#!/usr/bin/env python3

import csv
import re
import unicodedata
import sys
from xml.dom.minidom import getDOMImplementation
import copy

contacts = []


def strip_accents(text):
    """
    Strip accents from input String.

    :param text: The input string.
    :type text: String.

    :returns: The processed String.
    :rtype: String.
    """
    try:
        text = unicode(text, "utf-8")
    except (TypeError, NameError):  # unicode is a default on python 3
        pass
    text = unicodedata.normalize("NFD", text)
    text = text.encode("ascii", "ignore")
    text = text.decode("utf-8")
    return str(text)


# strip unwanted characters from strings
def clean(s):
    s = s.replace("+49", "0").replace("+", "00").strip()
    return "".join(n for n in s if n.isdigit())


# Import Contacts
with open(sys.argv[1], encoding="utf-8") as csvfile:
    records = csv.DictReader(csvfile)
    # print(records)
    noFax = re.compile(".*fax.*", re.IGNORECASE)
    for record in records:
        contact = {
            "FirstName": (
                record["Name Prefix"] + " " if len(record["Name Prefix"]) > 0 else ""
            )
            + strip_accents(record["Given Name"]),
            "LastName": strip_accents(record["Family Name"]),
            "numbers": [],
        }

        for number in range(1, 4):
            typ = "Phone {} - Type".format(number)
            val = "Phone {} - Value".format(number)
            if record[val] and not noFax.match(record[typ]):
                # Grandstream uses three types of phone numbers,
                # "Work", "Cell", "Home" WRONG - Home/Work ONLY - but
                # is superfluous
                record[typ] = 1 if record[typ] == "Home" else record[typ]
                record[typ] = 2 if record[typ] == "Main" else record[typ]
                record[typ] = 3 if record[typ] == "Other" else record[typ]
                record[typ] = 4 if record[typ] == "Work" else record[typ]
                record[typ] = 5 if record[typ] == "Mobile" else record[typ]
                record[typ] = 6 if record[typ] == "Mobil" else record[typ]

                if not record[typ]:
                    record[typ] = 1  # default to "Home"

                # Split field value - multiple numbers of the same
                # type are stuffed into a single field, sepatated
                # by ':::'
                for n in map(clean, record[val].split(":::")):
                    tmp = copy.deepcopy(contact)
                    tmp["numbers"].append(
                        {"type": "Home", "value": n, "idx": str(record[typ])}
                    )
                    contacts.append(tmp)

impl = getDOMImplementation()

xml = impl.createDocument(None, "AddressBook", None)
top_element = xml.documentElement
for contact in contacts:
    c = xml.createElement("Contact")

    # Names
    for part in ["FirstName", "LastName"]:
        if not contact[part]:
            continue

        f = xml.createElement(part)
        f.appendChild(xml.createTextNode(contact[part]))
        c.appendChild(f)

    # Numbers
    for number in contact["numbers"]:
        group = xml.createElement("Phone")
        group.setAttribute("type", number["type"])

        # phonenumber
        num = xml.createElement("phonenumber")
        num.appendChild(xml.createTextNode(number["value"]))
        group.appendChild(num)

        # accountindex
        idx = xml.createElement("accountindex")
        idx.appendChild(xml.createTextNode(number["idx"]))
        group.appendChild(idx)

        c.appendChild(group)

    top_element.appendChild(c)

print(xml.toprettyxml(encoding="UTF-8").decode())