import SwiftUI



struct ChangePasswordView: View {
    @State private var oldPassword = ""
    @State private var newPassword = ""
    @State private var confirmPassword = ""
    @State private var isOldPasswordVisible = false
    @State private var isNewPasswordVisible = false
    @State private var isConfirmPasswordVisible = false

    private var isOldPasswordValid: Bool {
        return oldPassword.count >= 8 && oldPassword.count <= 128
    }

    private var isOldPasswordSame: Bool {
        return oldPassword == newPassword
    }
    
    private var isNewPasswordValid: Bool {
        return newPassword.count >= 8 && newPassword.count <= 128
    }
    
    private var isPasswordConfirmValid: Bool {
        return newPassword == confirmPassword
    }
    
    var body: some View {
        Form {
            Section {

                HStack {
                    if isOldPasswordVisible {
                        TextField(NSLocalizedString("Старый пароль", comment: "Старый пароль"), text: $oldPassword)
                            .autocapitalization(.none)
                            .disableAutocorrection(true)
                            .textContentType(.password)
                            .frame(maxWidth: .infinity, alignment: .leading)
                    } else {
                        SecureField(NSLocalizedString("Старый пароль", comment: "Старый пароль"), text: $oldPassword)
                            .autocapitalization(.none)
                            .disableAutocorrection(true)
                            .textContentType(.password)
                            .frame(maxWidth: .infinity, alignment: .leading)
                    }
                    
                    Button(action: {
                        isOldPasswordVisible.toggle()
                    }) {
                        Image(systemName: isOldPasswordVisible ? "eye.slash" : "eye")
                            .foregroundColor(.gray)
                    }
                    .buttonStyle(PlainButtonStyle())
                    .padding(.horizontal, 4)
                    
                    if !oldPassword.isEmpty {
                        Image(systemName: isOldPasswordValid ? "checkmark.circle" : "xmark.circle")
                            .foregroundColor(isOldPasswordValid ? .green : .red)
                    }
                }

                HStack {
                    if isNewPasswordVisible {
                        TextField(NSLocalizedString("Новый пароль", comment: "Новый пароль"), text: $newPassword)
                            .autocapitalization(.none)
                            .disableAutocorrection(true)
                            .textContentType(.newPassword)
                            .frame(maxWidth: .infinity, alignment: .leading)
                    } else {
                        SecureField(NSLocalizedString("Новый пароль", comment: "Новый пароль"), text: $newPassword)
                            .autocapitalization(.none)
                            .disableAutocorrection(true)
                            .textContentType(.newPassword)
                            .frame(maxWidth: .infinity, alignment: .leading)
                    }
                    
                    Button(action: {
                        isNewPasswordVisible.toggle()
                    }) {
                        Image(systemName: isNewPasswordVisible ? "eye.slash" : "eye")
                            .foregroundColor(.gray)
                    }
                    .buttonStyle(PlainButtonStyle())
                    .padding(.horizontal, 4)

                    if !newPassword.isEmpty {
                        let isAllValid = isNewPasswordValid && !isOldPasswordSame
                        
                        Image(systemName: isAllValid ? "checkmark.circle" : "xmark.circle")
                            .foregroundColor(isAllValid ? .green : .red)
                    }
                }
                
                HStack {
                    if isConfirmPasswordVisible {
                        TextField(NSLocalizedString("Подтверждение пароля", comment: "Подтверждение пароля"), text: $confirmPassword)
                            .autocapitalization(.none)
                            .disableAutocorrection(true)
                            .textContentType(.password)
                            .frame(maxWidth: .infinity, alignment: .leading)
                    } else {
                        SecureField(NSLocalizedString("Подтверждение пароля", comment: "Подтверждение пароля"), text: $confirmPassword)
                            .autocapitalization(.none)
                            .disableAutocorrection(true)
                            .textContentType(.password)
                            .frame(maxWidth: .infinity, alignment: .leading)
                    }
                    
                    Button(action: {
                        isConfirmPasswordVisible.toggle()
                    }) {
                        Image(systemName: isConfirmPasswordVisible ? "eye.slash" : "eye")
                            .foregroundColor(.gray)
                    }
                    .buttonStyle(PlainButtonStyle())
                    .padding(.horizontal, 4)

                    if !confirmPassword.isEmpty {
                        Image(systemName: isPasswordConfirmValid ? "checkmark.circle" : "xmark.circle")
                            .foregroundColor(isPasswordConfirmValid ? .green : .red)
                    }
                }
                
                
                
            }

            var isButtonEnabled: Bool {
                isPasswordConfirmValid && !isOldPasswordSame && isNewPasswordValid && isOldPasswordValid
            }
            
            Button(action: {
                // Действие для сохранения профиля
                print("oldPassword: \(oldPassword)")
                print("newPassword: \(newPassword)")
                print("confirmPassword: \(confirmPassword)")
            }) {
                Text(NSLocalizedString("Применить", comment: ""))
                    .foregroundColor(.white)
                    .padding()
                    .frame(maxWidth: .infinity)
                    .background(isButtonEnabled ? Color.blue : Color.gray)
                    .cornerRadius(8)
            }
            .disabled(!isButtonEnabled)
            .buttonStyle(PlainButtonStyle())
            .listRowInsets(EdgeInsets())
            .listRowBackground(Color.clear)
        }
        .navigationTitle(NSLocalizedString("Изменение пароля", comment: ""))
    }
}