UI Enhancements in IT Service Request, Announcements, Workforce and notification fixes

lib/models/announcement.dart

@@ -11,6 +11,10 @@ class Announcement {
     this.templateId,
     required this.createdAt,
     required this.updatedAt,
+    required this.bannerEnabled,
+    this.bannerShowAt,
+    this.bannerHideAt,
+    this.pushIntervalMinutes,
   });
 
   final String id;
@@ -23,6 +27,29 @@ class Announcement {
   final DateTime createdAt;
   final DateTime updatedAt;
 
+  /// Whether a persistent banner is shown at the top of the announcements screen.
+  final bool bannerEnabled;
+
+  /// When the banner should start showing. [null] means immediately.
+  final DateTime? bannerShowAt;
+
+  /// When the banner should stop showing. [null] means it requires a manual
+  /// turn-off by the poster or an admin.
+  final DateTime? bannerHideAt;
+
+  /// How often (in minutes) a scheduled push notification is sent while the
+  /// banner is active. [null] means no scheduled push. Max is 1440 (daily).
+  final int? pushIntervalMinutes;
+
+  /// Whether the banner is currently active (visible) based on the current time.
+  bool get isBannerActive {
+    if (!bannerEnabled) return false;
+    final now = AppTime.now();
+    if (bannerShowAt != null && now.isBefore(bannerShowAt!)) return false;
+    if (bannerHideAt != null && now.isAfter(bannerHideAt!)) return false;
+    return true;
+  }
+
   @override
   bool operator ==(Object other) =>
       identical(this, other) ||
@@ -34,6 +61,10 @@ class Announcement {
           body == other.body &&
           isTemplate == other.isTemplate &&
           templateId == other.templateId &&
+          bannerEnabled == other.bannerEnabled &&
+          bannerShowAt == other.bannerShowAt &&
+          bannerHideAt == other.bannerHideAt &&
+          pushIntervalMinutes == other.pushIntervalMinutes &&
           createdAt == other.createdAt &&
           updatedAt == other.updatedAt;
 
@@ -45,15 +76,17 @@ class Announcement {
         body,
         isTemplate,
         templateId,
+        bannerEnabled,
+        bannerShowAt,
+        bannerHideAt,
+        pushIntervalMinutes,
         createdAt,
         updatedAt,
       );
 
   factory Announcement.fromMap(Map<String, dynamic> map) {
     final rolesRaw = map['visible_roles'];
-    final roles = rolesRaw is List
-        ? rolesRaw.cast<String>()
-        : <String>[];
+    final roles = rolesRaw is List ? rolesRaw.cast<String>() : <String>[];
 
     return Announcement(
       id: map['id'] as String,
@@ -65,6 +98,14 @@ class Announcement {
       templateId: map['template_id'] as String?,
       createdAt: AppTime.parse(map['created_at'] as String),
       updatedAt: AppTime.parse(map['updated_at'] as String),
+      bannerEnabled: map['banner_enabled'] as bool? ?? false,
+      bannerShowAt: map['banner_show_at'] != null
+          ? AppTime.parse(map['banner_show_at'] as String)
+          : null,
+      bannerHideAt: map['banner_hide_at'] != null
+          ? AppTime.parse(map['banner_hide_at'] as String)
+          : null,
+      pushIntervalMinutes: map['push_interval_minutes'] as int?,
     );
   }
 }