#!/usr/bin/env/python
# -*- coding: utf-8 -*-

###
### Author:  Chris Iatrou (ichrispa@core-vector.net)
### Version: rev 13
###
### This program was created for educational purposes and has been
### contributed to the open62541 project by the author. All licensing
### terms for this source is inherited by the terms and conditions
### specified for by the open62541 project (see the projects readme
### file for more information on the LGPL terms and restrictions).
###
### This program is not meant to be used in a production environment. The
### author is not liable for any complications arising due to the use of
### this program.
###

from logger import *
from ua_constants import *
import string

__unique_item_id = 0

defined_typealiases = []

class open62541_MacroHelper():
  def __init__(self, supressGenerationOfAttribute=[]):
    self.supressGenerationOfAttribute = supressGenerationOfAttribute

  def getCreateExpandedNodeIDMacro(self, node):
    if node.id().i != None:
      return "UA_EXPANDEDNODEID_NUMERIC(" + str(node.id().ns) + ", " + str(node.id().i) + ")"
    elif node.id().s != None:
      return "UA_EXPANDEDNODEID_STRING("  + str(node.id().ns) + ", " + node.id().s + ")"
    elif node.id().b != None:
      log(self, "NodeID Generation macro for bytestrings has not been implemented.")
      return ""
    elif node.id().g != None:
      log(self, "NodeID Generation macro for guids has not been implemented.")
      return ""
    else:
      return ""

  def substitutePunctuationCharacters(self, input):
    ''' substitutePunctuationCharacters
    
        Replace punctuation characters in input. Part of this class because it is used by
        ua_namespace on occasion.
        
        returns: C-printable string representation of input
    '''
    # No punctuation characters <>!$
    illegal_chars = list(string.punctuation)
    # underscore is allowed
    illegal_chars.remove('_')

    illegal = "".join(illegal_chars)
    substitution = ""
    # Map all punctuation characters to underscore
    for illegal_char in illegal_chars:
        substitution = substitution + '_'

    return input.translate(string.maketrans(illegal, substitution), illegal)
  
  def getNodeIdDefineString(self, node):
    code = []
    extrNs = node.browseName().split(":")
    symbolic_name = ""
    # strip all characters that would be illegal in C-Code
    if len(extrNs) > 1:
        nodename = extrNs[1]
    else:
        nodename = extrNs[0]

    symbolic_name = self.substitutePunctuationCharacters(nodename)
    if symbolic_name != nodename :
        log(self, "Subsituted characters in browsename for nodeid " + str(node.id().i) + " while generating C-Code ", LOG_LEVEL_WARN)
    
    if symbolic_name in defined_typealiases:
      log(self, "Typealias definition of " + str(node.id().i) + " is non unique!", LOG_LEVEL_WARN)
      extendedN = 1
      while (symbolic_name+"_"+str(extendedN) in defined_typealiases):
        log(self, "Typealias definition of " + str(node.id().i) + " is non unique!", LOG_LEVEL_WARN)
        extendedN+=1
      symbolic_name = symbolic_name+"_"+str(extendedN) 
      
    defined_typealiases.append(symbolic_name)
      
    code.append("#define UA_NS"  + str(node.id().ns) + "ID_" + symbolic_name.upper() + " " + str(node.id().i))
    return code

  def getCreateNodeIDMacro(self, node):
    if node.id().i != None:
      return "UA_NODEID_NUMERIC(" + str(node.id().ns) + ", " + str(node.id().i) + ")"
    elif node.id().s != None:
      return "UA_NODEID_STRING("  + str(node.id().ns) + ", " + node.id().s + ")"
    elif node.id().b != None:
      log(self, "NodeID Generation macro for bytestrings has not been implemented.")
      return ""
    elif node.id().g != None:
      log(self, "NodeID Generation macro for guids has not been implemented.")
      return ""
    else:
      return ""

  def getCreateStandaloneReference(self, sourcenode, reference):
    code = []

    if reference.isForward():
      code.append("UA_Server_addReference(server, " + self.getCreateNodeIDMacro(sourcenode) + ", " + self.getCreateNodeIDMacro(reference.referenceType()) + ", " + self.getCreateExpandedNodeIDMacro(reference.target()) + ", true);")
    else:
      code.append("UA_Server_addReference(server, " + self.getCreateNodeIDMacro(sourcenode) + ", " + self.getCreateNodeIDMacro(reference.referenceType()) + ", " + self.getCreateExpandedNodeIDMacro(reference.target()) + ", false);")
    return code

  def getCreateNodeNoBootstrap(self, node, parentNode, parentReference, unprintedNodes):
    code = []
    code.append("// Node: " + str(node) + ", " + str(node.browseName()))

    if node.nodeClass() == NODE_CLASS_OBJECT:
      nodetype = "Object"
    elif node.nodeClass() == NODE_CLASS_VARIABLE:
      nodetype = "Variable"
    elif node.nodeClass() == NODE_CLASS_METHOD:
      nodetype = "Method"
    elif node.nodeClass() == NODE_CLASS_OBJECTTYPE:
      nodetype = "ObjectType"
    elif node.nodeClass() == NODE_CLASS_REFERENCETYPE:
      nodetype = "ReferenceType"
    elif node.nodeClass() == NODE_CLASS_VARIABLETYPE:
      nodetype = "VariableType"
    elif node.nodeClass() == NODE_CLASS_DATATYPE:
      nodetype = "DataType"
    elif node.nodeClass() == NODE_CLASS_VIEW:
      nodetype = "View"
    else:
      code.append("/* undefined nodeclass */")
      return code;

    # If this is a method, construct in/outargs for addMethod
    #inputArguments.arrayDimensionsSize = 0;
    #inputArguments.arrayDimensions = NULL;
    #inputArguments.dataType = UA_TYPES[UA_TYPES_STRING].typeId;

    # Node ordering should have made sure that arguments, if they exist, have not been printed yet
    if node.nodeClass() == NODE_CLASS_METHOD:
      inArgVal = []
      outArgVal = []
      code.append("UA_Argument *inputArguments = NULL;")
      code.append("UA_Argument *outputArguments = NULL;")
      for r in node.getReferences():
	if r.target() != None and r.target().nodeClass() == NODE_CLASS_VARIABLE and r.target().browseName() == 'InputArguments':
          while r.target() in unprintedNodes:
            unprintedNodes.remove(r.target())
	  if r.target().value() != None:
	    inArgVal = r.target().value().value
	elif r.target() != None and r.target().nodeClass() == NODE_CLASS_VARIABLE and r.target().browseName() == 'OutputArguments':
	  while r.target() in unprintedNodes:
            unprintedNodes.remove(r.target())
	  if r.target().value() != None:
	    outArgVal = r.target().value().value
      if len(inArgVal)>0:
	code.append("")
	code.append("inputArguments = (UA_Argument *) malloc(sizeof(UA_Argument) * " + str(len(inArgVal)) + ");")
	code.append("int inputArgumentCnt;")
	code.append("for (inputArgumentCnt=0; inputArgumentCnt<" + str(len(inArgVal)) + "; inputArgumentCnt++) UA_Argument_init(&inputArguments[inputArgumentCnt]); ")
	argumentCnt = 0
	for inArg in inArgVal:
	  if inArg.getValueFieldByAlias("Description") != None:
	    code.append("inputArguments[" + str(argumentCnt) + "].description = UA_LOCALIZEDTEXT(\"" + str(inArg.getValueFieldByAlias("Description")[0]) + "\",\"" + str(inArg.getValueFieldByAlias("Description")[1]) + "\");")
	  if inArg.getValueFieldByAlias("Name") != None:
	    code.append("inputArguments[" + str(argumentCnt) + "].name = UA_STRING(\"" + str(inArg.getValueFieldByAlias("Name")) + "\");")
	  if inArg.getValueFieldByAlias("ValueRank") != None:
	    code.append("inputArguments[" + str(argumentCnt) + "].valueRank = " + str(inArg.getValueFieldByAlias("ValueRank")) + ";")
	  if inArg.getValueFieldByAlias("DataType") != None:
	    code.append("inputArguments[" + str(argumentCnt) + "].dataType = " + str(self.getCreateNodeIDMacro(inArg.getValueFieldByAlias("DataType"))) + ";")
	  #if inArg.getValueFieldByAlias("ArrayDimensions") != None:
	  #  code.append("inputArguments[" + str(argumentCnt) + "].arrayDimensions = " + str(inArg.getValueFieldByAlias("ArrayDimensions")) + ";")
	  argumentCnt += 1
      if len(outArgVal)>0:
	code.append("")
	code.append("outputArguments = (UA_Argument *) malloc(sizeof(UA_Argument) * " + str(len(outArgVal)) + ");")
	code.append("int outputArgumentCnt;")
	code.append("for (outputArgumentCnt=0; outputArgumentCnt<" + str(len(outArgVal)) + "; outputArgumentCnt++) UA_Argument_init(&outputArguments[outputArgumentCnt]); ")
	argumentCnt = 0
	for outArg in outArgVal:
	  if outArg.getValueFieldByAlias("Description") != None:
	    code.append("outputArguments[" + str(argumentCnt) + "].description = UA_LOCALIZEDTEXT(\"" + str(outArg.getValueFieldByAlias("Description")[0]) + "\",\"" + str(outArg.getValueFieldByAlias("Description")[1]) + "\");")
	  if outArg.getValueFieldByAlias("Name") != None:
	    code.append("outputArguments[" + str(argumentCnt) + "].name = UA_STRING(\"" + str(outArg.getValueFieldByAlias("Name")) + "\");")
	  if outArg.getValueFieldByAlias("ValueRank") != None:
	    code.append("outputArguments[" + str(argumentCnt) + "].valueRank = " + str(outArg.getValueFieldByAlias("ValueRank")) + ";")
	  if outArg.getValueFieldByAlias("DataType") != None:
	    code.append("outputArguments[" + str(argumentCnt) + "].dataType = " + str(self.getCreateNodeIDMacro(outArg.getValueFieldByAlias("DataType"))) + ";")
	  #if outArg.getValueFieldByAlias("ArrayDimensions") != None:
	  #  code.append("outputArguments[" + str(argumentCnt) + "].arrayDimensions = " + str(outArg.getValueFieldByAlias("ArrayDimensions")) + ";")
	  argumentCnt += 1

    # print the attributes struct
    code.append("UA_%sAttributes attr;" % nodetype)
    code.append("UA_%sAttributes_init(&attr);" %  nodetype);
    code.append("attr.displayName = UA_LOCALIZEDTEXT(\"\", \"" + str(node.displayName()) + "\");")
    code.append("attr.description = UA_LOCALIZEDTEXT(\"\", \"" + str(node.description()) + "\");")

    if nodetype in ["Variable", "VariableType"]:
      code = code + node.printOpen62541CCode_SubtypeEarly(bootstrapping = False)
    elif nodetype == "Method":
      if node.executable():
	code.append("attr.executable = true;")
      if node.userExecutable():
	code.append("attr.userExecutable = true;")

    code.append("UA_NodeId nodeId = " + str(self.getCreateNodeIDMacro(node)) + ";")
    if nodetype in ["Object", "Variable"]:
      code.append("UA_NodeId typeDefinition = UA_NODEID_NULL;") # todo instantiation of object and variable types
    code.append("UA_NodeId parentNodeId = " + str(self.getCreateNodeIDMacro(parentNode)) + ";")
    code.append("UA_NodeId parentReferenceNodeId = " + str(self.getCreateNodeIDMacro(parentReference.referenceType())) + ";")
    extrNs = node.browseName().split(":")
    if len(extrNs) > 1:
      code.append("UA_QualifiedName nodeName = UA_QUALIFIEDNAME(" +  str(extrNs[0]) + ", \"" + extrNs[1] + "\");")
    else:
      code.append("UA_QualifiedName nodeName = UA_QUALIFIEDNAME(0, \"" + str(node.browseName()) + "\");")

    # In case of a MethodNode: Add in|outArg struct generation here. Mandates that namespace reordering was done using
    # Djikstra (check that arguments have not been printed). (@ichrispa)
    code.append("UA_Server_add%sNode(server, nodeId, parentNodeId, parentReferenceNodeId, nodeName" % nodetype)

    if nodetype in ["Object", "Variable"]:
      code.append("       , typeDefinition")
    if nodetype != "Method":
      code.append("       , attr, NULL, NULL);")
    else:
      code.append("       , attr, (UA_MethodCallback) NULL, NULL, " + str(len(inArgVal)) + ", inputArguments,  " + str(len(outArgVal)) + ", outputArguments, NULL);")
    return code

  def getCreateNodeBootstrap(self, node):
    nodetype = ""
    code = []

    code.append("// Node: " + str(node) + ", " + str(node.browseName()))

    if node.nodeClass() == NODE_CLASS_OBJECT:
      nodetype = "Object"
    elif node.nodeClass() == NODE_CLASS_VARIABLE:
      nodetype = "Variable"
    elif node.nodeClass() == NODE_CLASS_METHOD:
      nodetype = "Method"
    elif node.nodeClass() == NODE_CLASS_OBJECTTYPE:
      nodetype = "ObjectType"
    elif node.nodeClass() == NODE_CLASS_REFERENCETYPE:
      nodetype = "ReferenceType"
    elif node.nodeClass() == NODE_CLASS_VARIABLETYPE:
      nodetype = "VariableType"
    elif node.nodeClass() == NODE_CLASS_DATATYPE:
      nodetype = "DataType"
    elif node.nodeClass() == NODE_CLASS_VIEW:
      nodetype = "View"
    else:
      code.append("/* undefined nodeclass */")
      return;

    code.append("UA_" + nodetype + "Node *" + node.getCodePrintableID() + " = UA_NodeStore_new" + nodetype + "Node();")
    if not "browsename" in self.supressGenerationOfAttribute:
      extrNs = node.browseName().split(":")
      if len(extrNs) > 1:
        code.append(node.getCodePrintableID() + "->browseName = UA_QUALIFIEDNAME_ALLOC(" +  str(extrNs[0]) + ", \"" + extrNs[1] + "\");")
      else:
        code.append(node.getCodePrintableID() + "->browseName = UA_QUALIFIEDNAME_ALLOC(0, \"" + node.browseName() + "\");")
    if not "displayname" in self.supressGenerationOfAttribute:
      code.append(node.getCodePrintableID() + "->displayName = UA_LOCALIZEDTEXT_ALLOC(\"en_US\", \"" +  node.displayName() + "\");")
    if not "description" in self.supressGenerationOfAttribute:
      code.append(node.getCodePrintableID() + "->description = UA_LOCALIZEDTEXT_ALLOC(\"en_US\", \"" +  node.description() + "\");")

    if not "writemask" in self.supressGenerationOfAttribute:
        if node.__node_writeMask__ != 0:
          code.append(node.getCodePrintableID() + "->writeMask = (UA_Int32) " +  str(node.__node_writeMask__) + ";")
    if not "userwritemask" in self.supressGenerationOfAttribute:
        if node.__node_userWriteMask__ != 0:
          code.append(node.getCodePrintableID() + "->userWriteMask = (UA_Int32) " + str(node.__node_userWriteMask__) + ";")
    if not "nodeid" in self.supressGenerationOfAttribute:
      if node.id().ns != 0:
        code.append(node.getCodePrintableID() + "->nodeId.namespaceIndex = " + str(node.id().ns) + ";")
      if node.id().i != None:
        code.append(node.getCodePrintableID() + "->nodeId.identifier.numeric = " + str(node.id().i) + ";")
      elif node.id().b != None:
        code.append(node.getCodePrintableID() + "->nodeId.identifierType = UA_NODEIDTYPE_BYTESTRING;")
        log(self, "ByteString IDs for nodes has not been implemented yet.", LOG_LEVEL_ERROR)
        return []
      elif node.id().g != None:
        #<jpfr> the string is sth like { .length = 111, .data = <ptr> }
        #<jpfr> there you _may_ alloc the <ptr> on the heap
        #<jpfr> for the guid, just set it to {.data1 = 111, .data2 = 2222, ....
        code.append(node.getCodePrintableID() + "->nodeId.identifierType = UA_NODEIDTYPE_GUID;")
        log(self, "GUIDs for nodes has not been implemented yet.", LOG_LEVEL_ERROR)
        return []
      elif node.id().s != None:
        code.append(node.getCodePrintableID() + "->nodeId.identifierType = UA_NODEIDTYPE_STRING;")
        code.append(node.getCodePrintableID() + "->nodeId.identifier.numeric = UA_STRING_ALLOC(\"" + str(node.id().i) + "\");")
      else:
        log(self, "Node ID is not numeric, bytestring, guid or string. I do not know how to create c code for that...", LOG_LEVEL_ERROR)
        return []

    return code
