const fs = require('node:fs');
const path = require('node:path');
const dotenv = require('dotenv');

const rootEnvPath = path.resolve(__dirname, '../../.env');
const outputPath = path.resolve(__dirname, '../public/env.js');

dotenv.config({ path: rootEnvPath });

const runtimeEnv = {
  PRIVATECHAT_CLIENT_SERVER_URL: process.env.PRIVATECHAT_CLIENT_SERVER_URL ?? 'http://localhost:3000',
  PRIVATECHAT_CLIENT_WHISPER_MODEL: process.env.PRIVATECHAT_CLIENT_WHISPER_MODEL ?? 'Xenova/whisper-small',
  PRIVATECHAT_CLIENT_WHISPER_LANGUAGE: process.env.PRIVATECHAT_CLIENT_WHISPER_LANGUAGE ?? 'auto',
  PRIVATECHAT_CLIENT_TRANSFORMERS_WASM_PATH:
    process.env.PRIVATECHAT_CLIENT_TRANSFORMERS_WASM_PATH ?? '/transformers-wasm/',
};

const fileContents = `window.__PRIVATECHAT_ENV__ = ${JSON.stringify(runtimeEnv, null, 2)};\n`;

fs.mkdirSync(path.dirname(outputPath), { recursive: true });
fs.writeFileSync(outputPath, fileContents, 'utf8');