from PyQt5.QtCore import (QCoreApplication, Qt)
from PyQt5.QtWidgets import (QVBoxLayout, QLabel, QLineEdit,
    QPushButton, QWidget, QComboBox, QMessageBox, QListView)

from utils.DBModels.ProtocolModel import TCPSetting

class CustomBox(QComboBox):
    def __init__(self):
        super(CustomBox, self).__init__()
        self.setCursor(Qt.PointingHandCursor)
        self.setView(QListView())

    def showPopup(self):
        super(CustomBox, self).showPopup()
        pop = self.children()[1]
        pop.move(pop.x(), pop.y() + 51)


class TCPSettingWidget(QWidget):
    def __init__(self, tcpType):
        super(TCPSettingWidget, self).__init__()
        self.tcpType = tcpType
        self.setObjectName("TCPSettingWidget")
        self.setupUI()

    def setupUI(self):
        # 主布局 - 垂直布局
        main_layout = QVBoxLayout(self)
        main_layout.setContentsMargins(0, 0, 0, 0)
        main_layout.setSpacing(8)

        # IP地址
        self.label = QLabel('IP地址')
        self.label.setObjectName("setlabel")
        self.ipEdit = QLineEdit()
        self.ipEdit.setObjectName("setEdit")
        main_layout.addWidget(self.label)
        main_layout.addWidget(self.ipEdit)

        # 端口号
        self.label_2 = QLabel('端口号')
        self.label_2.setObjectName("setlabel")
        self.portEdit = QLineEdit()
        self.portEdit.setObjectName("setEdit")
        main_layout.addWidget(self.label_2)
        main_layout.addWidget(self.portEdit)

        # 通讯频率
        self.label_3 = QLabel('通讯频率')
        self.label_3.setObjectName("setlabel")
        self.freEdit = QLineEdit()
        self.freEdit.setObjectName("setEdit")
        main_layout.addWidget(self.label_3)
        main_layout.addWidget(self.freEdit)

        # 起始值
        self.label_4 = QLabel('起始值')
        self.label_4.setObjectName('setlabel')
        self.offsetBox = CustomBox()
        self.offsetBox.addItem("1")
        self.offsetBox.addItem("0")
        self.offsetBox.setObjectName("setBox")
        main_layout.addWidget(self.label_4)
        main_layout.addWidget(self.offsetBox)

        # 保存按钮
        self.saveButton = QPushButton('保存')
        if self.tcpType == 'master':
            self.saveButton.setObjectName("tcpSaveButton")
        else:
            self.saveButton.setObjectName("setButton")
        self.saveButton.clicked.connect(self.saveSetting)
        main_layout.addWidget(self.saveButton)

        # 添加弹性空间
        main_layout.addStretch()

    def loadSettings(self):
        """加载设置数据"""
        try:
            if self.tcpType == 'master':
                query = TCPSetting.get_by_id(1)
            else:
                query = TCPSetting.get_by_id(2)
            
            port = str(query.port)
            host = str(query.host)
            frequency = str(query.frequency)
            offset = str(query.offset)

            self.ipEdit.setText(host)
            self.portEdit.setText(port)
            self.freEdit.setText(frequency)
            self.offsetBox.setCurrentText(offset)
        except Exception as e:
            print(f"加载TCP设置失败: {e}")
            # 设置默认值
            self.ipEdit.setText("127.0.0.1")
            self.portEdit.setText("502")
            self.freEdit.setText("1")
            self.offsetBox.setCurrentText("1")


    def saveSetting(self):
        """保存设置"""
        try:
            host = self.ipEdit.text()
            port = self.portEdit.text()
            frequency = self.freEdit.text()
            offset = self.offsetBox.currentText()
            
            if self.tcpType == 'master':
                TCPSetting.update(host=host, port=port, frequency=frequency, offset=offset).where(TCPSetting.tcpType == 'master').execute()
            else:
                TCPSetting.update(host=host, port=port, frequency=frequency, offset=offset).where(TCPSetting.tcpType == 'slave').execute()
            
            # 创建消息框
            QMessageBox.information(self, '保存成功', f'TCP{self.tcpType}站配置已保存！')
            
        except Exception as e:
            QMessageBox.critical(self, '保存失败', f'保存TCP设置时发生错误：{str(e)}')