import test from 'node:test'
import assert from 'node:assert/strict'
import { existsSync } from 'node:fs'
import { join } from 'node:path'
import { readSource, occurrences } from './helpers.ts'
import { adminPages } from '../src/router/routes.ts'

const ROUTER = 'src/router/index.ts'
const NOT_FOUND = 'src/pages/error/NotFoundPage.vue'

test('test_task_012_route_error_page_normal_primary_path', () => {
  // 正常主路径：未知路径注册到路由级错误页兜底。
  const router = readSource(ROUTER)
  assert.match(router, /path:\s*':pathMatch\(\.\*\)\*'/)
  assert.match(router, /NotFoundPage/)
  assert.match(router, /页面不存在/)
})

test('test_task_012_route_error_page_normal_variant_input', () => {
  // 正常变体：错误页在 AdminLayout children 内，保留壳层 chrome。
  const router = readSource(ROUTER)
  const catchAllIndex = router.indexOf(':pathMatch(.*)*')
  const registryIndex = router.indexOf('adminRouteRecords.map')
  assert.ok(catchAllIndex > registryIndex, 'catch-all 应在业务路由之后注册')
  assert.match(router, /path: '\/',/)
})

test('test_task_012_route_error_page_normal_repeated_operation_is_idempotent', () => {
  // 正常重复：错误页注册不重复追加。
  const first = readSource(ROUTER)
  assert.equal(occurrences(first, ':pathMatch(.*)*'), 1)
})

test('test_task_012_route_error_page_boundary_empty_input', () => {
  // 边界空值：错误页文件存在，且不进入业务路由注册表。
  assert.equal(existsSync(join(process.cwd(), NOT_FOUND)), true)
  // 业务路由条目与页面定义一一对应；错误页不占用其中任何一条。
  const router = readSource(ROUTER)
  assert.equal(occurrences(router, '...adminRouteRecords'), 1, '错误页不应计入业务路由')
  assert.ok(adminPages.length >= 18, '业务页至少 18（随版本递增，不设上限断言）')
})

test('test_task_012_route_error_page_boundary_single_item', () => {
  // 边界单元素：错误页是单一 Vue 页面组件。
  const source = readSource(NOT_FOUND)
  assert.equal(occurrences(source, '<template>'), 1)
  assert.match(source, /el-result/)
})

test('test_task_012_route_error_page_boundary_limit_or_missing_field', () => {
  // 边界上限：catch-all 不参与菜单权限门禁（无 menuKey）。
  const router = readSource(ROUTER)
  const tail = router.slice(router.indexOf('component: NotFoundPage'))
  assert.equal(tail.slice(0, 80).includes('menuKey'), false, '错误页不应带菜单 key')
})

test('test_task_012_route_error_page_invalid_input_rejected', () => {
  // 异常输入：深层未知路径也能被通配兜底，且提供返回首页动作。
  const router = readSource(ROUTER)
  assert.match(router, /:pathMatch\(\.\*\)\*/, '通配需覆盖多段未知路径')
  const page = readSource(NOT_FOUND)
  assert.match(page, /router\.replace\('\/'\)/)
})

test('test_task_012_route_error_page_dependency_failure_returns_actionable_message', () => {
  // 依赖失败：标题/样式/返回动作齐全，加载失败有明确入口。
  const page = readSource(NOT_FOUND)
  assert.match(page, /返回首页/)
  assert.match(page, /404/)
  const css = readSource('src/styles/main.css')
  assert.match(css, /\.not-found/)
  const router = readSource(ROUTER)
  assert.match(router, /meta: \{ title: '页面不存在' \}/)
})