const neteaseEnhancedApiPromise = import('@neteasecloudmusicapienhanced/api').then((mod) => {
  return (mod.default || {}) as Record<string, (params: Record<string, any>) => Promise<any>>
})

const normalizeParams = (input: Record<string, any>) => {
  const output: Record<string, any> = {}
  for (const [key, value] of Object.entries(input || {})) {
    if (value === undefined || value === null || value === '') {
      continue
    }
    output[key] = Array.isArray(value) ? value[value.length - 1] : value
  }
  return output
}

export default defineEventHandler(async (event) => {
  const rawPath = getRouterParam(event, 'path')
  const endpointPath = Array.isArray(rawPath) ? rawPath.join('/') : rawPath

  if (!endpointPath) {
    throw createError({
      statusCode: 400,
      message: '缺少网易云接口路径'
    })
  }

  const action = endpointPath.replace(/\//g, '_').replace(/-/g, '_')
  const api = await neteaseEnhancedApiPromise
  const handler = api[action]

  if (typeof handler !== 'function') {
    throw createError({
      statusCode: 404,
      message: `未找到接口: ${endpointPath}`
    })
  }

  const method = getMethod(event)
  const queryParams = normalizeParams(getQuery(event))
  let bodyParams: Record<string, any> = {}

  if (method !== 'GET') {
    const body = await readBody(event).catch(() => ({}))
    if (body && typeof body === 'object' && !Array.isArray(body)) {
      bodyParams = normalizeParams(body as Record<string, any>)
    }
  }

  const params = { ...queryParams, ...bodyParams }

  try {
    const result = await handler(params)
    if (Array.isArray(result?.cookie) && result.cookie.length > 0) {
      setHeader(event, 'set-cookie', result.cookie)
    }
    if (typeof result?.status === 'number') {
      setResponseStatus(event, result.status)
    }
    return result?.body ?? result
  } catch (error: any) {
    throw createError({
      statusCode: error?.statusCode || error?.status || 500,
      message: error?.body?.message || error?.message || '网易云接口调用失败',
      data: error?.body || null
    })
  }
})