//
//  KMForgotPasswordView.swift
//  PDF Reader Pro
//
//  Created by wanjun on 2024/10/28.
//

import Cocoa
import Combine

class KMForgotPasswordView: KMBaseXibView {
    
    @IBOutlet weak var resetPasswordsLabel: NSTextField!
    @IBOutlet weak var emailBox: NSBox!
    @IBOutlet weak var emailTextField: NSTextField!
    @IBOutlet weak var nextBox: NSBox!
    @IBOutlet weak var nextButton: NSButton!
    @IBOutlet weak var backButton: NSButton!
    @IBOutlet weak var emailErrorLabel: NSTextField!

    private var viewModel = KMSignUpViewModel()
    private var cancellables = Set<AnyCancellable>()
    
    convenience init(model: KMSignUpViewModel, superView: NSView) {
        self.init(frame: superView.bounds)
        viewModel = model
        viewModel.screenType = .forgotPassword

        bindViewModel()
        languageLocalized()
        initializeUI()
    }
    
    public override init(frame frameRect: NSRect) {
        super.init(frame: frameRect)
    }
    
    public required init?(coder decoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    override func updateUI() {
        super.updateUI()
        
        bindViewModel()
        languageLocalized()
        initializeUI()
    }
    
    // MARK: Private Method
    
    private func languageLocalized() -> Void {
        resetPasswordsLabel.stringValue = NSLocalizedString("Reset Password", tableName: "MemberCenterLocalizable", comment: "")
        emailTextField.placeholderString = NSLocalizedString("Please enter email address", tableName: "MemberCenterLocalizable", comment: "")
        emailErrorLabel.stringValue = String(format: "*%@", NSLocalizedString("Email format error. Please enter the correct email.", tableName: "MemberCenterLocalizable", comment: ""))
        nextButton.title = NSLocalizedString("Next", tableName: "MemberCenterLocalizable", comment: "")
        backButton.title = NSLocalizedString("Previous Step", tableName: "MemberCenterLocalizable", comment: "")
    }
    
    private func initializeUI() -> Void {
        emailTextField.delegate = self

        emailBox.fillColor = NSColor(named: "texefiedfillcolor") ?? NSColor.white
        emailBox.borderColor = NSColor(named: "DADBDE") ?? NSColor.gray

        resetPasswordsLabel.textColor = NSColor(named: "000000")
        resetPasswordsLabel.font = NSFont.SFMediumFontWithSize(20)
        emailTextField.stringValue = viewModel.email
        emailErrorLabel.isHidden = viewModel.emailError()
        emailErrorLabel.textColor = NSColor(named: "FA1E5D")
        emailErrorLabel.font = NSFont.SFProTextRegularFont(9)
        nextBox.fillColor = NSColor(named: "273C62") ?? NSColor.blue
        nextButton.setTitleColor(color: NSColor(named: "FFFFFF") ?? NSColor.white, font: NSFont.SFProTextRegularFont(13))
        backButton.setTitleColor(color: NSColor(named: "4982E6") ?? NSColor.blue, font: NSFont.SFProTextRegularFont(12))
    }
    
    private func textfieldInputState() -> Void {
        if viewModel.emailError() {
            emailBox.borderColor = NSColor(named: "FA1E5D") ?? NSColor.red
        } else {
            emailBox.borderColor = NSColor(named: "DADBDE") ?? NSColor.gray
        }
        emailErrorLabel.isHidden = !viewModel.emailError()
    }
    
    private func skipSignUpView() -> Void {
        guard let parentView = self.superview else { return }
        if parentView is NSBox {
            let model = KMSignUpViewModel()
            model.email = viewModel.email
            let signUpView = KMSignUpView(model: model, superView: parentView)
            NSAnimationContext.runAnimationGroup { context in
                context.duration = 0.3
                self.animator().alphaValue = 0
            } completionHandler: {
                self.removeFromSuperview()
                signUpView.alphaValue = 0
                (parentView as! NSBox).contentView = signUpView
                NSAnimationContext.runAnimationGroup({ context in
                    context.duration = 0.3
                    signUpView.animator().alphaValue = 1
                }, completionHandler: nil)
            }
        } else {
            guard let parentView = self.superview else { return }
            let model = KMSignUpViewModel()
            model.email = viewModel.email
            let signUpView = KMSignUpView(model: model, superView: parentView)
            NSAnimationContext.runAnimationGroup { context in
                context.duration = 0.3
                self.animator().alphaValue = 0
            } completionHandler: {
                self.removeFromSuperview()
                signUpView.alphaValue = 0
                parentView.addSubview(signUpView)
                NSAnimationContext.runAnimationGroup({ context in
                    context.duration = 0.3
                    signUpView.animator().alphaValue = 1
                }, completionHandler: nil)
            }
        }
    }
    
    private func skipEnterVerificationCodeView() -> Void {
        guard let parentView = self.superview else { return }
        if parentView is NSBox {
            let model = KMSignUpViewModel()
            model.email = viewModel.email
            let codeView = KMEnterVerificationCodeView(model: model, superView: parentView)
            NSAnimationContext.runAnimationGroup { context in
                context.duration = 0.3
                self.animator().alphaValue = 0
            } completionHandler: {
                self.removeFromSuperview()
                codeView.alphaValue = 0
                (parentView as! NSBox).contentView = codeView
                NSAnimationContext.runAnimationGroup({ context in
                    context.duration = 0.3
                    codeView.animator().alphaValue = 1
                }, completionHandler: nil)
            }
        } else {
            guard let parentView = self.superview else { return }
            let model = KMSignUpViewModel()
            model.email = viewModel.email
            let codeView = KMEnterVerificationCodeView(model: viewModel, superView: parentView)
            NSAnimationContext.runAnimationGroup { context in
                context.duration = 0.3
                self.animator().alphaValue = 0
            } completionHandler: {
                self.removeFromSuperview()
                codeView.alphaValue = 0
                parentView.addSubview(codeView)
                NSAnimationContext.runAnimationGroup({ context in
                    context.duration = 0.3
                    codeView.animator().alphaValue = 1
                }, completionHandler: nil)
            }
        }
    }
    
    // MARK: Bind Method
    
    func bindViewModel() -> Void {
        viewModel.$emailErrorMessage
            .receive(on: RunLoop.main)
            .sink { [weak self] newValue in
                self?.emailErrorLabel.stringValue = newValue
                self?.emailErrorLabel.isHidden = false
                self?.textfieldInputState()
            }
            .store(in: &cancellables)
    }
    
    // MARK: Action Method
    
    @IBAction func nextButtonAction(_ sender: NSButton) {
        if viewModel.email.count <= 0 || viewModel.email.count > 100 || !viewModel.isValidEmail() {
            viewModel.emailErrorMessage = NSLocalizedString("Email format error. Please enter the correct email.", tableName: "MemberCenterLocalizable", comment: "")
            return
        }
        viewModel.emailErrorMessage = ""
        viewModel.forgotPasswordNextAction() { [weak self] success, msg in
            guard let self = self else { return }
            if success {
                self.skipEnterVerificationCodeView()
            } else {
                let alert = NSAlert()
                alert.messageText = NSLocalizedString("This email has not been registered, please log in through the account verification code, we will automatically register an account for you.", tableName: "MemberCenterLocalizable", comment: "")
                alert.addButton(withTitle: "OK")
                let response = alert.runModal()
                if response == .alertFirstButtonReturn {
                    self.skipSignUpView()
                }
            }
        }
    }
    
    @IBAction func backButtonAction(_ sender: NSButton) {
        skipSignUpView()
    }
}

extension KMForgotPasswordView: NSTextFieldDelegate {
    func controlTextDidEndEditing(_ obj: Notification) {
        let textField = obj.object as? NSTextField
        if textField == emailTextField {
            viewModel.email = textField!.stringValue
        }
    }
    
    func controlTextDidChange(_ obj: Notification) {
        let textField = obj.object as? NSTextField
        if textField == emailTextField {
            viewModel.email = textField!.stringValue
            viewModel.emailErrorMessage = ""
            emailBox.borderColor = NSColor(named: "DADBDE") ?? NSColor.gray
        }
    }
}