#!/usr/bin/env node

const fs = require('fs');
const path = require('path');

const repoRoot = path.resolve(__dirname, '..');
const srcRoot = path.join(repoRoot, 'wwjcloud', 'src');

function isTypescriptFile(filePath) {
	return filePath.endsWith('.ts') && !filePath.endsWith('.d.ts') && !filePath.endsWith('.spec.ts');
}

function walk(dir, collected = []) {
	const entries = fs.readdirSync(dir, { withFileTypes: true });
	for (const entry of entries) {
		const fullPath = path.join(dir, entry.name);
		if (entry.isDirectory()) {
			walk(fullPath, collected);
		} else if (entry.isFile() && isTypescriptFile(fullPath)) {
			collected.push(fullPath);
		}
	}
	return collected;
}

function isControllerFile(filePath) {
	return filePath.includes(path.join('controllers', 'adminapi') + path.sep) || filePath.includes(path.join('controllers', 'api') + path.sep);
}

function getBasePath(fileContent) {
	const controllerMatch = fileContent.match(/@Controller\(([^)]*)\)/);
	if (!controllerMatch) return '';
	const arg = controllerMatch[1];
	const strMatch = arg && arg.match(/['"`]([^'"`]*)['"`]/);
	return strMatch ? strMatch[1] : '';
}

function extractRoutes(fileContent) {
	const routes = [];
	const methodDecorators = ['Get', 'Post', 'Put', 'Patch', 'Delete', 'Options', 'Head', 'All'];
	for (const m of methodDecorators) {
		const regex = new RegExp(`@${m}\\(([^)]*)\\)`, 'g');
		let match;
		while ((match = regex.exec(fileContent)) !== null) {
			const arg = match[1] || '';
			let subPath = '';
			const strMatch = arg.match(/['"`]([^'"`]*)['"`]/);
			if (strMatch) subPath = strMatch[1];
			routes.push({ method: m.toUpperCase(), subPath });
		}
	}
	return routes;
}

function main() {
	if (!fs.existsSync(srcRoot)) {
		console.error(`src root not found: ${srcRoot}`);
		process.exit(1);
	}
	const allTs = walk(srcRoot);
	const controllerFiles = allTs.filter(isControllerFile);

	const rows = [];
	for (const filePath of controllerFiles) {
		const content = fs.readFileSync(filePath, 'utf8');
		if (!/@Controller\(/.test(content)) continue;
		const base = getBasePath(content);
		const routes = extractRoutes(content);
		const rel = path.relative(repoRoot, filePath);
		for (const r of routes) {
			rows.push({ file: rel, base, method: r.method, sub: r.subPath });
		}
	}

	console.log('file,basePath,method,subPath');
	for (const row of rows) {
		console.log(`${row.file},${row.base},${row.method},${row.sub}`);
	}
}

if (require.main === module) {
	try {
		main();
	} catch (err) {
		console.error('export-routes failed:', err);
		process.exit(1);
	}
}