Implemented channel config for commands

Author: martinmitrevski

Sources/StreamChatSwiftUI/ChatChannel/Composer/AttachmentPickerTypeView.swift

@@ -45,11 +45,13 @@ public struct AttachmentPickerTypeView: View {
                     )
                 }
 
-                PickerTypeButton(
-                    pickerTypeState: $pickerTypeState,
-                    pickerType: .instantCommands,
-                    selected: attachmentPickerType
-                )
+                if channelConfig?.commands.count ?? 0 > 0 {
+                    PickerTypeButton(
+                        pickerTypeState: $pickerTypeState,
+                        pickerType: .instantCommands,
+                        selected: attachmentPickerType
+                    )
+                }
             case .collapsed:
                 Button {
                     withAnimation {

Sources/StreamChatSwiftUI/ChatChannel/Composer/MessageComposerView.swift

@@ -140,7 +140,7 @@ public struct MessageComposerView<Factory: ViewFactory>: View, KeyboardReadable
             }
         }
         .overlay(
-            viewModel.composerCommand != nil ?
+            viewModel.showCommandsOverlay ?
                 factory.makeCommandsContainerView(
                     suggestions: viewModel.suggestions,
                     handleCommand: { commandInfo in

Sources/StreamChatSwiftUI/ChatChannel/Composer/MessageComposerViewModel.swift

@@ -239,6 +239,10 @@ open class MessageComposerViewModel: ObservableObject {
         channelController.channel?.isDirectMessageChannel ?? false
     }
 
+    public var showCommandsOverlay: Bool {
+        composerCommand != nil && channelController.channel?.config.commands.count ?? 0 > 0
+    }
+    
     public func change(pickerState: AttachmentPickerState) {
         if pickerState != self.pickerState {
             self.pickerState = pickerState

Sources/StreamChatSwiftUI/ChatChannel/Composer/Suggestions/CommandsConfig.swift

@@ -41,10 +41,18 @@ public class DefaultCommandsConfig: CommandsConfig {
 
         var instantCommands = [CommandHandler]()
 
-        let giphyCommand = GiphyCommandHandler(commandSymbol: "/giphy")
-        instantCommands.append(giphyCommand)
+        let channelConfig = channelController.channel?.config
 
-        if channelController.channel?.config.mutesEnabled == true {
+        let giphyEnabled = channelConfig?.commands.first(where: { command in
+            command.name == "giphy"
+        }) != nil
+        
+        if giphyEnabled {
+            let giphyCommand = GiphyCommandHandler(commandSymbol: "/giphy")
+            instantCommands.append(giphyCommand)
+        }
+        
+        if channelConfig?.mutesEnabled == true {
             let muteCommand = MuteCommandHandler(
                 channelController: channelController,
                 commandSymbol: "/mute"