import json

from PyQt5.QtWidgets import  QMainWindow,  QDialog, QTabWidget, QPushButton, QSpacerItem, QSizePolicy,QMessageBox, QHBoxLayout, QWidget
from PyQt5.QtGui import  QIcon
from PyQt5.QtCore import QSize

from UI.DeviceDialogWidget import DeviceDialog

from model.ProjectModel.DeviceManage import DevicesManange
from utils.DBModels.BaseModel import *
from UI.AreaTabWidget import AreaTabWidget
from utils.DBModels.DeviceModels import DeviceDB
from model.ProjectModel.DeviceManage import DevicesManange
from UI.DeviceDialogWidget import DeviceDialog

class DeviceWidget(QTabWidget):
    def __init__(self, dockWidget, devicesManange):
        super().__init__()
        self.dockWidget = dockWidget
        self.devicesManange = devicesManange
        self.setObjectName('deviceWidget')
        self.initUI()
        
    
    def initUI(self):
        #获取DP、PA协议和主从模式
        self.dataTypeAndModel = self.dockWidget.windowTitle()
        self.proType = self.dataTypeAndModel[0:2]
        self.masterSlaveModel = self.dataTypeAndModel[2:4]

        self.setObjectName('deviceTabWidget')

        self.addDeviceButton = QPushButton('添加设备')
        self.addDeviceButton.setObjectName('deviceAddButton')
        self.addDeviceButton.setIcon(QIcon('Static/add.png'))
        self.addDeviceButton.setFlat(True)
        self.addDeviceButton.clicked.connect(self.addDeviceWidget)

        self.setCornerWidget(self.addDeviceButton)
        self.setTabsClosable(True)
        self.tabCloseRequested.connect(self.closeTab)
        self.state = True
        self.initWidget()
    

    def closeTab(self, index):
        reply = QMessageBox.question(self, 'Confirmation', '确定删掉此设备吗?',
                                    QMessageBox.Yes | QMessageBox.No, QMessageBox.No)
        if reply == QMessageBox.Yes:
            if index != -1:
                deviceName = self.tabText(index) + self.dockWidget.windowTitle()
                # print(deviceName,index,222)
                self.removeTab(index)
            self.devicesManange.delDevice(deviceName = deviceName )
            DeviceDB.deleteDevice(deviceName = deviceName)  
        else:
            return
        if self.count() == 0:
            self.creatInitWidget()
       
        

    def addDeviceWidget(self,init = False,deviceName = None):
        if deviceName is None:
            dialog = DeviceDialog(self.dataTypeAndModel)
            if dialog.exec_() == QDialog.Accepted:
                self.titleName, pvUpperLimit, pvLowerLimit, pvUnit = dialog.getParameters()            
                self.deviceName = self.titleName + self.dataTypeAndModel
                DeviceDB().addDevice(deviceName = self.deviceName, proType = self.proType , masterSlaveModel = self.masterSlaveModel, pvUpperLimit=pvUpperLimit, pvLowerLimit=pvLowerLimit, pvUnit=pvUnit)
                areaTabWidget = AreaTabWidget(self)
                if init:
                    self.removeTab(0)
                tabIndex = self.count()
                self.tabBar().setHidden(False)
                self.addTab(areaTabWidget,str(self.titleName))
                self.setCurrentIndex(tabIndex)
                self.devicesManange.addDevice(proType=self.proType, masterSlaveModel = self.masterSlaveModel, deviceName = self.deviceName)
            else:
                return
        else:
            self.deviceName = deviceName
            self.titleName = self.deviceName[:-4]
            areaTabWidget = AreaTabWidget(self)
            self.tabBar().setHidden(False)
            self.addTab(areaTabWidget,str(self.titleName))
            
            

    def initWidget(self):
        alldevices = DevicesManange.getAllDevice()
        titleName = self.dockWidget.windowTitle()
        if alldevices:
            for devices in alldevices:
                deviceName = devices[0]
                
                if titleName in deviceName:
                    # print(devices,333)
                    self.devicesManange.addDevice(proType = devices[1], masterSlaveModel = devices[2], deviceName = devices[0]) 
                    self.addDeviceWidget(deviceName=deviceName) 
                    self.state = False
        if self.state:
            self.creatInitWidget()
            
    def creatInitWidget(self):
        widget = QWidget()
        widget.setObjectName('initWidget')
        layout = QHBoxLayout()
        addButton = QPushButton('添加设备')
        addButton.setObjectName('initAddDeviceButton')
        icon = QIcon('Static/add.png')
        iconSize = QSize(50,50)
        addButton.setIcon(icon)
        addButton.setIconSize(iconSize)
        addButton.clicked.connect(lambda: self.addDeviceWidget(True))
        layout.addWidget(QWidget())
        layout.addWidget(addButton)
        layout.addWidget(QWidget())
        widget.setLayout(layout)
        self.addTab(widget,'')
        self.tabBar().setHidden(True)