#!/usr/bin/env node
/**
 * Creates deployment-ready Falukant GLBs in the asset repository.
 * Sources remain in models-src; only optimized *_opt.glb files are written
 * to public/models and are later fetched by update-frontend.sh.
 *
 * Example:
 *   npm run build-runtime-models -- --assets-dir ../YourPart3Assets
 */
import fs from 'node:fs';
import path from 'node:path';
import { spawnSync } from 'node:child_process';
import { fileURLToPath } from 'node:url';

const scriptDir = path.dirname(fileURLToPath(import.meta.url));
const frontendDir = path.resolve(scriptDir, '..');
const args = process.argv.slice(2);
const optionIndex = args.indexOf('--assets-dir');
const categoryIndex = args.indexOf('--category');
const assetsDir = path.resolve(optionIndex >= 0 && args[optionIndex + 1]
  ? args[optionIndex + 1]
  : path.join(frontendDir, '..', '..', 'YourPart3Assets'));
const sourceRoot = path.join(assetsDir, 'models-src', '3d', 'falukant');
const outputRoot = path.join(assetsDir, 'public', 'models', '3d', 'falukant');

const selectedCategory = categoryIndex >= 0 ? args[categoryIndex + 1] : null;
const categories = selectedCategory ? [selectedCategory] : ['characters', 'houses'];
if (categories.some((category) => !['characters', 'houses'].includes(category))) {
  throw new Error('Use --category characters or --category houses.');
}

for (const category of categories) {
  const sourceDir = path.join(sourceRoot, category);
  const outputDir = path.join(outputRoot, category);
  if (!fs.existsSync(sourceDir)) {
    throw new Error(`Missing model source directory: ${sourceDir}`);
  }

  const result = spawnSync(process.execPath, [path.join(scriptDir, 'optimize-glb.mjs')], {
    cwd: frontendDir,
    stdio: 'inherit',
    env: {
      ...process.env,
      MODEL_SOURCE_DIR: sourceDir,
      MODEL_OUTPUT_DIR: outputDir,
      CLEAN_MODEL_OUTPUT: 'true',
    },
  });
  if (result.status !== 0) process.exit(result.status ?? 1);
}

console.log(`Runtime models ready in ${outputRoot}`);