const test = require('node:test');
const assert = require('node:assert/strict');
const fs = require('node:fs');
const path = require('node:path');
const vm = require('node:vm');
const root = path.resolve(__dirname, '..');

function preprocess(source, app) {
  const stack = [true];
  return source.split('\n').filter(line => {
    const directive = line.match(/\/\/\s*#(ifdef|ifndef) (APP-PLUS|H5)/);
    if (directive) {
      const enabled = directive[2] === 'APP-PLUS' ? app === true : app === 'h5';
      stack.push(stack.at(-1) && (directive[1] === 'ifdef' ? enabled : !enabled)); return false;
    }
    if (/\/\/\s*#endif/.test(line)) { stack.pop(); return false; }
    return stack.at(-1);
  }).join('\n');
}
function loadModule(file, context, app = true) {
  const source = preprocess(fs.readFileSync(path.join(root, file), 'utf8'), app)
    .replace(/^import .*;\r?$/gm, '')
    .replace(/export (async function|function)/g, '$1')
    .replace(/export const /g, 'const ')
    .replace(/export default request;/g, '');
  vm.createContext(context);
  vm.runInContext(source, context, { filename: file });
  return context;
}
function uniMock() {
  const storage = new Map([['token', 'test-token'], ['user', { userId: 7 }]]);
  const messages = [];
  const navigations = [];
  return { storage, messages, navigations, getStorageSync: k => storage.get(k), setStorageSync: (k,v) => storage.set(k,v),
    removeStorageSync: k => storage.delete(k), showToast: v => messages.push(v.title), $emit() {},
    showModal: () => assert.fail('Douyin must not add payment confirmation modals'),
    showLoading() {}, hideLoading() {},
    navigateTo: options => { navigations.push(options.url); options.success?.(); },
    redirectTo: options => { navigations.push(options.url); options.success?.(); } };
}
const payment = { orderNum: 'order-1', douyin: { appId: 'app', mchId: 'mch', prepayId: 'prepay',
  packageValue: 'Sign=DYPay', nonceStr: 'nonce', timeStamp: '1780000000', sign: 'sig' } };
async function payContext(overrides = {}, app = true) {
  const adapter = await import('../utils/douyin-pay-adapter.mjs');
  const context = { uni: uniMock(), BASE_URL: 'test-api', TOKEN_NAME: 'token', USER_DATA: 'user',
    ...adapter, canOpenDypay: () => true, initDypay: () => true, resetDypay: () => {},
    openDypay: (_, cb) => cb({ resultCode: '0' }),
    request: async options => options.url === '/payment/douyin/resume'
      ? ({ bizcode: 100, data: { state: 'paid', orderNum: options.data.orderNum } })
      : ({ bizcode: 100, data: { state: 2 } }), ...overrides };
  loadModule('utils/payment-navigation.js', context, app);
  return loadModule('utils/douyin-pay.js', context, app);
}
const successPage = '/pages/order_package/order_submit_ok/order_submit_ok';
test('SDK success is confirmed with server before showing success', async () => {
  let queries = 0;
  const ctx = await payContext({ request: async () => { queries++; return { bizcode:100, data:{state:2} }; } });
  await ctx.appDypayFun(payment);
  assert.equal(queries, 1);
  assert.deepEqual(ctx.uni.navigations, [successPage]);
  assert.equal(ctx.uni.storage.has('tb-douyin:test-api:7'), false);
});
test('SDK success plus network failure remains recoverable, never success', async () => {
  const ctx = await payContext({ request: async () => { throw new Error('offline'); } });
  await ctx.appDypayFun(payment);
  assert.equal(ctx.uni.storage.get('tb-douyin:test-api:7'), 'order-1');
  assert.equal(ctx.uni.messages.includes('支付成功'), false);
  assert.deepEqual(ctx.uni.navigations, []);
});
test('cancel still queries authoritative server state', async () => {
  const ctx = await payContext({ openDypay: (_, cb) => cb({ resultCode:'1' }) });
  await ctx.appDypayFun(payment);
  assert.deepEqual(ctx.uni.navigations, [successPage]);
});
test('old backend parameters never invoke native SDK', async () => {
  let calls = 0;
  const ctx = await payContext({ openDypay: () => calls++ });
  await ctx.appDypayFun({ orderNum:'old', douyin:{appId:'app'} });
  assert.equal(calls, 0);
  assert.match(ctx.uni.messages.at(-1), /缺少支付参数/);
});
test('new backend orderInfo (object or JSON) reaches native SDK with exact signed fields', async () => {
  const { toSdkPayInfo } = await import('../utils/douyin-pay-adapter.mjs');
  const expected = toSdkPayInfo(payment);
  for (const orderInfo of [expected, JSON.stringify(expected)]) {
    let received;
    const ctx = await payContext({ openDypay: (options, cb) => { received = options.payInfo; cb({resultCode:'0'}); } });
    const result = await ctx.appDypayFun({orderNum:'order-1', douyin:{type:'app', orderInfo}});
    assert.deepEqual(received, expected);
    assert.equal(result.state, 'paid');
  }
});
test('legacy douyinPayFun calls native bridge, never uni payment provider or URL fallback', async () => {
  let nativeCalls = 0;
  const ctx = await payContext({ openDypay: (_, cb) => { nativeCalls++; cb({resultCode:'0'}); } });
  ctx.uni.requestPayment = () => assert.fail('Must not use built-in payment provider for Douyin');
  ctx.plus = { runtime: { openURL: () => assert.fail('Must not synthesize cashier URLs') } };
  loadModule('utils/payUtils.js', ctx);
  const result = await ctx.douyinPayFun(payment.douyin, 1, payment.orderNum);
  assert.equal(nativeCalls, 1);
  assert.equal(result.state, 'paid');
});
test('invalid JSON and Scheme-only payload do not call SDK or create pending state', async () => {
  for (const douyin of [{orderInfo:'{'}, {orderStr:'snssdk1128://open'}, {type:'h5', prepayId:'prepay'}]) {
    const ctx = await payContext({openDypay: () => assert.fail('Invalid data reached SDK')});
    const result = await ctx.appDypayFun({orderNum:'invalid', douyin});
    assert.equal(result.state, 'error');
    assert.equal(ctx.uni.storage.has('tb-douyin:test-api:7'), false);
  }
});
test('legacy retry of settled order queries state without opening payment again', async () => {
  const ctx = await payContext({openDypay: () => assert.fail('Retry opened payment again')});
  ctx.uni.storage.set('tb-douyin:test-api:7', payment.orderNum);
  const result = await ctx.appDypayFun(payment);
  assert.equal(result.state, 'paid');
});
test('duplicate invocation does not open SDK twice', async () => {
  let done;
  let calls = 0;
  const ctx = await payContext({ openDypay: (_, cb) => { calls++; done = cb; } });
  const first = ctx.appDypayFun(payment);
  await ctx.appDypayFun(payment);
  done({resultCode:'0'});
  await first;
  assert.equal(calls, 1);
});
test('account switch suppresses old account result and retains its pending record', async () => {
  const ctx = await payContext();
  ctx.request = async () => { ctx.uni.storage.set('user', {userId:8}); return {bizcode:100,data:{state:2}}; };
  await ctx.appDypayFun(payment);
  assert.equal(ctx.uni.messages.includes('支付成功'), false);
  assert.deepEqual(ctx.uni.navigations, []);
  assert.equal(ctx.uni.storage.get('tb-douyin:test-api:7'), 'order-1');
});
test('cold start queries saved order; unavailable app does not create order', async () => {
  const ctx = await payContext({ canOpenDypay: () => false });
  assert.equal(await ctx.prepareDouyinPay('douyin'), false);
  ctx.uni.storage.set('tb-douyin:test-api:7', 'pending');
  await ctx.resumeDouyinPay();
  assert.deepEqual(ctx.uni.navigations, [successPage]);
});
test('non-App excludes Douyin and never accesses native SDK', async () => {
  const ctx = await payContext({}, false);
  assert.equal(ctx.douyinPayTypes('1,2,3'), '1,2,3');
  assert.equal(ctx.filterDouyinPayWays([{type:'douyin'},{type:'wechat'}]).length, 1);
  assert.equal(await ctx.prepareDouyinPay('douyin'), false);
});

test('H5 displays configured Douyin but blocks payment before order creation', async () => {
  const ctx = await payContext({ canOpenDypay: () => { throw new Error('Native SDK must not run'); } }, 'h5');
  assert.equal(ctx.douyinPayTypes('1,2,3'), '1,2,3,6');
  assert.equal(ctx.douyinPayTypes('1,6'), '1,6');
  assert.equal(ctx.filterDouyinPayWays([{type:'douyin'},{type:'wechat'}]).length, 2);
  assert.equal(ctx.filterDouyinPayWays([]).length, 0);
  assert.equal(await ctx.prepareDouyinPay('douyin'), false);
  assert.match(ctx.uni.messages.at(-1), /仅支持/);
});
test('request terminates on HTTP500, business500, bad JSON, auth failure and offline', async () => {
  for (const response of [{statusCode:500,data:{}}, {statusCode:200,data:{status:500}},
    {statusCode:200,data:'<html>'}, {statusCode:200,data:{bizcode:201,errcode:999}}, null]) {
    const uni = uniMock();
    uni.request = options => response ? options.success(response) : options.fail(new Error('offline'));
    const ctx = loadModule('utils/request.js', { uni, TOKEN_NAME:'token', USER_DATA:'user',
      getStorageFun: () => '', BASE_URL:'test-api', Authorization:'test-only', console:{log(){}}, setTimeout, clearTimeout });
    await assert.rejects(ctx.request({url:'/payment/queryResult'}));
  }
});

test('killed App resumes the original unpaid transaction, without creating another order', async () => {
  const ctx = await payContext();
  // This is exactly the legacy persisted format: only an order number survives process death.
  ctx.uni.storage.set('tb-douyin:test-api:7', payment.orderNum);
  ctx.queryUntilSettled = async () => ({state:'pending'});
  await ctx.resumeDouyinPay();
  let opened = 0;
  const urls = [];
  ctx.request = async options => {
    urls.push(options.url);
    assert.equal(options.data.orderNum, payment.orderNum);
    return {bizcode:100, data:{state:'unpaid', orderNum:payment.orderNum, payment}};
  };
  ctx.openDypay = (options, cb) => { opened++; assert.equal(options.payInfo.prepayid, 'prepay'); cb({resultCode:'0'}); };
  ctx.queryUntilSettled = async () => ({state:'paid'});
  // Returning false intentionally stops the caller from creating a NEW order after resuming.
  assert.equal(await ctx.prepareDouyinPay('douyin'), false);
  assert.equal(opened, 1);
  assert.deepEqual(urls, ['/payment/douyin/resume']);
  assert.equal(ctx.uni.storage.has('tb-douyin:test-api:7'), false);
});

test('cold start never opens the SDK or asks for payment and preserves pending state', async () => {
  const ctx = await payContext({openDypay:()=>assert.fail('Unexpected SDK call'),
    queryUntilSettled: async()=>({state:'pending'})});
  ctx.uni.storage.set('tb-douyin:test-api:7', payment.orderNum);
  ctx.uni.showModal = () => assert.fail('onShow must not ask for payment');
  await ctx.resumeDouyinPay();
  assert.equal(ctx.uni.storage.get('tb-douyin:test-api:7'), payment.orderNum);
  assert.deepEqual(ctx.uni.navigations, []);
});

test('unknown, processing, network error and missing backend remain locked', async () => {
  for (const mode of ['pending','NEW_STATE','offline','missing']) {
    const ctx = await payContext({openDypay:()=>assert.fail('Unknown result must not open SDK'),
      request: async()=> {
        if (mode === 'offline') throw new Error('offline');
        if (mode === 'missing') return {bizcode:404};
        return {bizcode:100,data:{state:mode,orderNum:payment.orderNum}};
      }});
    ctx.uni.storage.set('tb-douyin:test-api:7', payment.orderNum);
    assert.equal(await ctx.prepareDouyinPay('douyin'), false);
    assert.equal(ctx.uni.storage.get('tb-douyin:test-api:7'), payment.orderNum);
  }
});

test('terminal server result clears saved order without payment and allows the next action', async () => {
  for (const state of ['paid','closed']) {
    const ctx = await payContext({openDypay:()=>assert.fail('Terminal order reached SDK'),
      request: async options => options.url === '/payment/douyin/resume'
        ? ({bizcode:100,data:{state,orderNum:payment.orderNum}})
        : ({bizcode:100,data:{state:2}})});
    ctx.uni.storage.set('tb-douyin:test-api:7', payment.orderNum);
    assert.equal(await ctx.prepareDouyinPay('douyin'), state === 'closed');
    assert.equal(ctx.uni.storage.has('tb-douyin:test-api:7'), false);
    assert.equal(await ctx.prepareDouyinPay('douyin'), true);
  }
});

test('closed old transaction unlocks a fresh server order, never reopens old parameters', async () => {
  let resets=0, opened;
  const ctx=await payContext({resetDypay:()=>resets++, request:async options => options.url === '/payment/douyin/resume'
    ? {bizcode:100,data:{state:'closed',orderNum:'expired-order'}} : {bizcode:100,data:{state:2}},
    openDypay:(options,cb)=>{opened=options.payInfo.prepayid; cb({resultCode:'0'});}});
  ctx.uni.storage.set('tb-douyin:test-api:7','expired-order');
  assert.equal(await ctx.prepareDouyinPay('douyin'),true);
  assert.equal(resets,1);
  const fresh={...payment,orderNum:'fresh-order',douyin:{...payment.douyin,prepayId:'fresh-prepay'}};
  await ctx.appDypayFun(fresh);
  assert.equal(opened,'fresh-prepay');
  assert.equal(ctx.uni.storage.has('tb-douyin:test-api:7'),false);
});

test('switching accounts during old-order closure cannot create a new payment', async () => {
  const ctx=await payContext();
  ctx.request=async()=>{
    ctx.uni.storage.set('user',{userId:8});
    return {bizcode:100,data:{state:'closed',orderNum:'expired-order'}};
  };
  ctx.uni.storage.set('tb-douyin:test-api:7','expired-order');
  assert.equal(await ctx.prepareDouyinPay('douyin'),false);
  assert.equal(ctx.uni.storage.get('tb-douyin:test-api:7'),'expired-order');
  assert.deepEqual(ctx.uni.navigations, []);
});

test('unconfirmed server state never resets the native lock and explains why', async () => {
  const ctx=await payContext({resetDypay:()=>assert.fail('Unconfirmed native reset'),
    request:async()=>({bizcode:100,data:{state:'pending',reason:'QUERY_FAILED',orderNum:payment.orderNum}})});
  ctx.uni.storage.set('tb-douyin:test-api:7',payment.orderNum);
  assert.equal(await ctx.prepareDouyinPay('douyin'),false);
  assert.match(ctx.uni.messages.at(-1),/查单失败/);
  assert.equal(ctx.uni.storage.get('tb-douyin:test-api:7'),payment.orderNum);
});

test('unpaid server confirmation resets a missing native callback before reinitializing SDK', async () => {
  const sequence=[];
  const ctx=await payContext({resetDypay:()=>sequence.push('reset'),initDypay:()=>{sequence.push('init');return true;},
    request:async()=>({bizcode:100,data:{state:'unpaid',orderNum:payment.orderNum,payment}}),
    queryUntilSettled:async()=>({state:'pending'})});
  ctx.uni.storage.set('tb-douyin:test-api:7',payment.orderNum);
  assert.equal(await ctx.prepareDouyinPay('douyin'),false);
  assert.deepEqual(sequence,['reset','init']);
});

test('SDK rejection stays recoverable but no longer hides the native failure', async () => {
  const ctx=await payContext({openDypay:(_,cb)=>cb({resultCode:'103'}),queryUntilSettled:async()=>({state:'pending'})});
  await ctx.appDypayFun(payment);
  assert.match(ctx.uni.messages.at(-1),/原生支付仍在处理中/);
  assert.equal(ctx.uni.storage.get('tb-douyin:test-api:7'),payment.orderNum);
  assert.equal(ctx.uni.messages.includes('支付成功'),false);
});

test('account switch during resume response or native reset cannot invoke SDK', async () => {
  for (const phase of ['response','reset']) {
    const ctx = await payContext({openDypay:()=>assert.fail('Old account reached SDK')});
    ctx.uni.storage.set('tb-douyin:test-api:7', payment.orderNum);
    ctx.request = async()=> {
      if (phase === 'response') ctx.uni.storage.set('user',{userId:8});
      return {bizcode:100,data:{state:'unpaid',orderNum:payment.orderNum,payment}};
    };
    if (phase === 'reset') ctx.resetDypay = () => ctx.uni.storage.set('user',{userId:8});
    await ctx.prepareDouyinPay('douyin');
    assert.equal(ctx.uni.storage.get('tb-douyin:test-api:7'), payment.orderNum);
  }
});

test('concurrent clicks and onShow during continuation open only one native payment', async () => {
  let done;
  let calls = 0;
  const ctx = await payContext({request: async()=>({bizcode:100,data:{state:'unpaid',orderNum:payment.orderNum,payment}}),
    queryUntilSettled: async()=>({state:'paid'}),
    openDypay:(_,cb)=>{ calls++; done = cb; }});
  ctx.uni.storage.set('tb-douyin:test-api:7', payment.orderNum);
  const first = ctx.prepareDouyinPay('douyin');
  await new Promise(resolve=>setImmediate(resolve));
  assert.equal(await ctx.prepareDouyinPay('douyin'), false);
  await ctx.appDypayFun(payment);
  await ctx.resumeDouyinPay();
  done({resultCode:'0'});
  await first;
  assert.equal(calls, 1);
  assert.deepEqual(ctx.uni.navigations, [successPage]);
});

test('returning from Douyin with a missing callback completes via server query and navigates once', async () => {
  let lateCallback;
  const ctx = await payContext({openDypay:(_,cb)=>{ lateCallback = cb; }});
  const paying = ctx.appDypayFun(payment);
  await ctx.resumeDouyinPay();
  assert.equal((await paying).state, 'paid');
  lateCallback({resultCode:'0'});
  await ctx.resumeDouyinPay();
  assert.deepEqual(ctx.uni.navigations, [successPage]);
  assert.equal(ctx.uni.storage.has('tb-douyin:test-api:7'), false);
});

test('pending or failed foreground query never unlocks or navigates before the native callback', async () => {
  for (const mode of ['pending', 'offline']) {
    let done, resets = 0;
    const ctx = await payContext({openDypay:(_,cb)=>{ done=cb; }, resetDypay:()=>resets++,
      queryUntilSettled:async()=>{ if (mode === 'offline') throw new Error('offline'); return {state:'pending'}; }});
    const paying = ctx.appDypayFun(payment);
    await ctx.resumeDouyinPay();
    assert.equal(resets, 0);
    assert.deepEqual(ctx.uni.navigations, []);
    assert.equal(ctx.uni.storage.get('tb-douyin:test-api:7'), payment.orderNum);
    ctx.queryUntilSettled = async()=>({state:'paid'});
    done({resultCode:'0'});
    await paying;
    assert.deepEqual(ctx.uni.navigations, [successPage]);
  }
});

test('native callback racing with foreground query still navigates only once', async () => {
  let done, finishQuery;
  const ctx=await payContext({openDypay:(_,cb)=>{done=cb;}});
  const paying=ctx.appDypayFun(payment);
  ctx.queryUntilSettled=()=>new Promise(resolve=>{finishQuery=resolve;});
  const foreground=ctx.resumeDouyinPay();
  ctx.queryUntilSettled=async()=>({state:'paid'});
  done({resultCode:'0'});
  await paying;
  finishQuery({state:'paid'});
  await foreground;
  assert.deepEqual(ctx.uni.navigations,[successPage]);
});

test('full page stack falls back to redirect; navigation failure remains retryable without another payment', async () => {
  const ctx=await payContext();
  ctx.uni.navigateTo=options=>options.fail();
  await ctx.appDypayFun(payment);
  assert.deepEqual(ctx.uni.navigations,[successPage]);
  const failed=await payContext();
  failed.uni.navigateTo=options=>options.fail();
  failed.uni.redirectTo=options=>options.fail();
  await failed.appDypayFun(payment);
  assert.equal(failed.uni.storage.get('tb-douyin:test-api:7'),payment.orderNum);
  failed.uni.redirectTo=options=>{ failed.uni.navigations.push(options.url); options.success(); };
  failed.openDypay=()=>assert.fail('Already paid order must not open SDK again');
  await failed.prepareDouyinPay('douyin');
  assert.deepEqual(failed.uni.navigations,[successPage]);
  assert.equal(failed.uni.storage.has('tb-douyin:test-api:7'),false);
});

test('already visible success page is not pushed again', async () => {
  const ctx=await payContext({getCurrentPages:()=>[{route:successPage.slice(1)}]});
  await ctx.appDypayFun(payment);
  assert.deepEqual(ctx.uni.navigations,[]);
  assert.equal(ctx.uni.storage.has('tb-douyin:test-api:7'),false);
});

test('WeChat and Alipay retain the same shared success page', async () => {
  const ctx=await payContext({feedback:async()=>({bizcode:100}),console:{log(){},error(){}}});
  loadModule('utils/payUtils.js',ctx);
  ctx.uni.requestPayment=options=>options.success({});
  ctx.appWxpayFun({type:'app'},1,'wechat-order');
  ctx.zfbPayFun({type:'app',orderStr:'test'},2,'alipay-order');
  assert.deepEqual(ctx.uni.navigations,[successPage,successPage]);
});

test('resume refuses mismatched order, bad signed parameters and native initialization failure', async () => {
  for (const mode of ['outer-order','inner-order','signature','init']) {
    const ctx = await payContext({openDypay:()=>assert.fail('Invalid resume reached SDK')});
    ctx.uni.storage.set('tb-douyin:test-api:7', payment.orderNum);
    const resumePayment = JSON.parse(JSON.stringify(payment));
    if (mode === 'inner-order') resumePayment.orderNum = 'different';
    if (mode === 'signature') delete resumePayment.douyin.sign;
    if (mode === 'init') ctx.initDypay = ()=>false;
    ctx.request = async()=>({bizcode:100,data:{state:'unpaid',
      orderNum:mode === 'outer-order' ? 'different' : payment.orderNum,payment:resumePayment}});
    await ctx.prepareDouyinPay('douyin');
    assert.equal(ctx.uni.storage.get('tb-douyin:test-api:7'), payment.orderNum);
  }
});

test('native initialization failure before first payment does not leave a permanent lock', async () => {
  const ctx = await payContext({initDypay:()=>false,openDypay:()=>assert.fail('Invalid SDK init')});
  assert.equal((await ctx.appDypayFun(payment)).state, 'error');
  assert.equal(ctx.uni.storage.has('tb-douyin:test-api:7'), false);
});