#!/usr/bin/env python

import base64
import json
import os
import pickle
import sys
import html2text
import traceback
import time

from zammad_py import ZammadAPI
from zammad_py.api import Resource, TagList, TicketArticle

TEMPLATE = """{
"zammad_url": "",
"zammad_user": "",
"zammad_password": "",
"rt_url": "",
"rt_user": "",
"rt_pass": "",
"rt_start": 1,
"rt_end": 1000,
}
"""


STATUSMAP = {"new": 1, "open": 2, "resolved": 4, "rejected": 4, "deleted": 4}
USERMAP = {}

ZAMMAD_SESSIONS = {}

### helpers ###

def get_zammad_session(impersonated_user=None):
    if impersonated_user in ZAMMAD_SESSIONS:
        return ZAMMAD_SESSIONS[impersonated_user]
    else:
        kwargs = {}
        if impersonated_user:
            kwargs["on_behalf_of"] = impersonated_user
        session = ZammadAPI(
            url=config["zammad_host"],
            username=config["zammad_user"],
            password=config["zammad_password"],
            **kwargs,
        )
        ZAMMAD_SESSIONS[impersonated_user or config["zammad_user"]] = session

        return session

def remove_tickets_for(rt_id, zammad, retries=0):
    try:
        matching_zammad_tickets= zammad.ticket.search(f"title: \"\[RT-{rt_id}\]*\"")
        #matching_zammad_tickets= zammad.ticket.search('number:16014')
        #print(matching_zammad_tickets[0])
        matching_zammad_ids = []
        if len(matching_zammad_tickets) >= 1:
            print(f"Found ticket:")
            for zt in matching_zammad_tickets:
                #print(f"{zt["rt_id"]} {zt["title"]}")
                matching_zammad_ids.append(zt["id"])

        if len(matching_zammad_ids) >= 1:
            matching_zammad_ids.sort()
            #matching_zammad_ids.pop()
            for zt_id in matching_zammad_ids:
                print(f"Deleting Zammad ticket {zt_id}")
                zammad.ticket.destroy(zt_id)

    except:
        print(f"Failed to process RT-{rt_id} .. ({retries} retries left)")
        if retries > 0:
            print("Sleeping 5 seconds to give Zammad some air...")
            time.sleep(5)
            remove_tickets_for(id, retries - 1)
        else:
             traceback.print_exc()
             raise RuntimeError

### main logic ###

if not os.path.exists("rt2zammad.json"):
    print("Missing rt2zammad.json!")
    print("Create one based on following template:")
    print(TEMPLATE)
    sys.exit(1)

with open("rt2zammad.json") as handle:
    config = json.load(handle)

if len(sys.argv) != 3:
   print(len(sys.argv))
   print("It needs ticket range to import ex. start, end")
   sys.exit()
else:
   import_start = int(sys.argv[1])
   import_end = int(sys.argv[2])
   print(f"start : {import_start} end : {import_end}")

h2t = html2text.HTML2Text()
zammad = get_zammad_session()

os.makedirs("tickets", exist_ok=True)


ticket_ids = os.listdir("tickets/")
print(f"Found {len(ticket_ids)} tickets on filesystem.")
ticket_ids = list(map(int, ticket_ids))
ticket_ids.sort()
ticket_ids = list(map(int, ticket_ids[import_start-1:import_end]))

for id in ticket_ids:
    print(f"Processing RT-{id}...")
    remove_tickets_for(id, zammad)