/**
 * 版权所有，内部使用。
 *
 * @description 初始化教学大纲使用的课类型字典，可重复执行且不会重复插入。
 * @author 软件研发部
 * @since 2026-08-25
 */

const DICT_TYPE = 'course_type'
const DICT_NAME = '课类型'
const DEFAULT_API_BASE_URL = 'http://localhost/api'
const DEFAULT_ADMIN_USERNAME = 'admin'
const DICT_ITEMS = [
  { label: '必修', value: '必修' },
  { label: '选修', value: '选修' },
  { label: '实践', value: '实践' }
]

let authToken = ''

function readHiddenInput(prompt) {
  if (!process.stdin.isTTY || !process.stdin.setRawMode) {
    throw new Error('当前终端不支持隐藏输入，请在 PowerShell 中直接运行该脚本')
  }

  return new Promise((resolve, reject) => {
    let input = ''

    function cleanup() {
      process.stdin.removeListener('data', handleInput)
      process.stdin.setRawMode(false)
      process.stdin.pause()
      process.stdout.write('\n')
    }

    function handleInput(characters) {
      for (const character of characters) {
        if (character === '\u0003') {
          cleanup()
          reject(new Error('用户取消执行'))
          return
        }
        if (character === '\r' || character === '\n') {
          cleanup()
          resolve(input)
          return
        }
        if (character === '\u0008' || character === '\u007f') {
          input = input.slice(0, -1)
          continue
        }
        if (character >= ' ') {
          input += character
        }
      }
    }

    process.stdout.write(prompt)
    process.stdin.setEncoding('utf8')
    process.stdin.setRawMode(true)
    process.stdin.resume()
    process.stdin.on('data', handleInput)
  })
}

async function authenticate() {
  const environmentToken = process.env.EDUCATION_API_TOKEN
  if (environmentToken) {
    authToken = environmentToken.replace(/^Bearer\s+/i, '')
    return
  }

  const username = process.env.EDUCATION_ADMIN_USERNAME || DEFAULT_ADMIN_USERNAME
  let password = await readHiddenInput(`请输入管理员 ${username} 的密码：`)
  const response = await fetch(getApiBaseUrl() + '/login', {
    method: 'POST',
    headers: { 'Content-Type': 'application/json;charset=utf-8' },
    body: JSON.stringify({ username, password, code: '', uuid: '' })
  })
  password = ''
  const result = await response.json()

  if (!response.ok || result.code !== 200 || !result.token) {
    throw new Error(result.msg || `登录失败：HTTP ${response.status}`)
  }

  authToken = result.token
}

function getApiBaseUrl() {
  const configuredUrl = process.env.EDUCATION_API_BASE_URL || DEFAULT_API_BASE_URL

  return configuredUrl.replace(/\/+$/, '')
}

async function request(path, options = {}) {
  if (!authToken) {
    throw new Error('尚未完成管理员认证')
  }

  const response = await fetch(getApiBaseUrl() + path, {
    ...options,
    headers: {
      Authorization: 'Bearer ' + authToken,
      'Content-Type': 'application/json;charset=utf-8',
      ...(options.headers || {})
    }
  })
  const result = await response.json()

  if (!response.ok || result.code !== 200) {
    throw new Error(result.msg || `请求失败：HTTP ${response.status}`)
  }

  return result
}

async function ensureDictType() {
  const query = new URLSearchParams({
    pageNum: '1',
    pageSize: '10',
    dictType: DICT_TYPE
  })
  const result = await request('/system/dict/type/list?' + query.toString())
  const hasDictType = (result.rows || []).some(item => item.dictType === DICT_TYPE)

  if (hasDictType) {
    console.log(`字典类型 ${DICT_TYPE} 已存在，跳过新增`)
    return
  }

  await request('/system/dict/type', {
    method: 'POST',
    body: JSON.stringify({
      dictName: DICT_NAME,
      dictType: DICT_TYPE,
      status: '0',
      remark: '教学大纲课类型列表'
    })
  })
  console.log(`已新增字典类型 ${DICT_TYPE}`)
}

async function ensureDictItems() {
  const query = new URLSearchParams({
    pageNum: '1',
    pageSize: '100',
    dictType: DICT_TYPE
  })
  const result = await request('/system/dict/data/list?' + query.toString())
  const existingValues = new Set((result.rows || []).map(item => item.dictValue))

  for (const [index, item] of DICT_ITEMS.entries()) {
    if (existingValues.has(item.value)) {
      console.log(`字典项 ${item.label} 已存在，跳过新增`)
      continue
    }

    await request('/system/dict/data', {
      method: 'POST',
      body: JSON.stringify({
        dictSort: index + 1,
        dictLabel: item.label,
        dictValue: item.value,
        dictType: DICT_TYPE,
        cssClass: '',
        listClass: 'default',
        isDefault: 'N',
        status: '0',
        remark: '教学大纲课类型'
      })
    })
    console.log(`已新增字典项 ${item.label}`)
  }
}

async function refreshDictCache() {
  await request('/system/dict/type/refreshCache', { method: 'DELETE' })
  console.log('字典缓存已刷新')
}

async function main() {
  await authenticate()
  await ensureDictType()
  await ensureDictItems()
  await refreshDictCache()
  console.log('课类型字典初始化完成')
}

main().catch(error => {
  console.error('课类型字典初始化失败：' + error.message)
  process.exitCode = 1
})