#!/usr/bin/python

import optparse
import logging
import os
import sys
import time
from xml.etree import ElementTree

progname = os.path.basename(sys.argv[0])
version = "0.1"

parser = optparse.OptionParser(usage="%prog input")
logging.basicConfig(level=logging.INFO,
                    format=progname + ": %(levelname)s: %(message)s")
parser.add_option("-i", "--ignore-stripped", 
                  action="store_true", 
                  dest="ignore_stripped", 
                  help="ignore the stripped ids")

(options, args) = parser.parse_args()

class FatalError(Exception):
    pass

def error(msg):
    logging.error(msg)
    raise FatalError

stripped_ids = {}

from_type_to_icon = {
"creditcard": 9,
"cryptokey": 29,
"door": 52,
"folder": 48,
"generic": 0,
"phone": 68,
"website": 1 
}

try:
    if len(args) != 1:
        error("requires one argument")

    old_filename = args[0]

    old_doc = ElementTree.ElementTree(file=old_filename)
    old_root = old_doc.getroot()
    new_root = ElementTree.Element("database")
    new_doc = ElementTree.ElementTree(new_root)

    def parse_folder(old_element, new_parent, group_depth):
        description = None
        desc_append = ""
        for item in old_element.findall("*"):
            if item.tag == "entry":
                if item.get("type") == "folder":
                    element = ElementTree.SubElement(new_parent, "group")
                    ElementTree.SubElement(element, "icon").text = "48"
                    element.tail = "\n"
                    parse_folder(item, element, group_depth + 1)
                else:
                    if group_depth == 0:
                        fake_group = ElementTree.SubElement(new_parent, "group")
                        ElementTree.SubElement(fake_group, "icon").text = "48"
                        ElementTree.SubElement(fake_group, "title").text = "Misc"                        
                        fake_group.tail = "\n"
                        new_parent = fake_group
                        group_depth += 1

                    element = ElementTree.SubElement(new_parent, "entry")
                    ElementTree.SubElement(element, "icon").text = str(from_type_to_icon[item.get("type")])
                    element.tail = "\n"
                    parse_folder(item, element, group_depth)
            else:
                element = new_parent
                if item.tag == "name":
                    ElementTree.SubElement(element, "title").text = item.text
                elif item.tag == "updated":
                    lastmod_time = time.strftime("%Y-%m-%dT%H:%M:%S", 
                                                 time.localtime(int(item.text)))
                    ElementTree.SubElement(element, "lastmod").text = lastmod_time
                    ElementTree.SubElement(element, "lastaccess").text = lastmod_time
                    ElementTree.SubElement(element, "creation").text = lastmod_time
                elif item.tag == "field":
                    id = item.get("id")
                    if id == "generic-username":
                        ElementTree.SubElement(element, "username").text = item.text
                    elif id == "generic-password":
                        ElementTree.SubElement(element, "password").text = item.text
                    elif id in ("generic-hostname", "generic-url"):
                        ElementTree.SubElement(element, "url").text = item.text
                    elif id == "creditcard-cardnumber":
                        desc_append += "Card Number: " + item.text + "\n"
                    elif id == "creditcard-expirydate":
                        desc_append += "Card Expiry: " + item.text + "\n"
                    elif id == "creditcard-ccv":
                        desc_append += "Card CCV: " + item.text + "\n"
                    elif id == "generic-pin":
                        if item.text is not None:
                            desc_append += "PIN: " + item.text + "\n"
                    elif id == "phone-phonenumber":
                        ElementTree.SubElement(element, "password").text = item.text                        
                    elif id == "generic-code":
                        ElementTree.SubElement(element, "password").text = item.text
                    elif id in ("creditcard-cardtype", "generic-location", "generic-certificate", "generic-keyfile"):
                        stripped_ids[id] = 1
                    else:
                        error("unexpected field id: " + id)
                elif item.tag == "description":
                    description = item.text
                else:
                    error("unexpected tag: " + item.tag)
        if description is not None or len(desc_append) > 0:
            if len(desc_append) == 0:
                ElementTree.SubElement(element, "comment").text = description
            elif description is None:
                ElementTree.SubElement(element, "comment").text = desc_append
            else:
                ElementTree.SubElement(element, "comment").text = description + "\n" + desc_append
                
            
    parse_folder(old_root, new_root, 0)

    if len(stripped_ids) and not options.ignore_stripped:
        error("stripped following ids: " + ", ".join(stripped_ids.keys()))

    sys.stdout.write("<!DOCTYPE KEEPASSX_DATABASE>\n")
    new_doc.write(sys.stdout)
except FatalError:
    pass