//
//  LoginController.swift
//  AoleiSports
//
//  Created by ilCode on 2024/6/13.
//

import UIKit
import AuthenticationServices

class LoginController: BaseController {
    private var isCodeLogin = true
    private var countdownTimer: Timer?
    private var remainingSeconds = 60
    
    private lazy var closeButton: UIButton = {
        let button = UIButton()
        button.setImage(UIImage(systemName: "xmark"), for: .normal)
        button.tintColor = .black
        button.addTarget(self, action: #selector(closeTapped), for: .touchUpInside)
        return button
    }()
    
    private lazy var verificationCodeButton: UIButton = {
        let button = UIButton()
        button.setTitle("验证码登录", for: .normal)
        button.isSelected = true
        button.setTitleColor(kMasterColor, for: .selected)
        button.setTitleColor(kMainTitleColor, for: .normal)
        button.titleLabel?.font = kBoldFontSize(17)
        button.addTarget(self, action: #selector(loginMethodChanged), for: .touchUpInside)
        return button
    }()
    
    private lazy var passwordLoginButton: UIButton = {
        let button = UIButton()
        button.setTitle("密码登录", for: .normal)
        button.setTitleColor(kMainTitleColor, for: .normal)
        button.setTitleColor(kMasterColor, for: .selected)
        button.titleLabel?.font = kBoldFontSize(16)
        button.addTarget(self, action: #selector(loginMethodChanged), for: .touchUpInside)
        return button
    }()
    
    private lazy var indicatorView: UIView = {
        let view = UIView()
        view.backgroundColor = .systemRed
        return view
    }()
    
    private lazy var phoneNumberField: UITextField = {
        let textField = UITextField()
        textField.borderStyle = .roundedRect
        textField.keyboardType = .numberPad
        textField.clearButtonMode = .whileEditing
        textField.font = kFontSize(16)
        textField.textColor = kMainTitleColor
        let attributes: [NSAttributedString.Key: Any] = [
            .foregroundColor: kSubTitleColor,
            .font: kFontSize(14)
        ]
        textField.attributedPlaceholder = NSAttributedString(string: "手机号", attributes: attributes)
        return textField
    }()
    
    private lazy var verificationCodeField: UITextField = {
        let textField = UITextField()
        textField.borderStyle = .roundedRect
        textField.keyboardType = .numberPad
        textField.clearButtonMode = .whileEditing
        textField.font = kFontSize(16)
        textField.textColor = kMainTitleColor
        let attributes: [NSAttributedString.Key: Any] = [
            .foregroundColor: kSubTitleColor,
            .font: kFontSize(14)
        ]
        textField.attributedPlaceholder = NSAttributedString(string: "验证码", attributes: attributes)
        return textField
    }()
    
    private lazy var getCodeButton: UIButton = {
        let button = UIButton()
        button.setTitle("获取验证码", for: .normal)
        button.setTitleColor(.systemBlue, for: .normal)
        button.setTitleColor(kSubTitleColor, for: .disabled)
        button.titleLabel?.font = kFontSize(16)
        button.addTarget(self, action: #selector(getCodeTapped), for: .touchUpInside)
        return button
    }()
    
    private lazy var usernameField: UITextField = {
        let textField = UITextField()
        textField.isHidden = true
        textField.borderStyle = .roundedRect
        textField.clearButtonMode = .whileEditing
        textField.font = kFontSize(16)
        textField.textColor = kMainTitleColor
        let attributes: [NSAttributedString.Key: Any] = [
            .foregroundColor: kSubTitleColor,
            .font: kFontSize(14)
        ]
        textField.attributedPlaceholder = NSAttributedString(string: "请输入用户名/手机号", attributes: attributes)
        return textField
    }()
    
    private lazy var passwordField: UITextField = {
        let textField = UITextField()
        textField.isHidden = true
        textField.isSecureTextEntry = true
        textField.borderStyle = .roundedRect
        textField.clearButtonMode = .whileEditing
        textField.font = kFontSize(16)
        textField.textColor = kMainTitleColor
        let attributes: [NSAttributedString.Key: Any] = [
            .foregroundColor: kSubTitleColor,
            .font: kFontSize(14)
        ]
        textField.attributedPlaceholder = NSAttributedString(string: "请输入密码", attributes: attributes)
        return textField
    }()
    
    private lazy var agreementCheckBox: UIButton = {
        let button = UIButton()
        button.setImage(R.image.icon_un_select()?.resize(to: CGSize(width: 12, height: 12)), for: .normal)
        button.setImage(R.image.icon_selected()?.resize(to: CGSize(width: 12, height: 12)), for: .selected)
        button.setTitle("阅读并同意", for: .normal)
        button.titleLabel?.font = kFontSize(12)
        button.setTitleColor(kMainTitleColor, for: .normal)
        button.imageEdgeInsets = UIEdgeInsets(top: 0, left: -5, bottom: 0, right: 0)
        button.addTarget(self, action: #selector(agreementTapped), for: .touchUpInside)
        return button
    }()
    
    private lazy var privacyBtn: UIButton = {
        let button = UIButton()
        button.titleLabel?.font = kFontSize(12)
        button.setTitle("《用户隐私协议》", for: .normal)
        button.setTitleColor(kMasterColor, for: .normal)
        button.addTarget(self, action: #selector(privacyTapped), for: .touchUpInside)
        return button
    }()
    
    private lazy var loginButton: UIButton = {
        let button = UIButton()
        button.setTitle("登录", for: .normal)
        button.titleLabel?.font = kBoldFontSize(16)
        button.backgroundColor = kMasterColor
        button.setTitleColor(kWhite, for: .normal)
        button.corners(radius: 6)
        button.addTarget(self, action: #selector(loginTapped), for: .touchUpInside)
        return button
    }()
    
    private lazy var registerButton: UIButton = {
        let button = UIButton()
        button.setTitle("注册", for: .normal)
        button.titleLabel?.font = kBoldFontSize(16)
        button.backgroundColor = kMasterColor
        button.setTitleColor(.white, for: .normal)
        button.corners(radius: 6)
        button.addTarget(self, action: #selector(registerTapped), for: .touchUpInside)
        return button
    }()
    
    private lazy var thirdPartyLoginLabel: UILabel = {
        let label = UILabel()
        label.text = "其他方式登录"
        label.textColor = kSubTitleColor
        label.font = kFontSize(12)
        label.textAlignment = .center
        return label
    }()
    
    private lazy var appleLoginButton: UIButton = {
        let button = UIButton()
        button.setTitle("苹果登录", for: .normal)
        button.setImage(R.image.apple_icon(), for: .normal)
        button.titleLabel?.font = kFontSize(11)
        button.setTitleColor(kSubTitleColor, for: .normal)
        button.adjustImage(position: .top, spacing: 5)
        button.addTarget(self, action: #selector(appleLoginTapped), for: .touchUpInside)
        return button
    }()
    
    private lazy var guestLoginButton: UIButton = {
        let button = UIButton()
        button.setTitle("游客登录", for: .normal)
        button.setImage(R.image.guest_icon(), for: .normal)
        button.titleLabel?.font = kFontSize(11)
        button.setTitleColor(kSubTitleColor, for: .normal)
        button.adjustImage(position: .top, spacing: 5)
        button.addTarget(self, action: #selector(guestLoginTapped), for: .touchUpInside)
        return button
    }()
    
    private lazy var buttonStackView: UIStackView = {
        let stackView = UIStackView(arrangedSubviews: [appleLoginButton, guestLoginButton])
        stackView.axis = .horizontal
        stackView.alignment = .center
        stackView.distribution = .equalSpacing
        stackView.spacing = 60
        return stackView
    }()
    
    private lazy var appleSignInManager: AppleSignInManager = {
        let manager = AppleSignInManager()
        
        manager.onSignInSuccess = { appleId, token in
            print("登录成功: \(appleId), token: \(token)")
            
            self.view.makeToastActivity(.center)
            UserProvider<LoginOrRegisterTarget>.appleLoginRequest(appleId: appleId, token: token) { logicResult in
                self.view.hideToastActivity()
                
                if case .failure(let failure) = logicResult {
                    self.view.makeToast(failure.localizedDescription, position: .center)
                    return
                }
                self.view.makeToast("登录成功", position: .center)
                self.dismiss(animated: true)
            }
        }
        
        manager.onSignInFailure = { error in
            self.view.makeToast(error.localizedDescription, position: .center)
        }
        return manager
    }()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        setupViews()
    }
    
    private func setupViews() {
        view.backgroundColor = kWhite
        
        gk_navLeftBarButtonItem = UIBarButtonItem(customView: closeButton)
        gk_navLineHidden = true
        gk_navItemLeftSpace = 20
        
        view.addSubview(verificationCodeButton)
        view.addSubview(passwordLoginButton)
        view.addSubview(indicatorView)
        view.addSubview(phoneNumberField)
        view.addSubview(verificationCodeField)
        view.addSubview(getCodeButton)
        view.addSubview(usernameField)
        view.addSubview(passwordField)
        view.addSubview(agreementCheckBox)
        view.addSubview(privacyBtn)
        view.addSubview(loginButton)
        view.addSubview(registerButton)
        view.addSubview(thirdPartyLoginLabel)
        view.addSubview(buttonStackView)
        
        verificationCodeButton.snp.makeConstraints { make in
            make.top.equalToSuperview().offset(kNavBarH + 10)
            make.left.equalToSuperview().offset(20)
        }
        
        passwordLoginButton.snp.makeConstraints { make in
            make.top.equalTo(verificationCodeButton)
            make.leading.equalTo(verificationCodeButton.snp.trailing).offset(20)
        }
        
        indicatorView.snp.makeConstraints { make in
            make.top.equalTo(verificationCodeButton.snp.bottom).offset(-5)
            make.centerX.equalTo(verificationCodeButton)
            make.size.equalTo(CGSize(width: 60, height: 3))
        }
        
        phoneNumberField.snp.makeConstraints { make in
            make.top.equalTo(verificationCodeButton.snp.bottom).offset(20)
            make.left.equalToSuperview().offset(20)
            make.right.equalToSuperview().offset(-20)
            make.height.equalTo(35)
        }
        
        verificationCodeField.snp.makeConstraints { make in
            make.top.equalTo(phoneNumberField.snp.bottom).offset(20)
            make.left.equalToSuperview().offset(20)
            make.width.equalTo(200)
        }
        
        getCodeButton.snp.makeConstraints { make in
            make.centerY.equalTo(verificationCodeField)
            make.left.equalTo(verificationCodeField.snp.right).offset(20)
        }
        
        usernameField.snp.makeConstraints { make in
            make.top.equalTo(passwordLoginButton.snp.bottom).offset(20)
            make.left.equalToSuperview().offset(20)
            make.right.equalToSuperview().offset(-20)
            make.height.equalTo(35)
        }
        
        passwordField.snp.makeConstraints { make in
            make.top.equalTo(usernameField.snp.bottom).offset(20)
            make.left.equalToSuperview().offset(20)
            make.right.equalToSuperview().offset(-20)
            make.height.equalTo(35)
        }
        
        agreementCheckBox.snp.makeConstraints { make in
            make.top.equalTo(verificationCodeField.snp.bottom).offset(20)
            make.left.equalToSuperview().offset(20)
            make.height.equalTo(30)
        }
        
        privacyBtn.snp.makeConstraints { make in
            make.top.equalTo(agreementCheckBox)
            make.left.equalTo(agreementCheckBox.snp.right)
            make.height.equalTo(30)
        }
        
        loginButton.snp.makeConstraints { make in
            make.top.equalTo(agreementCheckBox.snp.bottom).offset(20)
            make.left.equalToSuperview().offset(20)
            make.right.equalToSuperview().offset(-20)
            make.height.equalTo(40)
        }
        
        registerButton.snp.makeConstraints { make in
            make.top.equalTo(loginButton.snp.bottom).offset(15)
            make.left.equalToSuperview().offset(20)
            make.right.equalToSuperview().offset(-20)
            make.height.equalTo(40)
        }
        
        buttonStackView.snp.makeConstraints { make in
            make.centerX.equalToSuperview()
            make.bottom.equalToSuperview().offset(-kBottomSafeH - 50)
        }
        
        thirdPartyLoginLabel.snp.makeConstraints { make in
            make.bottom.equalTo(buttonStackView.snp.top).offset(-20)
            make.centerX.equalToSuperview()
        }
    }
    
    // MARK: - Actions
    @objc private func closeTapped() {
        dismiss(animated: true)
    }
    
    @objc private func loginMethodChanged(_ sender: UIButton) {
        isCodeLogin = sender == verificationCodeButton
        
        if isCodeLogin {
            verificationCodeButton.isSelected = true
            verificationCodeButton.titleLabel?.font = kBoldFontSize(17)
            passwordLoginButton.titleLabel?.font = kBoldFontSize(16)
        } else {
            verificationCodeButton.isSelected = false
            verificationCodeButton.titleLabel?.font = kBoldFontSize(16)
            passwordLoginButton.titleLabel?.font = kBoldFontSize(17)
        }
        passwordLoginButton.isSelected = !verificationCodeButton.isSelected
        
        // 切换输入框
        self.phoneNumberField.isHidden = !isCodeLogin
        self.verificationCodeField.isHidden = !isCodeLogin
        self.getCodeButton.isHidden = !isCodeLogin
        
        self.usernameField.isHidden = isCodeLogin
        self.passwordField.isHidden = isCodeLogin
        
        // 切换指示条位置
        UIView.animate(withDuration: 0.3) {
            self.indicatorView.snp.remakeConstraints { make in
                if self.isCodeLogin {
                    make.top.equalTo(self.verificationCodeButton.snp.bottom).offset(-5)
                    make.size.equalTo(CGSize(width: 60, height: 3))
                    make.centerX.equalTo(self.verificationCodeButton)
                } else {
                    make.top.equalTo(self.verificationCodeButton.snp.bottom).offset(-5)
                    make.size.equalTo(CGSize(width: 60, height: 3))
                    make.centerX.equalTo(self.passwordLoginButton)
                }
            }
            self.view.layoutIfNeeded()
        }
    }
    
    @objc private func getCodeTapped() {
        guard let phoneNumber = phoneNumberField.text?.trimmingCharacters(in: .whitespacesAndNewlines), !phoneNumber.isEmpty else {
            view.makeToast("请输入手机号", position: .center)
            return
        }
        
        view.makeToastActivity(.center)
        
        UserProvider<LoginOrRegisterTarget>.mobileCodeRequest(mobile: phoneNumber) { logicResult in
            self.view.hideToastActivity()
            
            if case .failure(let err) = logicResult {
                self.view.makeToast(err.localizedDescription, position: .center)
                return
            }
            
            self.dealCountDown()
        }
    }
    
    @objc private func dealCountDown() {
        getCodeButton.isEnabled = false
        
        remainingSeconds = 60
        getCodeButton.setTitle("获取验证码(\(remainingSeconds)s)", for: .normal)
        countdownTimer?.invalidate()
        countdownTimer = Timer.scheduledTimer(timeInterval: 1.0, target: self, selector: #selector(updateCountdown), userInfo: nil, repeats: true)
    }
    
    @objc private func updateCountdown() {
        remainingSeconds -= 1
        getCodeButton.setTitle("获取验证码(\(remainingSeconds)s)", for: .normal)
        
        if remainingSeconds <= 0 {
            countdownTimer?.invalidate()
            getCodeButton.setTitle("获取验证码", for: .normal)
            getCodeButton.isEnabled = true
        }
    }
    
    @objc private func agreementTapped() {
        agreementCheckBox.isSelected.toggle()
    }
    
    @objc private func privacyTapped() {
        navigationController?.pushViewController(PrivacyController(), animated: true)
    }
    
    @objc private func loginTapped(_ sender: UIButton) {
        if !agreementCheckBox.isSelected {
            agreementCheckBox.shakeAnimation()
            return
        }
        
        if isCodeLogin {
            guard let phoneNumber = phoneNumberField.text?.trimmingCharacters(in: .whitespacesAndNewlines), !phoneNumber.isEmpty else {
                view.makeToast("请输入手机号", position: .center)
                return
            }
            guard let veriCode = verificationCodeField.text?.trimmingCharacters(in: .whitespacesAndNewlines), !veriCode.isEmpty else {
                view.makeToast("请输入验证码", position: .center)
                return
            }
            
            view.makeToastActivity(.center)
            UserProvider<LoginOrRegisterTarget>.mobileCodeLoginRequest(mobile: phoneNumber, code: veriCode) { logicResult in
                self.view.hideToastActivity()
                
                if case .failure(let failure) = logicResult {
                    self.view.makeToast(failure.localizedDescription, position: .center)
                    return
                }
                self.view.makeToast("登录成功", position: .center)
                self.dismiss(animated: true)
            }
        } else {
            guard let userName = usernameField.text?.trimmingCharacters(in: .whitespacesAndNewlines), !userName.isEmpty else {
                view.makeToast("请输入用户名或手机号", position: .center)
                return
            }
            guard let pwd = passwordField.text?.trimmingCharacters(in: .whitespacesAndNewlines), !pwd.isEmpty else {
                view.makeToast("请输入密码", position: .center)
                return
            }
            
            view.makeToastActivity(.center)
            UserProvider<LoginOrRegisterTarget>.pwdLoginRequest(name: userName, pwd: pwd) { logicResult in
                self.view.hideToastActivity()
                
                if case .failure(let failure) = logicResult {
                    self.view.makeToast(failure.localizedDescription, position: .center)
                    return
                }
                self.view.makeToast("登录成功", position: .center)
                self.dismiss(animated: true)
            }
        }
    }
    
    @objc private func registerTapped() {
        navigationController?.pushViewController(RegisterController(), animated: true)
    }
    
    @objc private func appleLoginTapped() {
        if !agreementCheckBox.isSelected {
            agreementCheckBox.shakeAnimation()
            return
        }
        
        AppleSignInManager().performSignIn()
    }
    
    @objc private func guestLoginTapped() {
        if !agreementCheckBox.isSelected {
            agreementCheckBox.shakeAnimation()
            return
        }
        
        view.makeToastActivity(.center)
        UserProvider<LoginOrRegisterTarget>.guestLoginRequest { logicResult in
            self.view.hideToastActivity()
            
            if case .failure(let failure) = logicResult {
                self.view.makeToast(failure.localizedDescription, position: .center)
                return
            }
            self.view.makeToast("登录成功", position: .center)
            self.dismiss(animated: true)
        }
    }
    
    private func dealReadPrivacy() {
        if !agreementCheckBox.isSelected {
            agreementCheckBox.shakeAnimation()
            return
        }
        view.makeToastActivity(.center)
        DispatchQueue.main.asyncAfter(deadline: .now() + 3) {
            self.view.hideToastActivity()
            self.view.makeToast("加载成功")
        }
    }
}