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import wx

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from PLCControler import LOCATION_CONFNODE, LOCATION_MODULE, LOCATION_GROUP, LOCATION_VAR_INPUT, LOCATION_VAR_OUTPUT, LOCATION_VAR_MEMORY

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from ConfigTreeNode import ConfigTreeNode

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from ConfigEditor import NodeEditor

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TYPECONVERSION = {"BOOL" : "X", "SINT" : "B", "INT" : "W", "DINT" : "D", "LINT" : "L",

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    "USINT" : "B", "UINT" : "W", "UDINT" : "D", "ULINT" : "L", 

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    "BYTE" : "B", "WORD" : "W", "DWORD" : "D", "LWORD" : "L"}

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DATATYPECONVERSION = {"BOOL" : "BIT", "SINT" : "S8", "INT" : "S16", "DINT" : "S32", "LINT" : "S64",

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    "USINT" : "U8", "UINT" : "U16", "UDINT" : "U32", "ULINT" : "U64", 

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    "BYTE" : "U8", "WORD" : "U16", "DWORD" : "U32", "LWORD" : "U64"}

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VARCLASSCONVERSION = {"T": LOCATION_VAR_INPUT, "R": LOCATION_VAR_OUTPUT, "RT": LOCATION_VAR_MEMORY}

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def ExtractHexDecValue(value):

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    try:

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        return int(value)

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    except:

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        pass

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    try:

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        return int(value.replace("#", "0"), 16)

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    except:

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        raise ValueError, "Invalid value for HexDecValue \"%s\"" % value

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def GenerateHexDecValue(value, base=10):

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    if base == 10:

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        return str(value)

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    elif base == 16:

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        return "#x%.8x" % value

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    else:

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        raise ValueError, "Not supported base"

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def ExtractName(names, default=None):

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    if len(names) == 1:

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        return names[0].getcontent()

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    else:

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        for name in names:

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            if name.getLcId() == 1033:

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                return name.getcontent()

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    return default

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#--------------------------------------------------

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#                    Ethercat Node

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#--------------------------------------------------

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class _EthercatSlaveCTN:

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    NODE_PROFILE = None

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    EditorType = NodeEditor

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    def GetIconName(self):

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        return "Slave"

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    def ExtractHexDecValue(self, value):

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        return ExtractHexDecValue(value)

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    def GetSizeOfType(self, type):

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        return TYPECONVERSION.get(self.GetCTRoot().GetBaseType(type), None)

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    def GetSlavePos(self):

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        return self.BaseParams.getIEC_Channel()

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    def GetParamsAttributes(self, path = None):

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        if path:

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            parts = path.split(".", 1)

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            if self.MandatoryParams and parts[0] == self.MandatoryParams[0]:

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                return self.MandatoryParams[1].getElementInfos(parts[0], parts[1])

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            elif self.CTNParams and parts[0] == self.CTNParams[0]:

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                return self.CTNParams[1].getElementInfos(parts[0], parts[1])

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        else:

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            params = []

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            if self.CTNParams:

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                params.append(self.CTNParams[1].getElementInfos(self.CTNParams[0]))

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            else:

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                params.append({

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                    'use': 'required', 

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                    'type': 'element', 

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                    'name': 'SlaveParams', 

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                    'value': None, 

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                    'children': []

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                })

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            slave_type = self.CTNParent.GetSlaveType(self.GetSlavePos())

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            params[0]['children'].insert(0,

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                   {'use': 'optional', 

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                    'type': self.CTNParent.GetSlaveTypesLibrary(self.NODE_PROFILE), 

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                    'name': 'Type', 

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                    'value': (slave_type["device_type"], slave_type)}) 

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            params[0]['children'].insert(1,

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                   {'use': 'optional', 

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                    'type': 'unsignedLong', 

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                    'name': 'Alias', 

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                    'value': self.CTNParent.GetSlaveAlias(self.GetSlavePos())})

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            return params

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    def SetParamsAttribute(self, path, value):

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        position = self.BaseParams.getIEC_Channel()

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        if path == "SlaveParams.Type":

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            self.CTNParent.SetSlaveType(position, value)

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            slave_type = self.CTNParent.GetSlaveType(self.GetSlavePos())

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            value = (slave_type["device_type"], slave_type)

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            if self._View is not None:

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                wx.CallAfter(self._View.RefreshSlaveInfos)

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            return value, True

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        elif path == "SlaveParams.Alias":

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            self.CTNParent.SetSlaveAlias(position, value)

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            return value, True

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        value, refresh = ConfigTreeNode.SetParamsAttribute(self, path, value)

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        # Filter IEC_Channel, Slave_Type and Alias that have specific behavior

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        if path == "BaseParams.IEC_Channel" and value != position:

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            self.CTNParent.SetSlavePosition(position, value)

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        return value, refresh

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    def GetSlaveInfos(self):

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        return self.CTNParent.GetSlaveInfos(self.GetSlavePos())

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    def GetSlaveVariables(self, limits):

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        return self.CTNParent.GetSlaveVariables(self.GetSlavePos(), limits)

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    def GetVariableLocationTree(self):

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        return  {"name": self.BaseParams.getName(),

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                 "type": LOCATION_CONFNODE,

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                 "location": self.GetFullIEC_Channel(),

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                 "children": self.CTNParent.GetDeviceLocationTree(self.GetSlavePos(), self.GetCurrentLocation(), self.BaseParams.getName())

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        }

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    def CTNGenerate_C(self, buildpath, locations):

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        return [],"",False