implement API

includes/api.php

@@ -0,0 +1,133 @@
+<?php
+if (!defined('ABSPATH')) exit;
+
+function kc_api_permission_check() {
+    if (!is_user_logged_in()) {
+        return new WP_Error(
+            'kc_api_auth_required',
+            'Authentifizierung erforderlich.',
+            ['status' => 401]
+        );
+    }
+
+    if (!current_user_can('manage_options')) {
+        return new WP_Error(
+            'kc_api_forbidden',
+            'Keine Berechtigung für diese API.',
+            ['status' => 403]
+        );
+    }
+
+    return true;
+}
+
+function kc_api_get_wahlen(WP_REST_Request $request) {
+    global $wpdb;
+    $prefix = $wpdb->prefix;
+
+    $rows = $wpdb->get_results("SELECT id, name, anzahl_einheiten, freigegeben FROM {$prefix}kc_wahlen WHERE deleted=0 ORDER BY id DESC");
+
+    $data = [];
+    foreach ((array) $rows as $row) {
+        $data[] = [
+            'id' => intval($row->id),
+            'name' => (string) $row->name,
+            'anzahl_einheiten' => max(1, intval($row->anzahl_einheiten)),
+            'freigegeben' => intval($row->freigegeben) === 1,
+        ];
+    }
+
+    return rest_ensure_response([
+        'success' => true,
+        'count' => count($data),
+        'items' => $data,
+    ]);
+}
+
+function kc_api_get_wahl_zuteilungen(WP_REST_Request $request) {
+    global $wpdb;
+    $prefix = $wpdb->prefix;
+
+    $wahl_id = intval($request->get_param('id'));
+    if ($wahl_id <= 0) {
+        return new WP_Error('kc_api_invalid_id', 'Ungültige Wahl-ID.', ['status' => 400]);
+    }
+
+    $wahl = $wpdb->get_row($wpdb->prepare(
+        "SELECT id, name, anzahl_einheiten FROM {$prefix}kc_wahlen WHERE id=%d AND deleted=0",
+        $wahl_id
+    ));
+
+    if (!$wahl) {
+        return new WP_Error('kc_api_wahl_not_found', 'Wahl nicht gefunden.', ['status' => 404]);
+    }
+
+    $rows = $wpdb->get_results($wpdb->prepare(
+        "SELECT z.id, z.teilnehmer_id, z.vorname, z.nachname, z.phase, z.workshop_id, z.wunsch_rang, ws.name AS workshop_name
+         FROM {$prefix}kc_zuteilung z
+         LEFT JOIN {$prefix}kc_workshops ws ON ws.id = z.workshop_id
+         WHERE z.wahl_id = %d
+         ORDER BY z.phase ASC, z.nachname ASC, z.vorname ASC",
+        $wahl_id
+    ));
+
+    $items = [];
+    foreach ((array) $rows as $row) {
+        $items[] = [
+            'id' => intval($row->id),
+            'teilnehmer_id' => intval($row->teilnehmer_id),
+            'vorname' => (string) $row->vorname,
+            'nachname' => (string) $row->nachname,
+            'phase' => intval($row->phase),
+            'workshop_id' => $row->workshop_id !== null ? intval($row->workshop_id) : null,
+            'workshop_name' => $row->workshop_name !== null ? (string) $row->workshop_name : null,
+            'wunsch_rang' => $row->wunsch_rang !== null ? intval($row->wunsch_rang) : null,
+        ];
+    }
+
+    return rest_ensure_response([
+        'success' => true,
+        'wahl' => [
+            'id' => intval($wahl->id),
+            'name' => (string) $wahl->name,
+            'anzahl_einheiten' => max(1, intval($wahl->anzahl_einheiten)),
+        ],
+        'count' => count($items),
+        'items' => $items,
+    ]);
+}
+
+add_action('rest_api_init', function() {
+    register_rest_route('kc-internal/v1', '/wahlen', [
+        'methods' => WP_REST_Server::READABLE,
+        'callback' => 'kc_api_get_wahlen',
+        'permission_callback' => 'kc_api_permission_check',
+    ]);
+
+    register_rest_route('kc-internal/v1', '/wahlen/(?P<id>\d+)/zuteilungen', [
+        'methods' => WP_REST_Server::READABLE,
+        'callback' => 'kc_api_get_wahl_zuteilungen',
+        'permission_callback' => 'kc_api_permission_check',
+        'args' => [
+            'id' => [
+                'validate_callback' => function($param) {
+                    return is_numeric($param) && intval($param) > 0;
+                }
+            ]
+        ],
+    ]);
+});
+
+add_filter('rest_endpoints', function($endpoints) {
+    if (current_user_can('manage_options')) {
+        return $endpoints;
+    }
+
+    foreach ($endpoints as $route => $handlers) {
+        if (strpos($route, '/kc-internal/v1/') === 0) {
+            unset($endpoints[$route]);
+        }
+    }
+
+    return $endpoints;
+});