273 lines
12 KiB
PHP
Executable File
273 lines
12 KiB
PHP
Executable File
<?php
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include('../inc/check_login.php');
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require_once('../inc/db.php');
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$message = '';
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$message_type = '';
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$edit_mode = false;
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$edit_meeting = null;
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// Nur Admins haben Zugriff
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if ($_SESSION['role'] !== 'admin') {
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die("Zugriff nur für Admins");
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}
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// --- Funktion zur gewichteten zufälligen Farbauswahl ---
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function get_weighted_random_color($conn)
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{
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// 1. Alle Farben abrufen
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$all_colors = [];
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$result_all = mysqli_query($conn, "SELECT id FROM colors");
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while ($row = mysqli_fetch_assoc($result_all)) {
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$all_colors[] = $row['id'];
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}
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if (empty($all_colors)) {
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return null; // Keine Farben vorhanden
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}
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// 2. Anzahl der Farben als "Sperrzeit"
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$color_count = count($all_colors);
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// 3. Kürzlich verwendete Farben abrufen
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$used_colors_id = [];
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$stmt = mysqli_prepare($conn, "SELECT color_id FROM meetings ORDER BY meeting_date DESC LIMIT ?");
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mysqli_stmt_bind_param($stmt, "i", $color_count);
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mysqli_stmt_execute($stmt);
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$result_used = mysqli_stmt_get_result($stmt);
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while ($row = mysqli_fetch_assoc($result_used)) {
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$used_colors_id[] = $row['color_id'];
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}
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mysqli_stmt_close($stmt);
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// 4. Farben-Pool erstellen
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$color_pool = [];
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foreach ($all_colors as $color_id) {
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if (in_array($color_id, $used_colors_id)) {
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// Kürzlich verwendete Farben haben 1x Chance
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$color_pool[] = $color_id;
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} else {
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// Andere Farben haben 3x Chance
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$color_pool[] = $color_id;
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$color_pool[] = $color_id;
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$color_pool[] = $color_id;
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}
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}
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// 5. Zufällige Farbe aus dem Pool auswählen
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shuffle($color_pool);
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return $color_pool[0];
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}
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// --- Logik zum Löschen und Bearbeiten von Terminen ---
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// Aktion Löschen
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if (isset($_GET['action']) && $_GET['action'] == 'delete' && isset($_GET['id'])) {
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$id = $_GET['id'];
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$stmt = mysqli_prepare($conn, "DELETE FROM meetings WHERE id = ?");
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mysqli_stmt_bind_param($stmt, "i", $id);
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if (mysqli_stmt_execute($stmt)) {
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$message = "Termin erfolgreich gelöscht!";
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$message_type = 'success';
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} else {
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$message = "Fehler beim Löschen des Termins.";
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$message_type = 'danger';
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}
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mysqli_stmt_close($stmt);
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}
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// Aktion Bearbeiten (Formular laden)
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if (isset($_GET['action']) && $_GET['action'] == 'edit' && isset($_GET['id'])) {
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$id = $_GET['id'];
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$stmt = mysqli_prepare($conn, "SELECT id, meeting_date, color_id FROM meetings WHERE id = ?");
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mysqli_stmt_bind_param($stmt, "i", $id);
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mysqli_stmt_execute($stmt);
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$result = mysqli_stmt_get_result($stmt);
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$edit_meeting = mysqli_fetch_assoc($result);
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mysqli_stmt_close($stmt);
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$edit_mode = true;
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// Datum und Uhrzeit für die Formularfelder aufteilen
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$edit_date_time = new DateTime($edit_meeting['meeting_date']);
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$edit_meeting['meeting_date_only'] = $edit_date_time->format('Y-m-d');
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$edit_meeting['meeting_time_only'] = $edit_date_time->format('H:i');
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}
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// --- Logik zum Hinzufügen oder Speichern von Terminen (POST) ---
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if ($_SERVER["REQUEST_METHOD"] == "POST") {
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$meeting_date_only = $_POST['meeting_date'];
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$meeting_time_only = $_POST['meeting_time'] ?? '12:00'; // Standardwert 12:00 Uhr
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$meeting_date = $meeting_date_only . ' ' . $meeting_time_only;
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$color_id = $_POST['color_id'];
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$id = $_POST['id'] ?? null;
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if ($id) { // Update-Logik
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$stmt = mysqli_prepare($conn, "UPDATE meetings SET meeting_date = ?, color_id = ? WHERE id = ?");
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mysqli_stmt_bind_param($stmt, "sii", $meeting_date, $color_id, $id);
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if (mysqli_stmt_execute($stmt)) {
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$message = "Termin erfolgreich aktualisiert!";
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$message_type = 'success';
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} else {
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$message = "Fehler beim Aktualisieren des Termins.";
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$message_type = 'danger';
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}
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mysqli_stmt_close($stmt);
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} else { // Insert-Logik
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$stmt = mysqli_prepare($conn, "INSERT INTO meetings (meeting_date, color_id) VALUES (?, ?)");
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mysqli_stmt_bind_param($stmt, "si", $meeting_date, $color_id);
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if (mysqli_stmt_execute($stmt)) {
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$message = "Neuer Termin erfolgreich hinzugefügt!";
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$message_type = 'success';
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} else {
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$message = "Fehler beim Hinzufügen des Termins.";
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$message_type = 'danger';
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}
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mysqli_stmt_close($stmt);
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}
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}
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// --- Nächste 2 Donnerstage automatisch hinzufügen (mit 12:00 Uhr) ---
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$date = new DateTime('now');
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$date->modify('next thursday');
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for ($i = 0; $i < 2; $i++) {
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$next_thursday = $date->format('Y-m-d') . ' 12:00:00';
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$stmt = mysqli_prepare($conn, "SELECT id FROM meetings WHERE meeting_date = ?");
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mysqli_stmt_bind_param($stmt, "s", $next_thursday);
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mysqli_stmt_execute($stmt);
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mysqli_stmt_store_result($stmt);
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if (mysqli_stmt_num_rows($stmt) == 0) {
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$color_id = get_weighted_random_color($conn);
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if ($color_id) {
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$stmt_insert = mysqli_prepare($conn, "INSERT INTO meetings (meeting_date, color_id) VALUES (?, ?)");
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mysqli_stmt_bind_param($stmt_insert, "si", $next_thursday, $color_id);
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mysqli_stmt_execute($stmt_insert);
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mysqli_stmt_close($stmt_insert);
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}
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}
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mysqli_stmt_close($stmt);
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$date->modify('+1 week');
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}
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// --- Termine und alle Farben abrufen (für Übersicht und Formular) ---
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$all_colors = [];
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$result = mysqli_query($conn, "SELECT id, name, hex_code FROM colors ORDER BY name");
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while ($row = mysqli_fetch_assoc($result)) {
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$all_colors[] = $row;
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}
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$meetings = [];
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$result = mysqli_query($conn, "SELECT m.id, m.meeting_date, m.created_at, c.name AS color_name, c.hex_code FROM meetings m JOIN colors c ON m.color_id = c.id ORDER BY m.meeting_date");
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while ($row = mysqli_fetch_assoc($result)) {
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$meetings[] = $row;
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}
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require_once '../inc/header.php';
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?>
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<div class="container mt-5">
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<h2 class="mb-4">Terminverwaltung</h2>
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<?php if ($message) : ?>
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<div id="status-message" class="alert alert-<?php echo $message_type; ?> alert-dismissible fade show" role="alert">
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<?php echo htmlspecialchars($message); ?>
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<button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
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</div>
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<?php endif; ?>
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<div class="card shadow mb-4">
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<div class="card-header bg-primary text-white">
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<h4 class="mb-0"><?php echo $edit_mode ? 'Termin bearbeiten' : 'Neuen Termin hinzufügen'; ?></h4>
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</div>
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<div class="card-body">
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<form action="meetings.php" method="post">
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<?php if ($edit_mode): ?>
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<input type="hidden" name="id" value="<?php echo htmlspecialchars($edit_meeting['id']); ?>">
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<?php endif; ?>
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<div class="row g-1 align-items-end">
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<div class="col-md-4">
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<label for="meeting_date" class="form-label">Datum</label>
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<input type="date" class="form-control" id="meeting_date" name="meeting_date" value="<?php echo htmlspecialchars($edit_meeting['meeting_date_only'] ?? ''); ?>" required>
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<div class="form-text" style="visibility: hidden;"> </div>
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</div>
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<div class="col-md-4">
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<label for="meeting_time" class="form-label">Uhrzeit</label>
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<input type="time" class="form-control" id="meeting_time" name="meeting_time" value="<?php echo htmlspecialchars($edit_meeting['meeting_time_only'] ?? '12:00'); ?>" required>
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<div class="form-text" style="visibility: hidden;"> </div>
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</div>
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<div class="col-md-4">
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<label for="color_id" class="form-label">Farbe</label>
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<select class="form-select" id="color_id" name="color_id" required>
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<?php foreach ($all_colors as $color): ?>
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<option value="<?php echo htmlspecialchars($color['id']); ?>" <?php echo (($edit_meeting['color_id'] ?? '') == $color['id']) ? 'selected' : ''; ?>>
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<?php echo htmlspecialchars($color['name']); ?>
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</option>
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<?php endforeach; ?>
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</select>
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<div class="form-text" style="visibility: hidden;"> </div>
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</div>
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<div class="col-12 d-flex justify-content-start">
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<div class="d-flex w-100">
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<button type="submit" class="btn btn-<?php echo $edit_mode ? 'success' : 'primary'; ?> w-auto me-2">
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<?php echo $edit_mode ? 'Speichern' : 'Hinzufügen'; ?>
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</button>
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<?php if ($edit_mode): ?>
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<a href="meetings.php" class="btn btn-secondary w-auto">Abbrechen</a>
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<?php endif; ?>
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</div>
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</div>
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</div>
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</form>
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</div>
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</div>
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<div class="card shadow">
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<div class="card-header bg-secondary text-white">
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<h4 class="mb-0">Übersicht der Termine</h4>
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</div>
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<div class="card-body">
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<?php if (empty($meetings)): ?>
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<p class="text-muted text-center">Es sind noch keine Termine vorhanden.</p>
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<?php else: ?>
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<div class="table-responsive">
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<table class="table table-striped table-hover">
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<thead>
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<tr>
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<th>Datum & Uhrzeit</th>
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<th>Farbe</th>
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<th>Aktionen</th>
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</tr>
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</thead>
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<tbody>
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<?php foreach ($meetings as $meeting): ?>
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<tr>
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<td><?php echo date('d.m.Y H:i', strtotime($meeting['meeting_date'])); ?></td>
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<td>
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<div class="d-flex align-items-center">
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<div class="color-preview rounded me-2" style="background-color: <?php echo htmlspecialchars($meeting['hex_code']); ?>;"></div>
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<span><?php echo htmlspecialchars($meeting['color_name']); ?></span>
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</div>
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</td>
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<td>
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<a href="meetings.php?action=edit&id=<?php echo htmlspecialchars($meeting['id']); ?>" class="text-dark me-1 text-decoration-none" data-bs-toggle="tooltip" data-bs-placement="top" title="Bearbeiten">
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<span class="material-icons">mode_edit_outline</span>
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</a>
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<a href="meetings.php?action=delete&id=<?php echo htmlspecialchars($meeting['id']); ?>" class="text-danger text-decoration-none" onclick="return confirm('Sind Sie sicher, dass Sie diesen Termin löschen möchten?');" data-bs-toggle="tooltip" data-bs-placement="top" title="Löschen">
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<span class="material-icons">delete_outline</span>
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</a>
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</td>
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</tr>
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<?php endforeach; ?>
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</tbody>
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</table>
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</div>
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<?php endif; ?>
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</div>
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</div>
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</div>
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<?php include('../inc/footer.php'); ?>
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