import { defineConfig, mergeConfig } from "vite";
import { createBuildConfig } from "./vite.config.common.mts";
import { loadAppConfig } from "./vite.config.utils.mts";

export default defineConfig(async ({ mode }) => {
  console.log(`[VITE WEB CONFIG] Web config called with mode: ${mode}`);
  console.log(`[VITE WEB CONFIG] NODE_ENV: ${process.env.NODE_ENV}`);
  
  const baseConfig = await createBuildConfig('web');
  console.log(`[VITE WEB CONFIG] Base config loaded, plugins count: ${baseConfig.plugins?.length || 0}`);
  
  const appConfig = await loadAppConfig();

  // Environment-specific configuration based on mode
  const getEnvironmentConfig = (mode: string) => {
    switch (mode) {
      case 'production':
        return {
          // Production optimizations
          build: {
            minify: 'terser',
            sourcemap: false,
            rollupOptions: {
              output: {
                manualChunks: {
                  vendor: ['vue', 'vue-router', 'pinia'],
                  utils: ['luxon', 'ramda', 'zod'],
                  crypto: ['@ethersproject/wallet', '@ethersproject/hdnode', 'ethereum-cryptography'],
                  sql: ['@jlongster/sql.js', 'absurd-sql']
                }
              }
            }
          },
          define: {
            __DEV__: false,
            __TEST__: false,
            __PROD__: true
          }
        };
      case 'test':
        return {
          // Test environment configuration
          build: {
            minify: false,
            sourcemap: true,
            rollupOptions: {
              output: {
                manualChunks: undefined
              }
            }
          },
          define: {
            __DEV__: false,
            __TEST__: true,
            __PROD__: false
          }
        };
      default: // development
        return {
          // Development configuration
          build: {
            minify: false,
            sourcemap: true,
            rollupOptions: {
              output: {
                manualChunks: undefined
              }
            }
          },
          define: {
            __DEV__: true,
            __TEST__: false,
            __PROD__: false
          }
        };
    }
  };

  const environmentConfig = getEnvironmentConfig(mode);
  console.log(`[VITE WEB CONFIG] Environment config for mode ${mode}:`, Object.keys(environmentConfig));

  const finalConfig = mergeConfig(baseConfig, {
    ...environmentConfig,
    // Ensure source maps are enabled for development and test modes
    // This affects both dev server and build output
    sourcemap: mode === 'development' || mode === 'test',
    // Server configuration inherited from base config
    // CORS headers removed to allow images from any domain
    plugins: []
  });
  
  console.log(`[VITE WEB CONFIG] Final web config plugins:`, finalConfig.plugins?.map(p => typeof p === 'object' && p && 'name' in p ? p.name : 'unnamed').filter(Boolean));
  console.log(`[VITE WEB CONFIG] Final web config build settings:`, {
    minify: finalConfig.build?.minify,
    sourcemap: finalConfig.sourcemap,
    mode: finalConfig.mode
  });
  
  return finalConfig;
});