# -*- coding: utf-8 -*-

import re, os, stat, time, atexit

base_excludes = ['delayed', 'outgoing', 'Trash', 'Sent', 'Queue']
full_excludes_re = ['discard', 'spool', 'spam', 'store\..+']
prioritised = ['outgoing','resubmit','drafts','inbox','phd','ul','debian','sudetia','admin','retrain']
deprioritised = ['discard','spam','store','spool']

def py_foldersort_seamus(x, y):
    for prefix in prioritised:
        if x.startswith(prefix):
            return -1
        elif y.startswith(prefix):
            return +1
    for prefix in deprioritised:
        if x.startswith(prefix):
            return +1
        elif y.startswith(prefix):
            return -1
    return cmp(x, y)

def py_nametrans_seamus(x):
    return re.sub('^INBOX', 'inbox', x)

def should_do_full_sync():
    FILE = os.path.expanduser('~/.var/offlineimap/lastrun')
    INTERVAL = 86400/6
    now = int(time.time())

    try:
        since = now - os.stat(FILE)[stat.ST_MTIME]
    except:
        since = INTERVAL + 1

    if since > INTERVAL:
        @atexit.register
        def write_trace():
            print 'Writing trace file…'
            file(FILE, 'wb').close()
        return True

    @atexit.register
    def write_sync_notice():
        print 'Partial sync complete; next full sync in %d seconds…' \
            % (INTERVAL - since)

    return False

def py_folderfilter_seamus(x):

    if x in base_excludes:
        return False

    elif re.search('^(' + '|'.join(full_excludes_re) + ')', x):
        return should_do_full_sync()

    return True

def py_folderfilter_mbnames(acct, x):
    full_excludes_re_mbnames = ['retrain/(sp|h)am'] + full_excludes_re
    return acct in ['seamus.madduck.net'] \
            and not re.search('^(' + '|'.join(full_excludes_re_mbnames) + ')', x)