from loguru import logger
from PyQt6.QtCore import QRegularExpression, Qt, pyqtSignal
from PyQt6.QtGui import (
    QRegularExpressionValidator,
)
from PyQt6.QtWidgets import QHBoxLayout, QLabel, QVBoxLayout, QWidget
from qfluentwidgets import (
    CheckBox,
    LineEdit,
    PasswordLineEdit,
    PushButton,
)

from app.core import CaptchaThread,cfg, qconfig


class LoginWidget(QWidget):
    loginSignal = pyqtSignal(dict)

    def __init__(self, parent=None):
        logger.debug("初始化登录组件")
        super().__init__(parent)
        self.setObjectName("LoginWidget")
        self.setWindowTitle("LeonPan")

        self.emailLineEdit = LineEdit(self)
        self.emailLineEdit.setPlaceholderText("请输入邮箱")
        self.passwordLineEdit = PasswordLineEdit(self)
        self.passwordLineEdit.setPlaceholderText("请输入密码")
        self.rememberMeCheckBox = CheckBox("记住我", self)
        self.rememberMeCheckBox.checkStateChanged.connect(
            lambda: qconfig.set(cfg.rememberMe, self.rememberMeCheckBox.isChecked())
        )
        self.loginButton = PushButton("登录", self)
        self.loginButton.setDisabled(False)

        self.verificationCodeLabel = QLabel(self)
        self.verificationCodeLabel.setFixedSize(120, 35)
        self.verificationCodeLabel.setScaledContents(True)  # 设置图片自适应
        self.verificationCodeLabel.mousePressEvent = (
            self.refreshVerificationCode
        )  # 绑定点击事件
        self.verificationCodeLineEdit = LineEdit(self)
        self.verificationCodeLineEdit.setPlaceholderText("请输入验证码")
        self.verificationLayout = QHBoxLayout()
        self.verificationLayout.setAlignment(Qt.AlignmentFlag.AlignVCenter)
        self.verificationLayout.addWidget(self.verificationCodeLineEdit)
        self.verificationLayout.addWidget(self.verificationCodeLabel)

        self.vBoxLayout = QVBoxLayout(self)
        self.vBoxLayout.setAlignment(Qt.AlignmentFlag.AlignTop)
        self.vBoxLayout.addSpacing(10)
        self.vBoxLayout.addWidget(self.emailLineEdit)
        self.vBoxLayout.addSpacing(15)
        self.vBoxLayout.addWidget(self.passwordLineEdit)
        self.vBoxLayout.addSpacing(15)
        self.vBoxLayout.addLayout(self.verificationLayout)
        self.vBoxLayout.addSpacing(15)
        self.vBoxLayout.addWidget(
            self.rememberMeCheckBox, 0, Qt.AlignmentFlag.AlignLeft
        )

        self.vBoxLayout.addSpacing(15)
        self.vBoxLayout.addWidget(self.loginButton)

        email_regex = QRegularExpression(
            r"^[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+$"
        )
        # TODO: 内测时用的邮箱匹配

        # email_regex = QRegularExpression(r"^[a-zA-Z0-9_.+-]+@miaostars\.cn$")
        validator = QRegularExpressionValidator(email_regex, self)
        self.emailLineEdit.setValidator(validator)
        self.emailLineEdit.textChanged.connect(self.checkEmail)

        self.refreshVerificationCode()
        self.rememberMe()
        logger.debug("登录组件初始化完成")

    def rememberMe(self):
        logger.debug("检查记住我选项")
        if qconfig.get(cfg.rememberMe):
            logger.debug("已启用记住我功能，填充保存的邮箱和密码")
            self.emailLineEdit.setText(qconfig.get(cfg.email))
            self.passwordLineEdit.setText(qconfig.get(cfg.activationCode))
            self.rememberMeCheckBox.setChecked(True)
        else:
            logger.debug("已禁用记住我功能，清空保存的邮箱和密码")
            self.emailLineEdit.clear()
            self.passwordLineEdit.clear()

    def checkEmail(self, text):
        # 检查当前输入是否通过验证器
        state, _, _ = self.emailLineEdit.validator().validate(text, 0)
        if state == QRegularExpressionValidator.State.Acceptable:
            logger.debug("邮箱格式验证通过")
            self.loginButton.setDisabled(False)
        else:
            self.loginButton.setDisabled(True)

    def refreshVerificationCode(self, event=None):
        logger.debug("刷新验证码")
        self.verificationCodeLabel.setEnabled(False)
        self.captchaThread = CaptchaThread()
        self.captchaThread.captchaReady.connect(self._showVerificationCode)
        self.captchaThread.captchaFailed.connect(self._showCaptchaFailed)
        self.captchaThread.start()

    def _showVerificationCode(self, pixmap):
        logger.debug("显示验证码")
        self.verificationCodeLabel.setEnabled(True)
        self.verificationCodeLabel.setPixmap(pixmap)

    def _showCaptchaFailed(self, message):
        logger.debug(f"验证码刷新失败：{message}")
        self.verificationCodeLabel.setEnabled(True)
        self.verificationCodeLineEdit.clear()