package ripsort

import (
	"fmt"
	"os"
	"strings"

	"github.com/dhowden/tag"
)

type metadata struct {
	Format      tag.Format
	FileType    tag.FileType
	Title       string
	Artist      []string
	Album       string
	AlbumArtist []string
	Composer    []string
	Genre       string
	Year        int
	Track       int
	TotalTracks int
	Disc        int
	TotalDiscs  int
	Lyrics      string
	Comment     string
	HasPicture  bool
}

func ReadAudioTags(filePath string) (*metadata, error) {
	f, err := os.Open(filePath)
	if err != nil {
		return nil, fmt.Errorf("failed to open file: %w", err)
	}
	defer f.Close()

	m, err := tag.ReadFrom(f)
	if err != nil {
		return nil, fmt.Errorf("failed to read tags: %w", err)
	}

	track, totalTracks := m.Track()
	disc, totalDiscs := m.Disc()

	info := &metadata{
		Format:      m.Format(),
		FileType:    m.FileType(),
		Title:       m.Title(),
		Artist:      strings.Split(m.Artist(), ";"),
		Album:       m.Album(),
		AlbumArtist: strings.Split(m.AlbumArtist(), ";"),
		Composer:    strings.Split(m.Composer(), ";"),
		Genre:       m.Genre(),
		Year:        m.Year(),
		Track:       track,
		TotalTracks: totalTracks,
		Disc:        disc,
		TotalDiscs:  totalDiscs,
		Lyrics:      m.Lyrics(),
		Comment:     m.Comment(),
		HasPicture:  m.Picture() != nil,
	}

	return info, nil
}