//
//  MessageEntryView.swift
//  kordophone2
//
//  Created by James Magahern on 8/24/25.
//

import SwiftUI

struct MessageEntryView: View
{
    @Binding var viewModel: ViewModel
    @Environment(\.selectedConversation) private var selectedConversation
    
    var body: some View {
        VStack(spacing: 0.0) {
            Rectangle()
                .fill(.separator)
                .frame(height: 1.0)
            
            HStack {
                TextField("", text: $viewModel.draftText, axis: .vertical)
                    .focusEffectDisabled(true)
                    .textFieldStyle(.plain)
                    .lineLimit(nil)
                    .scrollContentBackground(.hidden)
                    .fixedSize(horizontal: false, vertical: true)
                    .font(.body)
                    .scrollDisabled(true)
                    .padding(8.0)
                    .background {
                        RoundedRectangle(cornerRadius: 6.0)
                            .fill(.background)
                    }
                
                Button("Send") {
                    viewModel.sendDraft(to: selectedConversation)
                }
                .disabled(viewModel.draftText.isEmpty)
                .keyboardShortcut(.defaultAction)
            }
            .padding(10.0)
        }
    }
    
    // MARK: - Types
    
    @Observable
    class ViewModel
    {
        var draftText: String = ""
        
        func sendDraft(to convo: Display.Conversation?) {
            guard let convo else { return }
            guard !draftText.isEmpty else { return }
            
            let messageText = self.draftText
                .trimmingCharacters(in: .whitespacesAndNewlines)
            
            self.draftText = ""
            
            Task {
                let xpc = XPCClient()
                
                do {
                    try await xpc.sendMessage(conversationId: convo.id, message: messageText)
                } catch {
                    print("Sending error: \(error)")
                }
            }
        }
    }
}

#Preview {
    @Previewable @State var model = MessageEntryView.ViewModel()
    
    VStack {
        Spacer()
        MessageEntryView(viewModel: $model)
    }
}