import fs from 'node:fs'
import path from 'node:path'

import YAML from 'yaml'

const workspace = process.cwd()
const failures = []

const fail = (message) => failures.push(message)
const readText = (filePath) => fs.readFileSync(path.join(workspace, filePath), 'utf8')
const listFiles = (entryPaths, extensions) => {
  const files = []
  const visit = (entryPath) => {
    const absolutePath = path.join(workspace, entryPath)
    if (!fs.existsSync(absolutePath)) return
    const stat = fs.statSync(absolutePath)
    if (stat.isDirectory()) {
      for (const name of fs.readdirSync(absolutePath)) {
        visit(path.join(entryPath, name))
      }
      return
    }
    if (extensions.has(path.extname(entryPath))) files.push(entryPath)
  }
  entryPaths.forEach(visit)
  return files
}

const parseJson = (filePath) => {
  try {
    return JSON.parse(readText(filePath))
  } catch (error) {
    fail(`${filePath} 不是有效 JSON：${error.message}`)
    return null
  }
}

const pagesConfig = parseJson('pages.json')
parseJson('manifest.json')
parseJson('package.json')
parseJson('package-lock.json')

const routeSource = readText('utils/navigation/routes.js')
const routeEntries = [...routeSource.matchAll(/^\s{2}([A-Z]\d{2}): defineRoute\(\{[\s\S]*?^\s{2}\}\),/gm)]
const routeKeys = routeEntries.map((match) => match[1])
const routePaths = routeEntries.map((match) => match[0].match(/path: "([^"]+)"/)?.[1]?.replace(/^\//, ''))
const configuredPages = pagesConfig?.pages?.map((page) => page.path) || []

if (new Set(routeKeys).size !== routeKeys.length) fail('路由键存在重复')
if (routePaths.some((routePath) => !routePath)) fail('存在没有静态 path 的路由')
for (const pagePath of configuredPages) {
  if (!fs.existsSync(path.join(workspace, `${pagePath}.vue`))) fail(`页面文件缺失：${pagePath}.vue`)
  if (!routePaths.includes(pagePath)) fail(`页面没有路由语义：${pagePath}`)
}
for (const routePath of routePaths) {
  if (!configuredPages.includes(routePath)) fail(`路由没有在 pages.json 注册：${routePath}`)
}

const sourceFiles = listFiles(
  ['App.vue', 'main.js', 'pages', 'components', 'composables', 'services', 'utils'],
  new Set(['.js', '.vue']),
)
const importPattern = /(?:from\s*|import\s*)["']([^"']+)["']/g
for (const filePath of sourceFiles) {
  const source = readText(filePath)
  if (filePath.endsWith('.vue') && !/<(?:template|script)(?:\s|>)/.test(source)) {
    fail(`${filePath} 缺少 <template> 或 <script>`)
  }
  for (const match of source.matchAll(importPattern)) {
    const specifier = match[1]
    if (!specifier.startsWith('.') && !specifier.startsWith('@/')) continue
    const basePath = specifier.startsWith('@/')
      ? path.join(workspace, specifier.slice(2))
      : path.resolve(workspace, path.dirname(filePath), specifier)
    const candidates = [basePath, `${basePath}.js`, `${basePath}.vue`, path.join(basePath, 'index.js')]
    if (!candidates.some((candidate) => fs.existsSync(candidate))) {
      fail(`${filePath} 导入不存在：${specifier}`)
    }
  }
}

const visualFiles = listFiles(
  ['App.vue', 'uni.scss', 'pages', 'components', 'styles'],
  new Set(['.vue', '.scss']),
)
const assetPattern = /["'(]((?:\/@?static\/|@\/static\/)[^"')\s]+)["')]/g
for (const filePath of visualFiles) {
  for (const match of readText(filePath).matchAll(assetPattern)) {
    const assetPath = match[1].replace(/^@?\//, '')
    if (!fs.existsSync(path.join(workspace, assetPath))) fail(`${filePath} 引用不存在的资源：${match[1]}`)
  }
}

let openApi = null
try {
  openApi = YAML.parse(readText('genealogy-app-openapi.yaml'))
} catch (error) {
  fail(`genealogy-app-openapi.yaml 无法解析：${error.message}`)
}
if (fs.existsSync(path.join(workspace, '家谱.openapi.json'))) {
  fail('检测到旧 OpenAPI：家谱.openapi.json；genealogy-app-openapi.yaml 必须是唯一所有者')
}

const normalizeEndpointPath = (endpointPath) => endpointPath
  .split('?')[0]
  .replace(/\$\{[^}]+\}/g, '{}')
  .replace(/\{[^}]+\}/g, '{}')
const documentedPaths = new Set(Object.keys(openApi?.paths || {}).map(normalizeEndpointPath))
const dynamicEndpointBuilders = new Set([
  '/genealogy/app/genealogies/{}/{}',
  '/genealogy/app/genealogies/{}/lineage/persons/{}/{}',
])
const apiFiles = listFiles(['services/api'], new Set(['.js']))
  .filter((filePath) => filePath.endsWith('-service.js') || filePath.endsWith('request-client.js'))
const endpointPattern = /([`'"])(\/(?:genealogy|captcha|auth)[\s\S]*?)\1/g
for (const filePath of apiFiles) {
  for (const match of readText(filePath).matchAll(endpointPattern)) {
    const endpoint = match[2]
    if (endpoint.includes('\n')) continue
    const normalizedPath = normalizeEndpointPath(endpoint)
    if (!documentedPaths.has(normalizedPath) && !dynamicEndpointBuilders.has(normalizedPath)) {
      fail(`${filePath} 使用了 OpenAPI 未声明的路径：${endpoint}`)
    }
  }
}

if (failures.length > 0) {
  console.error(`PROJECT CHECK FAILED (${failures.length})`)
  failures.forEach((message) => console.error(`- ${message}`))
  process.exit(1)
}

console.log(`PROJECT CHECK PASS pages=${configuredPages.length} routes=${routeKeys.length} sources=${sourceFiles.length}`)