import xml.dom.minidom
import time

#Helpers

def v3Indent(i):
   return i * '\t'

def getText(nodelist):
    rc = ""
    for node in nodelist:
        if node.nodeType == node.TEXT_NODE:
            rc = rc + node.data
    return rc

def getElement(Parent, Property):
    PropertyTag = Parent.getElementsByTagName(Property)[0]
    return getText(PropertyTag.childNodes)


def getItem(DomMessage, TableName, Index, ColumnName):
    Table = DomMessage.getElementsByTagName(TableName)[Index]
    ColumnTag = Table.getElementsByTagName(ColumnName)[0]
    return getText(ColumnTag.childNodes)

def getTableElement(DomMessage, TableName, Index, ColumnName):
    Table = DomMessage.getElementsByTagName(TableName)[Index]
    ColumnTag = Table.getElementsByTagName(ColumnName)[0]
    return Table, getText(ColumnTag.childNodes)

#Functions that generate the different parts of the CDA document

def BeginDocument():
   value = '<?xml version="1.0"?>\n'
   value += '<ClinicalDocument xmlns="urn:hl7-org:v3" xmlns:crs="urn:hl7-org:crs" xmlns:sch="http://www.ascc.net/xml/schematron" xmlns:mif="urn:hl7-org:v3/mif" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:hl7-org:v3 D:\edition2005\infrastructure\cda\CDA.xsd">\n'
   return value

def Header():
   value = '<!-- CDA Document Header -->\n'
   return value

def typeID():
   value = '<typeId root="2.16.840.1.113883.1.3" extension="POCD_HD000040"/>\n'
   return value

def id():
   value = '<id root="2.16.840.1.113883.19.4" extension="c266"/>\n'
   return value

def code():
   value = '<code code="11488-4" codeSystem="2.16.840.1.113883.6.1" codeSystemName="LOINC" displayName="Consultation note"/>\n'
   return value

def effectiveTime():
   value = '<effectiveTime value="20051014224411-0500"/>\n'
   return value

def confidentialityCode():
   value = '<confidentialityCode code="N" codeSystem="2.16.840.1.113883.5.25"/>\n'
   return value

def recordTarget(FirstName, LastName):
   value = '<recordTarget>\n'
   value += v3Indent(1) + '<patientRole>\n'
   value += v3Indent(2) + '<id extension="12345" root="2.16.840.1.113883.19.5"/>\n'
   value += v3Indent(2) + '<patient>\n'
   value += v3Indent(3) + '<name>\n'
   value += v3Indent(4) + '<given>' + FirstName + '</given>\n'
   value += v3Indent(4) + '<family>' + LastName + '</family>\n'
   value += v3Indent(4) + '<suffix>' + 'Senior' + '</suffix>\n'
   value += v3Indent(3) + '</name>\n'
   value += v3Indent(3) + '<administrativeGenderCode code="M" codeSystem="2.16.840.1.113883.5.1"/>\n'
   value += v3Indent(3) + '<birthTime value="19320924"/>\n'
   value += v3Indent(2) + '</patient>\n'
   value += v3Indent(2) + '<providerOrganization>\n'
   value += v3Indent(3) + '<id root="2.16.840.1.113883.19.5"/>\n'
   value += v3Indent(2) + '</providerOrganization>\n'
   value += v3Indent(1) + '</patientRole>\n'
   value += v3Indent(0) + '</recordTarget>\n'
   return value

def author():
  value = '<author>\n'
  value += v3Indent(1) + '<time value="2000040714"/>\n'
  value += v3Indent(1) + '<assignedAuthor>\n'
  value += v3Indent(2) + '<id extension="KP00017" root="2.16.840.1.113883.19.5"/>\n'
  value += v3Indent(2) + '<assignedPerson>\n'
  value += v3Indent(3) + '<name>\n'
  value += v3Indent(4) + '<given>Robert</given>\n'
  value += v3Indent(4) + '<family>Dolin</family>\n'
  value += v3Indent(4) + '<suffix>MD</suffix>\n'
  value += v3Indent(3) + '</name>\n'
  value += v3Indent(2) + '</assignedPerson>\n'
  value += v3Indent(2) + '<representedOrganization>\n'
  value += v3Indent(3) + '<id root="2.16.840.1.113883.19.5"/>\n'
  value += v3Indent(2) + '</representedOrganization>\n'
  value += v3Indent(1) + '</assignedAuthor>\n'
  value += '</author>\n'
  return value

def custodian():
   value = '<custodian>\n'
   value += v3Indent(1) + '<assignedCustodian>\n'
   value += v3Indent(2) + '<representedCustodianOrganization>\n'
   value += v3Indent(3) + '<id root="2.16.840.1.113883.19.5"/>\n'
   value += v3Indent(2) + '</representedCustodianOrganization>\n'
   value += v3Indent(1) + '</assignedCustodian>\n'
   value += '</custodian>\n'
   return value

def Body():
   value = '<!-- CDA Document Body -->\n'
   value += '<component>\n'
   value += v3Indent(1) + '<structuredBody>\n'
   value += v3Indent(2) + '<component>\n'
   value += v3Indent(3) + '<section>\n'
   value += v3Indent(4) + '<code code="10164-2" codeSystem="2.16.840.1.113883.6.1" codeSystemName="LOINC" />\n'
   value += v3Indent(4) + '<title>History of Present Illness</title>\n'
   value += v3Indent(4) + '<text>\n'
   value += v3Indent(5) + '<content styleCode="Bold">Henry Levin, the 7<sup>th</sup></content>\n'
   value += v3Indent(5) + 'is a 67 year old male referred for further asthma management.\n'
   value += v3Indent(5) + 'Onset of asthma in his <content revised="delete">twenties</content>\n'
   value += v3Indent(5) + '<content revised="insert">teens</content>.\n'
   value += v3Indent(5) + 'He was hospitalized twice last year, and already twice this year.\n'
   value += v3Indent(5) + 'He has not been able to be weaned off steroids for the past several\n'
   value += v3Indent(5) + 'He was hospitalized twice last year, and already twice this year.\n'
   value += v3Indent(5) + 'months.\n'
   value += v3Indent(4) + '</text>\n'
   value += v3Indent(3) + '</section>\n'
   value += v3Indent(2) + '</component>\n'
   value += v3Indent(1) + '</structuredBody>\n'
   value += v3Indent(0) + '</component>\n'
   return value

def EndDocument():
   value = '</ClinicalDocument>\n'
   return value


def V2toCDA(PlainDataXml):
	InMsg = xml.dom.minidom.parseString(PlainDataXml)
	v3 = BeginDocument()
	v3 += Header()
	v3 += typeID()
	v3 += id()
	v3 += code()
	v3 += effectiveTime()
	v3 += confidentialityCode()
	v3 += recordTarget(getItem(InMsg, "Patient", 0, "PatientFirstName"), getItem(InMsg, "Patient", 0, "PatientLastName"))
	v3 += author()
	v3 += custodian()
	v3 += Body()
	v3 += EndDocument()
	return v3


value = V2toCDA(value[3:])