/**
 * Created by Kartik Andalam on 9/8/15.
 * Copyright (c) 2015 APIMatic. All rights reserved.
 *
 */
var HttpContext = require("./HttpContext");
var HttpResponse = require("../Response/HttpResponse");
var request = require("superagent");
var APIHelper = require('../../APIHelper');


var convertHttpRequest = function (req) {
    //Convert to request's version of http request

    var options = {
        url: req.queryUrl,
        method: req.method,
        headers: req.headers
    };
    if (req.username) {
        options.auth = {user:req.username, pass:req.password};
    }
    if (req.body) {
        options.body = req.body;
    }
    if (req.formData) {
        options.formData = APIHelper.formDataEncodeObject(req.formData);
    }
    if (req.form) {
        options.form = APIHelper.urlEncodeObject(req.form);
        options.headers["content-type"] = 'application/x-www-form-urlencoded';
    }
    return options;
}

var convertHttpResponse = function (resp) {
    var response = new HttpResponse();
    if(resp) {
        response.body = resp.body;
        response.headers = resp.headers;
        response.statusCode = resp.statusCode;
    }

    return response;
}

var methodMap = {
    GET: 'get',
    DELETE: 'del',
    HEAD: 'head',
    PATH: 'patch',
    POST: 'post',
    PUT: 'put'
}

request.parse['application/json'] = function(s) { return s; };

/**
 * Execute a given HttpRequest to get string response back
 * @param	{HttpRequest | HttpBodyRequest} request    The query string builder to replace the template parameters
 * @param	{Array} parameters    The parameters to replace in the queryBuilder
 */
function executeRequest(req, callback) {

    //Convert abstracted request to request's http request
    var options = convertHttpRequest(req);
    var context = new HttpContext();
    context.request = req;

    //Make a temp callback
    var internalCallback = function cb(error, res) {
        var response = convertHttpResponse(res);
        context.response = response;
        callback(error, response, context);
    };

    request[methodMap[options.method]](options.url)
        .set(options.headers)
        .send(options.body)
        .end(internalCallback)
}

module.exports = executeRequest;