Lebogang's final changes

Task_Data.txt

@@ -1 +1 @@
-[{"TaskId":1,"TaskName":"Test","TaskDescription":"Test"},{"TaskId":"2","TaskName":"Test2","TaskDescription":"Test2"}]
+{"5":{"TaskId":6,"TaskName":"Task 1","TaskDescription":"Testing if it will save accordingly"},"6":{"TaskId":7,"TaskName":"Task 2","TaskDescription":"Testing if update and delete work correctly"},"7":{"TaskId":8,"TaskName":"Task 4","TaskDescription":"Testing resetting of field values"},"8":{"TaskId":9,"TaskName":"Task 3","TaskDescription":"Testing adding again to see if the changes will work just fine"},"9":{"TaskId":10,"TaskName":"Task 5","TaskDescription":"Testing without the closing php tag"},"10":{"TaskId":11,"TaskName":"Task 6","TaskDescription":"Surely now everything works accordingly? "}}

index.php

@@ -78,31 +78,78 @@
         if (triggerElement.attr("id") == 'newTask') {
             modal.find('.modal-title').text('New Task');
             $('#deleteTask').hide();
+            setFieldValues();
             currentTaskId = -1;
         } else {
             modal.find('.modal-title').text('Task details');
             $('#deleteTask').show();
             currentTaskId = triggerElement.attr("id");
+            var taskNameElement = triggerElement.find('h4');
+            var taskDescriptionElement = triggerElement.find('p');
+
+            setFieldValues($(taskNameElement).text(), $(taskDescriptionElement).text());
+
             console.log('Task ID: '+triggerElement.attr("id"));
         }
     });
+
+    var setFieldValues = function(taskName, taskDescription) {
+        if (taskName === undefined) {
+            taskName = "";
+        }
+        if (taskDescription === undefined) {
+            taskDescription = "";
+        }
+        $("#InputTaskName").val(taskName);
+        $("#InputTaskDescription").val(taskDescription);
+    };
+
+    var handleSubmission = function(path, data) {
+        $.post(path, data, function (feedback) {
+            var message = feedback.message;
+            var messageClass = 'alert alert-danger';
+            if (feedback.success) {
+                messageClass = 'alert alert-success';
+                updateTaskList();
+            }
+
+            var messageBox = $('<div id="feedback-message" class="' + messageClass + '">' + message + '</div>');
+
+            $(".modal-body form").prepend(messageBox);
+            setTimeout(function() {
+                $("#feedback-message").remove();
+                setFieldValues();
+                $('#myModal').modal('hide');
+            }, 3000);
+
+        }, 'json');
+    };
+
     $('#saveTask').click(function() {
         //Assignment: Implement this functionality
-        alert('Save... Id:'+currentTaskId);
-        $('#myModal').modal('hide');
-        updateTaskList();
+        //alert('Save... Id:'+currentTaskId);
+
+        var taskName = $("#InputTaskName").val();
+        var taskDescription = $("#InputTaskDescription").val();
+
+        var data = {task_id:currentTaskId, task_name:taskName, task_description:taskDescription, action:'save'};
+        handleSubmission('update_task.php', data)
     });
+
     $('#deleteTask').click(function() {
         //Assignment: Implement this functionality
-        alert('Delete... Id:'+currentTaskId);
-        $('#myModal').modal('hide');
-        updateTaskList();
+        //alert('Delete... Id:'+currentTaskId);
+
+        var data = {task_id:currentTaskId, action:'delete'};
+        handleSubmission('update_task.php', data);
     });
+
     function updateTaskList() {
         $.post("list_tasks.php", function( data ) {
             $( "#TaskList" ).html( data );
         });
     }
+
     updateTaskList();
 </script>
 </html>

task.class.php

@@ -7,10 +7,11 @@ class Task {
     public $TaskName;
     public $TaskDescription;
     protected $TaskDataSource;
+
     public function __construct($Id = null) {
         $this->TaskDataSource = file_get_contents('Task_Data.txt');
         if (strlen($this->TaskDataSource) > 0)
-            $this->TaskDataSource = json_decode($this->TaskDataSource); // Should decode to an array of Task objects
+            $this->TaskDataSource = json_decode($this->TaskDataSource, true); // Should decode to an array of Task objects
         else
             $this->TaskDataSource = array(); // If it does not, then the data source is assumed to be empty and we create an empty array
 
@@ -19,29 +20,107 @@ public function __construct($Id = null) {
         if (!$this->LoadFromId($Id))
             $this->Create();
     }
+
     protected function Create() {
         // This function needs to generate a new unique ID for the task
         // Assignment: Generate unique id for the new task
-        $this->TaskId = $this->getUniqueId();
-        $this->TaskName = 'New Task';
-        $this->TaskDescription = 'New Description';
+        $this->setTaskId($this->getUniqueId());
+        $this->setTaskName('New Task');
+        $this->setDescription('New Description');
     }
+
     protected function getUniqueId() {
         // Assignment: Code to get new unique ID
-        return -1; // Placeholder return for now
+        if (!empty($this->TaskDataSource)) {
+            $highest = 0;
+            foreach($this->TaskDataSource as $dataSource) {
+                $highest = max($highest, $dataSource['TaskId']);
+            }
+            return ++$highest;
+        }
+        return 1; // Placeholder return for now
     }
+
     protected function LoadFromId($Id = null) {
-        if ($Id) {
-            // Assignment: Code to load details here...
-        } else
-            return null;
+        $Id = (int) $Id;
+        if ($Id && !empty($this->TaskDataSource)) {
+            foreach($this->TaskDataSource as $dataSource) {
+                if ($Id == $dataSource['TaskId']) {
+                    $this->setTaskId($dataSource['TaskId']);
+                    $this->setTaskName($dataSource['TaskName']);
+                    $this->setDescription($dataSource['TaskDescription']);
+
+                    return true;
+                }
+            }
+        }
+
+        return null;
     }
 
     public function Save() {
         //Assignment: Code to save task here
+        $key = $this->findArrayKey(true);
+        $this->TaskDataSource[$key]  = [
+            'TaskId'=>$this->getTaskId(),
+            'TaskName' =>$this->getTaskName(),
+            'TaskDescription' => $this->getDescription(),
+        ];
+
+        file_put_contents('Task_Data.txt', json_encode($this->TaskDataSource));
+    }
+
+    public function setTaskId($taskId) {
+        $this->TaskId = $taskId;
     }
+
+    public function setTaskName($taskName) {
+        $this->TaskName = $taskName;
+    }
+
+    public function setDescription($description) {
+        $this->TaskDescription = $description;
+    }
+
+    public function getTaskId() {
+        return $this->TaskId;
+    }
+
+    public function getTaskName() {
+        return $this->TaskName;
+    }
+
+    public function getDescription() {
+        return $this->TaskDescription;
+    }
+
+    public function findArrayKey($generateIfNotExists = false) {
+        $taskKey = -1;
+        if (!is_null($this->TaskId) && $this->TaskId > -1) {
+            foreach ($this->TaskDataSource as $key=>$dataSource) {
+                if ($this->TaskId == $dataSource['TaskId']) {
+                    $taskKey = $key;
+                    break;
+                }
+            }
+        }
+
+        if (-1 === $taskKey && $generateIfNotExists) {
+            $currentMaxKey = max(array_keys($this->TaskDataSource));
+            $taskKey = $currentMaxKey == 0 ?: $currentMaxKey + 1;
+        }
+        return $taskKey;
+    }
+
     public function Delete() {
         //Assignment: Code to delete task here
+        $deleted = false;
+        $key = $this->findArrayKey();
+        if ($key > -1) {
+            unset($this->TaskDataSource[$key]);
+            file_put_contents('Task_Data.txt', json_encode($this->TaskDataSource));
+            $deleted = true;
+        }
+        return $deleted;
     }
 }
-?>

update_task.php

@@ -1,7 +1,47 @@
 <?php
+header('Content-type:application/json;charset=utf-8');
 /**
  * This script is to be used to receive a POST with the object information and then either updates, creates or deletes the task object
  */
 require('Task.class.php');
 // Assignment: Implement this script
-?>
+
+$message = 'You either tried accessing this directly or submitted an invalid action. Please trying saving the form again';
+$success = false;
+
+if (isset($_POST)) {
+
+    $action = filter_input(INPUT_POST, 'action', FILTER_SANITIZE_STRING);
+    $taskId = filter_input(INPUT_POST, 'task_id', FILTER_SANITIZE_NUMBER_INT);
+    $taskClass = new Task($taskId);
+
+    switch ($action) {
+        case 'save' :
+
+            $taskName = filter_input(INPUT_POST, 'task_name', FILTER_SANITIZE_STRING);
+            $taskDescription = filter_input(INPUT_POST, 'task_description', FILTER_SANITIZE_STRING);
+
+            $taskClass->setTaskName($taskName);
+            $taskClass->setDescription($taskDescription);
+            $taskClass->Save();
+            $success = true;
+            $message = 'Task has been successfully created/updated';
+            break;
+
+        case 'delete' :
+            $deleted = $taskClass->Delete();
+            $message = "Something went wrong, couldn't delete task";
+            if ($deleted) {
+                $success = true;
+                $message = "Task has been successfully deleted";
+            }
+            break;
+
+        default :
+            $message = 'Unknown action selected';
+
+    }
+}
+
+echo json_encode(['message' => $message, 'success' => $success]);
+exit;