#!/usr/bin/env node
/**
 * verify-models-render.cjs —— 「模型设置」分区（`poc/business-plugins/lib/client.js`）
 * 的**真渲染冒烟**：把 `ModelSettingsSection` 抠出来，用桩 React / jsxRuntime 跑一遍，
 * 覆盖「卡片行 / 添加提供方卡片 / 自定义提供方卡片 / 默认双按钮 / 删除确认弹窗」五个分支。
 *
 * 为什么需要（语法检查抓不到的东西）：
 *   `node --check` 只保证能解析；`verify-models-dict.mjs` 只保证词典齐全与版式锚点。
 *   但组件里还有一类**只在渲染时才炸**的错：未定义变量、jsxRuntime 用法错、
 *   访问了 `undefined.trim()` 之类。这类错在浏览器里表现为「整个设置页白屏」，
 *   而本仓库没有前端测试运行器。本脚本用最小桩把渲染跑通，把这类错拦在构建期。
 *
 * ⚠️ **维护约束**：桩 `useState` 按**调用序号**喂值（见 `STATE_MAP`）。若给组件新增/调换
 *   `useState`，请同步 `STATE_MAP`；脚本会先断言调用数量，数量不符时**明确报错**而不是静默测错。
 *
 * 用法：node scripts/verify-models-render.cjs     退出码 0=全绿 / 1=有失败
 */
const { readFileSync } = require('node:fs')
const { join, dirname } = require('node:path')

const ROOT = join(__dirname, '..')
const FILE = join(ROOT, 'poc', 'business-plugins', 'lib', 'client.js')
const src = readFileSync(FILE, 'utf8')

let failed = 0
const ok = (name, cond, extra = '') => {
  console.log((cond ? '  ✓ ' : '  ✗ ') + name + (extra ? '  ' + extra : ''))
  if (!cond) failed++
}

/** 从 `function <name>() {` 起按大括号配平截取函数源码（跳过字符串与注释）。 */
function extractFn(text, name) {
  const at = text.indexOf('function ' + name + '()')
  if (at < 0) return null
  const start = text.indexOf('{', at)
  let depth = 0
  let i = start
  while (i < text.length) {
    const c = text[i]
    if (c === '/' && text[i + 1] === '/') { while (i < text.length && text[i] !== '\n') i++; continue }
    if (c === '/' && text[i + 1] === '*') { i = text.indexOf('*/', i) + 2; continue }
    if (c === '"' || c === "'" || c === '`') {
      const q = c
      i++
      while (i < text.length && text[i] !== q) { if (text[i] === '\\') i++; i++ }
      i++
      continue
    }
    if (c === '{') depth++
    else if (c === '}') { depth--; if (depth === 0) return text.slice(at, i + 1) }
    i++
  }
  return null
}

const fnSrc = extractFn(src, 'ModelSettingsSection')
ok('取到 ModelSettingsSection 源码', fnSrc !== null)
if (fnSrc === null) process.exit(1)

/** 真词典（顺便验证键真的存在）。 */
function grabObj(text, name) {
  const at = text.indexOf('var ' + name + ' = {')
  const start = text.indexOf('{', at)
  let depth = 0
  for (let i = start; i < text.length; i++) {
    if (text[i] === '{') depth++
    else if (text[i] === '}') { depth--; if (depth === 0) return text.slice(start, i + 1) }
  }
  return null
}
const zh = eval('(' + grabObj(src, 'zh') + ')')

/**
 * 桩 `useState` 的**位置→语义**映射。顺序 = 组件里 `var x = useState(...)` 的先后。
 * 键是调用序号，值是「该序号在真实组件里是什么」——仅用于可读性，实际取值看 `over`。
 */
const STATE_MAP = [
  'data', 'providers', 'loading', 'busy', 'msg', 'mode',
  'fPick', 'fKey', 'fName', 'fRoute', 'fUrl', 'fApi', 'fModels', 'fShow', 'delTarget', 'catalog',
]

const mockedKeys = []
const FAKE_DATA = {
  keys: [
    { id: 1, name: '内置 DeepSeek', route: null, enabled: true, baseUrl: null, api: null },
    { id: 2, name: 'Moonshot', route: 'moonshot', enabled: false, baseUrl: null, api: null },
    { id: 3, name: '我的中转', route: 'my-gw', enabled: true, baseUrl: 'https://gw.example/v1', api: 'openai-completions' },
  ],
  shared: { available: true, name: '内置 DeepSeek', owner: 'admin', ownerIsMe: true, count: 1 },
  sharedModelEnabled: true,
  protocols: ['openai-completions', 'anthropic-messages'],
}
const FAKE_PROVIDERS = [
  { id: 'moonshot', label: '月之暗面', cn: true, modelCount: 3, models: ['kimi-k2', 'kimi-lite', 'kimi-pro'] },
  { id: 'openai', label: 'OpenAI', cn: false, modelCount: 2, models: ['gpt-5', 'gpt-5-mini'] },
]

function makeUseState(pass, counter) {
  return function useState(init) {
    const k = counter.i++
    const over = pass.over || {}
    // 未提供的字段回落到 init（而不是 undefined）—— 免得桩的疏漏被当成组件缺陷
    const v = Object.prototype.hasOwnProperty.call(over, k) && over[k] !== undefined ? over[k] : init
    return [v, function () {}]
  }
}

const React = { useState: null, useEffect: function () {} }
const jsxRuntime = {
  jsx: (type, props) => ({ type, props: props || {} }),
  jsxs: (type, props) => ({ type, props: props || {} }),
  Fragment: 'Fragment',
}
const t = (k) => {
  if (!(k in zh)) { mockedKeys.push(k); return '<' + k + '>' }
  return zh[k]
}
const noopReq = () => Promise.resolve({ ok: true, json: () => Promise.resolve({}) })
const MS_ERR = {}
const portalHost = () => ''

function render(pass) {
  const counter = { i: 0 }
  React.useState = makeUseState(pass, counter)
  const factory = new Function(
    'React', 'jsxRuntime', 't', 'paReq', 'papostJson', 'portalHost', 'MS_ERR',
    fnSrc + '\nreturn ModelSettingsSection;',
  )
  const tree = factory(React, jsxRuntime, t, noopReq, noopReq, portalHost, MS_ERR)()
  return { tree, calls: counter.i }
}

function walk(node, out) {
  if (node == null || typeof node !== 'object') return
  if (Array.isArray(node)) { for (const n of node) walk(n, out); return }
  const p = node.props || {}
  if (p.className) out.classes.push(String(p.className))
  if (typeof p.children === 'string') out.text.push(p.children)
  if (Array.isArray(p.children)) {
    for (const c of p.children) { if (typeof c === 'string') out.text.push(c); else walk(c, out) }
  } else if (p.children && typeof p.children === 'object') walk(p.children, out)
}

const BASE = { key: 'sk-abc', msg: '', over: {} }
const CASES = [
  ['默认态（两个虚线按钮）', { over: { 0: FAKE_DATA, 1: FAKE_PROVIDERS, 2: false, 3: false, 4: '', 5: '', 6: '', 7: BASE.key, 12: [''], 13: false, 14: null, 15: null } },
    ['ms-rows', 'ms-rowCard', 'ms-rowHead', 'ms-rowIdentity', 'ms-rowActions', 'ms-addActions', 'ms-addBtn']],
  ['添加提供方卡片', { over: { 0: FAKE_DATA, 1: FAKE_PROVIDERS, 2: false, 3: false, 4: '', 5: 'add', 6: 'moonshot', 7: BASE.key, 12: [''], 13: false, 14: null, 15: null } },
    ['ms-card', 'ms-field', 'ms-fieldLabel', 'ms-details', 'ms-summary', 'ms-editorActions']],
  ['自定义提供方卡片', { over: { 0: FAKE_DATA, 1: FAKE_PROVIDERS, 2: false, 3: false, 4: '', 5: 'custom', 6: '', 7: BASE.key, 8: '我的网关', 9: 'my-gw', 10: 'https://gw.example/v1', 11: 'openai-completions', 12: ['m1', ''], 13: false, 14: null, 15: null } },
    ['ms-modelList', 'ms-modelEntry', 'ms-modelRow', 'ms-iconBtn']],
  ['删除确认弹窗', { over: { 0: FAKE_DATA, 1: FAKE_PROVIDERS, 2: false, 3: false, 4: '', 5: '', 6: '', 7: BASE.key, 12: [''], 13: false, 14: FAKE_DATA.keys[1], 15: null } },
    ['pa-overlay', 'pa-modal', 'ms-editorActions']],
]

let sawCalls = 0
for (const [title, pass, expect] of CASES) {
  let tree, calls
  try {
    const r = render(pass)
    tree = r.tree
    calls = r.calls
  } catch (e) {
    console.log('  ✗ ' + title + ' → 抛异常: ' + e.message)
    failed++
    continue
  }
  sawCalls = calls
  const out = { classes: [], text: [] }
  walk(tree, out)
  const joined = out.classes.join(' | ')
  const miss = expect.filter((c) => joined.indexOf(c) < 0)
  const problems = []
  if (miss.length) problems.push('缺 class: ' + miss.join(', '))
  const unrendered = out.text.filter((s) => /^<ms\./.test(s))
  if (unrendered.length) problems.push('未渲染词典键: ' + unrendered.join(', '))
  if (problems.length) { console.log('  ✗ ' + title + ' → ' + problems.join(' ; ')); failed++ }
  else console.log('  ✓ ' + title + '  (class ' + out.classes.length + ' 个, 文本 ' + out.text.length + ' 段)')
}

ok('useState 调用数量与 STATE_MAP 对齐', sawCalls === STATE_MAP.length,
  sawCalls === STATE_MAP.length ? '-> ' + sawCalls : '-> 实测 ' + sawCalls + ' / 映射 ' + STATE_MAP.length + '（组件加了 state？请同步本脚本 STATE_MAP）')
ok('渲染期未出现缺词典键', mockedKeys.length === 0, mockedKeys.length ? '-> ' + [...new Set(mockedKeys)].join(', ') : '')

console.log(failed === 0 ? '\n渲染冒烟全部通过' : '\n' + failed + ' 项失败')
process.exit(failed === 0 ? 0 : 1)