from PySide6.QtWidgets import (
    QWidget, QLabel, QLineEdit, QPushButton, QComboBox, QGridLayout, QHBoxLayout, QVBoxLayout
)
from PySide6.QtGui import QFont
from PySide6.QtCore import Qt

class LoginUI(QWidget):
    def __init__(self, parent=None):
        super().__init__(parent)
        self.setWindowTitle("用户登录")
        self.resize(350, 220)
        self.init_ui()

    def init_ui(self):
        font_title = QFont("微软雅黑", 18, QFont.Bold)
        font_label = QFont("微软雅黑", 12)
        font_input = QFont("微软雅黑", 12)
        font_version = QFont("微软雅黑", 8)

        # 标题
        self.label_title = QLabel("MES管理系统")
        self.label_title.setFont(font_title)
        self.label_title.setStyleSheet("color: #1a237e;")
        self.label_title.setAlignment(Qt.AlignCenter)
        self.label_title.setFixedHeight(40)

        # 工号
        self.label_user = QLabel("工号：")
        self.label_user.setFont(font_label)
        self.label_user.setFixedWidth(50)
        self.edit_user = QLineEdit()
        self.edit_user.setFont(font_input)
        self.edit_user.setFixedHeight(28)

        # 密码
        self.label_pwd = QLabel("密码：")
        self.label_pwd.setFont(font_label)
        self.label_pwd.setFixedWidth(50)
        self.edit_pwd = QLineEdit()
        self.edit_pwd.setFont(font_input)
        self.edit_pwd.setEchoMode(QLineEdit.Password)
        self.edit_pwd.setFixedHeight(28)

        # 按钮
        self.btn_login = QPushButton("登陆")
        self.btn_close = QPushButton("关闭")
        self.btn_login.setFixedWidth(90)
        self.btn_close.setFixedWidth(90)
        self.btn_login.setFixedHeight(30)
        self.btn_close.setFixedHeight(30)

        btn_layout = QHBoxLayout()
        btn_layout.addStretch(1)
        btn_layout.addWidget(self.btn_login)
        btn_layout.addSpacing(30)
        btn_layout.addWidget(self.btn_close)
        btn_layout.addStretch(1)

        # 版本标签
        self.version_label = QLabel("版本: 1.0.0")
        self.version_label.setFont(font_version)
        self.version_label.setStyleSheet("color: #666666;")
        self.version_label.setAlignment(Qt.AlignRight)

        # 表单布局
        form_layout = QGridLayout()
        form_layout.setHorizontalSpacing(10)
        form_layout.setVerticalSpacing(18)
        form_layout.addWidget(self.label_user, 1, 0)
        form_layout.addWidget(self.edit_user, 1, 1)
        form_layout.addWidget(self.label_pwd, 2, 0)
        form_layout.addWidget(self.edit_pwd, 2, 1)

        # 主布局
        main_layout = QVBoxLayout()
        main_layout.addSpacing(8)
        main_layout.addWidget(self.label_title)
        main_layout.addSpacing(5)
        main_layout.addLayout(form_layout)
        main_layout.addSpacing(10)
        main_layout.addLayout(btn_layout)
        main_layout.addStretch(1)
        main_layout.addWidget(self.version_label)
        main_layout.addSpacing(5)
        self.setLayout(main_layout)