from ... import Orchestrator
import jinja2
import os
from inspect import signature # For detect count of def args
from ..Web import Basic

class ControlPanel():
    """
    Manage your control panel on the orchestrator

    .. code-block:: python

        # Usage example:
        lCPManager = Orchestrator.Managers.ControlPanel(inControlPanelNameStr="TestControlPanel",
            inJinja2TemplatePathStr="ControlPanel\\test.html", inJinja2TemplateRefreshBool = True)
    """
    mControlPanelNameStr = None
    mJinja2TemplatePathStr = None
    mJinja2TemplateFileNameStr = None
    mJinja2Loader = None
    mJinja2Env = None
    mJinja2Template = None
    mJinja2TemplateRefreshBool = None

    mBackwardCompatibilityHTMLDef = None
    mBackwardCompatibilityJSDef = None
    mBackwardCompatibilityJSONDef = None

    def __init__(self, inControlPanelNameStr, inJinja2TemplatePathStr = None, inJinja2TemplateRefreshBool = False):
        """
        Constructor of the control panel manager

        :param inControlPanelNameStr:
        :param inJinja2TemplatePathStr:
        """
        # Connect self witch pyOpenRPA via ControlPanelNameStr
        if inControlPanelNameStr in Orchestrator.GSettingsGet()["ServerDict"]["ControlPanelDict"]:
            raise Exception(f"Another control panel with name {inControlPanelNameStr} is already exists. Please resolve the error and restart")
        Orchestrator.GSettingsGet()["ServerDict"]["ControlPanelDict"][inControlPanelNameStr] = self
        self.Jinja2TemplatePathSet(inJinja2TemplatePathStr = inJinja2TemplatePathStr)
        self.mJinja2TemplateRefreshBool = inJinja2TemplateRefreshBool
        self.mControlPanelNameStr = inControlPanelNameStr # Set the name of the control panel

    def Jinja2TemplatePathSet(self, inJinja2TemplatePathStr):
        """
        Create Jinja2 env and load the template html

        :param inJinja2TemplatePathStr:
        :return:
        """
        if inJinja2TemplatePathStr is not None:
            lSystemLoaderPathStr = "/".join(inJinja2TemplatePathStr.split("\\")[0:-1])
            lTemplateFileNameStr = inJinja2TemplatePathStr.split("\\")[-1]
            self.mJinja2TemplateFileNameStr = lTemplateFileNameStr
            self.mJinja2Loader = jinja2.FileSystemLoader(lSystemLoaderPathStr)
            self.mJinja2Env = jinja2.Environment(loader=self.mJinja2Loader, trim_blocks=True)
            self.mJinja2Template = self.mJinja2Env.get_template(lTemplateFileNameStr)

    def Jinja2StrGenerate(self, inDataDict):
        """
        Generate the HTML str from the Jinja2. Pass the context inDataDict
        :param inDataDict:
        :return:
        """
        if self.mJinja2TemplateRefreshBool == True:
            self.mJinja2Template = self.mJinja2Env.get_template(self.mJinja2TemplateFileNameStr)
        lHTMLStr = self.mJinja2Template.render(**inDataDict) # Render the template into str
        return lHTMLStr

    def DataDictGenerate(self, inRequest):
        """

        :return:
        """
        lData = {}
        return lData

    def OnRefreshHTMLStr(self, inRequest):
        """
        Event to generate HTML code of the control panel when refresh time is over.
        Support backward compatibility for previous versions.
        :param inRequest:
        :return:
        """
        lHTMLStr = None
        lL = Orchestrator.OrchestratorLoggerGet()
        if self.mBackwardCompatibilityHTMLDef is None:
            if self.mJinja2Template is not None:
                lDataDict = self.OnRefreshHTMLDataDict(inRequest = inRequest)
                # Jinja code
                lHTMLStr = self.Jinja2StrGenerate(inDataDict=lDataDict)
        else:
            lHTMLStr = self.BackwardAdapterHTMLDef(inRequest=inRequest)
        # return the str
        return lHTMLStr

    def OnRefreshHTMLDataDict(self, inRequest):
        """
        Event to prepare data context for the futher Jinja2 HTML generation. You can override this def if you want some thing more data
        :return: dict
        """
        return self.DataDictGenerate(inRequest=inRequest)

    def OnRefreshJSONDict(self, inRequest):
        """
        Event to transmit some data from server side to the client side in JSON format. Call when page refresh is initialized

        :return: Dict type
        """
        lResultDict = None
        if self.mBackwardCompatibilityJSONDef is None:
            pass
        else:
            lResultDict = self.BackwardAdapterJSONDef(inRequest=inRequest)
        return lResultDict

    def OnInitJSStr(self, inRequest):
        """
        Event when orchestrator web page is init on the client side - you can transmit some java script code is str type to execute it once.

        :return: ""
        """
        lJSStr = ""
        if self.mBackwardCompatibilityJSDef is None:
            pass
        else:
            lJSStr = self.BackwardAdapterJSDef(inRequest=inRequest)
        return lJSStr

    def BackwardAdapterHTMLDef(self,inRequest):
        lGS = Orchestrator.GSettingsGet()
        lL = Orchestrator.OrchestratorLoggerGet()
        # HTMLRenderDef
        lItemHTMLRenderDef = self.mBackwardCompatibilityHTMLDef
        lResultStr = ""
        if lItemHTMLRenderDef is not None:  # Call def (inRequest, inGSettings) or def (inGSettings)
            lHTMLResult = None
            lDEFSignature = signature(lItemHTMLRenderDef)  # Get signature of the def
            lDEFARGLen = len(lDEFSignature.parameters.keys())  # get count of the def args
            try:
                if lDEFARGLen == 1:  # def (inGSettings)
                    lHTMLResult = lItemHTMLRenderDef(lGS)
                elif lDEFARGLen == 2:  # def (inRequest, inGSettings)
                    lHTMLResult = lItemHTMLRenderDef(inRequest, lGS)
                elif lDEFARGLen == 0:  # def ()
                    lHTMLResult = lItemHTMLRenderDef()
                # RunFunction
                # Backward compatibility up to 1.2.0 - call HTML generator if result has no "HTMLStr"
                if type(lHTMLResult) is str:
                    lResultStr = lHTMLResult
                elif "HTMLStr" in lHTMLResult or "JSONDict" in lHTMLResult:
                    lResultStr = lHTMLResult["HTMLStr"]
                else:
                    # Call backward compatibility HTML generator
                    lResultStr = Basic.HTMLControlPanelBC(inCPDict=lHTMLResult)
            except Exception as e:
                if lL: lL.exception(f"Error in control panel HTMLRenderDef. CP Key {self.mControlPanelNameStr}. Exception are below")
        return lResultStr


    def BackwardAdapterJSONDef(self,inRequest):
        lGS = Orchestrator.GSettingsGet()
        lL = Orchestrator.OrchestratorLoggerGet()
        # HTMLRenderDef
        lItemJSONGeneratorDef = self.mBackwardCompatibilityJSONDef
        lResultDict = {}
        if lItemJSONGeneratorDef is not None:  # Call def (inRequest, inGSettings) or def (inGSettings)
            lJSONResult = None
            lDEFSignature = signature(lItemJSONGeneratorDef)  # Get signature of the def
            lDEFARGLen = len(lDEFSignature.parameters.keys())  # get count of the def args
            try:
                if lDEFARGLen == 1:  # def (inGSettings)
                    lJSONResult = lItemJSONGeneratorDef(lGS)
                elif lDEFARGLen == 2:  # def (inRequest, inGSettings)
                    lJSONResult = lItemJSONGeneratorDef(inRequest, lGS)
                elif lDEFARGLen == 0:  # def ()
                    lJSONResult = lItemJSONGeneratorDef()
                # RunFunction
                # Backward compatibility up to 1.2.0 - call HTML generator if result has no "HTMLStr"
                lType = type(lJSONResult)
                if lType is str or lJSONResult is None or lType is int or lType is list or lType is dict or lType is bool or lType is float:
                    lResultDict = lJSONResult
                else:
                    if lL: lL.warning(f"JSONGenerator return bad type: {str(type(lJSONResult))}, CP Key {self.mControlPanelNameStr}")
            except Exception as e:
                if lL: lL.exception(
                    f"Error in control panel JSONGeneratorDef. CP Key {self.mControlPanelNameStr}. Exception are below")
        return lResultDict

    def BackwardAdapterJSDef(self,inRequest):
        lGS = Orchestrator.GSettingsGet()
        lL = Orchestrator.OrchestratorLoggerGet()
        # HTMLRenderDef
        lJSInitGeneratorDef = self.mBackwardCompatibilityJSDef
        lResultStr = ""
        if lJSInitGeneratorDef is not None:  # Call def (inRequest, inGSettings) or def (inGSettings)
            lJSResult = ""
            lDEFSignature = signature(lJSInitGeneratorDef)  # Get signature of the def
            lDEFARGLen = len(lDEFSignature.parameters.keys())  # get count of the def args
            try:
                if lDEFARGLen == 1:  # def (inGSettings)
                    lJSResult = lJSInitGeneratorDef(lGS)
                elif lDEFARGLen == 2:  # def (inRequest, inGSettings)
                    lJSResult = lJSInitGeneratorDef(inRequest, lGS)
                elif lDEFARGLen == 0:  # def ()
                    lJSResult = lJSInitGeneratorDef()
                if type(lJSResult) is str:
                    lResultStr = lJSResult  # Add delimiter to some cases
                else:
                    if lL: lL.warning(f"JSInitGenerator return bad type: {str(type(lJSResult))}, CP Key {self.mControlPanelNameStr}")
            except Exception as e:
                if lL: lL.exception(
                    f"Error in control panel JSInitGeneratorDef. CP Key {self.mControlPanelNameStr}. Exception are below")
        return lResultStr