import { defineConfig } from "vite";
import { sveltekit } from "@sveltejs/kit/vite";
import { readFileSync } from 'fs';
import { fileURLToPath } from 'url';
import { dirname, resolve } from 'path';

const __dirname = dirname(fileURLToPath(import.meta.url));
const packageJson = JSON.parse(
  readFileSync(resolve(__dirname, 'package.json'), 'utf-8')
);

const host = process.env.TAURI_DEV_HOST;

// https://vite.dev/config/
export default defineConfig(async () => ({
  plugins: [sveltekit()],

  // Define app version from package.json at build time
  define: {
    '__APP_VERSION__': JSON.stringify(packageJson.version)
  },

  // Vite options tailored for Tauri development and only applied in `tauri dev` or `tauri build`
  //
  // 1. prevent Vite from obscuring rust errors
  clearScreen: false,
  // 2. tauri expects a fixed port, fail if that port is not available
  server: {
    port: 1420,
    strictPort: true,
    host: host || false,
    hmr: host
      ? {
          protocol: "ws",
          host,
          port: 1421,
        }
      : undefined,
    watch: {
      // 3. tell Vite to ignore watching `src-tauri`
      ignored: ["**/src-tauri/**"],
    },
  },
}));
