import { defineConfig } 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 { resolve } from 'path';
import { visualizer } from 'rollup-plugin-visualizer';

/**
 * AntDv4 兼容：替换 ele-admin-pro Less 中的 colorPalette JS 调用
 * AntDv4 移除了 Less 的 colorPalette 函数，ele-admin-pro 的 common.less
 * 中有 ~`colorPalette('@{primary-color}', 5)` 等 JS 表达式，
 * 此插件在 Less 编译前将其替换为硬编码的颜色值。
 */
function colorPaletteReplacer() {
  return {
    name: 'color-palette-replacer',
    enforce: 'pre',
    async transform(code, id) {
      if (!id.includes('ele-admin-pro') || !id.endsWith('.less')) {
        return null;
      }
      console.log('🎨 Processing Less file:', id);
      let result = code;
      result = result.replace(/~`colorPalette\('@\{primary-color\}',\s*(\d+)\)\s*`/g, (_match, idx) => {
        const colors = { 1: '#e6f4ff', 2: '#bae0ff', 3: '#91caff', 4: '#69b1ff', 5: '#4096ff', 6: '#1677ff', 7: '#0958d9', 8: '#003eb3', 9: '#002c8c', 10: '#001d66' };
        return colors[idx] || '#1677ff';
      });
      result = result.replace(/~`colorPalette\('@\{success-color\}',\s*(\d+)\)\s*`/g, (_match, idx) => {
        const colors = { 1: '#f6ffed', 2: '#d9f7be', 3: '#b7eb8f', 4: '#95de64', 5: '#73d13d', 6: '#52c41a', 7: '#389e0d', 8: '#237804', 9: '#135200', 10: '#092b00' };
        return colors[idx] || '#52c41a';
      });
      result = result.replace(/~`colorPalette\('@\{warning-color\}',\s*(\d+)\)\s*`/g, (_match, idx) => {
        const colors = { 1: '#fffbe6', 2: '#fff1b8', 3: '#ffe58f', 4: '#ffd666', 5: '#ffc53d', 6: '#faad14', 7: '#d48806', 8: '#ad6800', 9: '#874d00', 10: '#612500' };
        return colors[idx] || '#faad14';
      });
      result = result.replace(/~`colorPalette\('@\{error-color\}',\s*(\d+)\)\s*`/g, (_match, idx) => {
        const colors = { 1: '#fff2f0', 2: '#ffccc7', 3: '#ffa39e', 4: '#ff7875', 5: '#ff4d4f', 6: '#f5222d', 7: '#cf1322', 8: '#a8071a', 9: '#820014', 10: '#5c0011' };
        return colors[idx] || '#ff4d4f';
      });
      if (result !== code) {
        console.log('✅ Replaced colorPalette in:', id);
      }
      return result !== code ? result : null;
    }
  };
}

/**
 * AntDv4 兼容：将 ele-admin-pro 引用的 AntDv3 样式模块重定向到空模块
 * AntDv4 使用 CSS-in-JS，不再有 es/xxx/style 目录
 */
function antdStyleRedirect() {
  const emptyModule = resolve('src/styles/antd-less-stub/empty-style.js');
  return {
    name: 'antd-style-redirect',
    enforce: 'pre',
    resolveId(source) {
      if (source.startsWith('ant-design-vue/es/') && source.endsWith('/style')) {
        return emptyModule;
      }
      return null;
    }
  };
}

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

    let recommendedPort = basePort;

    if (environment === 'development') {
      const tenantOffset = (parseInt(tenantId) % 1000) * 10;
      recommendedPort = basePort + tenantOffset;
    } else if (environment === 'test') {
      recommendedPort = basePort + 1000;
    } else if (environment === 'production') {
      recommendedPort = 8080;
    }

    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 }) => {
  const isBuild = command === 'build';
  const smartPort = !isBuild ? getSmartPort() : undefined;

  return {
    base: '/',
    resolve: {
      alias: {
        '@/': resolve('src') + '/',
        'vue-i18n': 'vue-i18n/dist/vue-i18n.cjs.js',
        // AntDv4 兼容层：将 ele-admin-pro 引用的 AntD Less 主题文件重定向到 stub
        'ant-design-vue/es/style/themes/default.less': resolve('src/styles/antd-less-stub/default.less'),
        'ant-design-vue/es/style/themes/dark.less': resolve('src/styles/antd-less-stub/dark.less')
      }
    },
    server: {
      port: smartPort || 3000,
      host: '0.0.0.0',
      open: true,
      proxy: {
        '/api': {
          target: 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);
            });
          },
        }
      },
      strictPort: false,
    },
    preview: {
      port: smartPort ? smartPort + 1000 : 4173,
      host: '0.0.0.0',
      open: true,
      strictPort: false,
    },
    plugins: [
      colorPaletteReplacer(),
      antdStyleRedirect(),
      vue({
        script: {
          defineModel: true,
          propsDestructure: true
        }
      }),
      ViteComponents({
        dts: false,
        resolvers: [
          AntDesignVueResolver({
            importStyle: false  // AntDv4 使用 CSS-in-JS，无需 Less 导入
          }),
          EleAdminResolver({
            importStyle: isBuild ? 'less' : false
          })
        ],
        directoryAsNamespace: true
      }),
      ViteCompression({
        disable: !isBuild,
        threshold: 10240,
        algorithm: 'gzip',
        ext: '.gz'
      }),
      ViteCompression({
        disable: !isBuild,
        threshold: 10240,
        algorithm: 'brotliCompress',
        ext: '.br'
      }),
      isBuild && visualizer({
        filename: 'dist/stats.html',
        open: false,
        gzipSize: true,
        brotliSize: true
      })
    ].filter(Boolean),
    css: {
      preprocessorOptions: {
        less: {
          javascriptEnabled: true,
          modifyVars: {
            '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', 'tinymce']
    },
    build: {
      target: 'es2015',
      cssCodeSplit: true,
      chunkSizeWarningLimit: 1000,
      rollupOptions: {
        output: {
          manualChunks(id) {
            if (!id.includes('node_modules')) return undefined;
            if (id.includes('/vue-router/') || id.includes('/pinia/') || id.includes('/vue/')) {
              return 'vue-vendor';
            }
            if (id.includes('/ant-design-vue/') || id.includes('/ele-admin-pro/')) {
              return 'ui-vendor';
            }
            if (id.includes('/lodash-es/') || id.includes('/dayjs/') || id.includes('/crypto-js/') || id.includes('/js-md5/')) {
              return 'utils-vendor';
            }
            if (id.includes('/echarts/') || id.includes('/vue-echarts/') || id.includes('/echarts-wordcloud/')) {
              return 'charts-vendor';
            }
            if (id.includes('/tinymce/') || id.includes('/bytemd/') || id.includes('/md-editor-v3/')) {
              return 'editor-vendor';
            }
            if (id.includes('/xlsx/') || id.includes('/exceljs/') || id.includes('/file-saver/') || id.includes('/ali-oss/')) {
              return 'file-vendor';
            }
            return undefined;
          },
          chunkFileNames: (chunkInfo) => {
            const name = chunkInfo.facadeModuleId
              ? chunkInfo.facadeModuleId.split('/').pop().replace(/\.\w+$/, '')
              : 'chunk';
            return `js/${name}-[hash].js`;
          },
          assetFileNames: (assetInfo) => {
            const name = (assetInfo.name || '').split('/').pop();
            if (/\.(mp4|webm|ogg|mp3|wav|flac|aac)(\?.*)?$/i.test(name)) {
              return `media/[hash].[ext]`;
            }
            if (/\.(png|jpe?g|gif|svg)(\?.*)?$/.test(name)) {
              return `images/[hash].[ext]`;
            }
            if (/\.(woff2?|eot|ttf|otf)(\?.*)?$/i.test(name)) {
              return `fonts/[hash].[ext]`;
            }
            return `assets/[hash].[ext]`;
          }
        }
      },
      minify: 'terser',
      terserOptions: {
        compress: {
          drop_console: true,
          drop_debugger: true,
          pure_funcs: ['console.log']
        }
      }
    }
  };
});