import { defineConfig } from "vite";
import { svelte } from "@sveltejs/vite-plugin-svelte";
import sveltePreprocess from "svelte-preprocess";
import wasm from "vite-plugin-wasm";
import { internalIpV4 } from 'internal-ip'
import topLevelAwait from "vite-plugin-top-level-await";

// https://vitejs.dev/config/
export default defineConfig(async () => {
  
  const host = await internalIpV4()

  return {
    plugins: [
      
      svelte({
        preprocess: [
          sveltePreprocess({
            typescript: true,
          }),
        ],
        onwarn: (warning, handler) => {
          // disable a11y warnings
          if (warning.code.startsWith("a11y-")) return;
          handler(warning);
        },
      }),
      wasm(),
      topLevelAwait(),
    ],

    // Vite options tailored for Tauri development and only applied in `tauri dev` or `tauri build`
    // prevent vite from obscuring rust errors
    clearScreen: false,
    // tauri expects a fixed port, fail if that port is not available
    server: {
      host: '0.0.0.0', // listen on all addresses
      port: 5174,
      strictPort: true,
      hmr: {
        protocol: 'ws',
        host,
        port: 5184,
      },
    },
    // to make use of `TAURI_DEBUG` and other env variables
    // https://tauri.studio/v1/api/config#buildconfig.beforedevcommand
    envPrefix: ["VITE_", "TAURI_"],
    build: {
      // Tauri supports es2021
      target: process.env.TAURI_PLATFORM == "es2021",
      // don't minify for debug builds
      minify: process.env.TAURI_DEBUG ? false : 'esbuild',
      // produce sourcemaps for debug builds
      sourcemap: !!process.env.TAURI_DEBUG,
      chunkSizeWarningLimit: 2000
    },
    
    optimizeDeps:{
      needsInterop:[
        "@mlc-ai/web-tokenizers"
      ]
    },

    resolve:{
      alias:{
        'src':'/src',
        'modules': '/modules'
      }
    }
}});