class Router {
    constructor(base) {
        this.routes = [];
        this.base = base;
    };
  
    addRoute(method, path, handler) {
        const paramNames = [];
        const regexPath = path
        .replace(/:([^/]+)/g, (match, paramName) => {
            paramNames.push(paramName);
            return '([^/]+)';
        })
        .replace(/\*/g, '.*');
        
        this.routes.push({
            method,
            path,
            regex: new RegExp(`^${regexPath}$`),
            paramNames,
            handler
        });
    } 
  
    get(path, handler) {
        this.addRoute("GET", this.base ? this.base + path : path, handler);
        console.info(this.base ? this.base + path : path)
    }

    post(path, handler) {
        this.addRoute("POST", this.base ? this.base + path : path, handler);
        console.info("POST", this.base ? this.base + path : path)

    }
    
    put(path, handler) {
        this.addRoute("PUT", this.base ? this.base + path : path, handler);
    }
    
    delete(path, handler) { 
        this.addRoute("DELETE", this.base ? this.base + path : path, handler);
    }
  
    handle(res, req) {
        const method = req.getMethod().toUpperCase();
        const urlPrepare = req.getUrl().split("/");
        const urlRelevant = urlPrepare.slice(2, urlPrepare.length);
        const url = "/" + urlRelevant.join("/");
        console.info("hm?", method)
        for (const route of this.routes) {
            if (route.method === method) {
                const match = url.match(route.regex);
                console.info(url, route, method)
                if (!match) continue;

                const params = {};
                route.paramNames.forEach((name, index) => params[name] = match[index + 1]);
                
                req.params = params;

                return route.handler(res, req);
            };
        };
    
        res
        .writeStatus("404 Not Found")
        .end("Invalid route");
    }
};

module.exports = Router;