rest.js

import world from './world.js';

class Query {

      // Generic Stuff
      
      constructor(){
            this._path = 'rest';
            this._body = null;
      }     
      clone(){
            let q = new Query;
            q._path = this._path;
            q._body = this._body;
            return q;
      }     
      path(...token){
            let q = this.clone();
            q._path += token.map(t -> '/'+t);
            return q;
      }
      body(obj){
            let q = this.clone();
            q._body = JSON.stringify(obj);
            return q;
      }
      get(){
            return fetch(this._path).then(function(response){
                  return response.json();
            });
      }
      post(){
            return fetch(this._path, {method:"POST", body:this._body}).then(function(response){
                  return response.json();
            });
      }

      // Stuff specific to Superpos

      line(id){
            if (typeof id === "number") return this.path("lines", id);
            for (let i=0; i<world.lines.length; i++) {
                  if (world.lines[i] == id) {
                        return this.path("lines", i);
                  }
            }
            // throw new Error("unknow line:" +id);
      }
}

export default new Query;