Add Message Reminders

CHANGELOG.md

@@ -3,7 +3,14 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 # Upcoming
 
-### 🔄 Changed
+## StreamChat
+### ✅ Added
+- Add new `Filter.isNil` to make it easier to query by nil values [#3623](https://github.com/GetStream/stream-chat-swift/pull/3623)
+- Add Message Reminders [#3623](https://github.com/GetStream/stream-chat-swift/pull/3623)
+   - Add `ChatMessageController.createReminder()`
+   - Add `ChatMessageController.updateReminder()` 
+   - Add `ChatMessageController.deleteReminder()`
+   - Add `MessageReminderListController` and `MessageReminderListQuery`
 
 # [4.76.0](https://github.com/GetStream/stream-chat-swift/releases/tag/4.76.0)
 _March 31, 2025_

DemoApp/Screens/AppConfigViewController/AppConfigViewController.swift

@@ -22,6 +22,8 @@ struct DemoAppConfig {
     var shouldShowConnectionBanner: Bool
     /// A Boolean value to define if the premium member feature is enabled. This is to test custom member data.
     var isPremiumMemberFeatureEnabled: Bool
+    /// A Boolean value to define if the reminders feature is enabled.
+    var isRemindersEnabled: Bool
 
     /// The details to generate expirable tokens in the demo app.
     struct TokenRefreshDetails {
@@ -50,7 +52,8 @@ class AppConfig {
             isLocationAttachmentsEnabled: false,
             tokenRefreshDetails: nil,
             shouldShowConnectionBanner: false,
-            isPremiumMemberFeatureEnabled: false
+            isPremiumMemberFeatureEnabled: false,
+            isRemindersEnabled: true
         )
 
         if StreamRuntimeCheck.isStreamInternalConfiguration {
@@ -61,6 +64,7 @@ class AppConfig {
             demoAppConfig.isHardDeleteEnabled = true
             demoAppConfig.shouldShowConnectionBanner = true
             demoAppConfig.isPremiumMemberFeatureEnabled = true
+            demoAppConfig.isRemindersEnabled = true
             StreamRuntimeCheck.assertionsEnabled = true
         }
     }
@@ -173,6 +177,7 @@ class AppConfigViewController: UITableViewController {
         case tokenRefreshDetails
         case shouldShowConnectionBanner
         case isPremiumMemberFeatureEnabled
+        case isRemindersEnabled
     }
 
     enum ComponentsConfigOption: String, CaseIterable {
@@ -338,6 +343,10 @@ class AppConfigViewController: UITableViewController {
             cell.accessoryView = makeSwitchButton(demoAppConfig.isPremiumMemberFeatureEnabled) { [weak self] newValue in
                 self?.demoAppConfig.isPremiumMemberFeatureEnabled = newValue
             }
+        case .isRemindersEnabled:
+            cell.accessoryView = makeSwitchButton(demoAppConfig.isRemindersEnabled) { [weak self] newValue in
+                self?.demoAppConfig.isRemindersEnabled = newValue
+            }
         }
     }
 
@@ -735,6 +744,9 @@ class AppConfigViewController: UITableViewController {
             guard let selectedOption = options.first else { return }
             apiKeyString = selectedOption.rawValue
             StreamChatWrapper.replaceSharedInstance(apiKeyString: apiKeyString)
+            if let baseURL = selectedOption.customBaseURL {
+                self?.chatClientConfig.baseURL = .init(url: baseURL)
+            }
             self?.tableView.reloadData()
         }
 

DemoApp/Screens/DemoAppTabBarController.swift

@@ -6,22 +6,31 @@ import StreamChat
 import StreamChatUI
 import UIKit
 
-class DemoAppTabBarController: UITabBarController, CurrentChatUserControllerDelegate {
+class DemoAppTabBarController: UITabBarController, CurrentChatUserControllerDelegate, MessageReminderListControllerDelegate {
     let channelListVC: UIViewController
     let threadListVC: UIViewController
     let draftListVC: UIViewController
+    let reminderListVC: UIViewController
     let currentUserController: CurrentChatUserController
+    let allRemindersListController: MessageReminderListController
+
+    // Events controller for listening to chat events
+    private var eventsController: EventsController!
 
     init(
         channelListVC: UIViewController,
         threadListVC: UIViewController,
         draftListVC: UIViewController,
-        currentUserController: CurrentChatUserController
+        reminderListVC: UIViewController,
+        currentUserController: CurrentChatUserController,
+        allRemindersListController: MessageReminderListController
     ) {
         self.channelListVC = channelListVC
         self.threadListVC = threadListVC
         self.draftListVC = draftListVC
+        self.reminderListVC = reminderListVC
         self.currentUserController = currentUserController
+        self.allRemindersListController = allRemindersListController
         super.init(nibName: nil, bundle: nil)
     }
 
@@ -52,6 +61,12 @@ class DemoAppTabBarController: UITabBarController, CurrentChatUserControllerDele
         currentUserController.delegate = self
         unreadCount = currentUserController.unreadCount
 
+        // Update reminders badge if the feature is enabled.
+        if AppConfig.shared.demoAppConfig.isRemindersEnabled {
+            allRemindersListController.delegate = self
+            updateRemindersBadge()
+        }
+
         tabBar.backgroundColor = Appearance.default.colorPalette.background
         tabBar.isTranslucent = true
 
@@ -65,14 +80,34 @@ class DemoAppTabBarController: UITabBarController, CurrentChatUserControllerDele
 
         draftListVC.tabBarItem.title = "Drafts"
         draftListVC.tabBarItem.image = UIImage(systemName: "bubble.and.pencil")
+
+        reminderListVC.tabBarItem.title = "Reminders"
+        reminderListVC.tabBarItem.image = UIImage(systemName: "bell")
 
-        viewControllers = [channelListVC, threadListVC, draftListVC]
+        // Only show reminders tab if the feature is enabled
+        if AppConfig.shared.demoAppConfig.isRemindersEnabled {
+            viewControllers = [channelListVC, threadListVC, draftListVC, reminderListVC]
+        } else {
+            viewControllers = [channelListVC, threadListVC, draftListVC]
+        }
     }
-
+    
     func currentUserController(_ controller: CurrentChatUserController, didChangeCurrentUserUnreadCount: UnreadCount) {
         let unreadCount = didChangeCurrentUserUnreadCount
         self.unreadCount = unreadCount
         let totalUnreadBadge = unreadCount.channels + unreadCount.threads
         UIApplication.shared.applicationIconBadgeNumber = totalUnreadBadge
     }
+
+    func controller(
+        _ controller: MessageReminderListController,
+        didChangeReminders changes: [ListChange<MessageReminder>]
+    ) {
+        updateRemindersBadge()
+    }
+
+    private func updateRemindersBadge() {
+        let reminders = allRemindersListController.reminders
+        reminderListVC.tabBarItem.badgeValue = reminders.isEmpty ? nil : "\(reminders.count)"
+    }
 }