import path from 'node:path';

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

export default defineConfig(({mode}) => {
  const env = loadEnv(mode, __dirname, '');
  const ignoredWatchGlobs = [
    '**/dist/**',
    '**/dist_check/**',
    '**/dist_check_final/**',
    '**/dist_check_monster_position/**',
    '**/temp*build*/**',
    '**/public/generated-character-drafts/**',
    '**/public/generated-characters/**',
    '**/public/generated-custom-world-scenes/**',
    '**/public/generated-qwen-sprites/**',
    '**/backend-rewrite-tasklist/**',
    '**/docs/**',
    '**/jenkins/**',
    '**/media/**',
    '**/scripts/**',
    '**/server-rs/**',
    '**/*.test.ts',
    '**/*.test.tsx',
    '**/*.spec.ts',
    '**/*.spec.tsx',
  ];
  const rustServerTarget =
    env.RUST_SERVER_TARGET ||
    env.GENARRATIVE_API_TARGET ||
    `http://127.0.0.1:${env.GENARRATIVE_API_PORT || '3100'}`;
  const runtimeServerTarget =
    env.GENARRATIVE_RUNTIME_SERVER_TARGET || rustServerTarget;

  return {
    root: __dirname,
    envDir: __dirname,
    plugins: [
      react(),
      tailwindcss(),
    ],
    define: {
      'process.env.GEMINI_API_KEY': JSON.stringify(env.GEMINI_API_KEY),
    },
    resolve: {
      alias: {
        '@': path.resolve(__dirname, '.'),
      },
    },
    optimizeDeps: {
      // Only crawl the real app entry so temporary build folders do not get
      // treated as extra HTML entrypoints during dependency scanning.
      entries: ['index.html'],
    },
    build: {
      chunkSizeWarningLimit: 800,
    },
    server: {
      // 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: {
        '/generated-character-drafts': {
          target: runtimeServerTarget,
          changeOrigin: true,
          secure: false,
        },
        '/generated-characters': {
          target: runtimeServerTarget,
          changeOrigin: true,
          secure: false,
        },
        '/generated-animations': {
          target: runtimeServerTarget,
          changeOrigin: true,
          secure: false,
        },
        '/generated-custom-world-scenes': {
          target: runtimeServerTarget,
          changeOrigin: true,
          secure: false,
        },
        '/generated-custom-world-covers': {
          target: runtimeServerTarget,
          changeOrigin: true,
          secure: false,
        },
        '/generated-qwen-sprites': {
          target: runtimeServerTarget,
          changeOrigin: true,
          secure: false,
        },
        '/api/auth': {
          target: runtimeServerTarget,
          changeOrigin: true,
          secure: false,
        },
        '/api/runtime': {
          target: runtimeServerTarget,
          changeOrigin: true,
          secure: false,
        },
        '/api/story': {
          target: runtimeServerTarget,
          changeOrigin: true,
          secure: false,
        },
        '/api/editor': {
          target: runtimeServerTarget,
          changeOrigin: true,
          secure: false,
        },
        '/api/assets': {
          target: runtimeServerTarget,
          changeOrigin: true,
          secure: false,
        },
        '/api/custom-world': {
          target: runtimeServerTarget,
          changeOrigin: true,
          secure: false,
        },
        '/api/llm': {
          target: runtimeServerTarget,
          changeOrigin: true,
          secure: false,
        },
        '/api/ws': {
          target: runtimeServerTarget,
          changeOrigin: true,
          secure: false,
          ws: true,
        },
      },
      watch: {
        ignored: ignoredWatchGlobs,
      },
    },
  };
});