import { defineConfig, loadEnv } from 'vite';
import vue from '@vitejs/plugin-vue';
import ViteCompression from 'vite-plugin-compression';
import ViteComponents from 'unplugin-vue-components/vite';
import { AntDesignVueResolver } from 'unplugin-vue-components/resolvers';
import { EleAdminResolver } from 'ele-admin-pro/lib/utils/resolvers';
import { DynamicAntdLess } from 'ele-admin-pro/lib/utils/dynamic-theme';
import { resolve } from 'path';
import { visualizer } from 'rollup-plugin-visualizer';
import { splitVendorChunkPlugin } from 'vite';

// 简化的智能端口管理（避免构建时模块解析问题）
function getSmartPort() {
  try {
    // 从环境变量获取基础配置
    const basePort = parseInt(process.env.VITE_BASE_PORT || '3000');
    const tenantId = process.env.VITE_TENANT_ID || '10258';
    const environment = process.env.NODE_ENV || 'development';

    // 简化的端口计算
    let recommendedPort = basePort;

    if (environment === 'development') {
      // 开发环境：基础端口 + 租户偏移
      const tenantOffset = (parseInt(tenantId) % 1000) * 10;
      recommendedPort = basePort + tenantOffset;
    } else if (environment === 'test') {
      recommendedPort = basePort + 1000;
    } else if (environment === 'production') {
      recommendedPort = 8080; // 生产环境使用标准端口
    }

    console.log('🎯 智能端口计算:', {
      environment,
      tenantId,
      basePort,
      recommendedPort
    });

    return recommendedPort;
  } catch (error) {
    console.warn('⚠️ 端口计算失败，使用默认端口 3000:', error);
    return 3000;
  }
}

export default defineConfig(({ command, mode }) => {
  // Load env for Vite config usage (including non-VITE_ keys like AI_API_KEY).
  const env = loadEnv(mode, process.cwd(), '');
  const isBuild = command === 'build';

  // 智能端口配置（仅在开发模式下）
  const smartPort = !isBuild ? getSmartPort() : undefined;

  return {
    // 在这里增加 base 写子路径
    base: '/',
    resolve: {
      alias: {
        '@/': resolve('src') + '/',
        'vue-i18n': 'vue-i18n/dist/vue-i18n.cjs.js'
      }
    },
    // 智能服务器配置
    server: {
      port: smartPort || 3000,
      host: '0.0.0.0', // 允许外部访问
      open: true, // 自动打开浏览器
      cors: true, // 启用 CORS
      // 代理配置
      proxy: {
        '/api': {
          target:
            env.VITE_API_URL ||
            process.env.VITE_API_URL ||
            'https://server.websoft.top',
          changeOrigin: true,
          secure: false,
          configure: (proxy, _options) => {
            proxy.on('error', (err, _req, _res) => {
              console.log('proxy error', err);
            });
            proxy.on('proxyReq', (proxyReq, req, _res) => {
              console.log(
                'Sending Request to the Target:',
                req.method,
                req.url
              );
            });
            proxy.on('proxyRes', (proxyRes, req, _res) => {
              console.log(
                'Received Response from the Target:',
                proxyRes.statusCode,
                req.url
              );
            });
          }
        },
        // OpenAI-compatible gateway reverse proxy (dev only).
        // Example:
        //   GET  /ai-proxy/models          -> https://ai.websoft.top/api/v1/models
        //   POST /ai-proxy/chat/completions -> https://ai.websoft.top/api/v1/chat/completions
        '/ai-proxy': {
          target: env.AI_PROXY_TARGET || 'https://ai-api.websoft.top',
          changeOrigin: true,
          secure: false,
          rewrite: (path) =>
            path.replace(
              /^\/ai-proxy/,
              env.AI_PROXY_REWRITE_PREFIX || '/api/v1'
            ),
          configure: (proxy) => {
            proxy.on('proxyReq', (proxyReq) => {
              // Inject auth for local dev to avoid putting API keys in the browser.
              const key = env.AI_API_KEY || process.env.AI_API_KEY;
              if (key && !proxyReq.getHeader('Authorization')) {
                const trimmed = String(key).trim();
                const value = /^bearer\\s+/i.test(trimmed)
                  ? trimmed
                  : `Bearer ${trimmed}`;
                proxyReq.setHeader('Authorization', value);
              }
            });
          }
        },
        // Ollama native API reverse proxy (dev only).
        //   GET  /proxy/api/tags -> http://47.119.165.234:11434/api/tags
        //   POST /proxy/api/chat -> http://47.119.165.234:11434/api/chat
        '/proxy': {
          target: 'http://47.119.165.234:11434',
          changeOrigin: true,
          secure: false,
          rewrite: (path) => path.replace(/^\/proxy/, '')
        }
      },
      // 端口冲突时的处理
      strictPort: false // 允许自动选择其他端口
    },
    // 预览服务器配置（用于生产构建预览）
    preview: {
      port: smartPort ? smartPort + 1000 : 4173,
      host: '0.0.0.0',
      open: true,
      cors: true,
      strictPort: false
    },
    plugins: [
      vue({
        script: {
          defineModel: true,
          propsDestructure: true
        }
      }),
      // 组件按需引入
      ViteComponents({
        dts: false,
        resolvers: [
          AntDesignVueResolver({
            importStyle: isBuild ? 'less' : false
          }),
          EleAdminResolver({
            importStyle: isBuild ? 'less' : false
          })
        ],
        directoryAsNamespace: true
      }),
      // 代码分割
      splitVendorChunkPlugin(),
      // gzip 压缩
      ViteCompression({
        disable: !isBuild,
        threshold: 10240,
        algorithm: 'gzip',
        ext: '.gz'
      }),
      // brotli 压缩
      ViteCompression({
        disable: !isBuild,
        threshold: 10240,
        algorithm: 'brotliCompress',
        ext: '.br'
      }),
      // 打包分析
      isBuild &&
        visualizer({
          filename: 'dist/stats.html',
          open: false,
          gzipSize: true,
          brotliSize: true
        })
    ].filter(Boolean),
    css: {
      preprocessorOptions: {
        less: {
          javascriptEnabled: true,
          plugins: [new DynamicAntdLess()],
          modifyVars: {
            // 组件样式开发环境全局引入生产环境按需引入
            'style-entry-file': isBuild ? 'as-needed' : 'global-import'
          }
        }
      }
    },
    optimizeDeps: {
      include: [
        'sortablejs',
        'vuedraggable',
        'echarts/core',
        'echarts/charts',
        'echarts/renderers',
        'echarts/components',
        'vue-echarts',
        'echarts-wordcloud',
        'xlsx',
        'lodash-es',
        'dayjs',
        'crypto-js',
        'js-md5',
        'qrcode',
        'nprogress'
      ],
      exclude: ['@iconify/json']
    },
    build: {
      target: 'es2015',
      cssCodeSplit: true,
      chunkSizeWarningLimit: 1000,
      rollupOptions: {
        output: {
          // 手动分包
          manualChunks: {
            // Vue 生态
            'vue-vendor': ['vue', 'vue-router', 'pinia'],
            // UI 组件库
            'ui-vendor': ['ant-design-vue', 'ele-admin-pro'],
            // 工具库
            'utils-vendor': ['lodash-es', 'dayjs', 'crypto-js', 'js-md5'],
            // 图表库
            'charts-vendor': ['echarts', 'vue-echarts', 'echarts-wordcloud'],
            // 编辑器
            'editor-vendor': ['tinymce', 'bytemd', 'md-editor-v3'],
            // 文件处理
            'file-vendor': ['xlsx', 'exceljs', 'file-saver', 'ali-oss']
          },
          // 文件命名
          chunkFileNames: (chunkInfo) => {
            const facadeModuleId = chunkInfo.facadeModuleId
              ? chunkInfo.facadeModuleId
                  .split('/')
                  .pop()
                  .replace(/\.\w+$/, '')
              : 'chunk';
            return `js/${facadeModuleId}-[hash].js`;
          },
          assetFileNames: (assetInfo) => {
            const info = assetInfo.name.split('.');
            const ext = info[info.length - 1];
            if (
              /\.(mp4|webm|ogg|mp3|wav|flac|aac)(\?.*)?$/i.test(assetInfo.name)
            ) {
              return `media/[name]-[hash].${ext}`;
            }
            if (/\.(png|jpe?g|gif|svg)(\?.*)?$/.test(assetInfo.name)) {
              return `images/[name]-[hash].${ext}`;
            }
            if (/\.(woff2?|eot|ttf|otf)(\?.*)?$/i.test(assetInfo.name)) {
              return `fonts/[name]-[hash].${ext}`;
            }
            return `assets/[name]-[hash].${ext}`;
          }
        }
      },
      // 压缩配置
      minify: 'terser',
      terserOptions: {
        compress: {
          drop_console: true,
          drop_debugger: true,
          pure_funcs: ['console.log']
        }
      }
    }
  };
});