# recalculate historical estimations
# zisco 2021-10-05 15:54

import logging
from types import ClassMethodDescriptorType
from jira import JIRA, Issue, Comment, exceptions
import re
import csv
import xlsxwriter
 
logging.basicConfig(filename='jahe.log', filemode='a', format='%(asctime)s - %(message)s', level=logging.INFO)

host = "https://jira.wien.gv.at/"
pat  = "OTAyMTM3MjY0MjE0Ovz6bu0ti1TlEdSegmmiWiJ2wGeD"

headers = JIRA.DEFAULT_OPTIONS["headers"].copy()
headers["Authorization"] = f"Bearer {pat}"
jira_server = JIRA(server=host, options={"headers": headers})
logging.info("Connection to JIRA established")

# issues_Jql = jira_server.search_issues('cf[10022] is not EMPTY AND labels not in (Refinement23092021, hotfix0921) AND status not in (Done) and key not in (wrgwr-929)', expand='changelog')
issues_Jql = jira_server.search_issues('key in (wrgwr-856, wrgwr-854, wrgwr-853)', expand='changelog')

xsp = lambda s: s or 0
sp_sum = 0
issue: Issue
for issue in issues_Jql:
    logging.info("Working on {}".format(issue.key))
    sp = 0 
    if hasattr(issue.fields, 'customfield_10022'):
        sp = xsp(issue.fields.customfield_10022)
        sp_sum += sp    

        # log old values
        print(sp, sp/8)
        originalEstimate = issue.fields.timeoriginalestimate
        logging.info("Estimation-system change: Old Story Points {} -> new Story Points {}".format(sp, sp/8))

        # probably already adapted? Search for activity 'updated the Story Points'
        doChange = True
        for history in issue.changelog.histories:
            if doChange==False:
                break
            if (history.author.key=='JIRAUSER17211'):
                for item in history.items:
                    if (item.field=='Story Points'):
                        doChange = False
                        break
                
        if doChange:
            # update story-points
            try:
                issue.update(fields={'customfield_10022': sp/8})
                comment = jira_server.add_comment(issue, "Estimation-system change: Old Story Points {} -> new Story Points {}".format(sp, sp/8))

            except exceptions.JIRAError:
                logging.error("Issue {} has no (visible) Story Points-attribute".format(issue.key))

            finally:
                print('Done {}'.format(issue.key))