import re
from PyQt5.QtWidgets import (
    QPushButton, QHBoxLayout,
    QGroupBox,   QLabel,
    QLineEdit,   QWidget,
    QVBoxLayout, QComboBox,
    QGridLayout, QMessageBox
)
from src.app import mainLogin, mainHome, mainLogout
from src.database.dbuser import DbUser


def core_register(mainWindow: object, email: str, password: str, userStatus: str) -> None:
    """"""
    dbuser:     object = DbUser(mainWindow)
    regNumb:    str    = "[0-9]"
    regUpper:   str    = "[A-Z]"
    regSpecial: str    = "[`!@#$%^&*()_+\-=\[\]{};':\"\\|,.<>\/?~µ°€£]"
    regEmail:   str    = "^[a-z0-9._-]+@[a-z0-9-]+\.[a-z]+"
    # Si vide
    if not email:
        QMessageBox.warning(
            mainWindow,
            "Email invalide",
            "Veuillez renseigner un email"
        )
        return

    if not password:
        QMessageBox.warning(
            mainWindow,
            "Mot de passe invalide",
            "Veuillez renseigner un mot de passe"
        )
        return

    if userStatus == None:
        QMessageBox.warning(
            mainWindow,
            "Mauvais rôle",
            "Veuillez selectionner un rôle"
        )
        return

    # les regex
    if not re.fullmatch(regEmail, email):
        QMessageBox.warning(
            mainWindow,
            "Email invalid",
            "Email non conforme"
        )
        return

    if len(password) < 8\
            or not re.search(regNumb, password)\
            or not re.search(regUpper, password)\
            or not re.search(regSpecial, password):
        QMessageBox.warning(
            mainWindow,
            "Mot de passe invalide",
            ("Le mot de passe doit avoir:\n"
            "-Au moins 8 characters\n"
            "-Une majuscule\n"
            "-Un chiffre\n"
            "-Un character spécial")
        )
        return

    # si email deja présent
    if dbuser.check_exist_email(email):
        QMessageBox.warning(
            mainWindow,
            "Email invalid",
            "Email déja utilisé"
        )
        return

    succes: int = dbuser.register_user(email, password, userStatus)
    if succes:
        QMessageBox.information(
            mainWindow,
            "Inscription",
            "Inscription réussie!"
        )
        mainHome.window_main(mainWindow)
    else:
        QMessageBox.warning(
            mainWindow,
            "Erreur bdd",
            "Erreur lors de l'inscritpion"
        )


def window_main(mainWindow: object) -> None:
    """"""
    if not mainWindow.userConnected:
        connexionState: object = QLabel("Non connecté.")
    else:
        connexionState: object = QLabel(
            f"Connecté: {mainWindow.userEmail} - {mainWindow.userStatus}"
        )

    btnAccueil: object = QPushButton("Accueil")
    btnAccueil.clicked.connect(lambda: mainHome.window_main(mainWindow))
    #
    if not mainWindow.userConnected:
        btnConnexion:   object = QPushButton("Connexion")
        btnConnexion.clicked.connect(lambda: mainLogin.window_main(mainWindow))
    else:
        btnDeconnexion: object = QPushButton("Déconnexion")
        btnDeconnexion.clicked.connect(
            lambda: [
                mainLogout.core_logout(mainWindow),
                mainHome.window_main(mainWindow, True)
            ]
        )

    layoutUser: object = QHBoxLayout()
    layoutUser.addWidget(btnAccueil)
    layoutUser.addStretch()
    if not mainWindow.userConnected:
        layoutUser.addWidget(btnConnexion)
    else:
        layoutUser.addWidget(btnDeconnexion)

    grpUtilisateur: object = QGroupBox("Gestion de l'utilisateur")
    grpUtilisateur.setLayout(layoutUser)
    #
    labMail:       object = QLabel("Email")
    leditMail:     object = QLineEdit(maxLength=128)
    labPassword:   object = QLabel("Mot de passe")
    leditPassword: object = QLineEdit(maxLength=128)
    leditPassword.setEchoMode(QLineEdit.Password)
    labStatus:   object = QLabel("Rôle")
    comboStatus: object = QComboBox()
    comboStatus.addItem("Admin", 0)
    comboStatus.addItem("Pro", 1)
    comboStatus.addItem("Client", 2)
    #
    btnRegister: object = QPushButton("S'inscrire")
    btnRegister.clicked.connect(
        lambda: core_register(
            mainWindow,
            leditMail.text(),
            leditPassword.text(),
            comboStatus.currentData()
        )
    )
    #
    LayoutInfoConnexion:  object = QGridLayout()
    LayoutInfoConnexion.addWidget(labMail, 0, 0)
    LayoutInfoConnexion.addWidget(leditMail, 0, 1)
    LayoutInfoConnexion.addWidget(labPassword, 1, 0)
    LayoutInfoConnexion.addWidget(leditPassword, 1, 1)
    LayoutInfoConnexion.addWidget(labStatus, 2, 0)
    LayoutInfoConnexion.addWidget(comboStatus, 2, 1)
    LayoutInfoConnexion.addWidget(btnRegister, 3, 1)
    #
    layoutGroupConnexion: object = QHBoxLayout()
    layoutGroupConnexion.addStretch()
    layoutGroupConnexion.addLayout(LayoutInfoConnexion)
    layoutGroupConnexion.addStretch()
    grpConnexion: object = QGroupBox("Inscription")
    grpConnexion.setLayout(layoutGroupConnexion)
    #
    layoutMain:   object = QVBoxLayout()
    layoutMain.addWidget(connexionState)
    layoutMain.addWidget(grpUtilisateur)
    layoutMain.addStretch()
    layoutMain.addWidget(grpConnexion)
    layoutMain.addStretch()
    #
    mainWindow.mainWidget.deleteLater()
    mainWindow.mainWidget = QWidget()
    mainWindow.mainWidget.setLayout(layoutMain)
    mainWindow.setCentralWidget(mainWindow.mainWidget)