import path from 'path';
import commonjs from 'vite-plugin-commonjs'
import {
    defineConfig, loadEnv
} from 'vite'
import uni from '@dcloudio/vite-plugin-uni'
import pkg from './package.json'
// https://vitejs.dev/config/

// FRP 内网穿透绕过中间件
// FRP 默认拦截 URL 中包含 /node_modules/ 的请求返回 404
// 此中间件：
//   1. 将响应内容中的 /node_modules/ 替换为 /__deps__/（浏览器请求时避开 FRP 拦截）
//   2. 将传入请求中的 /__deps__/ 还原为 /node_modules/（Vite 才能正确处理）
function frpBypassMiddleware() {
  return {
    name: 'frp-bypass',
    configureServer(server) {
      server.middlewares.use((req, res, next) => {
        // 重写传入请求：/__deps__/ → /node_modules/
        if (req.url && req.url.includes('/__deps__/')) {
          req.url = req.url.replace(/\/__deps__\//g, '/node_modules/')
        }

        // 拦截传出响应，将 /node_modules/ 替换为 /__deps__/
        const origEnd = res.end
        const chunks = []

        res.write = function (chunk, ...args) {
          if (chunk != null) {
            chunks.push(typeof chunk === 'string' ? Buffer.from(chunk) : chunk)
          }
          return true
        }

        res.end = function (chunk, ...args) {
          if (chunk != null) {
            chunks.push(typeof chunk === 'string' ? Buffer.from(chunk) : chunk)
          }

          if (chunks.length === 0) {
            return origEnd.apply(res, arguments)
          }

          const fullBody = Buffer.concat(chunks)
          const ct = String(res.getHeader('content-type') || '')

          // 仅对文本类型响应进行替换
          if (/text|javascript|json|xml|css/.test(ct)) {
            const bodyStr = fullBody.toString('utf-8')
            if (bodyStr.includes('/node_modules/')) {
              const replaced = bodyStr.replace(/\/node_modules\//g, '/__deps__/')
              res.setHeader('content-length', String(Buffer.byteLength(replaced, 'utf-8')))
              return origEnd.call(res, replaced, ...args)
            }
            return origEnd.call(res, bodyStr, ...args)
          }

          // 非文本类型直接透传
          return origEnd.call(res, fullBody, ...args)
        }

        next()
      })
    },
  }
}

export default defineConfig(({ mode }) => {
    // 根据当前 mode 加载对应 .env 文件中的环境变量
    const env = loadEnv(mode, process.cwd(), 'VITE_')
    const apiTarget = env.VITE_APP_HOST || ''

    // 自定义 mode 列表，构建时追加到 outDir 末尾
    const customModes = ['', 'csxg', 'xnet', 'qyyst', 'qycrg']
    if (customModes.includes(mode)) {
        // 必须在 uni() 插件之前设置，这样 static/uni_modules 复制才会进子目录
        process.env.UNI_OUTPUT_DIR = `dist/build/h5/${mode}/ABC_${mode}_patientapp_${pkg.version}`
    } else {
        process.env.UNI_OUTPUT_DIR = `dist/build/h5/ABC_patientapp_${pkg.version}`
    }

    // 从环境变量获取输出目录（uni-app CLI 已经设置好）
    const outDir = process.env.UNI_OUTPUT_DIR

    return {
        build: {
            outDir,
        },
        plugins: [
            uni(),
            commonjs(),
            // frpBypassMiddleware(), // FRP内网穿透绕过，非FRP环境可注释
            // 强制覆盖 uni-app 设置的 build.outDir，确保 assets/index.html 也进 patientapp
            {
                name: 'force-outdir',
                enforce: 'post',
                config(config) {
                    config.build = config.build || {};
                    config.build.outDir = outDir;
                }
            },
        ],
        css: {
            preprocessorOptions: {
                scss: {
                    api: 'modern-compiler' // 使用新的现代编译器API，避免旧版JS API弃用警告
                }
            }
        },
        resolve: {
            alias: {
                '@vue/shared': '@vue/shared/dist/shared.esm-bundler.js',
                '@': 'src',
                'jweixin-module': path.resolve(__dirname, 'src/js_sdk/jweixin-module/index.js')
            }
        },
        server: {
            host: '0.0.0.0',
            allowedHosts: [
                'frp.12123wzcx.com', // 允许所有 frp.12123wzcx.com 的子域名
            ],
            proxy: {
                '/wechatbdhealth': {
                    target: apiTarget,
                    changeOrigin: true,
                    rewrite: (path) => path.replace('/wechatbdhealth', '/wechatbdhealth')
                },
                '/patientapp/images': {
                    target: apiTarget,
                    changeOrigin: true,
                    rewrite: (path) => path.replace('/patientapp/images', '/images')
                },
                '/uploadFile': {
                    target: apiTarget,
                    changeOrigin: true,
                    rewrite: (path) => path.replace('/uploadFile', '/uploadFile')
                },
                '/images': {
                    target: apiTarget,
                    changeOrigin: true,
                    rewrite: (path) => path.replace('/images', '/images')
                },
                // '/MP_verify_mRdA5h8p5Phywrus.txt': {
                // 	target: 'http://localhost:81',
                // 	changeOrigin: true,
                // 	rewrite: (path) => path.replace('/MP_verify_mRdA5h8p5Phywrus.txt', '/MP_verify_mRdA5h8p5Phywrus.txt')
                // },
                '/ws/': {
                    target: 'https://apis.map.qq.com',
                    changeOrigin: true,
                    rewrite: (path) => path.replace('/ws/', '/ws/')
                },
                '/fileUp/': {
                    target: 'https://np.h03.p0551.com',
                    changeOrigin: true,
                    rewrite: (path) => path.replace('/fileUp/', '')
                },
                '/pingd': {
                    target: 'https://pingtas.qq.com',
                    changeOrigin: true,
                },

            }
        },
    }
})