import { PackageName } from './user';

// Nested user on a purchase (subset of the full User model)
export interface PurchaseUser {
    id: number;
    uuid: string;
    first_name: string | null;
    last_name: string | null;
    full_name: string | null;
    email: string | null;
    mobile: string | null;
}

// Nested product on a purchase, with its package
export interface PurchaseProduct {
    id: number;
    title: string | null;
    price: number | null;
    type: number | null;
    package_name_id: number;
    package_name: PackageName | null;
}

// A purchase = a subscription transaction
export interface Purchase {
    id: number;
    user_id: number;
    product_id: number | null;
    amount: number;
    uuid: string;
    status: number;
    authority: string | null;
    ref_id: string | null;
    gateway: number;
    created_at: string;
    updated_at: string;
    user: PurchaseUser | null;
    product: PurchaseProduct | null;
}

// Laravel length-aware paginator envelope
export interface Paginated<T> {
    current_page: number;
    data: T[];
    last_page: number;
    per_page: number;
    total: number;
    from: number | null;
    to: number | null;
    next_page_url: string | null;
    prev_page_url: string | null;
}

// Payment source (gateway) — matches backend Transaction::GATEWAYS
export const PAYMENT_GATEWAYS = {
    asanpardakht: { code: 1, label: 'آسان‌پرداخت' },
    zarinpal: { code: 2, label: 'زرین‌پال' },
    digipay: { code: 3, label: 'دیجی‌پی' },
    cafe: { code: 4, label: 'کافه بازار' },
    myket: { code: 5, label: 'مایکت' },
} as const;

export type PaymentGatewayKey = keyof typeof PAYMENT_GATEWAYS;

export const getGatewayLabel = (gateway: number | null): string => {
    const found = Object.values(PAYMENT_GATEWAYS).find((g) => g.code === gateway);
    return found ? found.label : 'نامشخص';
};

// Purchase status — matches backend Transaction::STATUSES
export const PURCHASE_STATUSES: Record<number, string> = {
    1: 'در انتظار پرداخت',
    2: 'موفق',
    3: 'مصرف‌شده',
};

export const getPurchaseStatusLabel = (status: number | null): string => {
    if (status === null || status === undefined) return 'نامشخص';
    return PURCHASE_STATUSES[status] || 'نامشخص';
};

// Filters sent to the purchases endpoint
export interface PurchaseFilters {
    email?: string;
    mobile?: string;
    package_name?: string;
    gateway?: string; // gateway name key (e.g. "zarinpal")
    status?: number;
    per_page?: number;
    page?: number;
}