buiquangduc / WP_Default_Feature_Image

var GFImage = function() {

	var $ = jQuery;

	var gFImage = this;

	var element = $('#generate_fimage_wrapper');

	var postNoFImageIds = element.data('post_no_fimage_ids');

	var totalPostNoFImage = postNoFImageIds.length;

	var securityToken = element.data('nonce');

	var informationWrapper = $('.generate-fimage-information');

	var progressBarID = '#generate_fimage_progressbar';

	var progressBar;

	var generateButton = $('#generate_fimage_button');

	var saveButton = $('#save_form_button');

	this.init = function() {

		gFImage._progressBarInit();

		gFImage._onClickGButton();

	}	

	this._progressBarInit = function() {

		var ProgressBar = require('progressbar.js');

		progressBar = new ProgressBar.Line(progressBarID, {

	        easing: 'easeInOut'

	    });

	}

	this._onClickGButton = function() {

		generateButton.click(function(event){

			event.preventDefault();

			var warningResult = gFImage._warning();

			if(warningResult) {

				gFImage._toggleButton([generateButton, saveButton], 'disable');

				gFImage._ajaxUpdateFImage(postNoFImageIds[0]);

			}

		});

	}

	this._toggleButton = function(arrayElement, status) {

	this._ajaxUpdateFImage = function(postId) {

		$.ajax({

            url: '/wp-admin/admin-ajax.php?action=wpdfi_generate_feature_image',

            method: 'POST',

            data: {

                post_id: postId,

                security: securityToken

            },

            success: function(res) {

            	var response = JSON.parse(res);

            	gFImage._updateLogAfterAjax(response);

            	var arrayIndex = postNoFImageIds.indexOf(postId);

            	gFImage._updateProgressBar(arrayIndex);

            	gFImage._continueAjax(arrayIndex);

            }

        })

	}

	this._updateProgressBar = function(arrayIndex) {

		/* Javascript array index start at 0, so we need to plus 1 to get the correct value for divide purpose. */

		var realIndex = arrayIndex + 1;

		var currentPercent = realIndex/totalPostNoFImage;

		var currentPercentText = (currentPercent*100).toFixed(2) + '%';

		progressBar.set(currentPercent);

		progressBar.setText(currentPercentText);

	}

	this._continueAjax = function(arrayIndex) {

		/* Javascript array index start at 0, so we need to minus 1 from total posts to get the last index. */

		var lastIndex = totalPostNoFImage - 1;

		var isLastIndex = (arrayIndex == lastIndex);

		/* If the current index is not the last index, continue run Ajax request on the next index. */

		if(!isLastIndex) {

			gFImage._ajaxUpdateFImage(postNoFImageIds[arrayIndex + 1]);

		}

	}

	this._updateLogAfterAjax = function(response) {

		switch(response.status) {

    		case true:

    			informationWrapper.append('<p>' + response.namePT + ' with ID ' + response.postId +' is updated feature image successfully</p>');

    			break;

    		case false:

    			informationWrapper.append('<p>' + response.namePT + ' with ID ' + response.postId +' because conditions are not match.</p>');

    			break;

    		default:

    			informationWrapper.append('<p>' + response.namePT + ' with ID ' + response.postId +' has something wrong!</p>');

    	}

	}

	this._warning = function() {

		var warningText = 'Are you sure you want to generate all feature image with the values in the "Sections" tab? Make sure to backup your database before click "OK".';

		return confirm(warningText);

	}

}