import { apiClient, ensureCsrfCookie } from './client';

/**
 * API-модуль биллинга (Sprint 2 Plan C).
 *
 * Эндпоинты под [auth:sanctum, tenant]: GET wallet/transactions/invoices
 * (E3), POST topup (E1 — добавляется в Task 5). GET'ы не требуют CSRF-cookie.
 */

/** Тариф в составе ответа GET /api/billing/wallet. */
export interface WalletTariff {
    code: string;
    name: string;
    price_monthly: string | null;
    billing_model: string;
    features: string[];
}

/** Ответ GET /api/billing/wallet — кошелёк тенанта. */
export interface Wallet {
    balance_rub: string;
    balance_leads: number;
    runway_days: number | null;
    tariff: WalletTariff | null;
}

/** GET /api/billing/wallet — балансы + текущий тариф + runway. */
export async function getWallet(): Promise<Wallet> {
    const { data } = await apiClient.get<Wallet>('/api/billing/wallet');
    return data;
}

/** Строка истории транзакций (GET /api/billing/transactions). */
export interface BillingTransaction {
    id: number;
    code: string;
    type: string;
    description: string | null;
    amount_rub: string;
    amount_leads: number;
    balance_rub_after: string | null;
    created_at: string;
}

/** Пагинированный ответ GET /api/billing/transactions. */
export interface TransactionsPage {
    data: BillingTransaction[];
    meta: { current_page: number; last_page: number; total: number; per_page: number };
}

/** Счёт тенанта (GET /api/billing/invoices). */
export interface BillingInvoice {
    id: number;
    invoice_number: string;
    amount_total: string;
    status: string;
    issued_at: string;
    has_pdf: boolean;
}

/** GET /api/billing/transactions — пагинированная история транзакций. */
export async function getTransactions(params: { page?: number; type?: string }): Promise<TransactionsPage> {
    const { data } = await apiClient.get<TransactionsPage>('/api/billing/transactions', { params });
    return data;
}

/** GET /api/billing/invoices — счета тенанта (real-but-empty до Б-1). */
export async function getInvoices(): Promise<{ data: BillingInvoice[] }> {
    const { data } = await apiClient.get<{ data: BillingInvoice[] }>('/api/billing/invoices');
    return data;
}

/** Результат POST /api/billing/topup. */
export interface TopupResult {
    transaction: {
        id: number;
        type: string;
        amount_rub: string;
        balance_rub_after: string | null;
        created_at: string;
    };
    balance_rub: string;
}

/** POST /api/billing/topup — пополнить рублёвый баланс (MVP-stub). */
export async function topup(amountRub: number): Promise<TopupResult> {
    await ensureCsrfCookie();
    const { data } = await apiClient.post<TopupResult>('/api/billing/topup', { amount_rub: amountRub });
    return data;
}