import { defineConfig } from 'vite'
import vue from '@vitejs/plugin-vue'
import fs from 'fs'
import path from 'path'
import type { Plugin } from 'vite'

// 配置文件路径
const CONFIG_FILE = path.resolve(__dirname, 'config.json')

// 自定义插件：处理配置文件的读写
function configApiPlugin(): Plugin {
  return {
    name: 'config-api',
    configureServer(server) {
      // 读取配置
      server.middlewares.use('/api/config', (req, res, next) => {
        if (req.method === 'GET') {
          try {
            if (fs.existsSync(CONFIG_FILE)) {
              const config = fs.readFileSync(CONFIG_FILE, 'utf-8')
              res.setHeader('Content-Type', 'application/json')
              res.end(config)
            } else {
              res.statusCode = 404
              res.end(JSON.stringify({ error: 'Config not found' }))
            }
          } catch (error) {
            res.statusCode = 500
            res.end(JSON.stringify({ error: 'Failed to read config' }))
          }
        } else if (req.method === 'POST') {
          let body = ''
          req.on('data', (chunk) => {
            body += chunk.toString()
          })
          req.on('end', () => {
            try {
              const config = JSON.parse(body)
              fs.writeFileSync(CONFIG_FILE, JSON.stringify(config, null, 2))
              res.setHeader('Content-Type', 'application/json')
              res.end(JSON.stringify({ success: true }))
            } catch (error) {
              res.statusCode = 500
              res.end(JSON.stringify({ error: 'Failed to save config' }))
            }
          })
        } else {
          next()
        }
      })
    }
  }
}

// https://vite.dev/config/
export default defineConfig({
  plugins: [vue(), configApiPlugin()],
})