//
//  LoginVC.swift
//  Sirani
//
//  Created by Anhar Solehudin on 24/03/19.
//  Copyright © 2019 Anhar Solehudin. All rights reserved.
//

import UIKit

class LoginVC: UIViewController {

    // Outlets
    @IBOutlet weak var loginLayout: UIScrollView!
    @IBOutlet weak var profileLayout: UIScrollView!
    
    @IBOutlet weak var inputUsername: RoundTextField!
    @IBOutlet weak var inputPassword: RoundTextField!
    @IBOutlet weak var txtUsernameError: UILabel!
    @IBOutlet weak var txtPasswordError: UILabel!
    @IBOutlet weak var progress: UIView!
    @IBOutlet weak var btnTogglePassword: UIButton!
    
    @IBOutlet weak var fullname: UILabel!
    @IBOutlet weak var btnOptionsRoles: UIButton!
    @IBOutlet weak var optionsRolesLayout: UIView!
    @IBOutlet weak var optionsTV: UITableView!
    @IBOutlet weak var imgDropdownOptionsRoles: UIImageView!
    
    
    // Initialize
    private var presenter: LoginPresenter!
    
    // Constant
    private let alertNoConnectionTitle = "Informasi"
    private let alertNoConnectionMsg = "Sepertinya Anda sedang tidak tersambung pada koneksi internet"
    private let alertNoConnectionActionYes = "OK"
    private let alertLoginFailedTitle = "Informasi"
    private let alertLoginFailedActionYes = "OK"
    private let urlResetPassword = "https://sertifikasi.postel.go.id/registrasi/forget"
//    private let urlRegister = "https://sertifikasi.postel.go.id/registrasi/daftar"
    private let urlRegister = "https://sertifikasi.postel.go.id/registrasi/daftar"
    private let urlRegisterOpen = "https://sertifikasi.postel.go.id/registrasi/forget"
    private let availableRoles = ["C","1","7","8","11"]
    private let CUSTOMER_ROLE_ID = "C"
    private let OPERATOR_ROLE_ID = "1"
    private let KEPALA_SEKSI_ROLE_ID = "7"
    private let KEPALA_SUB_DIREKTORAT_ROLE_ID = "11"
    private let DIREKTUR_ROLE_ID = "8"
    private let CUSTOMER_ROLE = "Customer"
    private let OPERATOR_ROLE = "Operator"
    private let KEPALA_SEKSI_ROLE = "Sub Koordinator"
    private let KEPALA_SUB_DIREKTORAT_ROLE = "Koordinator"
    private let DIREKTUR_ROLE = "Direktur"
    
    // Variables
    private var loading = false
    private var optionsRoles = [OptionItem]()
    
    // View Lifecycles
    override var preferredStatusBarStyle: UIStatusBarStyle {
        return .lightContent
    }
    
    override func viewWillAppear(_ animated: Bool) {
        presenter.attachView(view: self)
        checkUserState()
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()

        presenter = LoginPresenter(siraniApiServices: SiraniApiServices())
    }
    
    override func viewDidDisappear(_ animated: Bool) {
        presenter.detachView()
    }
    
    // private functions
    private func checkUserState() {
        let isLoggedIn = UserState.instance.isLoggedIn()
        if isLoggedIn {
            showProfileLayout()
        } else {
            showLoginLayout()
        }
    }
    
    private func showLoginLayout() {
        
        inputUsername.text = ""
        inputPassword.text = ""
        loginLayout.show()
        profileLayout.hide()
    }
    
    private func showProfileLayout() {
        let name = UserState.instance.getFullname()
        fullname.text = name
        optionsRoles.removeAll()
        
        let userRoles = UserState.instance.getRoles()
        if !userRoles.isEmpty {
            let roles = userRoles.components(separatedBy: ";")
            for role in roles {
                if availableRoles.contains(role) {
                    if role == CUSTOMER_ROLE_ID {
                        let optionItem = OptionItem(label: CUSTOMER_ROLE, value: CUSTOMER_ROLE_ID)
                        optionsRoles.append(optionItem)
                        
                    } else if role == OPERATOR_ROLE_ID {
                        let optionItem = OptionItem(label: OPERATOR_ROLE, value: OPERATOR_ROLE_ID)
                        optionsRoles.append(optionItem)
                        
                    } else if role == KEPALA_SEKSI_ROLE_ID {
                        let optionItem = OptionItem(label: KEPALA_SEKSI_ROLE, value: KEPALA_SEKSI_ROLE_ID)
                        optionsRoles.append(optionItem)
                        
                    } else if role == KEPALA_SUB_DIREKTORAT_ROLE_ID {
                        let optionItem = OptionItem(label: KEPALA_SUB_DIREKTORAT_ROLE, value: KEPALA_SUB_DIREKTORAT_ROLE_ID)
                        optionsRoles.append(optionItem)
                        
                    } else if role == DIREKTUR_ROLE_ID {
                        let optionItem = OptionItem(label: DIREKTUR_ROLE, value: DIREKTUR_ROLE_ID)
                        optionsRoles.append(optionItem)
                        
                    }
                }
            }
            
            btnOptionsRoles.layer.masksToBounds = false
            btnOptionsRoles.layer.shadowColor = #colorLiteral(red: 0.6000000238, green: 0.6000000238, blue: 0.6000000238, alpha: 1)
            btnOptionsRoles.layer.shadowOpacity = 0.5
            btnOptionsRoles.layer.shadowOffset = CGSize(width: 1, height: 1)
            btnOptionsRoles.layer.shadowRadius = 1
            var selectedRole = "Pilih Role"
            let userRoleId = UserState.instance.getRoleId()
            if availableRoles.contains(userRoleId) {
                if userRoleId == CUSTOMER_ROLE_ID {
                    selectedRole =  CUSTOMER_ROLE
                } else if userRoleId == OPERATOR_ROLE_ID {
                    selectedRole =  OPERATOR_ROLE
                } else if userRoleId == KEPALA_SEKSI_ROLE_ID {
                    selectedRole =  KEPALA_SEKSI_ROLE
                } else if userRoleId == KEPALA_SUB_DIREKTORAT_ROLE_ID {
                    selectedRole =  KEPALA_SUB_DIREKTORAT_ROLE
                } else if userRoleId == DIREKTUR_ROLE_ID {
                    selectedRole =  DIREKTUR_ROLE
                }
            }
            btnOptionsRoles.setTitle(selectedRole, for: .normal)
            
            optionsTV.delegate = self
            optionsTV.dataSource = self
            optionsTV.tableFooterView = UIView()
            optionsTV.reloadData()

            if roles.count > 1 {
                btnOptionsRoles.show()
                imgDropdownOptionsRoles.show()
            } else {
                btnOptionsRoles.hide()
                imgDropdownOptionsRoles.hide()
            }
            
        } else {
            btnOptionsRoles.hide()
            imgDropdownOptionsRoles.hide()
        }
        
        profileLayout.show()
        loginLayout.hide()
    }
    
    private func inputValid(username: String, password: String) -> Bool {
        var valid = true
        
        if username.isEmpty {
            txtUsernameError.show()
            valid = false
        } else {
            txtUsernameError.hide()
        }
        
        if password.isEmpty {
            txtPasswordError.show()
            valid = false
        } else {
            txtPasswordError.hide()
        }
        
        return valid
    }
    
    private func login(username: String, password: String) {
        if !loading {
            if ConnectionHelper.isConnectedToNetwork() {
                presenter.login(username: username, password: password)
            } else {
                showNoConnection()
            }
        }
    }
    
    // Actions
    @IBAction func onBtnTogglePasswordTap(_ sender: Any) {
        let passHidden = inputPassword.isSecureTextEntry
        if passHidden {
            inputPassword.isSecureTextEntry = false
            btnTogglePassword.setImage(UIImage(named: "hide-password"), for: .normal)
        } else {
            inputPassword.isSecureTextEntry = true
            btnTogglePassword.setImage(UIImage(named: "show-password"), for: .normal)
        }
    }
    
    @IBAction func onBtnLoginTapped(_ sender: Any) {
        if !loading {
            let username = inputUsername.getText() ?? ""
            let password = inputPassword.getText() ?? ""
            
            if inputValid(username: username, password: password) {
                login(username: username, password: password)
            }
        }
    }
    
//    @IBAction func onBtnForgotPasswordTapped(_ sender: Any) {
//        if !loading {
//            //openWebPage(urlPage: urlResetPassword)
//
//            if let url = URL(string: urlResetPassword) {
//                UIApplication.shared.open(url)
//            }
//
//        }
//    }
//
//    @IBAction func onBtnRegisterTapped(_ sender: Any) {
//        if !loading {
//            //openWebPage(urlPage: urlRegister)
//
//            if let url = URL(string: urlRegister) {
//                UIApplication.shared.open(url)
//            }
//
//        }
//    }
    
    @IBAction func onBtnOptionsRolesTap(_ sender: Any) {
        optionsRolesLayout.show()
    }
    
    @IBAction func onBtnLogoutTap(_ sender: Any) {
        showLoading()
        
        let isLoggedOut = UserState.instance.userDataCleared()
        DispatchQueue.main.asyncAfter(deadline: .now() + 1.0) {
            self.hideLoading()
            if isLoggedOut {
                self.showLoginLayout()
            }
        }
    }
    
    @IBAction func onInputUsernameKeyTap(_ sender: Any) {
        inputPassword.becomeFirstResponder()
    }
    
    @IBAction func onInputPasswordKeyTap(_ sender: Any) {
        view.endEditing(true)
    }
    
    
    private func openWebPage(urlPage: String) {
        if let url = URL(string: urlPage) {
            if UIApplication.shared.canOpenURL(url) {
                if #available(iOS 10.0, *) {
                    UIApplication.shared.open(url)
                } else {
                    UIApplication.shared.openURL(url)
                }
            }
        }
    }
    
    private func showAlert(title: String, message: String, actionTitle: String) {
        let alertController = UIAlertController(
            title: title,
            message: message,
            preferredStyle: .alert)
        
        alertController.addAction(UIAlertAction(title: actionTitle, style: .default))
        
        self.present(alertController, animated: true, completion: nil)
    }
}

extension LoginVC: LoginViewDelegate {
    func showNoConnection() {
        let alertNoConnection = UIAlertController(
            title: alertNoConnectionTitle,
            message: alertNoConnectionMsg,
            preferredStyle: .alert
        )
        alertNoConnection.addAction(
            UIAlertAction(title: alertNoConnectionActionYes, style: .default, handler: nil)
        )
        self.present(alertNoConnection, animated: true, completion: nil)
    }
    
    func showLoading() {
        loading = true
        progress.show()
    }
    
    func hideLoading() {
        loading = false
        progress.hide()
    }
    
    func onFailedLogin(message: String) {
        let alertLoginFailed = UIAlertController(
            title: alertLoginFailedTitle,
            message: message,
            preferredStyle: .alert
        )
        alertLoginFailed.addAction(
            UIAlertAction(title: alertLoginFailedActionYes, style: .default, handler: nil)
        )
        self.present(alertLoginFailed, animated: true, completion: nil)
    }
    
    func onSuccessLogin(user: User) {
        debugPrint(user)
        showProfileLayout()
    }

}

extension LoginVC: UITableViewDelegate, UITableViewDataSource {
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return optionsRoles.count
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        if let cell = tableView.dequeueReusableCell(withIdentifier: "AccountOptionCell", for: indexPath) as? OptionsCell {
            
            let optionItem = optionsRoles[indexPath.row]
            cell.updateViews(item: optionItem)
            
            return cell
        } else {
            return OptionsCell()
        }
    }
    
    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        var selectedRole = "Pilih Role"
        let selectedRoleId = optionsRoles[indexPath.row].value as! String
        
        if availableRoles.contains(selectedRoleId) {
            if selectedRoleId == CUSTOMER_ROLE_ID {
                selectedRole =  CUSTOMER_ROLE
            } else if selectedRoleId == OPERATOR_ROLE_ID {
                selectedRole =  OPERATOR_ROLE
            } else if selectedRoleId == KEPALA_SEKSI_ROLE_ID {
                selectedRole =  KEPALA_SEKSI_ROLE
            } else if selectedRoleId == KEPALA_SUB_DIREKTORAT_ROLE_ID {
                selectedRole =  KEPALA_SUB_DIREKTORAT_ROLE
            } else if selectedRoleId == DIREKTUR_ROLE_ID {
                selectedRole =  DIREKTUR_ROLE
            }
        }
        let saved = UserState.instance.saveRoleId(roleId: selectedRoleId)
        
        if saved {
            btnOptionsRoles.setTitle(selectedRole, for: .normal)
            optionsRolesLayout.hide()
        } else {
            btnOptionsRoles.setTitle(selectedRole, for: .normal)
            optionsRolesLayout.hide()
        }
        
    }
    
    
}