Merge pull request 'Dev nieuw' (#70) from dev into main

Reviewed-on: #70

admin.php

@@ -438,6 +438,7 @@ $appConfig = microsoft_get_app_config();
 $companyJiraDomain = jira_get_company_domain();
 $workdaySettings = get_workday_settings();
 $aiSettings = get_ai_settings();
+$aiUsageStats = get_ai_usage_stats();
 $sessionIdleTimeout = get_session_idle_timeout();
 $calendarBlockReasons = get_calendar_block_reasons();
 $brainstormCategories = get_brainstorm_categories();
@@ -1539,8 +1540,7 @@ require_once __DIR__ . '/includes/header.php';
                             <i data-lucide="sparkles" class="w-6 h-6"></i>
                         </div>
                         <div>
-                            <h2 class="text-lg font-bold text-slate-900 dark:text-white tracking-tight">AI & Brainstorm Co-Pilot (Google Gemini Pro)</h2>
+                            <h2 class="text-lg font-bold text-slate-900 dark:text-white tracking-tight">AI-Co-pilot</h2>
-                            <p class="text-xs text-slate-500 dark:text-slate-400">Intelligente assistentie voor post-it ontleding, categorisatie, ideegeneratie en slimme planning</p>
                         </div>
                     </div>
                     <div class="flex items-center space-x-2">
@@ -1555,6 +1555,54 @@ require_once __DIR__ . '/includes/header.php';
                     </div>
                 </div>
 
+                <!-- AI Verbruik & Statistieken Dashboard -->
+                <div class="p-4 rounded-2xl bg-slate-50/80 dark:bg-[#0c0f17]/90 border border-slate-200/80 dark:border-slate-800/80 space-y-3">
+                    <div class="flex items-center justify-between">
+                        <div class="flex items-center space-x-2">
+                            <i data-lucide="bar-chart-2" class="w-4 h-4 text-indigo-500"></i>
+                            <span class="text-xs font-bold text-slate-800 dark:text-slate-200 uppercase tracking-wider">AI Verbruik</span>
+                        </div>
+                        <?php if (!empty($aiUsageStats['last_used_at'])): ?>
+                            <span class="text-[11px] text-slate-400">Laatst gebruikt: <?= htmlspecialchars(date('d-m-Y H:i', strtotime($aiUsageStats['last_used_at']))) ?></span>
+                        <?php else: ?>
+                            <span class="text-[11px] text-slate-400 italic">Nog geen verbruik geregistreerd</span>
+                        <?php endif; ?>
+                    </div>
+
+                    <div class="grid grid-cols-2 sm:grid-cols-4 gap-3">
+                        <div class="p-3 rounded-xl bg-white dark:bg-slate-900 border border-slate-200/60 dark:border-slate-800 shadow-2xs">
+                            <span class="block text-[10px] uppercase font-bold text-slate-400">Totaal Aanroepen</span>
+                            <span class="text-lg font-black text-slate-900 dark:text-white"><?= number_format((int)($aiUsageStats['total_requests'] ?? 0), 0, ',', '.') ?></span>
+                        </div>
+
+                        <div class="p-3 rounded-xl bg-white dark:bg-slate-900 border border-slate-200/60 dark:border-slate-800 shadow-2xs">
+                            <span class="block text-[10px] uppercase font-bold text-slate-400">Totaal Tokens</span>
+                            <span class="text-lg font-black text-indigo-600 dark:text-indigo-400"><?= number_format((int)($aiUsageStats['total_tokens'] ?? 0), 0, ',', '.') ?></span>
+                        </div>
+
+                        <div class="p-3 rounded-xl bg-white dark:bg-slate-900 border border-slate-200/60 dark:border-slate-800 shadow-2xs">
+                            <span class="block text-[10px] uppercase font-bold text-slate-400">Prompt / Invoer</span>
+                            <span class="text-lg font-black text-slate-700 dark:text-slate-300"><?= number_format((int)($aiUsageStats['total_prompt_tokens'] ?? 0), 0, ',', '.') ?></span>
+                        </div>
+
+                        <div class="p-3 rounded-xl bg-white dark:bg-slate-900 border border-slate-200/60 dark:border-slate-800 shadow-2xs">
+                            <span class="block text-[10px] uppercase font-bold text-slate-400">Output / Gegenereerd</span>
+                            <span class="text-lg font-black text-teal-600 dark:text-teal-400"><?= number_format((int)($aiUsageStats['total_completion_tokens'] ?? 0), 0, ',', '.') ?></span>
+                        </div>
+                    </div>
+
+                    <?php if (!empty($aiUsageStats['by_model'])): ?>
+                    <div class="pt-2 flex flex-wrap items-center gap-2 text-[11px] border-t border-slate-200/40 dark:border-slate-800/40">
+                        <span class="font-semibold text-slate-500 dark:text-slate-400">Per model:</span>
+                        <?php foreach ($aiUsageStats['by_model'] as $mName => $mCount): ?>
+                            <span class="px-2 py-0.5 rounded-md bg-white dark:bg-slate-800 text-slate-700 dark:text-slate-300 border border-slate-200 dark:border-slate-700">
+                                <strong><?= htmlspecialchars((string)$mName) ?></strong>: <?= (int)$mCount ?>x
+                            </span>
+                        <?php endforeach; ?>
+                    </div>
+                    <?php endif; ?>
+                </div>
+
                 <!-- ZERO-DATA LEAKAGE PRIVACY FIREWALL BANNER -->
                 <div class="p-3.5 rounded-2xl bg-emerald-50/80 dark:bg-emerald-950/20 border border-emerald-200/80 dark:border-emerald-800/40 flex items-start space-x-3">
                     <div class="w-8 h-8 rounded-xl bg-emerald-100 dark:bg-emerald-900/40 text-emerald-700 dark:text-emerald-400 flex items-center justify-center flex-shrink-0 mt-0.5">

auth/login.php

@@ -34,7 +34,7 @@ if ($currentUser) {
 $error = null;
 $infoMessage = null;
 if (isset($_GET['expired'])) {
-    $infoMessage = "Uw sessie is beeïndigd. Log opnieuw in om verder te gaan.";
+    $infoMessage = "Uw sessie is beeïndigd";
 }
 if (isset($_GET['revoked'])) {
     $infoMessage = "Uw sessie is op afstand beëindigd of ingetrokken. Log opnieuw in om verder te gaan.";

includes/ai.php

@@ -337,12 +337,23 @@ function fociz_ai_chat_gemini(array $messages, array $options, array $aiSettings
         }
     }
 
+    $promptTokens = (int)($response['json']['usageMetadata']['promptTokenCount'] ?? 0);
+    $completionTokens = (int)($response['json']['usageMetadata']['candidatesTokenCount'] ?? 0);
+    if ($promptTokens === 0 && $completionTokens === 0) {
+        // Schatting obv lengte indien niet geretourneerd
+        $promptTokens = max(1, (int)(strlen(json_encode($payload)) / 4));
+        $completionTokens = max(1, (int)(strlen($cleanContent) / 4));
+    }
+
     return [
         'success'           => true,
         'content'           => $cleanContent,
         'json'              => $parsedJson,
         'model'             => $successfulModel,
         'provider'          => 'gemini',
+        'prompt_tokens'     => $promptTokens,
+        'completion_tokens' => $completionTokens,
+        'total_tokens'      => ($promptTokens + $completionTokens),
     ];
 }
 
@@ -414,12 +425,22 @@ function fociz_ai_chat_openai(array $messages, array $options, array $aiSettings
         $parsedJson = json_decode($rawContent, true);
     }
 
+    $promptTokens = (int)($response['json']['usage']['prompt_tokens'] ?? 0);
+    $completionTokens = (int)($response['json']['usage']['completion_tokens'] ?? 0);
+    if ($promptTokens === 0 && $completionTokens === 0) {
+        $promptTokens = max(1, (int)(strlen(json_encode($payload)) / 4));
+        $completionTokens = max(1, (int)(strlen($rawContent) / 4));
+    }
+
     return [
         'success'           => true,
         'content'           => $rawContent,
         'json'              => $parsedJson,
         'model'             => $response['json']['model'] ?? $model,
         'provider'          => 'openai',
+        'prompt_tokens'     => $promptTokens,
+        'completion_tokens' => $completionTokens,
+        'total_tokens'      => ($promptTokens + $completionTokens),
     ];
 }
 
@@ -452,10 +473,21 @@ function fociz_ai_chat(array $messages, array $options = []): array {
 
     // Routering: als provider gemini is of model gemini bevat, stuur naar Google Gemini
     if ($provider === 'gemini' || strpos($model, 'gemini') !== false) {
-        return fociz_ai_chat_gemini($messages, $options, $aiSettings);
+        $res = fociz_ai_chat_gemini($messages, $options, $aiSettings);
+    } else {
+        $res = fociz_ai_chat_openai($messages, $options, $aiSettings);
     }
 
-    return fociz_ai_chat_openai($messages, $options, $aiSettings);
+    // Verbruiksstatistieken registreren bij geslaagde aanroep
+    if (!empty($res['success'])) {
+        $usedProvider = $res['provider'] ?? $provider;
+        $usedModel = $res['model'] ?? $model;
+        $pTokens = (int)($res['prompt_tokens'] ?? 0);
+        $cTokens = (int)($res['completion_tokens'] ?? 0);
+        record_ai_usage($usedProvider, $usedModel, $pTokens, $cTokens, $userId);
+    }
+
+    return $res;
 }
 
 /**

includes/settings.php

@@ -259,4 +259,79 @@ function get_brainstorm_categories(): array {
     return $defaultCategories;
 }
 
+/**
+ * Registreert AI verbruiksstatistieken (aanroepen, tokens, provider/model)
+ */
+function record_ai_usage(string $provider, string $model, int $promptTokens = 0, int $completionTokens = 0, ?int $userId = null): void {
+    try {
+        $stats = get_system_setting('ai_usage_stats', [
+            'total_requests' => 0,
+            'total_prompt_tokens' => 0,
+            'total_completion_tokens' => 0,
+            'total_tokens' => 0,
+            'last_used_at' => null,
+            'by_provider' => [],
+            'by_model' => [],
+            'by_date' => [],
+        ]);
+
+        $stats['total_requests'] = (int)($stats['total_requests'] ?? 0) + 1;
+        $stats['total_prompt_tokens'] = (int)($stats['total_prompt_tokens'] ?? 0) + $promptTokens;
+        $stats['total_completion_tokens'] = (int)($stats['total_completion_tokens'] ?? 0) + $completionTokens;
+        $stats['total_tokens'] = (int)($stats['total_tokens'] ?? 0) + ($promptTokens + $completionTokens);
+        $stats['last_used_at'] = date('Y-m-d H:i:s');
+
+        // Per provider
+        if (!isset($stats['by_provider'][$provider])) {
+            $stats['by_provider'][$provider] = 0;
+        }
+        $stats['by_provider'][$provider]++;
+
+        // Per model
+        if (!isset($stats['by_model'][$model])) {
+            $stats['by_model'][$model] = 0;
+        }
+        $stats['by_model'][$model]++;
+
+        // Per datum
+        $today = date('Y-m-d');
+        if (!isset($stats['by_date'][$today])) {
+            $stats['by_date'][$today] = ['requests' => 0, 'tokens' => 0];
+        }
+        $stats['by_date'][$today]['requests']++;
+        $stats['by_date'][$today]['tokens'] += ($promptTokens + $completionTokens);
+
+        // Maximaal 30 dagen historiek
+        if (count($stats['by_date']) > 30) {
+            ksort($stats['by_date']);
+            $stats['by_date'] = array_slice($stats['by_date'], -30, 30, true);
+        }
+
+        set_system_setting('ai_usage_stats', $stats);
+    } catch (Throwable $e) {
+        error_log("record_ai_usage fout: " . $e->getMessage());
+    }
+}
+
+/**
+ * Haalt de AI verbruiksstatistieken op
+ */
+function get_ai_usage_stats(): array {
+    $stats = get_system_setting('ai_usage_stats', null);
+    if (!is_array($stats)) {
+        return [
+            'total_requests' => 0,
+            'total_prompt_tokens' => 0,
+            'total_completion_tokens' => 0,
+            'total_tokens' => 0,
+            'last_used_at' => null,
+            'by_provider' => [],
+            'by_model' => [],
+            'by_date' => [],
+        ];
+    }
+    return $stats;
+}
+
+