<?php
require 'classes/master.php'; //should be at top of every page

/*  So far, the entire page works based on sessions.
 *  We want it to load the database stuff into the session on user load, and only write back to database when you exit the page.
 *  Is this possible with the current db model?
 * 
 */

// Reset session, for debug purposes only!
if (isset($_POST['resetSession'])) {
    unset($_SESSION['steps']);
    $_SESSION['selectedStep'] = null;
}

// Clear entire pipeline, confirm checkbox checked!
if (isset($_POST['clearPipeline']) && isset($_POST['confirmClear'])) {
    unset($_SESSION['steps']);
    $_SESSION['steps'] = array();
}

// Upon first page load, generate a placeholder array of Steps. (Only string at the moment!)
if (!isset($_SESSION['steps'])) {
    $_SESSION['steps'] = array("Questionnaire 1", "Questionnaire 2", "Notice 1", "Application 1", "Dashboard 1");
    $_SESSION['selectedStep'] = null;
}

// if user clicked "remove" button
if (isset($_POST['removeStep'])) {
    if (isset($_POST['pipelineContents'])) {        // if a step has been selected
        $toBeRemoved = $_POST['pipelineContents'];
        $tempArray = array();
        foreach ($_SESSION['steps'] as $step) {
            if ($step != $toBeRemoved) {
                $tempArray[] = $step;
            }
        }
        $_SESSION['steps'] = $tempArray;
        unset($tempArray);
        unset($toBeRemoved);
        $_SESSION['selectedStep'] = null;
    }
}

/*
 * 
 *  Object creating code
 *  
 */

//  Questionnaire
if (isset($_POST['createQuestionnaire'])) {
    $n = 1;
    while (in_array("Questionnaire $n", $_SESSION['steps'])) {
        $n++;
    }
    $_SESSION['steps'][] = "Questionnaire $n";
    $_SESSION['selectedStep'] = "Questionnaire $n";
}

//  Notice
if (isset($_POST['createNotice'])) {
    $n = 1;
    while (in_array("Notice $n", $_SESSION['steps'])) {
        $n++;
    }
    $_SESSION['steps'][] = "Notice $n";
    $_SESSION['selectedStep'] = "Notice $n";
}

// Application
if (isset($_POST['createApplication'])) {
    $n = 1;
    while (in_array("Application $n", $_SESSION['steps'])) {
        $n++;
    }
    $_SESSION['steps'][] = "Application $n";
    $_SESSION['selectedStep'] = "Application $n";
}

//  Dashboard
if (isset($_POST['createDashboard'])) {
    $n = 1;
    while (in_array("Dashboard $n", $_SESSION['steps'])) {
        $n++;
    }
    $_SESSION['steps'][] = "Dashboard $n";
    $_SESSION['selectedStep'] = "Dashboard $n";
}

/*
 * 
 * Move up/down code
 * 
 */


if (isset($_POST['moveUp'])) {          // if user clicked "Move up" button
    if (isset($_POST['pipelineContents'])) {     // if user has selected a pipeline step
        $arrayCopy = $_SESSION['steps'];     // copy session contents to local variable, to prevent messing up the session by accident
        $key = array_search($_POST['pipelineContents'], $arrayCopy);     // find key of target entry in array
        $_SESSION['selectedStep'] = $arrayCopy[$key];
        moveEntry($arrayCopy, $key, -1);
        $_SESSION['steps'] = $arrayCopy;
    }
}

if (isset($_POST['moveDown'])) {          // if user clicked "Move up" button
    if (isset($_POST['pipelineContents'])) {     // if user has selected a pipeline step
        $arrayCopy = $_SESSION['steps'];     // copy session contents to local variable, to prevent messing up the session by accident
        $key = array_search($_POST['pipelineContents'], $arrayCopy);     // find key of target entry in array
        $_SESSION['selectedStep'] = $arrayCopy[$key];
        moveEntry($arrayCopy, $key, 1);
        $_SESSION['steps'] = $arrayCopy;
    }
}

function moveEntry(&$array, $key, $dir) {
    if ($dir == -1) {   // move up
        if ($key > 0) {
            $reverseArray = array_reverse(array_slice($array, $key - 1, 2, true));   // make a reversed array of the two entries, preserving keys
            array_splice($array, $key - 1, 2, $reverseArray);    // replace the given range in the oldArray with the reversed Array
        }
    } else if ($dir == 1) {   // move down
        if ($key < count($array) - 1) {
            $reverseArray = array_reverse(array_slice($array, $key, 2, true));   // make a reversed array of the two entries, preserving keys
            array_splice($array, $key, 2, $reverseArray);    // replace the given range in the oldArray with the reversed Array
        }
    }
}

/*
 * 
 *  Edit code
 * 
 */

if (isset($_POST['editStep'])) {
    editStep($_POST['pipelineContents']);
}

function editStep($step) {
    $_SESSION['activeStep'] = $step;
    switch (strtolower(substr($step, 0, strlen($step) - 2))) {
        case "questionnaire":
            redirect("editQuestionnaire.php?UID=$step->uid");
            break;
        case "notice":
            redirect("editNotice.php?UID=$step->uid");
            break;
        case "application":
            redirect("editApplication.php?UID=$step->uid");
            break;
        case "dashboard":
            redirect("editDashboard.php?UID=$step->uid");
            break;
        default:
            die("Invalid or no step type selected!");
            break;
    }
}
?>
<!--
To change this template, choose Tools | Templates
and open the template in the editor.
-->
<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title></title>
        <?php new StyleSheet("awesome"); ?>
        <script type="text/javascript" src="js/menu.js"></script>
        <script type="text/javascript" src="js/jquery.js"></script>
        <script type="text/javascript" src="js/editorScripts.js"></script>
    </head>
    <body onLoad="IsItemSelected(document.mainForm.pipelineContents, document.mainForm.editStep);">
        <div id="header">
            <?php new Logo(); ?>
        </div>

        <div id="wrapper">
            <div id="content">
                <form name ="mainForm" action="pipelineEditor_1.php" method="POST">
                    <fieldset>
                        <select name="pipelineContents" style="width: 300px;" size="8" onChange="IsItemSelected(this, document.mainForm.editStep);">
                            <?php
                            foreach ($_SESSION['steps'] as $step) {
                                echo '<option value="' . $step . '" ';
                                if ($step == $_SESSION['selectedStep']) {
                                    echo 'selected ="selected"';
                                }
                                echo '>' . $step . '</option>' . "\n";
                            }
                            ?>


                        </select>
                        <input type="submit" name="editStep" value="Edit" disabled="true"/>
                        <input type="submit" name="removeStep" value="Remove" />
                        <input type="submit" name="moveUp" value="Move up" />
                        <input type="submit" name="moveDown" value="Move down" />
                        <input type="submit" name="clearPipeline" value="Clear pipeline" disabled="true"/>
                        <input type="checkbox" name="confirmClear" onClick="IsCheckEnabled(this, document.mainForm.clearPipeline)"/> Really delete all?


                    </fieldset>

                    <fieldset>
                        Add:
                        <input type="submit" name="createQuestionnaire" value="Questionnaire" />
                        <input type="submit" name ="createNotice" value="Notice" />
                        <input type="submit" name="createApplication" value="Application" />
                        <input type="submit" name="createDashboard" value="Dashboard" />
                    </fieldset>

                    <fieldset>
                        <label>Debug</label>
                        <input type="submit" name="resetSession" value="Reset Session" />
                    </fieldset>
                </form>
            </div>
    </body>
</html>