import assert from 'node:assert/strict';
import test from 'node:test';
import {
  buildInsufficientBalancePayload,
  createRechargeService,
  isAllowedRechargeAmount,
  loadRechargeConfig,
} from './billing-recharge.mjs';

test('loadRechargeConfig parses tier list', () => {
  const previous = process.env.H5_RECHARGE_TIERS_CENTS;
  process.env.H5_RECHARGE_TIERS_CENTS = '500,1000,3000';
  try {
    const config = loadRechargeConfig();
    assert.deepEqual(config.tiersCents, [500, 1000, 3000]);
    assert.equal(config.minRechargeCents, 500);
  } finally {
    if (previous === undefined) delete process.env.H5_RECHARGE_TIERS_CENTS;
    else process.env.H5_RECHARGE_TIERS_CENTS = previous;
  }
});

test('isAllowedRechargeAmount only accepts configured tiers', () => {
  const config = { tiersCents: [500, 1000, 3000], minRechargeCents: 500 };
  assert.equal(isAllowedRechargeAmount(1000, config), true);
  assert.equal(isAllowedRechargeAmount(2000, config), false);
});

test('buildInsufficientBalancePayload includes recharge hints', () => {
  const config = { tiersCents: [500, 1000], minRechargeCents: 500 };
  const payload = buildInsufficientBalancePayload(0, config);
  assert.equal(payload.code, 'INSUFFICIENT_BALANCE');
  assert.equal(payload.balanceCents, 0);
  assert.deepEqual(payload.suggestedTiers, [500, 1000]);
});

test('fulfillOrder routes template_purchase to template catalog service', async () => {
  const orderRow = {
    id: 'order-tpl-1',
    user_id: 'user-1',
    amount_cents: 990,
    channel: 'wechat',
    status: 'pending',
    pay_mode: 'native',
    out_trade_no: 'TPTEST001',
    provider_txn: null,
    paid_at: null,
    expire_at: Date.now() + 60_000,
    created_at: Date.now(),
    code_url: null,
    h5_url: null,
    order_purpose: 'template_purchase',
    order_purpose_ref: 'page-template-travel',
  };
  const pool = {
    async getConnection() {
      const conn = {
        async beginTransaction() {},
        async commit() {},
        async rollback() {},
        async release() {},
        async query(sql, params = []) {
          const text = String(sql);
          if (text.includes('FROM h5_payment_orders WHERE id = ? FOR UPDATE')) {
            return [[orderRow], []];
          }
          if (text.includes('UPDATE h5_payment_orders') && text.includes("status = 'paid'")) {
            orderRow.status = 'paid';
            return [{ affectedRows: 1 }, []];
          }
          throw new Error(`Unhandled SQL: ${text.slice(0, 100)}`);
        },
      };
      return conn;
    },
  };
  let templateFulfillArgs = null;
  const templateCatalogService = {
    async fulfillWechatPurchaseLocked(args) {
      templateFulfillArgs = args;
      return {
        ok: true,
        skillName: 'page-template-travel',
        grantedSkills: ['page-template-travel'],
        balanceCents: 1200,
      };
    },
  };
  const userAuth = {
    async getUserById(userId) {
      return { id: userId, balance_cents: 1200 };
    },
    async recharge() {
      throw new Error('recharge should not run for template_purchase');
    },
  };
  const service = createRechargeService(pool, { userAuth, templateCatalogService });
  const result = await service.fulfillOrder(
    {
      id: orderRow.id,
      userId: orderRow.user_id,
      amountCents: orderRow.amount_cents,
      status: 'pending',
      orderPurpose: 'template_purchase',
      orderPurposeRef: 'page-template-travel',
    },
    { trade_state: 'SUCCESS', amount: { total: 990 }, transaction_id: 'wx-txn-1' },
  );
  assert.equal(result.ok, true);
  assert.equal(result.skillName, 'page-template-travel');
  assert.deepEqual(result.grantedSkills, ['page-template-travel']);
  assert.equal(result.balanceCents, 1200);
  assert.ok(templateFulfillArgs);
  assert.equal(orderRow.status, 'paid');
});