/*
 * Copyright 2012 LinkedIn Corp.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

$.namespace('azkaban');

var jobEditView;
azkaban.JobEditView = Backbone.View.extend({
	events : {
		"click" : "closeEditingTarget",
		"click #set-btn": "handleSet",	
		"click #cancel-btn": "handleCancel",
		"click #addRow": "handleAddRow",
		"click table .editable": "handleEditColumn",
		"click table .removeIcon": "handleRemoveColumn"
	},
	
	initialize: function(setting) {
		this.projectURL = contextURL + "manager"
		this.generalParams = {}
		this.overrideParams = {}
	},
	
	handleCancel: function(evt) {
		$('#job-edit-pane').hide();
		var tbl = document.getElementById("generalProps").tBodies[0];
		var rows = tbl.rows;
		var len = rows.length;
		for (var i = 0; i < len-1; i++) {
			tbl.deleteRow(0);
		}
	},
	
	show: function(projectName, flowName, jobName) {
		this.projectName = projectName;
		this.flowName = flowName;
		this.jobName = jobName;
		
		var projectURL = this.projectURL
		
		$('#job-edit-pane').modal();
		
		var handleAddRow = this.handleAddRow;
		
		/*var overrideParams;
		var generalParams;
		this.overrideParams = overrideParams;
		this.generalParams = generalParams;*/
		var fetchJobInfo = {
			"project": this.projectName, 
			"ajax": "fetchJobInfo", 
			"flowName": this.flowName, 
			"jobName": this.jobName
		};
		var mythis = this;
		var fetchJobSuccessHandler = function(data) {
			if (data.error) {
				alert(data.error);
			}
			else {
				document.getElementById('jobName').innerHTML = data.jobName;				
				document.getElementById('jobType').innerHTML = data.jobType;
				var generalParams = data.generalParams;
				var overrideParams = data.overrideParams;
						
				/*for (var key in generalParams) {
					var row = handleAddRow();
					var td = $(row).find('span');
					$(td[1]).text(key);
					$(td[2]).text(generalParams[key]);
				}*/
						
				mythis.overrideParams = overrideParams;
				mythis.generalParams = generalParams;
				
				for (var okey in overrideParams) {
					if (okey != 'type' && okey != 'dependencies') {
						var row = handleAddRow();
						var td = $(row).find('span');
						$(td[1]).text(okey);
						$(td[2]).text(overrideParams[okey]);
					}
				}
			}
		};

		$.get(projectURL, fetchJobInfo, fetchJobSuccessHandler, "json");
	},

	handleSet: function(evt) {
		this.closeEditingTarget(evt);
		var jobOverride = {};
		var editRows = $(".editRow");
		for (var i = 0; i < editRows.length; ++i) {
			var row = editRows[i];
			var td = $(row).find('span');
			var key = $(td[1]).text();
			var val = $(td[2]).text();

			if (key && key.length > 0) {
				jobOverride[key] = val;
			}
		}
		
		var overrideParams = this.overrideParams
		var generalParams = this.generalParams
		
		jobOverride['type'] = overrideParams['type']
		if ('dependencies' in overrideParams) {
			jobOverride['dependencies'] = overrideParams['dependencies']
		}
		
		var project = this.projectName
		var flowName = this.flowName
		var jobName = this.jobName
		
		var jobOverrideData = {
			project: project,
			flowName: flowName,
			jobName: jobName,
			ajax: "setJobOverrideProperty",
			jobOverride: jobOverride
		};

		var projectURL = this.projectURL
		var redirectURL = projectURL+'?project='+project+'&flow='+flowName+'&job='+jobName;
		var jobOverrideSuccessHandler = function(data) {
			if (data.error) {
				alert(data.error);
			}
			else {
				window.location = redirectURL;
			}
		};
		
		$.get(projectURL, jobOverrideData, jobOverrideSuccessHandler, "json");
	},
	
	handleAddRow: function(evt) {
		var tr = document.createElement("tr");
		var tdName = document.createElement("td");
		var tdValue = document.createElement("td");

		var icon = document.createElement("span");
		$(icon).addClass("removeIcon");
		var nameData = document.createElement("span");
		$(nameData).addClass("spanValue");
		var valueData = document.createElement("span");
		$(valueData).addClass("spanValue");

		$(tdName).append(icon);
		$(tdName).append(nameData);
		$(tdName).addClass("name");
		$(tdName).addClass("editable");
		nameData.myparent = tdName;

		$(tdValue).append(valueData);
			$(tdValue).addClass("editable");
		valueData.myparent = tdValue;
		
		$(tr).addClass("editRow");
		$(tr).append(tdName);
		$(tr).append(tdValue);

		$(tr).insertBefore("#addRow");
		return tr;
	},
	
	handleEditColumn: function(evt) {
		var curTarget = evt.currentTarget;
	
		if (this.editingTarget != curTarget) {
			this.closeEditingTarget(evt);
		
			var text = $(curTarget).children(".spanValue").text();
			$(curTarget).empty();
						
			var input = document.createElement("input");
			$(input).attr("type", "text");
			$(input).css("width", "100%");
			$(input).val(text);
			
			$(curTarget).addClass("editing");
			$(curTarget).append(input);
			$(input).focus();
			var obj = this;
			$(input).keypress(function(evt) {
				if (evt.which == 13) {
					obj.closeEditingTarget(evt);
				}
			});
			
			this.editingTarget = curTarget;
		}

		evt.preventDefault();
		evt.stopPropagation();
	},
	
	handleRemoveColumn: function(evt) {
		var curTarget = evt.currentTarget;
		// Should be the table
		var row = curTarget.parentElement.parentElement;
		$(row).remove();
	},
	
	closeEditingTarget: function(evt) {
		if (this.editingTarget != null && 
				this.editingTarget != evt.target && 
				this.editingTarget != evt.target.myparent) {
			var input = $(this.editingTarget).children("input")[0];
			var text = $(input).val();
			$(input).remove();

			var valueData = document.createElement("span");
			$(valueData).addClass("spanValue");
			$(valueData).text(text);

			if ($(this.editingTarget).hasClass("name")) {
				var icon = document.createElement("span");
				$(icon).addClass("removeIcon");
				$(this.editingTarget).append(icon);
			}

			$(this.editingTarget).removeClass("editing");
			$(this.editingTarget).append(valueData);
			valueData.myparent = this.editingTarget;
			this.editingTarget = null;
		}
	}
});

$(function() {
	jobEditView = new azkaban.JobEditView({
		el: $('#job-edit-pane')
	});
});
