'use strict';

const assert = require('assert');

async function loadStepWithResult(result) {
  const servicePath = require.resolve('../src/services/chatgpt_service');
  const screenshotPath = require.resolve('../src/utils/screenshot');
  const stepPath = require.resolve('../src/pipeline/steps/chatgpt_register');
  const service = require(servicePath);
  const screenshot = require(screenshotPath);
  const originalLogin = service.loginOrRegisterChatGPT;
  const originalScreenshot = screenshot.saveErrorScreenshot;
  service.loginOrRegisterChatGPT = async () => result;
  screenshot.saveErrorScreenshot = async () => null;
  delete require.cache[stepPath];
  const step = require(stepPath);
  service.loginOrRegisterChatGPT = originalLogin;
  screenshot.saveErrorScreenshot = originalScreenshot;
  return step;
}

function makeContext({ saveResult = true, existingSession = null } = {}) {
  const writes = [];
  const statuses = [];
  const messages = [];
  const ctx = {
    account: { email: 'target@example.com' },
    page: { url: () => 'https://chatgpt.com/' },
    params: { age: 23, clearAuthState: false },
    log: () => {},
    results: {},
    shouldStop: false,
    dbWrite: async (name, args) => {
      writes.push({ name, args });
      if (name === 'getAccount') {
        return {
          chatgpt_session: existingSession,
          password_changed: 0,
          fa_changed: 0,
        };
      }
      if (name === 'updateAccountChatgptResult') {
        return args[1] === '失败' ? true : saveResult;
      }
      return true;
    },
    updateStatus: async (_email, status) => { statuses.push(status); },
    updateMessage: async (_email, message) => { messages.push(message); },
  };
  return { ctx, writes, statuses, messages };
}

(async () => {
  const wrongSession = {
    user: { email: 'other@example.com' },
    expires: '2099-01-01T00:00:00.000Z',
  };
  const successExits = [
    { name: 'existing-session', created: false, status: '已登录' },
    { name: 'home-direct-session', created: false, status: '已登录' },
    { name: 'home-probe-session', created: false, status: '已登录' },
    { name: 'all-set-probe-session', created: true, status: '已注册' },
  ];

  for (const exit of successExits) {
    const step = await loadStepWithResult({
      ok: true,
      created: exit.created,
      status: exit.status,
      session: wrongSession,
      source: exit.name,
    });
    const { ctx, writes } = makeContext();
    await step(ctx);

    assert.strictEqual(ctx.results.chatgptRegister.success, false, `${exit.name} 错邮箱Session不得成功`);
    assert.strictEqual(ctx.results.chatgptRegister.code, 'CHATGPT_ACCOUNT_MISMATCH');
    const persistedWrongSession = writes.some(item => item.name === 'updateAccountChatgptResult'
      && item.args[1] !== '失败'
      && item.args[2]);
    assert.strictEqual(persistedWrongSession, false, `${exit.name} 错邮箱Session不得落库`);
  }

  const validStep = await loadStepWithResult({
    ok: true,
    created: false,
    status: '已登录',
    session: {
      user: { email: 'target@example.com' },
      expires: '2099-01-01T00:00:00.000Z',
    },
  });
  const validContext = makeContext();
  await validStep(validContext.ctx);
  assert.strictEqual(validContext.ctx.results.chatgptRegister.success, true);
  const validSave = validContext.writes.find(item => item.name === 'updateAccountChatgptResult'
    && item.args[1] === '已登录');
  assert(validSave, '目标邮箱Session应正常保存');

  const failedSaveStep = await loadStepWithResult({
    ok: true,
    created: false,
    status: '已登录',
    session: {
      user: { email: 'target@example.com' },
      expires: '2099-01-01T00:00:00.000Z',
    },
  });
  const failedSaveContext = makeContext({ saveResult: false });
  await failedSaveStep(failedSaveContext.ctx);
  assert.strictEqual(failedSaveContext.ctx.results.chatgptRegister.success, false);
  assert.strictEqual(failedSaveContext.ctx.results.chatgptRegister.code, 'DB_SAVE_FAILED');
  assert.strictEqual(failedSaveContext.ctx.shouldStop, true);
  assert(failedSaveContext.statuses.includes('ChatGPT失败'));
  assert(failedSaveContext.writes.some(item => item.name === 'updateAccountStatusReason'
    && item.args[1] === 'DB_SAVE_FAILED'));

  console.log('chatgpt_pipeline_session_guard.test.js: PASS');
})().catch(error => {
  console.error(error);
  process.exitCode = 1;
});