/// <reference types="vitest/config" />
import { defineConfig } from 'vitest/config';
import react from '@vitejs/plugin-react';
import tailwindcss from '@tailwindcss/vite';
import path from 'node:path';
import fs from 'node:fs';
import { fileURLToPath } from 'node:url';
import { storybookTest } from '@storybook/addon-vitest/vitest-plugin';
import { playwright } from '@vitest/browser-playwright';
const dirname = typeof __dirname !== 'undefined' ? __dirname : path.dirname(fileURLToPath(import.meta.url));

// Read service version from package.json so DevOps panel reflects the real version.
const webPackageJson = JSON.parse(fs.readFileSync(path.resolve(__dirname, 'package.json'), 'utf8')) as { version?: string };
const webServiceVersion = webPackageJson.version || '0.0.0';

// More info at: https://storybook.js.org/docs/next/writing-tests/integrations/vitest-addon
const monacoEditorPath = path.resolve(__dirname, 'node_modules/monaco-editor');
const workspaceRoot = path.resolve(__dirname, '..', '..');
const commonPlatRoot = path.join(workspaceRoot, 'learning_ai_common_plat');
function commonPlatSourceEntry(pkg: string): string | null {
  const sourceEntry = path.join(commonPlatRoot, 'packages', pkg, 'src', 'index.ts');
  return fs.existsSync(sourceEntry) ? sourceEntry : null;
}

// Resolve a @bytelyst/* package: prefer web/node_modules, fall back to vendor/
function bytelystAlias(pkg: string): string {
  const sourceEntry = commonPlatSourceEntry(pkg);
  if (sourceEntry) return sourceEntry;
  const nmPath = path.resolve(__dirname, 'node_modules/@bytelyst', pkg);
  const vendorPath = path.resolve(__dirname, '../vendor/bytelyst', pkg);
  if (fs.existsSync(nmPath)) return nmPath;
  if (fs.existsSync(vendorPath)) return vendorPath;
  return nmPath; // let Vite surface the missing-module error
}

// https://vite.dev/config/
export default defineConfig({
  plugins: [react(), tailwindcss()],
  define: {
    __WEB_SERVICE_VERSION__: JSON.stringify(webServiceVersion),
  },
  // Shared files (../shared/*.ts) live outside web/ so Vite resolves their imports
  // from the repo root where @bytelyst/* are not installed. Redirect all @bytelyst/*
  // imports first to web/node_modules, then fall back to the monorepo vendor/ dir.
  resolve: {
    // Deduplicate React so the vendored react-auth dist resolves the same react instance
    dedupe: ['react', 'react-dom', 'react/jsx-runtime', 'react-router-dom'],
    alias: [
    // Vendor packages that live only in vendor/ (not in web/node_modules/)
    {
      find: '@bytelyst/api-client',
      replacement: bytelystAlias('api-client')
    }, {
      find: '@bytelyst/design-tokens',
      replacement: bytelystAlias('design-tokens')
    }, {
      find: '@bytelyst/errors',
      replacement: bytelystAlias('errors')
    }, {
      find: '@bytelyst/kill-switch-client',
      replacement: bytelystAlias('kill-switch-client')
    }, {
      find: '@bytelyst/react-auth',
      replacement: bytelystAlias('react-auth')
    }, {
      find: '@bytelyst/telemetry-client',
      replacement: bytelystAlias('telemetry-client')
    }, {
      find: '@bytelyst/ui',
      replacement: bytelystAlias('ui')
    },
    // Monaco is an explicit web dependency, but this workspace often runs
    // against pnpm's root store without a web/node_modules symlink when the
    // private mobile registry is unavailable. Keep local worker imports
    // resolvable for Vite in that partially installed state.
    {
      find: /^monaco-editor$/,
      replacement: monacoEditorPath
    }, {
      find: /^monaco-editor\/(.+)/,
      replacement: `${monacoEditorPath}/$1`
    },
    // General catch-all: every other @bytelyst/* → web/node_modules.
    // Restricted to single-segment scope names only, so subpath imports like
    // `@bytelyst/devops/ui` go through normal package resolution (exports map).
    {
      find: /^@bytelyst\/([^/]+)$/,
      replacement: path.resolve(__dirname, 'node_modules/@bytelyst/$1')
    }]
  },
  build: {
    chunkSizeWarningLimit: 5000,
    rollupOptions: {
      output: {
        manualChunks(id) {
          if (id.includes('monaco-editor') || id.includes('@monaco-editor')) {
            return 'monaco-vendor';
          }
          if (id.includes('/node_modules/')) {
            return 'vendor';
          }
          return undefined;
        }
      }
    }
  },
  test: {
    projects: [{
      extends: true,
      test: {
        environment: 'jsdom',
        setupFiles: ['./src/test/setup.ts'],
        include: ['src/**/*.test.ts', 'src/**/*.test.tsx', 'src/**/*.dom.test.tsx']
      }
    }, {
      extends: true,
      plugins: [
      // The plugin will run tests for the stories defined in your Storybook config
      // See options at: https://storybook.js.org/docs/next/writing-tests/integrations/vitest-addon#storybooktest
      storybookTest({
        configDir: path.join(dirname, '.storybook')
      })],
      test: {
        name: 'storybook',
        browser: {
          enabled: true,
          headless: true,
          provider: playwright({}),
          instances: [{
            browser: 'chromium'
          }]
        }
      }
    }]
  }
});