ios: adds file uploading

ios/Packages/Sybil/Sources/Sybil/SybilViewModel.swift

@@ -91,6 +91,7 @@ final class SybilViewModel {
     var errorMessage: String?
 
     var composer = ""
+    var composerAttachments: [ChatAttachment] = []
     var provider: Provider
     var modelCatalog: [Provider: ProviderModelInfo] = [:]
     var model: String
@@ -202,6 +203,19 @@ final class SybilViewModel {
         return draftKind != nil || selectedItem != nil
     }
 
+    var canSendComposer: Bool {
+        if isSending {
+            return false
+        }
+
+        let content = composer.trimmingCharacters(in: .whitespacesAndNewlines)
+        if isSearchMode {
+            return !content.isEmpty
+        }
+
+        return !content.isEmpty || !composerAttachments.isEmpty
+    }
+
     var displayedMessages: [Message] {
         let canonical = displayableMessages(selectedChat?.messages ?? [])
         guard let pending = pendingChatState else {
@@ -282,6 +296,7 @@ final class SybilViewModel {
         authError = nil
         errorMessage = nil
         pendingChatState = nil
+        composerAttachments = []
         settings.persist()
 
         SybilLog.info(
@@ -358,6 +373,7 @@ final class SybilViewModel {
         selectedSearch = nil
         errorMessage = nil
         composer = ""
+        composerAttachments = []
     }
 
     func startNewSearch() {
@@ -368,6 +384,7 @@ final class SybilViewModel {
         selectedSearch = nil
         errorMessage = nil
         composer = ""
+        composerAttachments = []
     }
 
     func openSettings() {
@@ -377,6 +394,7 @@ final class SybilViewModel {
         selectedChat = nil
         selectedSearch = nil
         errorMessage = nil
+        composerAttachments = []
     }
 
     func select(_ selection: SidebarSelection) {
@@ -384,6 +402,9 @@ final class SybilViewModel {
         draftKind = nil
         selectedItem = selection
         errorMessage = nil
+        if case .search = selection {
+            composerAttachments = []
+        }
 
         if case .settings = selection {
             selectedChat = nil
@@ -430,11 +451,20 @@ final class SybilViewModel {
 
     func sendComposer() async {
         let content = composer.trimmingCharacters(in: .whitespacesAndNewlines)
-        guard !content.isEmpty, !isSending else {
+        let attachments = composerAttachments
+
+        guard !isSending else {
+            return
+        }
+
+        if isSearchMode {
+            guard !content.isEmpty else { return }
+        } else if content.isEmpty && attachments.isEmpty {
             return
         }
 
         composer = ""
+        composerAttachments = []
         errorMessage = nil
         isSending = true
 
@@ -444,7 +474,7 @@ final class SybilViewModel {
                 try await sendSearch(query: content)
             } else {
                 SybilLog.info(SybilLog.ui, "Sending chat prompt")
-                try await sendChat(content: content)
+                try await sendChat(content: content, attachments: attachments)
             }
         } catch {
             errorMessage = normalizeAPIError(error)
@@ -468,12 +498,38 @@ final class SybilViewModel {
                 }
             }
 
-            pendingChatState = nil
+            if !isSearchMode {
+                composer = content
+                composerAttachments = attachments
+                pendingChatState = nil
+            }
         }
 
         isSending = false
     }
 
+    func appendComposerAttachments(_ attachments: [ChatAttachment]) throws {
+        guard !attachments.isEmpty else {
+            return
+        }
+
+        guard !isSearchMode else {
+            errorMessage = "Attachments are only available in chat mode."
+            return
+        }
+
+        if composerAttachments.count + attachments.count > SybilChatAttachmentSupport.maxAttachmentsPerMessage {
+            throw ChatAttachmentError.tooManyAttachments(SybilChatAttachmentSupport.maxAttachmentsPerMessage)
+        }
+
+        composerAttachments += attachments
+        errorMessage = nil
+    }
+
+    func removeComposerAttachment(id: String) {
+        composerAttachments.removeAll { $0.id == id }
+    }
+
     func startChatFromSelectedSearch() async {
         guard let search = selectedSearch, !isCreatingSearchChat, !isSending else {
             return
@@ -488,6 +544,7 @@ final class SybilViewModel {
             draftKind = nil
             pendingChatState = nil
             composer = ""
+            composerAttachments = []
 
             chats.removeAll(where: { $0.id == chat.id })
             chats.insert(chat, at: 0)
@@ -668,13 +725,14 @@ final class SybilViewModel {
         selectedSearch = nil
     }
 
-    private func sendChat(content: String) async throws {
+    private func sendChat(content: String, attachments: [ChatAttachment]) async throws {
         let optimisticUser = Message(
             id: "temp-user-\(UUID().uuidString)",
             createdAt: Date(),
             role: .user,
             content: content,
-            name: nil
+            name: nil,
+            metadata: SybilChatAttachmentSupport.metadataValue(for: attachments)
         )
 
         let optimisticAssistant = Message(
@@ -740,8 +798,8 @@ final class SybilViewModel {
             baseChat.messages
             .filter { !$0.isToolCallLog }
             .map {
-                CompletionRequestMessage(role: $0.role, content: $0.content, name: $0.name)
-            } + [CompletionRequestMessage(role: .user, content: content)]
+                CompletionRequestMessage(role: $0.role, content: $0.content, name: $0.name, attachments: $0.attachments.isEmpty ? nil : $0.attachments)
+            } + [CompletionRequestMessage(role: .user, content: content, attachments: attachments.isEmpty ? nil : attachments)]
 
         let streamStatus = CompletionStreamStatus()
 
@@ -749,7 +807,8 @@ final class SybilViewModel {
             Task { [weak self] in
                 guard let self else { return }
                 do {
-                    let updated = try await client.suggestChatTitle(chatID: chatID, content: content)
+                    let titleSeed = !content.isEmpty ? content : SybilChatAttachmentSupport.attachmentSummary(attachments)
+                    let updated = try await client.suggestChatTitle(chatID: chatID, content: titleSeed.isEmpty ? "Uploaded files" : titleSeed)
                     await MainActor.run {
                         self.chats = self.chats.map { existing in
                             if existing.id == updated.id {
@@ -1019,6 +1078,13 @@ final class SybilViewModel {
             return String(firstUserMessage.prefix(48))
         }
 
+        if let firstUserMessage = messages?.first(where: { $0.role == .user }) {
+            let attachmentSummary = SybilChatAttachmentSupport.attachmentSummary(firstUserMessage.attachments)
+            if !attachmentSummary.isEmpty {
+                return String(attachmentSummary.prefix(48))
+            }
+        }
+
         return "New chat"
     }