from email.parser import BytesParser
from email.message import EmailMessage
from email.policy import default

from git import Repo

our_last_id = '<dc4d502c-bc3c-46e3-a984-41271951a5f7@mellanox.com>'
#'<20180711142744.GN3593@linux.vnet.ibm.com>'


repo = Repo('/Users/spaans/xsrc/lkml/lkml/git/6.git')


commit = repo.commit("master")
counter = 5000
froms = set()
while True:
    tree = commit.tree
    blob = tree['m']
    data = blob.data_stream.read()

    msg = BytesParser(policy=default).parsebytes(data)

    msgid = msg['Message-ID']
    from_ = msg['From']
    froms.add(from_)
    print(msgid)

    #import pdb; pdb.set_trace()
    if len(froms) > 1000:
        print("HAVE LOTS OF FRIENDS NOW")
        break
    if msgid == our_last_id:
        print("LADIES & GENTLEMEN, WE'VE GOT HIM")
        break
    parents = commit.parents
    if len(parents) != 1:
        print("WUH")
        break
    else:
        commit = commit.parents[0]

    #with open("output/%04d.eml" % counter, "bw") as f:
    #    f.write(data)
    counter -= 1

import pprint
pprint.pprint(froms)