import test from 'node:test'
import assert from 'node:assert/strict'
import express from 'express'
import http from 'node:http'

import pddExtensionRouter from './pdd-extension.js'
import {
  getOrCreatePddRsaKeyPair,
  testEncryptPddPayload,
} from '../services/platforms/pdd/pdd-crypto-service.js'
import {
  generatePddStoreSyncToken,
  getPddStoreById,
  savePddSourcesConfig,
  getPddSourcesConfig,
} from '../services/platforms/pdd/pdd-source-config-service.js'
import { PddClient } from '../services/platforms/pdd/pdd-client.js'

import { query } from '../db/client.js'

function makeTestApp() {
  const app = express()
  app.use(express.json())
  app.use('/api/v1/pdd/extension', pddExtensionRouter)
  return app
}

test('pdd-extension router: GET /public-key and POST /sync-cookie full flow', async (t) => {
  let dbAvailable = false
  try {
    const check = await query('SELECT 1').catch(() => null)
    dbAvailable = Boolean(check)
  } catch {
    dbAvailable = false
  }

  if (!dbAvailable) {
    t.skip('Skipping integration test: PostgreSQL database is not reachable outside container')
    return
  }

  const app = makeTestApp()
  const server = http.createServer(app)
  await new Promise<void>((resolve) => server.listen(0, resolve))
  const addr = server.address()
  const port = typeof addr === 'object' && addr ? addr.port : 0
  const baseUrl = `http://127.0.0.1:${port}/api/v1/pdd/extension`

  // Prepare a test store in config
  const originalConfig = getPddSourcesConfig()
  const testShopId = 'test_shop_router_01'
  const mockConfig = {
    ...originalConfig,
    stores: [
      {
        shopId: testShopId,
        shopName: '测试路由店铺',
        cookie: 'old_cookie=123;',
        cookieValid: false,
        enabled: true,
      },
    ],
  }
  await savePddSourcesConfig(mockConfig)

  // Generate sync token
  const token = await generatePddStoreSyncToken(testShopId)

  // Mock PddClient.testCookie
  const originalTestCookie = PddClient.testCookie
  PddClient.testCookie = async () => ({
    valid: true,
    totalOrders: 88,
  })

  try {
    // 1. Test GET /public-key
    const pkResp = await fetch(`${baseUrl}/public-key`)
    assert.equal(pkResp.status, 200)
    const pkData = await pkResp.json()
    assert.equal(pkData.code, 0)
    assert.ok(pkData.data.publicKeySpki)
    assert.equal(pkData.data.algorithm, 'RSA-OAEP-256')

    // 2. Test POST /sync-cookie with missing token
    const kp = getOrCreatePddRsaKeyPair()
    const payload = {
      shopId: testShopId,
      cookie: 'new_fresh_cookie=xyz;',
      userAgent: 'Mozilla/5.0 Extension Test',
      timestamp: Date.now(),
      nonce: 'nonce_test_' + Math.random().toString(36).slice(2),
    }
    const envelope = testEncryptPddPayload(payload, kp.publicKeyPem)

    const noTokenResp = await fetch(`${baseUrl}/sync-cookie`, {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({ envelope }),
    })
    assert.equal(noTokenResp.status, 401)

    // 3. Test POST /sync-cookie with wrong token
    const wrongTokenResp = await fetch(`${baseUrl}/sync-cookie`, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
        'X-Shop-Token': 'wrong-token-abc',
      },
      body: JSON.stringify({
        envelope: testEncryptPddPayload(
          { ...payload, nonce: 'nonce_wrong_' + Math.random().toString(36).slice(2) },
          kp.publicKeyPem,
        ),
      }),
    })
    assert.equal(wrongTokenResp.status, 403)

    // 4. Test POST /sync-cookie with valid token and fresh nonce
    const freshPayload = {
      ...payload,
      nonce: 'nonce_fresh_' + Math.random().toString(36).slice(2),
    }
    const freshEnvelope = testEncryptPddPayload(freshPayload, kp.publicKeyPem)
    const validResp = await fetch(`${baseUrl}/sync-cookie`, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
        'X-Shop-Token': token,
      },
      body: JSON.stringify({ envelope: freshEnvelope }),
    })
    assert.equal(validResp.status, 200)
    const validData = await validResp.json()
    assert.equal(validData.code, 0)
    assert.equal(validData.data.shopId, testShopId)
    assert.equal(validData.data.valid, true)
    assert.equal(validData.data.totalOrders, 88)

    // Verify store was updated in memory/config
    const updatedStore = getPddStoreById(testShopId)
    assert.ok(updatedStore)
    assert.equal(updatedStore.cookie, 'new_fresh_cookie=xyz;')
    assert.equal(updatedStore.cookieValid, true)
    assert.ok(updatedStore.lastExtensionSyncAt)
  } finally {
    PddClient.testCookie = originalTestCookie
    await savePddSourcesConfig(originalConfig)
    await new Promise<void>((resolve) => server.close(() => resolve()))
  }
})