#!/usr/bin/env python3
import json
from os import environ
import sys
import os
# krebs polling
import poll

f = 'suggestions.json'
db = poll.load_db(f)
votes = []
try:
    votes = sys.argv[1:]
except:
    print("""usage: undo number (...)
    undos vote of one or more entries based on .list""")
    sys.exit(1)
voter = environ['_prefix']
for vote in votes:
    try:
        vote = int(vote)
        del(db[vote]['votes'][voter] )
        print("undid vote by %s for #%d" %(environ['_from'],vote))
    except:
        print("undo voting for #%s failed" %vote)

poll.save_db(f,db)