import { defineConfig } from 'vite'
import react from '@vitejs/plugin-react'
import { resolve } from 'path'
import { readFileSync } from 'fs'
import viteTsconfigPaths from 'vite-tsconfig-paths'
import checker from 'vite-plugin-checker'

// https://vite.dev/config/
export default defineConfig(() => {
  // Read package.json for version info
  const packageJson = JSON.parse(readFileSync('./package.json', 'utf-8'))

  return {
    base: process.env.VITE_BASE_PATH ? `/${process.env.VITE_BASE_PATH}/` : '/',
    plugins: [
      react(),
      viteTsconfigPaths(), // Enables TypeScript path mapping from tsconfig.json
      checker({
        typescript: true
      })
    ],
    server: {
      port: 3000,
      open: true,
    },
    build: {
      outDir: 'build',
      sourcemap: true,
    },
    resolve: {
      alias: {
        '@': resolve(__dirname, 'src'),
      },
    },
    define: {
      // Expose app version and build date as Vite environment variables
      'import.meta.env.VITE_APP_VERSION': JSON.stringify(packageJson.version),
      'import.meta.env.VITE_APP_DATE': JSON.stringify(new Date().toISOString()),
    },
  }
})