export type AlbumTag = 'Album' | 'EP' | 'Demo' | 'Deluxe' | 'Single'; export type AudioFormat = 'mp3' | 'm4a' | 'flac' | 'wav'; export interface Song { id: string; title: string; duration: string; previewUrl: string; // URL to 30-second preview fullUrl: string; // URL to full song (locked until purchase) } export interface Album { id: string; title: string; coverImage: string; year: number; genre: string; price: number; description: string; songs: Song[]; tag: AlbumTag; // EP, Demo, Deluxe, etc. format: AudioFormat; // mp3, m4a, flac, wav bitrate: string; // e.g., "320kbps", "lossless" } export type PurchaseStatus = 'pending' | 'approved' | 'rejected'; export type PaymentMethod = 'ipg' | 'card-to-card'; export interface Purchase { id?: number; albumId: string; transactionId: string; customerName?: string; email?: string; phoneNumber?: string; txReceipt?: string; purchaseDate: Date | number; approvalStatus?: PurchaseStatus; // pending, approved, rejected paymentMethod?: PaymentMethod; // ipg or card-to-card }