#!/usr/bin/env node

import { execSync } from 'child_process';
import { readFileSync, writeFileSync } from 'fs';
import { fileURLToPath } from 'url';
import { dirname, join } from 'path';

const __filename = fileURLToPath(import.meta.url);
const __dirname = dirname(__filename);
const rootDir = join(__dirname, '..');

// exec helper
function exec(command, options = {}) {
	const defaultOptions = {
		stdio: 'inherit',
		cwd: rootDir,
		shell: true,
		...options,
	};
	return execSync(command, defaultOptions);
}

try {

	const schemaPath = join(rootDir, 'src/parser/xo-template.schema.json');
	const validatorPath = join(rootDir, 'src/parser/ajv/validate-xo-template.js');
	const tsconfigPath = join(rootDir, 'tsconfig.json');
	const templatePath = join(
		rootDir,
		'node_modules/@xo-cash/types/build/template.d.ts',
	);

	// Generate schema JSON (write to file directly instead of shell redirection)
	const schemaContent = execSync(
		`ts-json-schema-generator --no-ref-encode --tsconfig "${tsconfigPath}" --path "${templatePath}" --type "XOTemplate"`,
		{ encoding: 'utf8', cwd: rootDir },
	);
	writeFileSync(schemaPath, schemaContent, 'utf8');

	// Compile validator with AJV
	exec(
		`ajv compile -s "${schemaPath}" --allowUnionTypes -o "${validatorPath}"`,
	);

	// Transform the generated validator code
	let code = readFileSync(validatorPath, 'utf8');

	code = code
		.replace(
			/"use strict";module\.exports = [^;]+;module\.exports\.default = [^;]+;/,
			'export default validate20;',
		)
		.replace(/;const /g, ';\nconst ')
		.replace(/;function /g, ';\nfunction ')
		.replace(/\}function /g, '}\nfunction ');

	writeFileSync(validatorPath, code, 'utf8');

	console.log('Schema generation complete!');
} catch (error) {
	console.error('Error generating schema:', error.message);
	process.exit(1);
}