import sys
import json
import webbrowser
import subprocess
from argparse import ArgumentParser

from PyQt5 import QtWidgets,QtGui

from ui.OpticsToolsGui import Ui_OpticsGUI
from plot import OpticsPlot
from model import Model
from machine import Machine
from reference import ReferenceManager
from sandbox import Sandbox
from matching import Matching
from elegant import Elegant

class OpticsTools(QtWidgets.QMainWindow, Ui_OpticsGUI):
    def __init__(self,phase=0, office= 1):
        super(OpticsTools, self).__init__()
        self.setupUi(self)

        office = office== 1
        self.version = '1.0.1'
        self.setWindowIcon(QtGui.QIcon("rsc/iconoptics.png"))

        self.plot = OpticsPlot(parent=self)
        self.plot.show()

        # initialize online model
        self.model = Model(phase=phase,parent=self)

        if phase > 0:
            office = True
        self.machine = Machine(parent = True, office = office)
        self.machine.initPVs(self.model.getElements())
        self.sandbox = Sandbox(parent = self, machine = self.machine)
        self.elegant=Elegant(parent=self,model=self.model)

        title = "SwissFEL Optics Tools - Lattice %s (Phase %d)" % (self.model.getLatticeVersion(),phase)
        if office:
            title += " - offline"
        self.setWindowTitle(title)

        # initialization
        self.loadSettingsdirect("Settings/ReferenceSetting.json")
        self.sandbox.updateSandbox()
        self.reference = ReferenceManager(parent=self)
        self.matching = Matching(parent=self, model=self.model, reference = self.reference)

#        events handling
        self.actionOpen_2.triggered.connect(self.loadSettings)
        self.actionSave.triggered.connect(self.saveSettings)
        self.UIUpdateFromMachine.clicked.connect(self.fullUpdate)
        self.actionHelp.triggered.connect(self.openGit)
        self.actionAbout.triggered.connect(self.about)
        self.actionOpenMatch.triggered.connect(self.loadMatchingConfig)
        self.actionOpenMatchEditor.triggered.connect(self.editMatchingConfig)
        self.actionOpenScriptEditor.triggered.connect(self.editMatchingScript)
        self.actionExportElegant.triggered.connect(self.exportElegant)

    def closeEvent(self, event):
        self.plot.close()
        event.accept()

    def about(self):
        QtWidgets.QMessageBox.about(self, "Optics Tool",
                                    "Version:%s\nContact: Sven Reiche\nEmail: sven.reiche@psi.ch" % self.version)

    def openGit(self):
        webbrowser.open("https://gitea.psi.ch/reiche/opticstool")

    def exportElegant(self):
        self.elegant.writeElegantFiles('Elegant','dummy','SATBD01')

    def loadMatchingConfig(self):
        options = QtWidgets.QFileDialog.Options()
        options |= QtWidgets.QFileDialog.DontUseNativeDialog
        fileName, _ = QtWidgets.QFileDialog.getOpenFileName(self, "Open Matching Config File",
                                                            "MatchingConfig/Reference.json",
                                                            "Json Files (*.json)", options=options)
        if not fileName:
            return
        self.reference.loadReference(fileName)

    def editMatchingConfig(self):
        options = QtWidgets.QFileDialog.Options()
        options |= QtWidgets.QFileDialog.DontUseNativeDialog
        fileName, _ = QtWidgets.QFileDialog.getOpenFileName(self, "Open Matching Config File",
                                                            "MatchingConfig/Reference.json",
                                                            "Json Files (*.json)", options=options)
        if not fileName:
            return
        subprocess.Popen(["emacs", fileName])

    def editMatchingScript(self):
        options = QtWidgets.QFileDialog.Options()
        options |= QtWidgets.QFileDialog.DontUseNativeDialog
        fileName, _ = QtWidgets.QFileDialog.getOpenFileName(self, "Open Matching Script File",
                                                            "Scripts/switchyard.madx",
                                                            "MadX Files (*.madx)", options=options)
        if not fileName:
            return
        subprocess.Popen(["emacs", fileName])

    def saveSettings(self):
        options = QtWidgets.QFileDialog.Options()
        options |= QtWidgets.QFileDialog.DontUseNativeDialog
        fileName, _ = QtWidgets.QFileDialog.getSaveFileName(self, "Save Settings",
                                                            "Settings/newSetting.json",
                                                            "Json Files (*.json)", options=options)
        if not fileName:
            return
        settings=self.model.getSettings()
        with open(fileName, 'w', encoding='utf-8') as f:
            json.dump(settings, f, ensure_ascii=False, indent=4)



    def loadSettings(self):
        options = QtWidgets.QFileDialog.Options()
        options |= QtWidgets.QFileDialog.DontUseNativeDialog
        fileName, _ = QtWidgets.QFileDialog.getOpenFileName(self, "Open Settings",
                                                            "Settings/ReferenceSetting.json",
                                                            "Json Files (*.json)", options=options)
        if not fileName:
            return
        self.loadSettingsdirect(fileName)

    def loadSettingsdirect(self,fileName):
        with open(fileName, 'r', encoding='utf-8') as f:
            settings = json.load(f)
        self.model.loadSettings(settings)
        self.status('Reference loaded')

    def fullUpdate(self):
        machine = self.machine.getMachineStatus()
        self.model.updateFromMachine(machine)
        self.sandbox.updateSandbox()
        self.status('Machine Settings')

    def status(self,msg=''):
        self.UIStatus.setText(msg)
    # --------------------------------
    # Main routine


if __name__ == '__main__':
    QtWidgets.QApplication.setStyle(QtWidgets.QStyleFactory.create("plastique"))
    parser = ArgumentParser()
    parser.add_argument('-phase', type=int, help='Disable any action on the machine', default=0)
    parser.add_argument('-offline', type=int, help='Excludes any connection to control system', default=1)
    args = parser.parse_args()
    app = QtWidgets.QApplication(sys.argv)
    
    main = OpticsTools(phase = args.phase, office = args.offline)
    if main:
        main.show()
    sys.exit(app.exec_())