()
+		if err != nil {
+			return fmt.Errorf("failed to list watched playlists: %w", err)
+		}
+
+		if len(playlists) == 0 {
+			fmt.Println("No watched playlists.")
+			return nil
+		}
+
+		w := tabwriter.NewWriter(os.Stdout, 0, 0, 2, ' ', 0)
+		fmt.Fprintln(w, "ID\tQuality\tFetch BPM\tTimeout")
+		fmt.Fprintln(w, "---\t-------\t----------\t-------")
+
+		for _, playlist := range playlists {
+			fmt.Fprintf(w, "%s\t%s\t%t\t%s\n", playlist.ID, playlist.Quality, playlist.BPM, playlist.Timeout)
+		}
+		w.Flush()
+
+		return nil
+	},
+}
+
+func init() {
+	watchCmd.AddCommand(watchListCmd)
+}

cmd/watch_remove.go

@@ -0,0 +1,35 @@
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/mathismqn/godeez/internal/store"
+	"github.com/spf13/cobra"
+)
+
+var watchRemoveCmd = &cobra.Command{
+	Use:   "remove <playlist_id>",
+	Short: "Remove a playlist from the watch list",
+	Args:  cobra.ExactArgs(1),
+	RunE: func(cmd *cobra.Command, args []string) error {
+		id := args[0]
+		ok, err := store.IsWatched(id)
+		if err != nil {
+			return err
+		}
+		if !ok {
+			return fmt.Errorf("playlist %s is not being watched", id)
+		}
+
+		if err := store.RemoveWatchedPlaylist(id); err != nil {
+			return fmt.Errorf("failed to remove playlist %s from watch list: %w", id, err)
+		}
+		fmt.Printf("Playlist %s removed from watch list\n", id)
+
+		return nil
+	},
+}
+
+func init() {
+	watchCmd.AddCommand(watchRemoveCmd)
+}

cmd/watch_run.go

@@ -0,0 +1,34 @@
+package cmd
+
+import (
+	"context"
+
+	"github.com/mathismqn/godeez/internal/config"
+	"github.com/mathismqn/godeez/internal/watcher"
+	"github.com/spf13/cobra"
+)
+
+var watchRunCmd = &cobra.Command{
+	Use:    "run",
+	Short:  "Start the background playlist watcher",
+	Hidden: true,
+	PreRun: func(cmd *cobra.Command, args []string) {
+		appConfig, err := config.New("")
+		if err != nil {
+			return
+		}
+		cmd.SetContext(context.WithValue(cmd.Context(), "appConfig", appConfig))
+	},
+	Run: func(cmd *cobra.Command, args []string) {
+		ctx := cmd.Context()
+		appConfigVal := ctx.Value("appConfig")
+		appConfig, _ := appConfigVal.(*config.Config)
+
+		w := watcher.New(appConfig)
+		w.Run(ctx, opts)
+	},
+}
+
+func init() {
+	watchCmd.AddCommand(watchRunCmd)
+}

go.mod

@@ -1,49 +1,44 @@
 module github.com/mathismqn/godeez
 
-go 1.23.1
+go 1.24.0
+
+toolchain go1.24.4
 
 require (
-	github.com/spf13/cobra v1.8.1
-	github.com/spf13/viper v1.19.0
+	github.com/spf13/cobra v1.9.1
+	github.com/spf13/viper v1.20.1
 )
 
 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/andybalholm/cascadia v1.3.3 // indirect
+	github.com/fatih/color v1.18.0 // indirect
+	github.com/fsnotify/fsnotify v1.9.0 // indirect
+	github.com/go-viper/mapstructure/v2 v2.4.0 // indirect
+	github.com/mattn/go-colorable v0.1.14 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/pelletier/go-toml/v2 v2.2.4 // indirect
+	github.com/sagikazarmark/locafero v0.10.0 // indirect
+	github.com/sourcegraph/conc v0.3.1-0.20240121214520-5f936abd7ae8 // indirect
+	github.com/spf13/afero v1.14.0 // indirect
+	github.com/spf13/cast v1.9.2 // 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
+	golang.org/x/net v0.43.0 // indirect
+	golang.org/x/sys v0.35.0 // indirect
+	golang.org/x/term v0.34.0 // indirect
+	golang.org/x/text v0.28.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
 
 require (
-	github.com/PuerkitoBio/goquery v1.10.0
+	github.com/PuerkitoBio/goquery v1.10.3
 	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 v1.0.7 // indirect
+	go.etcd.io/bbolt v1.4.2
+	golang.org/x/crypto v0.41.0
 )

go.sum

@@ -1,148 +1,150 @@
-github.com/PuerkitoBio/goquery v1.10.0 h1:6fiXdLuUvYs2OJSvNRqlNPoBm6YABE226xrbavY5Wv4=
-github.com/PuerkitoBio/goquery v1.10.0/go.mod h1:TjZZl68Q3eGHNBA8CWaxAN7rOU1EbDz3CWuolcO5Yu4=
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 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
 golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
+golang.org/x/mod v0.12.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
+golang.org/x/mod v0.15.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
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 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
 golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
-golang.org/x/net v0.9.0/go.mod h1:d48xBJpPfHeWQsugry2m+kC02ZBRGRgulfHnEXEuWns=
-golang.org/x/net v0.29.0 h1:5ORfpBpCs4HzDYoodCDBbwHzdR5UrLBZ3sOnUJmFoHo=
-golang.org/x/net v0.29.0/go.mod h1:gLkgy8jTGERgjzMic6DS9+SP0ajcu6Xu3Orq/SpETg0=
+golang.org/x/net v0.10.0/go.mod h1:0qNGK6F8kojg2nk9dLZ2mShWaEBan6FAoqfSigmmuDg=
+golang.org/x/net v0.15.0/go.mod h1:idbUs1IY1+zTqbi8yxTbhexhEEk5ur9LInksu6HrEpk=
+golang.org/x/net v0.21.0/go.mod h1:bIjVDfnllIU7BJ2DNgfnXvpSvtn8VRwhlsaeUTyUS44=
+golang.org/x/net v0.25.0/go.mod h1:JkAGAh7GEvH74S6FOH42FLoXpXbE/aqXSrIQjXgsiwM=
+golang.org/x/net v0.33.0/go.mod h1:HXLR5J+9DxmrqMwG9qjGCxZ+zKXxBru04zlTvWlWuN4=
+golang.org/x/net v0.43.0 h1:lat02VYK2j4aLzMzecihNvTlJNQUq316m2Mr9rnM6YE=
+golang.org/x/net v0.43.0/go.mod h1:vhO1fvI4dGsIjh73sWfUVjj3N7CA9WkKJNQm2svM6Jg=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.10.0 h1:3NQrjDixjgGwUOCaF8w2+VYHv0Ve/vGYSbdkTa98gmQ=
+golang.org/x/sync v0.3.0/go.mod h1:FU7BRWz2tNW+3quACPkgCx/L+uEAv1htQ0V83Z9Rj+Y=
+golang.org/x/sync v0.6.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
+golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 golang.org/x/sync v0.10.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
+golang.org/x/sync v0.16.0 h1:ycBJEhp9p4vXvUZNszeOq0kGTPghopOL8q0fq3vstxw=
+golang.org/x/sync v0.16.0/go.mod h1:1dzgHSNfp02xaA81J2MS99Qcpr2w7fw1gpm99rleRqA=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 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 v0.35.0 h1:vz1N37gP5bs89s7He8XuIYXpyY0+QlsKmzipCbUtyxI=
+golang.org/x/sys v0.35.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
+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 v0.34.0 h1:O/2T7POpk0ZZ7MAzMeWFSg6S5IpWd/RXDlM9hgM3DR4=
+golang.org/x/term v0.34.0/go.mod h1:5jC53AEywhIVebHgPVeg0mj8OD3VO9OzclacVrqpaAw=
 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 v0.28.0 h1:rhazDwis8INMIwQ4tpjLDzUhx6RlXqZNPEM0huQojng=
+golang.org/x/text v0.28.0/go.mod h1:U8nCwOR8jO/marOQ0QbDiOngZVEBB7MAiitBuMjXiNU=
 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/config/config.go

@@ -15,6 +15,7 @@ type Config struct {
 	ArlCookie string `mapstructure:"arl_cookie"`
 	SecretKey string `mapstructure:"secret_key"`
 	OutputDir string `mapstructure:"output_dir"`
+	HomeDir   string
 }
 
 func New(cfgPath string) (*Config, error) {
@@ -49,11 +50,11 @@ func New(cfgPath string) (*Config, error) {
 		return nil, fmt.Errorf("failed to read config file: %w", err)
 	}
 
-	var cfg Config
-	if err := viper.Unmarshal(&cfg); err != nil {
+	cfg := &Config{HomeDir: homeDir}
+	if err := viper.Unmarshal(cfg); err != nil {
 		return nil, fmt.Errorf("failed to parse config: %w", err)
 	}
-	if err := cfg.Validate(homeDir); err != nil {
+	if err := cfg.Validate(); err != nil {
 		return nil, fmt.Errorf("invalid config: %w", err)
 	}
 
@@ -61,10 +62,10 @@ func New(cfgPath string) (*Config, error) {
 		return nil, err
 	}
 
-	return &cfg, nil
+	return cfg, nil
 }
 
-func (c *Config) Validate(homeDir string) error {
+func (c *Config) Validate() error {
 	if c.ArlCookie == "" {
 		return fmt.Errorf("arl_cookie is not set")
 	}
@@ -75,7 +76,7 @@ func (c *Config) Validate(homeDir string) error {
 		return fmt.Errorf("secret_key must be 16 bytes long")
 	}
 	if c.OutputDir == "" {
-		c.OutputDir = filepath.Join(homeDir, "Music", "GoDeez")
+		c.OutputDir = filepath.Join(c.HomeDir, "Music", "GoDeez")
 	}
 
 	return 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 {
@@ -59,6 +60,10 @@ 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{})

internal/deezer/artist.go

@@ -0,0 +1,82 @@
+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) 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.GetTitle(), filenamify.Options{})
+	return path.Join(outputDir, base)
+}
+
+func (a *Artist) Unmarshal(data []byte) error {
+	return json.Unmarshal(data, a)
+}
+
+func (a *Artist) String() string {
+	tracks := a.GetSongs()
+	count := len(tracks)
+
+	limit := 3
+	if count < limit {
+		limit = count
+	}
+
+	totalSec := 0
+	for _, s := range tracks {
+		if d, err := strconv.Atoi(s.Duration); err == nil {
+			totalSec += d
+		}
+	}
+	totalDuration := time.Duration(totalSec) * time.Second
+
+	var b strings.Builder
+	fmt.Fprintf(&b, "============= [ Artist Info ] =============\n")
+	fmt.Fprintf(&b, "Artist:   %s\n", a.GetTitle())
+	fmt.Fprintf(&b, "Tracks:   %d\n", count)
+	fmt.Fprintf(&b, "Playtime: %s\n", totalDuration)
+	fmt.Fprintf(&b, "-------------------------------------------\n")
+	fmt.Fprintf(&b, "Top %d most popular tracks:\n", limit)
+	for i := 0; i < limit; i++ {
+		s := tracks[i]
+		title := s.GetTitle()
+		fmt.Fprintf(&b, "    %2d. %s – %s\n", i+1, s.Artist, title)
+	}
+	fmt.Fprintf(&b, "===========================================\n")
+
+	return b.String()
+}

internal/deezer/client.go

@@ -29,23 +29,34 @@ 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,
 	}
+	switch r := resource.(type) {
+	case *Playlist:
+		payload["playlist_id"] = id
+	case *Album:
+		payload["alb_id"] = id
+	case *Artist:
+		payload["art_id"] = id
+	case *Track:
+		payload["sng_id"] = id
+	default:
+		return fmt.Errorf("unsupported resource type: %T", r)
+	}
+
 	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
@@ -66,17 +77,22 @@ func (c *Client) FetchResource(ctx context.Context, ressource Resource, id strin
 		return err
 	}
 
-	if strings.Contains(string(body), `"DATA_ERROR":"playlist::getData"`) {
+	switch {
+	case strings.Contains(string(body), `"DATA_ERROR":"playlist::getData"`):
 		return fmt.Errorf("invalid playlist ID")
-	}
-	if strings.Contains(string(body), `"DATA_ERROR":"album::getData"`) {
+	case strings.Contains(string(body), `"DATA_ERROR":"album::getData"`):
 		return fmt.Errorf("invalid album ID")
+	case strings.Contains(string(body), `"DATA_ERROR":"artist::getData"`):
+		return fmt.Errorf("invalid artist ID")
+	case strings.Contains(string(body), `"DATA_ERROR":"song::getData"`):
+		return fmt.Errorf("invalid track ID")
 	}
+
 	if strings.Contains(string(body), `"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) {
@@ -86,10 +102,8 @@ func (c *Client) FetchMedia(ctx context.Context, song *Song, quality string) (*M
 	case "mp3_128":
 		formats = `[{"cipher":"BF_CBC_STRIPE","format":"MP3_128"}]`
 	case "mp3_320":
-		formats = `[{"cipher":"BF_CBC_STRIPE","format":"MP3_320"}]`
+		formats = `[{"cipher":"BF_CBC_STRIPE","format":"MP3_320"},{"cipher":"BF_CBC_STRIPE","format":"MP3_128"}]`
 	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"}]`
 	}
 
@@ -127,6 +141,7 @@ func (c *Client) FetchMedia(ctx context.Context, song *Song, quality string) (*M
 
 		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")
@@ -135,6 +150,10 @@ func (c *Client) FetchMedia(ctx context.Context, song *Song, quality string) (*M
 		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
 }
 
@@ -159,11 +178,7 @@ func (c *Client) FetchCoverImage(ctx context.Context, song *Song) ([]byte, error
 }
 
 func (c *Client) GetMediaStream(ctx context.Context, media *Media, songID string) (io.ReadCloser, error) {
-	url, err := media.GetURL()
-	if err != nil {
-		return nil, err
-	}
-
+	url := media.GetURL()
 	req, err := http.NewRequestWithContext(ctx, "GET", url, nil)
 	if err != nil {
 		return nil, err

internal/deezer/media.go

@@ -1,9 +1,5 @@
 package deezer
 
-import (
-	"fmt"
-)
-
 type Media struct {
 	Errors []MediaError `json:"errors"`
 	Data   []struct {
@@ -31,26 +27,10 @@ type Source struct {
 	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) GetURL() string {
+	return m.Data[0].Media[0].Sources[0].URL
 }
 
-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

@@ -50,6 +50,10 @@ func (p *Playlist) GetSongs() []*Song {
 	return p.Results.Songs.Data
 }
 
+func (p *Playlist) SetSongs(s []*Song) {
+	p.Results.Songs.Data = s
+}
+
 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)

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/song.go

@@ -1,27 +1,42 @@
 package deezer
 
 import (
+	"encoding/json"
 	"fmt"
 
 	"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 {
@@ -33,9 +48,9 @@ func (s *Song) GetTitle() string {
 	return songTitle
 }
 
-func (s *Song) GetFileName(resourceType string, song *Song, media *Media) string {
+func (s *Song) GetFileName(resourceType, mediaFormat string, song *Song) string {
 	ext := "mp3"
-	if media.Data[0].Media[0].Format == "FLAC" {
+	if mediaFormat == "FLAC" {
 		ext = "flac"
 	}
 	trackNumber := ""
@@ -44,7 +59,7 @@ func (s *Song) GetFileName(resourceType string, song *Song, media *Media) string
 	}
 
 	fileName := fmt.Sprintf("%s%s - %s.%s", trackNumber, s.Artist, s.GetTitle(), ext)
-	fileName, _ = filenamify.Filenamify(fileName, filenamify.Options{})
+	fileName, _ = filenamify.Filenamify(fileName, filenamify.Options{MaxLength: 255})
 
 	return fileName
 }

internal/deezer/track.go

@@ -0,0 +1,77 @@
+package deezer
+
+import (
+	"encoding/json"
+	"fmt"
+	"path"
+	"time"
+
+	"github.com/flytam/filenamify"
+)
+
+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 := "Unknown"
+	if t.Results.Data.Duration != "" {
+		if d, err := time.ParseDuration(t.Results.Data.Duration + "s"); err == nil {
+			duration = d.String()
+		}
+	}
+
+	return fmt.Sprintf(
+		`================= [ Track Info ] =================
+Title:    %s
+Artist:   %s
+Duration: %s
+==================================================`,
+		t.Results.Data.GetTitle(),
+		t.Results.Data.Artist,
+		duration,
+	)
+}
+
+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 []*Song{}
+	}
+	return []*Song{t.Results.Data}
+}
+
+func (t *Track) SetSongs(songs []*Song) {}
+
+func (t *Track) GetOutputDir(outputDir string) string {
+	if t.Results.Data == nil {
+		return outputDir
+	}
+
+	// For single tracks, create a simple "Singles" folder
+	base := "Singles"
+	base, _ = filenamify.Filenamify(base, filenamify.Options{})
+	outputDir = path.Join(outputDir, base)
+
+	return outputDir
+}
+
+func (t *Track) Unmarshal(data []byte) error {
+	return json.Unmarshal(data, t)
+}

internal/downloader/client.go

@@ -7,15 +7,16 @@ 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/provider"
 	"github.com/mathismqn/godeez/internal/store"
 	"github.com/mathismqn/godeez/internal/tags"
 )
@@ -26,6 +27,7 @@ type Client struct {
 	appConfig    *config.Config
 	resourceType string
 	deezerClient *deezer.Client
+	Logger       *logger.Logger
 
 	hashIndexOnce sync.Once
 	hashIndex     *fileutil.HashIndex
@@ -37,10 +39,24 @@ func New(appConfig *config.Config, resourceType string) *Client {
 		appConfig:    appConfig,
 		resourceType: resourceType,
 		deezerClient: nil,
+		Logger:       logger.New(nil), // Initialize with a nil logger, can be set later
 	}
 }
 
 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 {
@@ -48,164 +64,131 @@ func (c *Client) Run(ctx context.Context, opts Options, id string) error {
 	}
 
 	if !c.deezerClient.Session.Premium && (opts.Quality == "mp3_320" || opts.Quality == "flac") {
-		return fmt.Errorf("premium account required for %s quality", opts.Quality)
+		return fmt.Errorf("premium account required for '%s' quality", opts.Quality)
 	}
 
-	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)
+	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 c.resourceType == "artist" && len(songs) > opts.Limit {
+		songs = songs[:opts.Limit]
+		resource.SetSongs(songs)
+	}
+
+	resourceOutputDir := resource.GetOutputDir(c.appConfig.OutputDir)
 	if err := fileutil.EnsureDir(resourceOutputDir); err != nil {
-		return fmt.Errorf("failed to create output directory: %w", err)
+		return nil, "", fmt.Errorf("failed to create output directory: %w", err)
 	}
 
-	startTime := time.Now()
-	fmt.Printf("%s\n\nStarting download...\n\n", resource)
+	return resource, resourceOutputDir, nil
+}
 
-	downloaded := 0
-	skipped := 0
-	failed := 0
+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()
+
+	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 result.err != nil {
+			if errors.Is(result.err, context.Canceled) {
+				return result.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
 		}
 
-		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) {
+func (c *Client) downloadSong(ctx context.Context, resource deezer.Resource, song *deezer.Song, opts Options, outputDir string) downloadResult {
 	var warnings []string
 
 	media, err := c.deezerClient.FetchMedia(ctx, song, opts.Quality)
 	if err != nil {
-		return warnings, fmt.Errorf("failed to fetch media: %w", err)
+		return handleError(fmt.Errorf("failed to fetch media: %w", err))
 	}
 
-	fileName := song.GetFileName(c.resourceType, song, media)
-	outputPath := path.Join(outputDir, fileName)
-
-	mediaFormat, err := media.GetFormat()
-	if err != nil {
-		return warnings, fmt.Errorf("failed to get media format: %w", err)
+	mediaFormat := media.GetFormat()
+	if opts.Strict && strings.ToLower(mediaFormat) != opts.Quality {
+		return handleError(fmt.Errorf("requested quality '%s' not available", opts.Quality))
 	}
 
 	if path, skip := c.shouldSkipDownload(ctx, song.ID, mediaFormat); skip {
-		return warnings, SkipError{Path: path}
+		return handleError(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
-		}()
-	}
+	metadataFetcher := newMetadataFetcher(c.deezerClient.Session.HttpClient)
+	metadataResult := metadataFetcher.fetch(ctx, song, opts)
+	warnings = append(warnings, metadataResult.warnings...)
 
 	stream, err := c.deezerClient.GetMediaStream(ctx, media, song.ID)
 	if err != nil {
-		return warnings, fmt.Errorf("failed to get media stream: %w", err)
+		return handleError(fmt.Errorf("failed to get media stream: %w", err))
 	}
 
 	dlCtx, cancel := context.WithTimeout(ctx, opts.Timeout)
 	defer cancel()
 
+	fileName := song.GetFileName(c.resourceType, mediaFormat, song)
+	outputPath := path.Join(outputDir, fileName)
+
 	key := crypto.GetKey(c.appConfig.SecretKey, 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 handleError(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))
-			}
-		}
+	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)
@@ -213,9 +196,13 @@ 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)...)
+	finalizeWarnings := c.finalizeDownload(resource, song, outputPath, mediaFormat, metadataResult.genre, cover, metadataResult.bpmKey)
+	warnings = append(warnings, finalizeWarnings...)
 
-	return warnings, nil
+	return downloadResult{
+		success:  true,
+		warnings: warnings,
+	}
 }
 
 func (c *Client) streamToFile(ctx context.Context, stream io.ReadCloser, outputPath string, key []byte) error {
@@ -275,10 +262,10 @@ 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 provider.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/errors.go

@@ -0,0 +1,15 @@
+package downloader
+
+func handleError(err error) downloadResult {
+	if path, ok := IsSkipError(err); ok {
+		return downloadResult{
+			skipped: true,
+			path:    path,
+		}
+	}
+
+	return downloadResult{
+		success: false,
+		err:     err,
+	}
+}

internal/downloader/metadata.go

@@ -0,0 +1,92 @@
+package downloader
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"net/http"
+
+	"github.com/mathismqn/godeez/internal/deezer"
+	"github.com/mathismqn/godeez/internal/provider"
+)
+
+type metadataResult struct {
+	bpmKey   provider.BPMKey
+	genre    string
+	warnings []string
+}
+
+type metadataFetcher struct {
+	httpClient *http.Client
+}
+
+func newMetadataFetcher(httpClient *http.Client) *metadataFetcher {
+	return &metadataFetcher{
+		httpClient: httpClient,
+	}
+}
+
+func (mf *metadataFetcher) fetch(ctx context.Context, song *deezer.Song, opts Options) metadataResult {
+	result := metadataResult{
+		bpmKey:   provider.BPMKey{},
+		genre:    "",
+		warnings: []string{},
+	}
+
+	if !opts.BPM && !opts.Genre {
+		return result
+	}
+
+	bmpChan := make(chan provider.BPMKey, 1)
+	bmpErrChan := make(chan error, 1)
+	genreChan := make(chan string, 1)
+	genreErrChan := make(chan error, 1)
+
+	if opts.BPM {
+		go func() {
+			p := provider.BPMProvider{}
+			bmpKey, err := p.Fetch(ctx, mf.httpClient, song.Artist, song.Title, song.Duration)
+			if err != nil {
+				bmpErrChan <- err
+			} else {
+				bmpChan <- bmpKey
+			}
+		}()
+	}
+
+	if opts.Genre {
+		go func() {
+			p := provider.GenreProvider{}
+			genre, err := p.Fetch(ctx, mf.httpClient, song.Artist, song.GetTitle())
+			if err != nil {
+				genreErrChan <- err
+			} else {
+				genreChan <- genre
+			}
+		}()
+	}
+
+	if opts.BPM {
+		select {
+		case bmpKey := <-bmpChan:
+			result.bpmKey = bmpKey
+		case err := <-bmpErrChan:
+			if !errors.Is(err, context.Canceled) {
+				result.warnings = append(result.warnings, fmt.Sprintf("failed to fetch BPM and key: %v", err))
+			}
+		}
+	}
+
+	if opts.Genre {
+		select {
+		case genre := <-genreChan:
+			result.genre = genre
+		case err := <-genreErrChan:
+			if !errors.Is(err, context.Canceled) {
+				result.warnings = append(result.warnings, fmt.Sprintf("failed to fetch genre: %v", err))
+			}
+		}
+	}
+
+	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 +1,124 @@
+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 downloadStats struct {
+	downloaded int
+	skipped    int
+	failed     int
+}
+
+type downloadResult struct {
+	success  bool
+	skipped  bool
+	path     string
+	warnings []string
+	err      error
+}
+
+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,
+		stats:        &downloadStats{},
+		totalSongs:   totalSongs,
+		resourceType: resourceType,
+	}
+}
+
+func (pt *progressTracker) startDownload(index int, song *deezer.Song) *spinner.Spinner {
+	songTitle := song.GetTitle()
+	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, songTitle)
+	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
+	}
+
+	symbol := "✔"
+	if len(result.warnings) > 0 {
+		symbol = "⚠"
+	}
+
+	pt.stats.downloaded++
+	pt.logger.Infof("Downloaded %s - %s\n", song.Artist, songTitle)
+	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" {
+		fmt.Printf(`
+================== [ Summary ] ==================
+Downloaded:     %d
+Skipped:        %d
+Failed:         %d
+Elapsed time:   %s
+Files saved to: %s
+=================================================
+`,
+			pt.stats.downloaded,
+			pt.stats.skipped,
+			pt.stats.failed,
+			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/logger/logger.go

@@ -0,0 +1,29 @@
+package logger
+
+import "log"
+
+type Logger struct {
+	l *log.Logger
+}
+
+func New(l *log.Logger) *Logger {
+	return &Logger{l: l}
+}
+
+func (l *Logger) Infof(format string, args ...any) {
+	if l.l != nil {
+		l.l.Printf("[INFO] "+format, args...)
+	}
+}
+
+func (l *Logger) Warnf(format string, args ...any) {
+	if l.l != nil {
+		l.l.Printf("[WARN] "+format, args...)
+	}
+}
+
+func (l *Logger) Errorf(format string, args ...any) {
+	if l.l != nil {
+		l.l.Printf("[ERROR] "+format, args...)
+	}
+}

internal/provider/bpm.go

@@ -1,4 +1,4 @@
-package bpm
+package provider
 
 import (
 	"bytes"
@@ -6,7 +6,7 @@ import (
 	"fmt"
 	"io"
 	"net/http"
-	"net/url"
+	neturl "net/url"
 	"regexp"
 	"strconv"
 	"strings"
@@ -14,30 +14,32 @@ import (
 	"github.com/PuerkitoBio/goquery"
 )
 
-type Metrics struct {
+type BPMProvider struct{}
+
+type BPMKey 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)
+func (p BPMProvider) Fetch(ctx context.Context, httpClient *http.Client, artist, title, duration string) (BPMKey, error) {
+	url, err := p.findSongURL(ctx, httpClient, artist, title, duration)
 	if err != nil {
-		return nil, err
+		return BPMKey{}, err
 	}
 
-	html, err := fetchPage(ctx, httpClient, url)
+	html, err := p.fetchPage(ctx, httpClient, url)
 	if err != nil {
-		return nil, err
+		return BPMKey{}, err
 	}
 
-	return parseMetrics(html)
+	return p.parse(html)
 }
 
-func findSongURL(ctx context.Context, httpClient *http.Client, artist, title, duration string) (string, error) {
+func (p BPMProvider) findSongURL(ctx context.Context, httpClient *http.Client, artist, title, duration string) (string, error) {
 	rootUrl := "https://songbpm.com"
 	reqUrl := rootUrl + "/searches"
 
-	values := url.Values{}
+	values := neturl.Values{}
 	values.Add("query", fmt.Sprintf("%s %s", artist, title))
 
 	req, err := http.NewRequestWithContext(ctx, "POST", reqUrl, bytes.NewBufferString(values.Encode()))
@@ -90,12 +92,13 @@ func findSongURL(ctx context.Context, httpClient *http.Client, artist, title, du
 		}
 
 		foundDuration := minutes*60 + seconds
-		duration, err := strconv.Atoi(duration)
+		wantDuration, err := strconv.Atoi(duration)
 		if err != nil {
 			return true
 		}
 
-		if foundDuration <= (duration-2) || foundDuration >= (duration+2) {
+		const durationToleranceSec = 2
+		if foundDuration <= (wantDuration-durationToleranceSec) || foundDuration >= (wantDuration+durationToleranceSec) {
 			return true
 		}
 
@@ -112,7 +115,7 @@ func findSongURL(ctx context.Context, httpClient *http.Client, artist, title, du
 	return rootUrl + url, nil
 }
 
-func fetchPage(ctx context.Context, httpClient *http.Client, url string) (string, error) {
+func (p BPMProvider) fetchPage(ctx context.Context, httpClient *http.Client, url string) (string, error) {
 	req, err := http.NewRequestWithContext(ctx, "GET", url, nil)
 	if err != nil {
 		return "", err
@@ -136,7 +139,7 @@ func fetchPage(ctx context.Context, httpClient *http.Client, url string) (string
 	return string(body), nil
 }
 
-func parseMetrics(html string) (*Metrics, error) {
+func (p BPMProvider) parse(html string) (BPMKey, error) {
 	bpmRegex := regexp.MustCompile(`tempo of <span[^>]*>(\d+) BPM`)
 	bpmMatch := bpmRegex.FindStringSubmatch(html)
 
@@ -147,7 +150,7 @@ func parseMetrics(html string) (*Metrics, error) {
 	modeMatch := modeRegex.FindStringSubmatch(html)
 
 	if len(bpmMatch) != 2 || len(keyMatch) != 2 || len(modeMatch) != 2 {
-		return nil, fmt.Errorf("no data found")
+		return BPMKey{}, fmt.Errorf("no data found")
 	}
 
 	isMinor := false
@@ -169,8 +172,9 @@ func parseMetrics(html string) (*Metrics, error) {
 		key += "m"
 	}
 
-	return &Metrics{
+	return BPMKey{
 		BPM: bpm,
 		Key: key,
 	}, nil
+
 }

internal/provider/genre.go

@@ -0,0 +1,86 @@
+package provider
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+	"strings"
+
+	"github.com/PuerkitoBio/goquery"
+)
+
+type GenreProvider struct{}
+
+func (p GenreProvider) Fetch(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 := p.fetchPage(ctx, httpClient, reqUrl)
+	if err != nil {
+		return "", err
+	}
+
+	tags := p.parse(doc)
+	if len(tags) == 0 {
+		return "", fmt.Errorf("no data found")
+	}
+
+	if len(tags) > 1 {
+		tags = tags[:2]
+	}
+	genre := p.formatTags(tags)
+
+	return genre, nil
+}
+
+func (p GenreProvider) fetchPage(ctx context.Context, httpClient *http.Client, reqUrl string) (*goquery.Document, error) {
+	req, err := http.NewRequestWithContext(ctx, "GET", reqUrl, 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)
+	}
+
+	doc, err := goquery.NewDocumentFromReader(resp.Body)
+	if err != nil {
+		return nil, err
+	}
+
+	return doc, nil
+}
+
+func (p GenreProvider) parse(doc *goquery.Document) []string {
+	var tags []string
+	doc.Find("ol.big-tags .big-tags-item-name a").Each(func(_ int, s *goquery.Selection) {
+		tag := strings.TrimSpace(s.Text())
+		if tag != "" {
+			tags = append(tags, tag)
+		}
+	})
+
+	return tags
+}
+
+func (p GenreProvider) formatTags(tags []string) string {
+	var formatted []string
+	for _, tag := range tags {
+		tag = strings.TrimSpace(tag)
+		if tag == "" {
+			continue
+		}
+
+		words := strings.Fields(tag)
+		for i, w := range words {
+			words[i] = strings.Title(w)
+		}
+		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

@@ -7,10 +7,7 @@ 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
@@ -21,12 +18,5 @@ func OpenDB(cfgDir string) error {
 		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/store/watched.go

@@ -0,0 +1,84 @@
+package store
+
+import (
+	"encoding/json"
+	"fmt"
+	"time"
+
+	bolt "go.etcd.io/bbolt"
+)
+
+type WatchedPlaylist struct {
+	ID      string        `json:"id"`
+	Quality string        `json:"quality"`
+	BPM     bool          `json:"bpm"`
+	Timeout time.Duration `json:"timeout"`
+}
+
+var watchedBucket = []byte("watched")
+
+func ListWatchedPlaylists() ([]*WatchedPlaylist, error) {
+	var playlists []*WatchedPlaylist
+	if err := db.View(func(tx *bolt.Tx) error {
+		b := tx.Bucket(watchedBucket)
+		if b == nil {
+			return nil
+		}
+
+		return b.ForEach(func(k, v []byte) error {
+			var p WatchedPlaylist
+			if err := json.Unmarshal(v, &p); err != nil {
+				return err
+			}
+			playlists = append(playlists, &p)
+
+			return nil
+		})
+	}); err != nil {
+		return nil, err
+	}
+
+	return playlists, nil
+}
+
+func (p *WatchedPlaylist) Save() error {
+	return db.Update(func(tx *bolt.Tx) error {
+		b, err := tx.CreateBucketIfNotExists(watchedBucket)
+		if err != nil {
+			return err
+		}
+
+		data, err := json.Marshal(p)
+		if err != nil {
+			return err
+		}
+
+		return b.Put([]byte(p.ID), data)
+	})
+}
+
+func RemoveWatchedPlaylist(playlistID string) error {
+	return db.Update(func(tx *bolt.Tx) error {
+		b := tx.Bucket(watchedBucket)
+		if b == nil {
+			return fmt.Errorf("bucket not found")
+		}
+
+		return b.Delete([]byte(playlistID))
+	})
+}
+
+func IsWatched(playlistID string) (bool, error) {
+	var found bool
+	err := db.View(func(tx *bolt.Tx) error {
+		b := tx.Bucket(watchedBucket)
+		if b == nil {
+			return nil
+		}
+		found = b.Get([]byte(playlistID)) != nil
+
+		return nil
+	})
+
+	return found, err
+}

internal/tags/flac.go

@@ -16,26 +16,28 @@ 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]
 		}
 
-		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)
 

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)
@@ -23,19 +23,21 @@ 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)

internal/tags/tags.go

@@ -10,7 +10,7 @@ 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, path, tempo, key, genre string) error
 }
 
 func newTagger(filePath string) (tagger, error) {
@@ -39,11 +39,11 @@ func newTagger(filePath string) (tagger, error) {
 	return &flacTagger{file: file, cmts: cmts, index: idx}, nil
 }
 
-func AddTags(resource deezer.Resource, song *deezer.Song, cover []byte, filePath, tempo, key string) error {
+func AddTags(resource deezer.Resource, song *deezer.Song, cover []byte, filePath, tempo, key, genre string) error {
 	tagger, err := newTagger(filePath)
 	if err != nil {
 		return err
 	}
 
-	return tagger.addTags(resource, song, cover, filePath, tempo, key)
+	return tagger.addTags(resource, song, cover, filePath, tempo, key, genre)
 }

internal/watcher/autostart.go

@@ -0,0 +1,39 @@
+package watcher
+
+import (
+	"os"
+	"path/filepath"
+	"runtime"
+	"strings"
+)
+
+func EnsureAutostart(homeDir string) error {
+	if isAutostartInstalled(homeDir) || isTemporaryExecutable() {
+		return nil
+	}
+
+	// return installAutostart(homeDir)
+
+	return nil
+}
+
+func isAutostartInstalled(homeDir string) bool {
+	switch runtime.GOOS {
+	case "darwin":
+		path := filepath.Join(homeDir, "Library", "LaunchAgents", "com.godeez.watch.plist")
+		_, err := os.Stat(path)
+
+		return err == nil
+	default:
+		return false
+	}
+}
+
+func isTemporaryExecutable() bool {
+	exe, err := os.Executable()
+	if err != nil {
+		return true
+	}
+
+	return strings.Contains(exe, "go-build")
+}

internal/watcher/install_mac.go

@@ -0,0 +1,48 @@
+//go:build darwin
+
+package watcher
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+)
+
+func installAutostart(homeDir string) error {
+	exe, err := os.Executable()
+	if err != nil {
+		return err
+	}
+	exe, err = filepath.EvalSymlinks(exe)
+	if err != nil {
+		return err
+	}
+
+	plist := fmt.Sprintf(`<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN"
+ "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>Label</key>
+  <string>com.godeez.watch</string>
+  <key>ProgramArguments</key>
+  <array>
+    <string>%s</string>
+    <string>watch</string>
+    <string>run</string>
+  </array>
+  <key>RunAtLoad</key>
+  <true/>
+  <key>KeepAlive</key>
+  <true/>
+</dict>
+</plist>`, exe)
+
+	path := filepath.Join(homeDir, "Library", "LaunchAgents", "com.godeez.watch.plist")
+	if err := os.WriteFile(path, []byte(plist), 0644); err != nil {
+		return err
+	}
+
+	return exec.Command("launchctl", "load", path).Run()
+}

internal/watcher/watcher.go

@@ -0,0 +1,71 @@
+package watcher
+
+import (
+	"context"
+	"errors"
+	"log"
+	"os"
+	"path/filepath"
+	"time"
+
+	"github.com/mathismqn/godeez/internal/config"
+	"github.com/mathismqn/godeez/internal/downloader"
+	"github.com/mathismqn/godeez/internal/logger"
+	"github.com/mathismqn/godeez/internal/store"
+)
+
+type Watcher struct {
+	appConfig *config.Config
+	logger    *logger.Logger
+}
+
+func New(appConfig *config.Config) *Watcher {
+	logFile := filepath.Join(appConfig.HomeDir, ".godeez", "watcher.log")
+	file, err := os.OpenFile(logFile, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0644)
+	if err != nil {
+		log.Fatalf("Failed to open log file: %v\n", err)
+	}
+
+	base := log.New(file, "", log.LstdFlags)
+	log := logger.New(base)
+
+	return &Watcher{
+		appConfig: appConfig,
+		logger:    log,
+	}
+}
+
+func (w *Watcher) Run(ctx context.Context, opts downloader.Options) {
+	w.logger.Infof("Starting watcher...")
+
+	for {
+		select {
+		case <-ctx.Done():
+			return
+		default:
+			playlists, err := store.ListWatchedPlaylists()
+			if err != nil {
+				w.logger.Errorf("Failed to list watched playlists: %v\n", err)
+			} else {
+				for _, playlist := range playlists {
+					dl := downloader.New(w.appConfig, "playlist")
+					dl.Logger = w.logger
+					if err := dl.Run(ctx, opts, playlist.ID); err != nil {
+						if errors.Is(err, context.Canceled) {
+							return
+						}
+
+						w.logger.Errorf("Playlist %s: %v\n", playlist.ID, err)
+					}
+				}
+			}
+
+			select {
+			case <-ctx.Done():
+				return
+			case <-time.After(15 * time.Minute):
+				// Continue to the next iteration to check for updates
+			}
+		}
+	}
+}