#!/usr/bin/env python3

import sys
import difflib
import pprint
import os

S8A = os.path.join(sys.argv[1], 's8a')
S8B = os.path.join(sys.argv[1], 's8b')

assert os.path.exists(S8A), S8A
assert os.path.exists(S8B), S8B

s8a_files = list(sorted(os.listdir(S8A)))
s8b_files = list(sorted(os.listdir(S8B)))

toremove = []
for f in s8b_files:
    if f not in s8a_files:
        continue

    if not f.endswith('.cor') and not f.endswith('.all'):
        if ".cor" not in f and ".all" not in f:
            print("Found in both:", f)
        continue

    af = os.path.join(S8A, f)
    bf = os.path.join(S8B, f)

    ac = open(af).readlines()
    bc = open(bf).readlines()

    adds = []
    minus = []
    for l in list(difflib.unified_diff(ac, bc))[2:]:
        if l[1] in ('*',):
            continue
        if l[0] in (' ','@'):
            continue
        if l[0] == '-':
            minus.append(l[1:])
        elif l[0] == '+':
            adds.append(l[1:])

    assert not adds, (af, adds)
    for m in minus:
        if f.endswith('.all') and m.endswith('=0\n'):
            continue
        assert m.startswith('.include'), (af, m)
    toremove.append(f)

print()
print("Will remove")
print("-"*75)
pprint.pprint(toremove)
print("-"*75)
print()

for fprefix in toremove:
    for f in s8b_files:
        if f.startswith(fprefix):
            bf = os.path.join(S8B, f)
            print("Removing", bf)
            os.unlink(bf)