// Uplink Gemini Server
// Router Class

function selectRoute(path, routes) {
  result = -1;
  console.log(path);
  var mPathComponents = path.split('/');
  routes.forEach((item, index) => {
    console.log(item);
    var mitem = item.split('/');
    if((mitem.length == mPathComponents.length)) {
      if((item.indexOf(':') > 0) && (path.endsWith('/') == false)) {
        console.log('we need parameters');
        var mmitem = item.substring(item.indexOf(':'));
        var mmpath = path.substring(item.indexOf(':'));
        var mmitemList = mmitem.split('/');
        var mmpathList = mmpath.split('/');
        if(mmitemList.length == mmpathList.length) {
          console.log('winner is here');
          if(result == -1) result = index;
        }
      } else {
        console.log('we do not need parameters');
        if(item == path) {
          console.log('winnere here');
          if(result == -1) result = index;
        }
      }
    }
  });
  return result;
}

module.exports = class Router {
  constructor() {
    this.routes = [];
    this.handlers = [];
  }

  use(route, handler) {
    this.routes[this.routes.length] = route;
    this.handlers[this.handlers.length] = handler;
    this.request = undefined;
    this.response = undefined;
  }

  set(path, request, response) {
    this.request = request;
    this.response = response;

    /////////////////////////////////////
    console.log(selectRoute(path, this.routes));

    

    /////////////////////////////////////

    var pathComponents = path.split('/');
    for (var i = 0; i < pathComponents.length; i++) {
      pathComponents[i] = '/' + pathComponents[i];
    }

    var routes = this.routes;

    var paths = [];
    var params = [];

    var mindex = selectRoute(path, this.routes);

    if(mindex == -1) {
      this.response.error(51);
      return;
    }

    var routeComponents = routes[mindex].split('/');
    paths = [];
    params = [];

    if (routeComponents.length == pathComponents.length) {
      for (var k = 0; k < routeComponents.length; k++) {
        routeComponents[k] = '/' + routeComponents[k];
        if (routeComponents[k].startsWith('/:')) {
          params.push(routeComponents[k]);
        } else {
          paths.push(routeComponents[k]);
        }
      }
    }
        
    var finalParams = pathComponents.slice(paths.length);
    for (var l = 0; l < finalParams.length; l++) {
      finalParams[l] = finalParams[l].substring(1);
    }
    var myParams = {};
    for (var m = 0; m < params.length; m++) {
      eval('myParams.' + params[m].substring(2) + ' = "' + JSON.stringify(finalParams[m]).slice(1, -1) + '"');
    }

    this.request.params = myParams;
    var mm = typeof this.handlers[mindex];
    if (mm !== 'undefined') {
      this.handlers[mindex](this.request, this.response);
      return;
    } else {
      this.response.error(51);
      return;
    }
  }
};