package music

import (
	"arimelody.me/arimelody.me/music/model"
	"github.com/jmoiron/sqlx"
)

// DATABASE

func PullAllTracks(db *sqlx.DB) ([]*model.Track, error) {
    var tracks = []*model.Track{}

	err := db.Select(&tracks, "SELECT id, title, description, lyrics, preview_url FROM musictrack")
	if err != nil {
        return nil, err
	}

    return tracks, nil
}

func PullOrphanTracks(db *sqlx.DB) ([]*model.Track, error) {
    var tracks = []*model.Track{}

	err := db.Select(&tracks,
        "SELECT id, title, description, lyrics, preview_url FROM musictrack "+
        "WHERE id NOT IN "+
        "(SELECT track FROM musicreleasetrack)",
    )
	if err != nil {
        return nil, err
	}

    return tracks, nil
}

func CreateTrackDB(db *sqlx.DB, track *model.Track) (string, error) {
    var trackID string
    err := db.QueryRow(
        "INSERT INTO musictrack (title, description, lyrics, preview_url) "+
        "VALUES ($1, $2, $3, $4) "+
        "RETURNING id",
        track.Title,
        track.Description,
        track.Lyrics,
        track.PreviewURL,
    ).Scan(&trackID)
    if err != nil {
        return "", err
    }

    return trackID, nil
}

func UpdateTrackDB(db *sqlx.DB, track *model.Track) error {
    _, err := db.Exec(
        "UPDATE musictrack "+
        "SET title=$2, description=$3, lyrics=$4, preview_url=$5 "+
        "WHERE id=$1"+
        "RETURNING id",
        track.ID,
        track.Title,
        track.Description,
        track.Lyrics,
        track.PreviewURL,
    )
    if err != nil {
        return err
    }

    return nil
}

func DeleteTrackDB(db *sqlx.DB, track *model.Track) error {
    _, err := db.Exec(
        "DELETE FROM musictrack "+
        "WHERE id=$1",
        track.ID,
    )
    if err != nil {
        return err
    }

    return nil
}