#!/usr/bin/env python3
import sys
import requests
import csv
from collections import OrderedDict
from io import StringIO
from hashlib import md5
import os

from common import *

# mapping of member levels to schedules
memberLevels = {"CMS Staff": "7x24",
                "CMS Weekends Only": "Weekends Only",
                "CMS Weekdays Only": "Weekdays Only",
                "CMS Unlimited": "Unlimited",
                "CMS Nights & Weekends": "Nights and Weekends"}

def makeMember(member, doorAuth):
    """Create an output CSV row for the member"""
    if member["Access Card Number"] == "":
        #print(member["First Name"], member["Last Name"], " has no card number, ignoring")
        return

    out = {"Forename": member["First Name"],
           "Surname": member["Last Name"],
           "Initial": "",
           "CardNumber": member["Access Card Number"],
           "CardFormat": "A901146A-" + member["Access Card Facility Code"],
           "PinRequired": "0",
           "ExtendedAccess": "0",
           "ExpiryDate": "",
           "Email": member["Email"],
           "Phone": member["Phone"]}

    if member[doorAuth] == "Y" \
       and not member["Account on Hold"] == "Account on Hold":
        levels = OrderedDict(sorted([(k, v) for k, v in memberLevels.items() if member[k] == k]))
        out["Custom1"] = "|".join(levels.keys()).replace("&", "and")
        for index, schedule in enumerate(levels.values(), 1):
            #TODO: error if people have more than 8?
            out["Schedule" + str(index)] = schedule

    return out

def makeDoor(doorName, doorData, members, hashes):
    """Create a CSV for the given door"""
    outString = StringIO()
    writer = csv.DictWriter(outString, fieldnames)
    writer.writeheader()
    for member in members:
        member = makeMember(member, "Access " + doorData["access"] + "?")
        if member is not None:
            writer.writerow(member)

    import datetime as DT
    timestamp = DT.datetime.now().strftime("%Y-%m-%d %H:%M:%S")
    with open("/tmp/" + doorName + timestamp + ".csv", "w") as f:
        f.write(outString.getvalue())

    outString.seek(0)
    doorHash = md5(bytes(outString.getvalue(), 'utf8')).hexdigest()
    if doorHash == hashes.get(doorName):
        print("Door", doorName, "not changed, not updating")
    else:
        print("Door", doorName, "changed, trying to update")
        hashes[doorName] = doorHash
        doCSVImport(doorData["ip"], outString)
        # write out hash if we sucessfully updated this door
        with open('/tmp/doorUpdaterLastHash', 'w') as f:
            json.dump(hashes, f)

def main():
    members = getMembershipworksData(
        "lvl,xws,xms,xsc,xas,xfd,xac,phn,eml,lbl,xcf,nam")
    members.sort(key=lambda x: x['Last Name'])

    if os.path.exists('/tmp/doorUpdaterLastHash'):
        with open('/tmp/doorUpdaterLastHash', 'r') as f:
            hashes = json.load(f)
    else:
        hashes = {}

    for doorName, doorData in config["doors"].items():
        print(doorName, doorData)
        makeDoor(doorName, doorData, members, hashes)

if __name__ == '__main__':
    main()