#!/usr/bin/env bun
/**
 * Quick validation script for skills - minimal version
 */

import { existsSync } from 'node:fs';
import { readFile } from 'node:fs/promises';
import { join } from 'node:path';

interface ValidationResult {
	valid: boolean;
	message: string;
}

async function validateSkill(skillPath: string): Promise<ValidationResult> {
	// Check SKILL.md exists
	const skillMd = join(skillPath, 'SKILL.md');

	if (!existsSync(skillMd)) {
		return { valid: false, message: 'SKILL.md not found' };
	}

	// Read and validate frontmatter
	const content = await readFile(skillMd, 'utf-8');

	if (!content.startsWith('---')) {
		return { valid: false, message: 'No YAML frontmatter found' };
	}

	// Extract frontmatter
	const frontmatterMatch = content.match(/^---\n(.*?)\n---/s);

	if (!frontmatterMatch) {
		return { valid: false, message: 'Invalid frontmatter format' };
	}

	const frontmatter = frontmatterMatch[1];

	// Check required fields
	if (!frontmatter.includes('name:')) {
		return { valid: false, message: "Missing 'name' in frontmatter" };
	}

	if (!frontmatter.includes('description:')) {
		return { valid: false, message: "Missing 'description' in frontmatter" };
	}

	// Extract name for validation
	const nameMatch = frontmatter.match(/name:\s*(.+)/);

	if (nameMatch) {
		const name = nameMatch[1].trim();

		// Check naming convention (hyphen-case: lowercase with hyphens)
		if (!/^[a-z0-9-]+$/.test(name)) {
			return {
				valid: false,
				message: `Name '${name}' should be hyphen-case (lowercase letters, digits, and hyphens only)`,
			};
		}

		if (name.startsWith('-') || name.endsWith('-') || name.includes('--')) {
			return {
				valid: false,
				message: `Name '${name}' cannot start/end with hyphen or contain consecutive hyphens`,
			};
		}
	}

	// Extract and validate description
	const descMatch = frontmatter.match(/description:\s*(.+)/);

	if (descMatch) {
		const description = descMatch[1].trim();

		// Check for angle brackets
		if (description.includes('<') || description.includes('>')) {
			return { valid: false, message: 'Description cannot contain angle brackets (< or >)' };
		}
	}

	return { valid: true, message: 'Skill is valid!' };
}

async function main() {
	const args = process.argv.slice(2);

	if (args.length !== 1) {
		console.log('Usage: bun quick_validate.ts <skill_directory>');
		process.exit(1);
	}

	const { valid, message } = await validateSkill(args[0]);
	console.log(message);
	process.exit(valid ? 0 : 1);
}

// Export for use in other scripts
export { validateSkill };

// Only run main if this is the main module
if (import.meta.main) {
	main();
}