ios_app_v2/yobble/Views/Tab/Settings/EditProfileView.swift

import SwiftUI

struct EditProfileView: View {
    // State for form fields
    @State private var displayName = ""
    @State private var description = ""
    
    // State for profile data and avatar
    @State private var profile: ProfileDataPayload?
    @State private var avatarImage: UIImage?
    @State private var showImagePicker = false
    
    // State for loading and errors
    @State private var isLoading = false
    @State private var alertMessage: String?
    @State private var showAlert = false
    
    private let profileService = ProfileService()
    private let descriptionLimit = 1024

    var body: some View {
        ZStack {
            Form {
                Section {
                    HStack {
                        Spacer()
                        VStack {
                            if let image = avatarImage {
                                Image(uiImage: image)
                                    .resizable()
                                    .scaledToFill()
                                    .frame(width: 120, height: 120)
                                    .clipShape(Circle())
                            } else if let profile = profile,
                                      let fileId = profile.avatars?.current?.fileId,
                                      let url = avatarUrl(for: profile, fileId: fileId) {
                                CachedAvatarView(url: url, fileId: fileId, userId: profile.userId.uuidString) {
                                    avatarPlaceholder
                                }
                                .aspectRatio(contentMode: .fill)
                                .frame(width: 120, height: 120)
                                .clipShape(Circle())
                            } else {
                                avatarPlaceholder
                            }
                            
                            Button("Изменить фото") {
                                showImagePicker = true
                            }
                            .padding(.top, 8)
                        }
                        Spacer()
                    }
                }
                .listRowBackground(Color(UIColor.systemGroupedBackground))

                Section(header: Text("Публичная информация")) {
                    TextField("Отображаемое имя", text: $displayName)
                    
                    VStack(alignment: .leading, spacing: 5) {
                        Text("Описание")
                            .font(.caption)
                            .foregroundColor(.secondary)
                        TextEditor(text: $description)
                            .frame(height: 150)
                            .onChange(of: description) { newValue in
                                if newValue.count > descriptionLimit {
                                    description = String(newValue.prefix(descriptionLimit))
                                }
                            }
                        HStack {
                            Spacer()
                            Text("\(description.count) / \(descriptionLimit)")
                                .font(.caption)
                                .foregroundColor(description.count > descriptionLimit ? .red : .secondary)
                        }
                    }
                }

                Button(action: {
                    // Действие для сохранения профиля
                    print("DisplayName: \(displayName)")
                    print("Description: \(description)")
                }) {
                    Text("Применить")
                }
            }
            .navigationTitle("Редактировать профиль")
            .onAppear(perform: loadProfile)
            .sheet(isPresented: $showImagePicker) {
                ImagePicker(image: $avatarImage)
            }
            .alert("Ошибка", isPresented: $showAlert, presenting: alertMessage) { _ in
                Button("OK") {}
            } message: { message in
                Text(message)
            }
            
            if isLoading {
                Color.black.opacity(0.4).ignoresSafeArea()
                ProgressView("Загрузка...")
                    .padding()
                    .background(Color.secondary.colorInvert())
                    .cornerRadius(10)
            }
        }
    }
    
    private var avatarPlaceholder: some View {
        Circle()
            .fill(Color.secondary.opacity(0.2))
            .frame(width: 120, height: 120)
            .overlay(
                Image(systemName: "person.fill")
                    .font(.system(size: 60))
                    .foregroundColor(.gray)
            )
    }
    
    private func avatarUrl(for profile: ProfileDataPayload, fileId: String) -> URL? {
        return URL(string: "\(AppConfig.API_SERVER)/v1/storage/download/avatar/\(profile.userId)?file_id=\(fileId)")
    }
    
    private func loadProfile() {
        isLoading = true
        Task {
            do {
                let profile = try await profileService.fetchMyProfile()
                await MainActor.run {
                    self.profile = profile
                    self.displayName = profile.fullName ?? ""
                    self.description = profile.bio ?? ""
                    self.isLoading = false
                }
            } catch {
                await MainActor.run {
                    self.alertMessage = error.localizedDescription
                    self.showAlert = true
                    self.isLoading = false
                }
            }
        }
    }
}

struct ImagePicker: UIViewControllerRepresentable {
    @Binding var image: UIImage?
    @Environment(\.presentationMode) private var presentationMode

    func makeUIViewController(context: Context) -> UIImagePickerController {
        let picker = UIImagePickerController()
        picker.delegate = context.coordinator
        return picker
    }

    func updateUIViewController(_ uiViewController: UIImagePickerController, context: Context) {}

    func makeCoordinator() -> Coordinator {
        Coordinator(self)
    }

    class Coordinator: NSObject, UINavigationControllerDelegate, UIImagePickerControllerDelegate {
        let parent: ImagePicker

        init(_ parent: ImagePicker) {
            self.parent = parent
        }

        func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey: Any]) {
            if let uiImage = info[.originalImage] as? UIImage {
                parent.image = uiImage
            }
            parent.presentationMode.wrappedValue.dismiss()
        }
    }
}