refactor: use methods instead of functions

internal/deezer/album.go

@@ -0,0 +1,52 @@
+package deezer
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"regexp"
+)
+
+type Album struct {
+	Data struct {
+		ID          string `json:"ALB_ID"`
+		Name        string `json:"ALB_TITLE"`
+		ArtistID    string `json:"ART_ID"`
+		ArtistName  string `json:"ART_NAME"`
+		CoverID     string `json:"ALB_PICTURE"`
+		ReleaseData string `json:"PHYSICAL_RELEASE_DATE"`
+	} `json:"DATA"`
+	Songs struct {
+		Data []Song `json:"data"`
+	} `json:"SONGS"`
+}
+
+func GetAlbumData(id string) (*Album, error) {
+	url := fmt.Sprintf("https://www.deezer.com/en/album/%s", id)
+
+	resp, err := http.Get(url)
+	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)
+	}
+
+	body, _ := io.ReadAll(resp.Body)
+	re := regexp.MustCompile(`window\.__DZR_APP_STATE__ = (\{.*\})`)
+	matches := re.FindStringSubmatch(string(body))
+	if len(matches) != 2 {
+		return nil, fmt.Errorf("error parsing response")
+	}
+
+	var album Album
+	err = json.Unmarshal([]byte(matches[1]), &album)
+	if err != nil {
+		return nil, err
+	}
+
+	return &album, nil
+}