// 远端服务配置（统一修改入口）
// 更换服务器时，仅需修改这里。

const SERVER_CONFIG = {
  protocol: 'https',
  host: 'fonts.biboer.cn',
  // 留空表示使用协议默认端口（https:443 / http:80）
  port: '',
  apiPrefix: '/api',
  fontsManifestPath: '/miniprogram/assets/fonts.json',
  defaultConfigPath: '/miniprogram/assets/default.json',
}

function buildOrigin() {
  const protocol = String(SERVER_CONFIG.protocol || 'https').replace(/:$/, '')
  const host = String(SERVER_CONFIG.host || '').trim()
  const port = String(SERVER_CONFIG.port || '').trim()

  if (!host) {
    throw new Error('SERVER_CONFIG.host 未配置')
  }

  const hasDefaultPort = (protocol === 'https' && port === '443') || (protocol === 'http' && port === '80')
  const portPart = !port || hasDefaultPort ? '' : `:${port}`
  return `${protocol}://${host}${portPart}`
}

function normalizePath(path, fallback) {
  const value = String(path || fallback || '').trim()
  if (!value) {
    return '/'
  }
  return value.startsWith('/') ? value : `/${value}`
}

function buildRuntimeConfig() {
  const origin = buildOrigin()
  const apiPrefix = normalizePath(SERVER_CONFIG.apiPrefix, '/api').replace(/\/$/, '')
  const fontsManifestPath = normalizePath(SERVER_CONFIG.fontsManifestPath, '/miniprogram/assets/fonts.json')
  const defaultConfigPath = normalizePath(SERVER_CONFIG.defaultConfigPath, '/miniprogram/assets/default.json')

  return {
    fontsBaseUrl: origin,
    fontsManifestUrl: `${origin}${fontsManifestPath}`,
    defaultConfigUrl: `${origin}${defaultConfigPath}`,
    svgRenderApiUrl: `${origin}${apiPrefix}/render-svg`,
    pngRenderApiUrl: `${origin}${apiPrefix}/render-png`,
  }
}

module.exports = {
  SERVER_CONFIG,
  buildRuntimeConfig,
}