package models

import (
	"os"
	"strconv"
	"velvettear/badger/internal/config"
	"velvettear/badger/internal/tools"

	"gorm.io/gorm"
)

// exported function(s)
func (track *Track) HasChanged() (bool, error) {
	if config.ChangeDetectionChecksum() {
		checksum, error := tools.XxHash(track.Path)
		if error != nil {
			return true, error
		}
		if track.Checksum != strconv.FormatUint(checksum, 10) {
			return true, nil
		}
	}
	if !config.ChangeDetectionModified() && config.ChangeDetectionSize() {
		return false, nil
	}
	stats, error := os.Stat(track.Path)
	if error != nil {
		return true, error
	}
	if config.ChangeDetectionModified() {
		if track.Modified != stats.ModTime().UnixMilli() {
			return true, nil
		}
	}
	if config.ChangeDetectionSize() {
		if track.Size != stats.Size() {
			return true, nil
		}
	}
	return false, nil
}

// struct(s)
type Track struct {
	gorm.Model
	ID          int
	Path        string
	Title       string
	Date        string
	TrackNo     string
	DiscNo      string
	Duration    string
	Bitrate     int
	Fingerprint string
	Checksum    string
	Modified    int64
	Size        int64
	ArtistID    int
	AlbumID     int
}