feat: add timezone setting to admin panel

admin_company_profile.php

@@ -14,6 +14,7 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
     $companyPhone = trim($_POST['company_phone'] ?? '');
     $companyAddress = trim($_POST['company_address'] ?? '');
     $platformCharge = trim($_POST['platform_charge_percentage'] ?? '0');
+    $timezone = trim($_POST['timezone'] ?? 'UTC');
 
     $updates = [
         'company_name' => $companyName,
@@ -21,6 +22,7 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
         'company_phone' => $companyPhone,
         'company_address' => $companyAddress,
         'platform_charge_percentage' => $platformCharge,
+        'timezone' => $timezone,
         'terms_en' => trim($_POST['terms_en'] ?? ''),
         'terms_ar' => trim($_POST['terms_ar'] ?? ''),
         'privacy_en' => trim($_POST['privacy_en'] ?? ''),
@@ -80,6 +82,7 @@ $currentEmail = $settings['company_email'] ?? '';
 $currentPhone = $settings['company_phone'] ?? '';
 $currentAddress = $settings['company_address'] ?? '';
 $currentPlatformCharge = $settings['platform_charge_percentage'] ?? '0';
+$currentTimezone = $settings['timezone'] ?? 'UTC';
 $currentLogo = $settings['logo_path'] ?? '';
 $currentFavicon = $settings['favicon_path'] ?? '';
 $currentTermsEn = $settings['terms_en'] ?? '';
@@ -163,6 +166,18 @@ render_header('Company Profile', 'admin', true);
                                 <div class="form-text">Percentage applied as a platform fee.</div>
                             </div>
 
+                             <div class="col-md-6">
+                                <label class="form-label fw-bold"><?= e(t('timezone')) ?></label>
+                                <select name="timezone" class="form-select">
+                                    <?php foreach (DateTimeZone::listIdentifiers() as $tz): ?>
+                                        <option value="<?= e($tz) ?>" <?= $tz === $currentTimezone ? 'selected' : '' ?>>
+                                            <?= e($tz) ?>
+                                        </option>
+                                    <?php endforeach; ?>
+                                </select>
+                                <div class="form-text">System Timezone</div>
+                            </div>
+
                             <div class="col-md-12">
                                 <hr class="my-2">
                             </div>

db/migrations/add_settings_table.php

@@ -14,7 +14,8 @@ try {
         ('company_address', '123 Transport St, City, Country'),
         ('platform_charge_percentage', '0'),
         ('logo_path', ''),
-        ('favicon_path', '');
+        ('favicon_path', ''),
+        ('timezone', 'UTC');
     ");
     echo "Settings table created/updated.\n";
 } catch (Exception $e) {

includes/app.php

@@ -254,7 +254,8 @@ $translations = [
   'reset_password_title' => 'Reset Password',
   'reset_password_subtitle' => 'Enter your email to receive a reset link',
   'send_reset_link' => 'Send Reset Link',
-  'back_to_login' => 'Back to Login'
+  'back_to_login' => 'Back to Login',
+  'timezone' => 'Timezone',
 ),
     "ar" => array (
   'app_name' => 'CargoLink',
@@ -497,7 +498,8 @@ $translations = [
   'reset_password_title' => 'إعادة تعيين كلمة المرور',
   'reset_password_subtitle' => 'أدخل بريدك الإلكتروني لتلقي رابط إعادة التعيين',
   'send_reset_link' => 'إرسال رابط إعادة التعيين',
-  'back_to_login' => 'العودة لتسجيل الدخول'
+  'back_to_login' => 'العودة لتسجيل الدخول',
+  'timezone' => 'المنطقة الزمنية',
 )
 ];
 
@@ -712,3 +714,11 @@ function format_currency(float $amount): string
 {
     return number_format($amount, 3) . ' OMR';
 }
+
+// Set timezone from settings
+try {
+    $tz = get_setting('timezone', 'UTC');
+    if ($tz && in_array($tz, DateTimeZone::listIdentifiers())) {
+        date_default_timezone_set($tz);
+    }
+} catch (Throwable $e) {}