export type SpotiRipSettings = {
  filenameTemplate: string;
  folderTemplate: string;
  multiDiscMode: "disc-prefix" | "offset" | "track-only";
  mp3Bitrate: 128 | 192 | 256 | 320;
  embedArtwork: boolean;
  autoSelectMatches: boolean;
  smartDedup: boolean;
};

export const DEFAULT_SPOTIRIP_SETTINGS: SpotiRipSettings = {
  filenameTemplate: "{artist} - {title}",
  folderTemplate: "{album_artist}/{year} - {album}",
  multiDiscMode: "disc-prefix",
  mp3Bitrate: 192,
  embedArtwork: true,
  autoSelectMatches: true,
  smartDedup: true,
};

const STORAGE_KEY = "aurora-spotirip-settings-v1";

export function loadSpotiRipSettings(): SpotiRipSettings {
  if (typeof window === "undefined") return DEFAULT_SPOTIRIP_SETTINGS;
  try {
    const stored = window.localStorage.getItem(STORAGE_KEY);
    if (!stored) return DEFAULT_SPOTIRIP_SETTINGS;
    const parsed = JSON.parse(stored) as Partial<SpotiRipSettings>;
    return {
      filenameTemplate:
        typeof parsed.filenameTemplate === "string" && parsed.filenameTemplate.trim()
          ? parsed.filenameTemplate
          : DEFAULT_SPOTIRIP_SETTINGS.filenameTemplate,
      folderTemplate:
        typeof parsed.folderTemplate === "string" && parsed.folderTemplate.trim()
          ? parsed.folderTemplate
          : DEFAULT_SPOTIRIP_SETTINGS.folderTemplate,
      multiDiscMode:
        parsed.multiDiscMode === "disc-prefix" ||
        parsed.multiDiscMode === "offset" ||
        parsed.multiDiscMode === "track-only"
          ? parsed.multiDiscMode
          : DEFAULT_SPOTIRIP_SETTINGS.multiDiscMode,
      mp3Bitrate:
        parsed.mp3Bitrate === 128 ||
        parsed.mp3Bitrate === 192 ||
        parsed.mp3Bitrate === 256 ||
        parsed.mp3Bitrate === 320
          ? parsed.mp3Bitrate
          : DEFAULT_SPOTIRIP_SETTINGS.mp3Bitrate,
      embedArtwork:
        typeof parsed.embedArtwork === "boolean"
          ? parsed.embedArtwork
          : DEFAULT_SPOTIRIP_SETTINGS.embedArtwork,
      autoSelectMatches:
        typeof parsed.autoSelectMatches === "boolean"
          ? parsed.autoSelectMatches
          : DEFAULT_SPOTIRIP_SETTINGS.autoSelectMatches,
      smartDedup:
        typeof parsed.smartDedup === "boolean"
          ? parsed.smartDedup
          : DEFAULT_SPOTIRIP_SETTINGS.smartDedup,
    };
  } catch {
    return DEFAULT_SPOTIRIP_SETTINGS;
  }
}

export function saveSpotiRipSettings(settings: SpotiRipSettings) {
  window.localStorage.setItem(STORAGE_KEY, JSON.stringify(settings));
}