FP 2021-11-23

#UDT = User Defined Types
class Contact:
    #static
    SEPARATOR = "\n" + "_.~^~."*10

    #data members / attributes / properties
    #dynamic
    def __init__(
        self,
        pName,
        pTel,
        pEmail,
        pWeb
    ):
        self.mName = pName
        self.mTel = pTel
        self.mEmail = pEmail
        self.mWeb = pWeb
    #def __init__

    # dynamic
    def hyperlinkForWebAddress(self):
        strHyperlink = "<a href='%s'>%s</a>"%(self.mWeb, self.mWeb)
        return strHyperlink
    #def hyperlinkForWebAddress

    #behaviors
    #there are special methods
    #the "dunder" methods
    #dunder = double underscore
    #represents every instance of the class as a string
    # dynamic
    def __str__(self):
        strFormat = "Name: %s\nTel: %s\ne-mail: %s\n@web: %s%s"\
        %(
            self.mName,
            self.mTel,
            self.mEmail,
            #self.mWeb,
            self.hyperlinkForWebAddress(),
            Contact.SEPARATOR
        )

        strFormatAlt = \
        "Name: {}\nTel: {}\ne-mail: {}\n@web: {}{}"\
        .format(self.mName, self.mTel, self.mEmail, self.mWeb, \
                Contact.SEPARATOR)

        #return strFormatAlt
        return strFormat
    #def __str__

    #__repr__ AKA "representation" is used, for example, by list
    def __repr__(self):
        return self.__str__()

    #teach Python how to relate any 2 instances of Contact
    #explains the relational operator < "less than"
    def __lt__(self, other):
        return self.mTel<other.mTel

    #explains the relational operator == "equal to"
    def __eq__(self, other):
        return self.mTel==other.mTel

    #explains the relational operator > "greater than"
    def __gt__(self, other):
        return self.mTel>other.mTel

    def toTSVFile(self, pStrFileName):
        fw = open(pStrFileName, "at") #append text
        #fw.write(self.__str__()) #WRONG, TPC => TSV
        fw.write(self.toTSV()) #CORRECT!
        fw.close()
    #def toTSVFile
#class Contact

#instanciação
cMaria = Contact("Maria", "123", "maria@gmail.com", "no address")
cArt = Contact("Art", "321", "art@gmail.com", "http://art.net")

#print (cMaria) #thanks to __str__
#print (cArt) #thanks to __str__

listContacts = [cMaria, cArt] #list of Contact
#list2 = [cMaria.mName, cArt.mName] #list of string #No No No
print ("Before sorting:")
print (listContacts)

#sorting attempt
listContacts.sort()

print ("After sorting:")
print (listContacts)

cMaria.toTSVFile("contactos.tsv")
cArt.toTSVFile("contactos.tsv")