#!/usr/bin/env python
  
  # -*- coding: utf-8 -*-
  
  import time, os, instruments, inspect, sys, threading
  import PyQt4.QtGui as QtGui
  from PyQt4.QtCore import pyqtSlot
  
  #==============================================================================
  #==============================================================================
  
  class acq_routine():

      def __init__(self, instrument, channels, vtypes, address, path = os.getcwd(), samplingtime = 1, fileduration = 24*3600):
          exec('self.instrument = instruments.%s.%s(%s, %s, "%s")'%(instrument, instrument, channels, vtypes, address))

          self.path = path
          self.samplingtime = samplingtime
          self.fileduration = fileduration
  
      def makeTree(self):
          try:
              year = time.strftime("%Y", time.gmtime(self.t0))
              month = time.strftime("%Y-%m", time.gmtime(self.t0))
              os.chdir(self.path + '/' + year + '/' + month)
          except:
              try:
                  os.chdir(self.path + '/' + year)
                  os.mkdir(month)
                  os.chdir(self.path + '/' + year + '/' + month)
              except:
                  os.chdir(self.path)
                  os.mkdir(year)
                  os.chdir(self.path + '/' + year)
                  os.mkdir(month)
                  os.chdir(self.path + '/' + year + '/' + month)
  
      def connect(self):
          self.instrument.connect()
  
          self.t0 = time.time()
          self.filename = time.strftime("%Y%m%d-%H%M%S", time.gmtime(self.t0)) + '-' + self.instrument.model() + '.dat'
          self.makeTree()
          self.data_file = open(self.filename, 'wr', 0)
  
      def start(self):
          tic = time.time()
  
          if (time.time() - self.t0 >= self.fileduration) & (self.fileduration >0 ):
              self.data_file.close()
  
              self.t0 = time.time()
              self.filename = time.strftime("%Y%m%d-%H%M%S", time.gmtime(self.t0)) + '-' + self.instrument.model() + '.dat'
              self.makeTree()
              self.data_file = open(self.filename, 'wr', 0)
  
          #epoch time
          epoch = time.time()
          #MJD time
          mjd = epoch / 86400.0 + 40587
          # Meas values
          meas = self.instrument.getValue()
          meas = meas.replace(",", "\t")
          meas = meas.replace(";", "\t")
          meas = meas.replace("+", "")

          meas = meas.replace("E", "e")

  
          string = "%f\t%f\t%s" % (epoch, mjd, meas)
          self.data_file.write(string) # Write in a file
          print(string)
  
          self.thread = threading.Timer(self.samplingtime - (time.time() - tic), self.start)
          self.thread.start()
  
      def stop(self):
          self.thread.cancel()
          self.instrument.disconnect()
          self.data_file.close()
  
  #==============================================================================
  #==============================================================================
  
  class mainGui():
      def __init__(self):
          self.setWindow()
          self.setSignalsSlots()
          self.runApp()
  
      def setWindow(self):
          self.a = QtGui.QApplication(sys.argv)
          self.w = QtGui.QMainWindow()
          self.w.resize(640, 480)
          self.w.setWindowTitle('datalogger-gui')
  
          self.wid = QtGui.QWidget()
          self.w.setCentralWidget(self.wid)
          self.layout = QtGui.QGridLayout()
          self.wid.setLayout(self.layout)
  
          self.comboInst = QtGui.QComboBox()
          self.layout.addWidget(self.comboInst, 0, 0)

          self.address = QtGui.QLineEdit()

          self.address.setMinimumWidth(140)
          self.address.setMaximumWidth(140)
          self.layout.addWidget(self.address, 0, 1)

  
          self.startButton = QtGui.QPushButton()
          self.startButton.setText('Start log')

          self.layout.addWidget(self.startButton, 99, 0)

          self.startButton.setEnabled(False)

  
          self.stopButton = QtGui.QPushButton()
          self.stopButton.setText('Stop log')

          self.layout.addWidget(self.stopButton, 99, 1)

          self.stopButton.setEnabled(False)

  
          self.textDisplay = QtGui.QLabel()
          self.textDisplay.setText('>>')

          self.layout.addWidget(self.textDisplay, 99, 2)

  
          self.setComboInst()
          self.updateSignal()
  
      def setComboInst(self):
          for name, obj in inspect.getmembers(instruments):
              if inspect.ismodule(obj) and name.startswith('__') == False and name.startswith('abstract') == False:
                  self.comboInst.addItem(name)
  
      def setSignalsSlots(self):
          self.comboInst.currentIndexChanged.connect(self.updateSignal)
          self.startButton.clicked.connect(self.startLog)
          self.stopButton.clicked.connect(self.stopLog)
  
      def runApp(self):
          self.w.show()

          self.a.aboutToQuit.connect(self.closeEvent)

          sys.exit(self.a.exec_())

      def closeEvent(self):
          try:
              self.stopLog()
          except:
              pass
          print('Done')

      @pyqtSlot()
      def updateSignal(self):
          for i in reversed(range(5, self.layout.count())):
              self.layout.itemAt(i).widget().setParent(None)

          defaultAddress = ''

          channelsAviables = []
          vtypesAviables = []
  
          exec('channelsAviables = instruments.%s.ALL_CHANNELS'%self.comboInst.currentText())
          exec('vtypesAviables = instruments.%s.ALL_VAL_TYPE'%self.comboInst.currentText())

          exec('defaultAddress = instruments.%s.ADDRESS'%self.comboInst.currentText())

          self.address.setText(defaultAddress)

  
          self.checkBoxChannels = [None]*len(channelsAviables)
          self.chListVtypes = [None]*len(self.checkBoxChannels)
  
          for i in range(len(self.checkBoxChannels)):
              self.checkBoxChannels[i] = QtGui.QCheckBox()
              self.checkBoxChannels[i].setText(channelsAviables[i])
              self.checkBoxChannels[i].setChecked(False)
              self.chListVtypes[i] = QtGui.QListWidget()
              for vtype in vtypesAviables:
                  self.chListVtypes[i].addItem(vtype)
              self.chListVtypes[i].setCurrentRow(0)

              self.layout.addWidget(self.checkBoxChannels[i], i+3, 1)
              self.layout.addWidget(self.chListVtypes[i], i+3, 2)

              self.checkBoxChannels[i].stateChanged.connect(self.infoSignal)
              self.chListVtypes[i].currentItemChanged.connect(self.infoSignal)

          self.address.textChanged.connect(self.infoSignal)

          self.infoSignal()
  
      @pyqtSlot()
      def infoSignal(self):
          self.instToLog = self.comboInst.currentText()

          self.addressToLog = self.address.text()

          self.chToLog = []
          self.vTypeToLog = []
  
          for i in range(len(self.checkBoxChannels)):
              if self.checkBoxChannels[i].isChecked():

                  self.chListVtypes[i].setEnabled(True)

                  self.chToLog.append(str(self.checkBoxChannels[i].text()))
                  self.vTypeToLog.append(str(self.chListVtypes[i].currentItem().text()))

              else:
                  self.chListVtypes[i].setEnabled(False)

          allChannelsUnchecked = False
          for i in self.checkBoxChannels:
              allChannelsUnchecked = allChannelsUnchecked or i.isChecked()
          if allChannelsUnchecked == False:
              self.startButton.setEnabled(False)
          else:
              self.startButton.setEnabled(True)

          self.textDisplay.setText('>> %s@%s - %s - %s'%(self.instToLog, self.addressToLog, self.chToLog, self.vTypeToLog))

          self.myLog = acq_routine(self.instToLog, self.chToLog, self.vTypeToLog, self.addressToLog)

  
      @pyqtSlot()
      def startLog(self):

          self.startButton.setEnabled(False)
          self.stopButton.setEnabled(True)

          self.address.setEnabled(False)

          self.comboInst.setEnabled(False)

          for i in self.checkBoxChannels:
              i.setEnabled(False)

          for i in self.chListVtypes:
              i.setEnabled(False)

          self.myLog.connect()
          self.myLog.start()
  
      @pyqtSlot()
      def stopLog(self):

          self.startButton.setEnabled(True)
          self.stopButton.setEnabled(False)

          self.address.setEnabled(True)

          self.comboInst.setEnabled(True)

          for i in range(len(self.checkBoxChannels)):
              if self.checkBoxChannels[i].isChecked():
                  self.checkBoxChannels[i].setEnabled(True)
                  self.chListVtypes[i].setEnabled(True)
              else:
                  self.checkBoxChannels[i].setEnabled(True)
                  self.chListVtypes[i].setEnabled(False)

          self.myLog.stop()
  
  #==============================================================================
  #==============================================================================
  
  if __name__ == "__main__":
      mainGui()