feat: adopt new backend api for attachment (#13336)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **New Features**
* Introduced a new query for applying document updates using AI,
allowing merged markdown responses.
* Added support for an optional file upload field when creating chat
messages.

* **Improvements**
* Enhanced recent Copilot sessions query with pagination by adding an
offset parameter.
* Refined attachment handling in chat responses to better distinguish
between single and multiple file uploads, improving reliability.

* **Bug Fixes**
  * Minor update to error handling for clearer messaging.

* **Chores**
* Cleaned up and updated iOS project configuration files for improved
build consistency.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/frontend/apps/ios/App/Packages/AffineGraphQL/Sources/Operations/Queries/ApplyDocUpdatesQuery.graphql.swift

@@ -0,0 +1,54 @@
+// @generated
+// This file was automatically generated and should not be edited.
+
+@_exported import ApolloAPI
+
+public class ApplyDocUpdatesQuery: GraphQLQuery {
+  public static let operationName: String = "applyDocUpdates"
+  public static let operationDocument: ApolloAPI.OperationDocument = .init(
+    definition: .init(
+      #"query applyDocUpdates($workspaceId: String!, $docId: String!, $op: String!, $updates: String!) { applyDocUpdates( workspaceId: $workspaceId docId: $docId op: $op updates: $updates ) }"#
+    ))
+
+  public var workspaceId: String
+  public var docId: String
+  public var op: String
+  public var updates: String
+
+  public init(
+    workspaceId: String,
+    docId: String,
+    op: String,
+    updates: String
+  ) {
+    self.workspaceId = workspaceId
+    self.docId = docId
+    self.op = op
+    self.updates = updates
+  }
+
+  public var __variables: Variables? { [
+    "workspaceId": workspaceId,
+    "docId": docId,
+    "op": op,
+    "updates": updates
+  ] }
+
+  public struct Data: AffineGraphQL.SelectionSet {
+    public let __data: DataDict
+    public init(_dataDict: DataDict) { __data = _dataDict }
+
+    public static var __parentType: any ApolloAPI.ParentType { AffineGraphQL.Objects.Query }
+    public static var __selections: [ApolloAPI.Selection] { [
+      .field("applyDocUpdates", String.self, arguments: [
+        "workspaceId": .variable("workspaceId"),
+        "docId": .variable("docId"),
+        "op": .variable("op"),
+        "updates": .variable("updates")
+      ]),
+    ] }
+
+    /// Apply updates to a doc using LLM and return the merged markdown.
+    public var applyDocUpdates: String { __data["applyDocUpdates"] }
+  }
+}

packages/frontend/apps/ios/App/Packages/AffineGraphQL/Sources/Operations/Queries/GetCopilotRecentSessionsQuery.graphql.swift

@@ -7,24 +7,28 @@ public class GetCopilotRecentSessionsQuery: GraphQLQuery {
   public static let operationName: String = "getCopilotRecentSessions"
   public static let operationDocument: ApolloAPI.OperationDocument = .init(
     definition: .init(
-      #"query getCopilotRecentSessions($workspaceId: String!, $limit: Int = 10) { currentUser { __typename copilot(workspaceId: $workspaceId) { __typename chats( pagination: { first: $limit } options: { fork: false, sessionOrder: desc, withMessages: false } ) { __typename ...PaginatedCopilotChats } } } }"#,
+      #"query getCopilotRecentSessions($workspaceId: String!, $limit: Int = 10, $offset: Int = 0) { currentUser { __typename copilot(workspaceId: $workspaceId) { __typename chats( pagination: { first: $limit, offset: $offset } options: { action: false, fork: false, sessionOrder: desc, withMessages: false } ) { __typename ...PaginatedCopilotChats } } } }"#,
       fragments: [CopilotChatHistory.self, CopilotChatMessage.self, PaginatedCopilotChats.self]
     ))
 
   public var workspaceId: String
   public var limit: GraphQLNullable<Int>
+  public var offset: GraphQLNullable<Int>
 
   public init(
     workspaceId: String,
-    limit: GraphQLNullable<Int> = 10
+    limit: GraphQLNullable<Int> = 10,
+    offset: GraphQLNullable<Int> = 0
   ) {
     self.workspaceId = workspaceId
     self.limit = limit
+    self.offset = offset
   }
 
   public var __variables: Variables? { [
     "workspaceId": workspaceId,
-    "limit": limit
+    "limit": limit,
+    "offset": offset
   ] }
 
   public struct Data: AffineGraphQL.SelectionSet {
@@ -65,8 +69,12 @@ public class GetCopilotRecentSessionsQuery: GraphQLQuery {
         public static var __selections: [ApolloAPI.Selection] { [
           .field("__typename", String.self),
           .field("chats", Chats.self, arguments: [
-            "pagination": ["first": .variable("limit")],
+            "pagination": [
+              "first": .variable("limit"),
+              "offset": .variable("offset")
+            ],
             "options": [
+              "action": false,
               "fork": false,
               "sessionOrder": "desc",
               "withMessages": false

packages/frontend/apps/ios/App/Packages/AffineGraphQL/Sources/Schema/InputObjects/CreateChatMessageInput.graphql.swift

@@ -12,6 +12,7 @@ public struct CreateChatMessageInput: InputObject {
 
   public init(
     attachments: GraphQLNullable<[String]> = nil,
+    blob: GraphQLNullable<Upload> = nil,
     blobs: GraphQLNullable<[Upload]> = nil,
     content: GraphQLNullable<String> = nil,
     params: GraphQLNullable<JSON> = nil,
@@ -19,6 +20,7 @@ public struct CreateChatMessageInput: InputObject {
   ) {
     __data = InputDict([
       "attachments": attachments,
+      "blob": blob,
       "blobs": blobs,
       "content": content,
       "params": params,
@@ -31,6 +33,11 @@ public struct CreateChatMessageInput: InputObject {
     set { __data["attachments"] = newValue }
   }
 
+  public var blob: GraphQLNullable<Upload> {
+    get { __data["blob"] }
+    set { __data["blob"] = newValue }
+  }
+
   public var blobs: GraphQLNullable<[Upload]> {
     get { __data["blobs"] }
     set { __data["blobs"] = newValue }

packages/frontend/apps/ios/App/Packages/Intelligents/Sources/Intelligents/ChatManager/ChatManager+Stream.swift

@@ -167,8 +167,12 @@ private extension ChatManager {
       "files": [String](), // attachment in context, keep nil for now
       "searchMode": editorData.isSearchEnabled ? "MUST" : "AUTO",
     ]
-    let attachmentFieldName = "options.blobs"
-    var uploadableAttachments: [GraphQLFile] = [
+    let hasMultipleAttachmentBlobs = [
+      editorData.fileAttachments.count,
+      editorData.documentAttachments.count,
+    ].reduce(0, +) > 1
+    let attachmentFieldName = hasMultipleAttachmentBlobs ? "options.blobs" : "options.blob"
+    let uploadableAttachments: [GraphQLFile] = [
       editorData.fileAttachments.map { file -> GraphQLFile in
         .init(fieldName: attachmentFieldName, originalName: file.name, data: file.data ?? .init())
       },
@@ -177,15 +181,10 @@ private extension ChatManager {
       },
     ].flatMap(\.self)
     assert(uploadableAttachments.allSatisfy { !($0.data?.isEmpty ?? true) })
-    // in Apollo, filed name is handled as attached object to field when there is only one attachment
-    // to use array on our server, we need to append a dummy attachment
-    // which is ignored if data is empty and name is empty
-    if uploadableAttachments.count == 1 {
-      uploadableAttachments.append(.init(fieldName: attachmentFieldName, originalName: "", data: .init()))
-    }
     guard let input = try? CreateChatMessageInput(
       attachments: [],
-      blobs: .some([]), // must have the placeholder
+      blob: hasMultipleAttachmentBlobs ? .none : "",
+      blobs: hasMultipleAttachmentBlobs ? .some([]) : .none,
       content: .some(contextSnippet.isEmpty ? editorData.text : "\(contextSnippet)\n\(editorData.text)"),
       params: .some(AffineGraphQL.JSON(_jsonValue: messageParameters)),
       sessionId: sessionId

packages/frontend/apps/ios/App/Packages/Intelligents/Sources/Intelligents/IntelligentContext/IntelligentContext.swift

@@ -62,7 +62,7 @@ public class IntelligentContext {
         "Login required: \(reason)"
       case let .sessionCreationFailed(reason):
         "Session creation failed: \(reason)"
-      case let .featureClosed:
+      case .featureClosed:
         "Intelligent feature closed"
       }
     }