const { exec, match, parse } = require('matchit');

class Trouter {
	constructor(opts) {
		this.opts = opts || {};
		this.routes = {};
		this.handlers = {};

		this.all = this.add.bind(this, '*');
		this.get = this.add.bind(this, 'GET');
		this.head = this.add.bind(this, 'HEAD');
		this.patch = this.add.bind(this, 'PATCH');
		this.options = this.add.bind(this, 'OPTIONS');
    this.connect = this.add.bind(this, 'CONNECT');
		this.delete = this.add.bind(this, 'DELETE');
    this.trace = this.add.bind(this, 'TRACE');
		this.post = this.add.bind(this, 'POST');
		this.put = this.add.bind(this, 'PUT');
	}

	add(method, pattern, ...fns) {
		// Save decoded pattern info
		if (this.routes[method] === void 0) this.routes[method]=[];
		this.routes[method].push(parse(pattern));
		// Save route handler(s)
		if (this.handlers[method] === void 0) this.handlers[method]={};
		this.handlers[method][pattern] = fns;
		// Allow chainable
		return this;
	}

	find(method, url) {
		let arr = match(url, this.routes[method] || []);
		if (arr.length === 0) {
			arr = match(url, this.routes[method='*'] || []);
			if (!arr.length) return false;
		}
		return {
			params: exec(url, arr),
			handlers: this.handlers[method][arr[0].old]
		};
	}
}

module.exports = Trouter;