import fs from 'fs';
import tailwindcss from '@tailwindcss/vite';
import react from '@vitejs/plugin-react';
import path from 'path';
import {defineConfig, loadEnv} from 'vite';

export default defineConfig(({mode}) => {
  const env = loadEnv(mode, '.', '');
  const certPath = path.resolve(__dirname, '.cert/dev.crt');
  const keyPath = path.resolve(__dirname, '.cert/dev.key');
  const enableHttps = String(env.VITE_DEV_HTTPS || '').trim().toLowerCase() === 'true';
  const https =
    enableHttps && fs.existsSync(certPath) && fs.existsSync(keyPath)
      ? {
          cert: fs.readFileSync(certPath),
          key: fs.readFileSync(keyPath),
        }
      : undefined;
  return {
    plugins: [react(), tailwindcss()],
    define: {
      'process.env.GEMINI_API_KEY': JSON.stringify(env.GEMINI_API_KEY),
    },
    resolve: {
      alias: {
        '@': path.resolve(__dirname, './src'),
      },
    },
    server: {
      https,
      // HMR is disabled in AI Studio via DISABLE_HMR env var.
      // Do not modify—file watching is disabled to prevent flickering during agent edits.
      hmr: process.env.DISABLE_HMR !== 'true',
      proxy: {
        '/api': {
          target: 'http://localhost:8080',
          rewrite: (requestPath) =>
            requestPath.startsWith('/api/sys')
              ? requestPath.replace(/^\/api\/sys/, '/sys')
              : requestPath,
        },
      },
    },
  };
});