# encoding: UTF-8

import psutil

from uiBasicWidget import *
from ctaAlgo.uiCtaWidget import CtaEngineManager
from dataRecorder.uiDrWidget import DrEngineManager
from riskManager.uiRmWidget import RmEngineManager

########################################################################
class MainWindow(QtGui.QMainWindow):
    """主窗口"""
    signalStatusBar = QtCore.pyqtSignal(type(Event()))

    #----------------------------------------------------------------------
    def __init__(self, mainEngine, eventEngine):
        """Constructor"""
        super(MainWindow, self).__init__()
        
        self.mainEngine = mainEngine
        self.eventEngine = eventEngine
        
        self.widgetDict = {}    # 用来保存子窗口的字典
        
        self.initUi()
        self.loadWindowSettings()
        
    #----------------------------------------------------------------------
    def initUi(self):
        """初始化界面"""
        self.setWindowTitle('VnTrader')
        self.initCentral()
        self.initMenu()
        self.initStatusBar()
        
    #----------------------------------------------------------------------
    def initCentral(self):
        """初始化中心区域"""
        widgetMarketM, dockMarketM = self.createDock(MarketMonitor, u'行情', QtCore.Qt.RightDockWidgetArea)
        widgetLogM, dockLogM = self.createDock(LogMonitor, u'日志', QtCore.Qt.BottomDockWidgetArea)
        widgetErrorM, dockErrorM = self.createDock(ErrorMonitor, u'错误', QtCore.Qt.BottomDockWidgetArea)
        widgetTradeM, dockTradeM = self.createDock(TradeMonitor, u'成交', QtCore.Qt.BottomDockWidgetArea)
        widgetOrderM, dockOrderM = self.createDock(OrderMonitor, u'委托', QtCore.Qt.RightDockWidgetArea)
        widgetPositionM, dockPositionM = self.createDock(PositionMonitor, u'持仓', QtCore.Qt.BottomDockWidgetArea)
        widgetAccountM, dockAccountM = self.createDock(AccountMonitor, u'资金', QtCore.Qt.BottomDockWidgetArea)
        widgetTradingW, dockTradingW = self.createDock(TradingWidget, u'交易', QtCore.Qt.LeftDockWidgetArea)
        widgetPriceM, dockPriceM = self.createDock(PriceWidget, u'Price', QtCore.Qt.RightDockWidgetArea)
    
        self.tabifyDockWidget(dockTradeM, dockErrorM)
        self.tabifyDockWidget(dockTradeM, dockLogM)
        self.tabifyDockWidget(dockPositionM, dockAccountM)
    
        dockTradeM.raise_()
        dockPositionM.raise_()
    
        # 连接组件之间的信号
        widgetPositionM.itemDoubleClicked.connect(widgetTradingW.closePosition)
        
    #----------------------------------------------------------------------
    def initMenu(self):
        """初始化菜单"""
        # 创建操作
        connectCtpAction = QtGui.QAction(u'连接CTP', self)
        connectCtpAction.triggered.connect(self.connectCtp)
        
        connectLtsAction = QtGui.QAction(u'连接LTS', self)
        connectLtsAction.triggered.connect(self.connectLts)
        
        connectKsotpAction = QtGui.QAction(u'连接金仕达期权', self)
        connectKsotpAction.triggered.connect(self.connectKsotp)
        
        connectFemasAction = QtGui.QAction(u'连接飞马', self)
        connectFemasAction.triggered.connect(self.connectFemas)  
        
        connectXspeedAction = QtGui.QAction(u'连接飞创', self)
        connectXspeedAction.triggered.connect(self.connectXspeed)          
        
        connectKsgoldAction = QtGui.QAction(u'连接金仕达黄金', self)
        connectKsgoldAction.triggered.connect(self.connectKsgold)  
        
        connectSgitAction = QtGui.QAction(u'连接飞鼠', self)
        connectSgitAction.triggered.connect(self.connectSgit)         
        
        connectWindAction = QtGui.QAction(u'连接Wind', self)
        connectWindAction.triggered.connect(self.connectWind)
        
        connectIbAction = QtGui.QAction(u'连接IB', self)
        connectIbAction.triggered.connect(self.connectIb) 
        
        connectOandaAction = QtGui.QAction(u'连接OANDA', self)
        connectOandaAction.triggered.connect(self.connectOanda)
        
        connectOkcoinAction = QtGui.QAction(u'连接OKCOIN', self)
        connectOkcoinAction.triggered.connect(self.connectOkcoin)        
        
        connectDbAction = QtGui.QAction(u'连接数据库', self)
        connectDbAction.triggered.connect(self.mainEngine.dbConnect)
        
        testAction = QtGui.QAction(u'测试', self)
        testAction.triggered.connect(self.test)
        
        exitAction = QtGui.QAction(u'退出', self)
        exitAction.triggered.connect(self.close)
        
        aboutAction = QtGui.QAction(u'关于', self)
        aboutAction.triggered.connect(self.openAbout)
        
        contractAction = QtGui.QAction(u'查询合约', self)
        contractAction.triggered.connect(self.openContract)
        
        drAction = QtGui.QAction(u'行情数据记录', self)
        drAction.triggered.connect(self.openDr)
        
        ctaAction = QtGui.QAction(u'CTA策略', self)
        ctaAction.triggered.connect(self.openCta)
        
        rmAction = QtGui.QAction(u'风险管理', self)
        rmAction.triggered.connect(self.openRm)        
        
        # 创建菜单
        menubar = self.menuBar()
        
        # 设计为只显示存在的接口
        sysMenu = menubar.addMenu(u'系统')
        if 'CTP' in self.mainEngine.gatewayDict:
            sysMenu.addAction(connectCtpAction)
        if 'LTS' in self.mainEngine.gatewayDict:
            sysMenu.addAction(connectLtsAction)
        if 'FEMAS' in self.mainEngine.gatewayDict:
            sysMenu.addAction(connectFemasAction)
        if 'XSPEED' in self.mainEngine.gatewayDict:
            sysMenu.addAction(connectXspeedAction)
        if 'KSOTP' in self.mainEngine.gatewayDict:
            sysMenu.addAction(connectKsotpAction)
        if 'KSGOLD' in self.mainEngine.gatewayDict:
            sysMenu.addAction(connectKsgoldAction)
        if 'SGIT' in self.mainEngine.gatewayDict:
            sysMenu.addAction(connectSgitAction)
        sysMenu.addSeparator()
        if 'IB' in self.mainEngine.gatewayDict:
            sysMenu.addAction(connectIbAction)    
        if 'OANDA' in self.mainEngine.gatewayDict:
            sysMenu.addAction(connectOandaAction)
        if 'OKCOIN' in self.mainEngine.gatewayDict:
            sysMenu.addAction(connectOkcoinAction)        
        sysMenu.addSeparator()
        if 'Wind' in self.mainEngine.gatewayDict:
            sysMenu.addAction(connectWindAction)
        sysMenu.addSeparator()
        sysMenu.addAction(connectDbAction)
        sysMenu.addSeparator()
        sysMenu.addAction(exitAction)
        
        functionMenu = menubar.addMenu(u'功能')
        functionMenu.addAction(contractAction)
        functionMenu.addAction(drAction)
        functionMenu.addAction(rmAction)
        
        # 算法相关
        algoMenu = menubar.addMenu(u'算法')
        algoMenu.addAction(ctaAction)
        
        # 帮助
        helpMenu = menubar.addMenu(u'帮助')
        helpMenu.addAction(aboutAction)  
        helpMenu.addAction(testAction)
    
    #----------------------------------------------------------------------
    def initStatusBar(self):
        """初始化状态栏"""
        self.statusLabel = QtGui.QLabel()
        self.statusLabel.setAlignment(QtCore.Qt.AlignLeft)
        
        self.statusBar().addPermanentWidget(self.statusLabel)
        self.statusLabel.setText(self.getCpuMemory())
        
        self.sbCount = 0
        self.sbTrigger = 10     # 10秒刷新一次
        self.signalStatusBar.connect(self.updateStatusBar)
        self.eventEngine.register(EVENT_TIMER, self.signalStatusBar.emit)
        
    #----------------------------------------------------------------------
    def updateStatusBar(self, event):
        """在状态栏更新CPU和内存信息"""
        self.sbCount += 1
        
        if self.sbCount == self.sbTrigger:
            self.sbCount = 0
            self.statusLabel.setText(self.getCpuMemory())
    
    #----------------------------------------------------------------------
    def getCpuMemory(self):
        """获取CPU和内存状态信息"""
        cpuPercent = psutil.cpu_percent()
        memoryPercent = psutil.virtual_memory().percent
        return u'CPU使用率：%d%%   内存使用率：%d%%' % (cpuPercent, memoryPercent)        
        
    #----------------------------------------------------------------------
    def connectCtp(self):
        """连接CTP接口"""
        self.mainEngine.connect('CTP')
        
    #----------------------------------------------------------------------
    def connectLts(self):
        """连接LTS接口"""
        self.mainEngine.connect('LTS')    
        
    #----------------------------------------------------------------------
    def connectKsotp(self):
        """连接金仕达期权接口"""
        self.mainEngine.connect('KSOTP')        
        
    #----------------------------------------------------------------------
    def connectFemas(self):
        """连接飞马接口"""
        self.mainEngine.connect('FEMAS')        
    
    #----------------------------------------------------------------------
    def connectXspeed(self):
        """连接飞马接口"""
        self.mainEngine.connect('XSPEED')             
    
    #----------------------------------------------------------------------
    def connectKsgold(self):
        """连接金仕达黄金接口"""
        self.mainEngine.connect('KSGOLD')            
        
    #----------------------------------------------------------------------
    def connectSgit(self):
        """连接飞鼠接口"""
        self.mainEngine.connect('SGIT')     
    
    #----------------------------------------------------------------------
    def connectWind(self):
        """连接Wind接口"""
        self.mainEngine.connect('Wind')
    
    #----------------------------------------------------------------------
    def connectIb(self):
        """连接Ib"""
        self.mainEngine.connect('IB')
        
    #----------------------------------------------------------------------
    def connectOanda(self):
        """连接OANDA"""
        self.mainEngine.connect('OANDA')
        
    #----------------------------------------------------------------------
    def connectOkcoin(self):
        """连接OKCOIN"""
        self.mainEngine.connect('OKCOIN')    
        
    #----------------------------------------------------------------------
    def test(self):
        """测试按钮用的函数"""
        # 有需要使用手动触发的测试函数可以写在这里
        pass

    #----------------------------------------------------------------------
    def openAbout(self):
        """打开关于"""
        try:
            self.widgetDict['aboutW'].show()
        except KeyError:
            self.widgetDict['aboutW'] = AboutWidget(self)
            self.widgetDict['aboutW'].show()
    
    #----------------------------------------------------------------------
    def openContract(self):
        """打开合约查询"""
        try:
            self.widgetDict['contractM'].show()
        except KeyError:
            self.widgetDict['contractM'] = ContractMonitor(self.mainEngine)
            self.widgetDict['contractM'].show()
            
    #----------------------------------------------------------------------
    def openCta(self):
        """打开CTA组件"""
        try:
            self.widgetDict['ctaM'].showMaximized()
        except KeyError:
            self.widgetDict['ctaM'] = CtaEngineManager(self.mainEngine.ctaEngine, self.eventEngine)
            self.widgetDict['ctaM'].showMaximized()
            
    #----------------------------------------------------------------------
    def openDr(self):
        """打开行情数据记录组件"""
        try:
            self.widgetDict['drM'].showMaximized()
        except KeyError:
            self.widgetDict['drM'] = DrEngineManager(self.mainEngine.drEngine, self.eventEngine)
            self.widgetDict['drM'].showMaximized()
            
    #----------------------------------------------------------------------
    def openRm(self):
        """打开组件"""
        try:
            self.widgetDict['rmM'].show()
        except KeyError:
            self.widgetDict['rmM'] = RmEngineManager(self.mainEngine.rmEngine, self.eventEngine)
            self.widgetDict['rmM'].show()      
    
    #----------------------------------------------------------------------
    def closeEvent(self, event):
        """关闭事件"""
        reply = QtGui.QMessageBox.question(self, u'退出',
                                           u'确认退出?', QtGui.QMessageBox.Yes | 
                                           QtGui.QMessageBox.No, QtGui.QMessageBox.No)

        if reply == QtGui.QMessageBox.Yes: 
            for widget in self.widgetDict.values():
                widget.close()
            self.saveWindowSettings()
            
            self.mainEngine.exit()
            event.accept()
        else:
            event.ignore()
            
    #----------------------------------------------------------------------
    def createDock(self, widgetClass, widgetName, widgetArea):
        """创建停靠组件"""
        widget = widgetClass(self.mainEngine, self.eventEngine)
        dock = QtGui.QDockWidget(widgetName)
        dock.setWidget(widget)
        dock.setObjectName(widgetName)
        dock.setFeatures(dock.DockWidgetFloatable|dock.DockWidgetMovable)
        self.addDockWidget(widgetArea, dock)
        return widget, dock
    
    #----------------------------------------------------------------------
    def saveWindowSettings(self):
        """保存窗口设置"""
        settings = QtCore.QSettings('vn.py', 'vn.trader')
        settings.setValue('state', self.saveState())
        settings.setValue('geometry', self.saveGeometry())
        
    #----------------------------------------------------------------------
    def loadWindowSettings(self):
        """载入窗口设置"""
        settings = QtCore.QSettings('vn.py', 'vn.trader')
        # 这里由于PyQt4的版本不同，settings.value('state')调用返回的结果可能是：
        # 1. None（初次调用，注册表里无相应记录，因此为空）
        # 2. QByteArray（比较新的PyQt4）
        # 3. QVariant（以下代码正确执行所需的返回结果）
        # 所以为了兼容考虑，这里加了一个try...except，如果是1、2的情况就pass
        # 可能导致主界面的设置无法载入（每次退出时的保存其实是成功了）
        try:
            self.restoreState(settings.value('state').toByteArray())
            self.restoreGeometry(settings.value('geometry').toByteArray())    
        except AttributeError:
            pass


########################################################################
class AboutWidget(QtGui.QDialog):
    """显示关于信息"""

    #----------------------------------------------------------------------
    def __init__(self, parent=None):
        """Constructor"""
        super(AboutWidget, self).__init__(parent)

        self.initUi()

    #----------------------------------------------------------------------
    def initUi(self):
        """"""
        self.setWindowTitle(u'关于VnTrader')

        text = u"""
            Developed by traders, for traders.

            License：MIT
            
            Website：www.vnpy.org

            Github：www.github.com/vnpy/vnpy
            
            """

        label = QtGui.QLabel()
        label.setText(text)
        label.setMinimumWidth(500)

        vbox = QtGui.QVBoxLayout()
        vbox.addWidget(label)

        self.setLayout(vbox)
    