Private messages: Add pagination

Packages/Conversations/Sources/Conversations/List/ConversationsListView.swift

@@ -51,6 +51,21 @@ public struct ConversationsListView: View {
             }
           }
         }
+        
+        if viewModel.nextPage != nil {
+          HStack {
+            Spacer()
+            ProgressView()
+            Spacer()
+          }
+          .onAppear {
+            if !viewModel.isLoadingNextPage {
+              Task {
+                await viewModel.fetchNextPage()
+              }
+            }
+          }
+        }
       }
       .padding(.top, .layoutPadding)
     }

Packages/Conversations/Sources/Conversations/List/ConversationsListViewModel.swift

@@ -7,8 +7,11 @@ class ConversationsListViewModel: ObservableObject {
   var client: Client?
 
   @Published var isLoadingFirstPage: Bool = true
+  @Published var isLoadingNextPage: Bool = false
   @Published var conversations: [Conversation] = []
   @Published var isError: Bool = false
+  
+  var nextPage: LinkHandler?
 
   public init() {}
 
@@ -18,13 +21,32 @@ class ConversationsListViewModel: ObservableObject {
       isLoadingFirstPage = true
     }
     do {
-      conversations = try await client.get(endpoint: Conversations.conversations)
+      (conversations, nextPage) = try await client.getWithLink(endpoint: Conversations.conversations(maxId: nil))
+      if nextPage?.maxId == nil {
+        nextPage = nil
+      }
       isLoadingFirstPage = false
     } catch {
       isError = true
       isLoadingFirstPage = false
     }
   }
+  
+  func fetchNextPage() async {
+    if let maxId = nextPage?.maxId, let client {
+      do {
+        isLoadingNextPage = true
+        var nextMessages: [Conversation] = []
+        (nextMessages, nextPage) = try await client.getWithLink(endpoint: Conversations.conversations(maxId: maxId))
+        conversations.append(contentsOf: nextMessages)
+        if nextPage?.maxId == nil {
+          nextPage = nil
+        }
+        isLoadingNextPage = false
+      } catch {
+      }
+    }
+  }
 
   func markAsRead(conversation: Conversation) async {
     guard let client else { return }

Packages/Network/Sources/Network/Endpoint/Conversations.swift

@@ -1,7 +1,7 @@
 import Foundation
 
 public enum Conversations: Endpoint {
-  case conversations
+  case conversations(maxId: String?)
   case delete(id: String)
   case read(id: String)
 
@@ -17,6 +17,11 @@ public enum Conversations: Endpoint {
   }
 
   public func queryItems() -> [URLQueryItem]? {
-    return nil
+    switch self {
+    case let .conversations(maxId):
+      return makePaginationParam(sinceId: nil, maxId: maxId, mindId: nil)
+    default:
+      return nil
+    }
   }
 }