import os
import re

def resolve_roman(s):
    extra = re.compile(r'^\d+(.*?)$').findall(s)
    if extra:
        extra = extra[0].lower()
        new = {
            'i': '1', 'ii': '2', 'iii': '3', 'iv': '4', 'v': '5',
            'vi': '6', 'vii': 7, 'viii': '8', 'ix': '9', 'x': '10'
        }.get(extra, extra)
        return s.replace(extra, new)
    return s

def upgrade_originals():
    import item.models
    import itemlist.models
    nt = itemlist.models.List.objects.get(name='No Type')
    no = itemlist.models.List.objects.get(name='New Originals')
    for i in nt.get_items(nt.user):
        orig = item.models.Item.objects.get(data__title=i.get('title'), data__type=["Original"])
        print(i, orig)
        orig.files.all().update(selected=False)
        i.files.all().update(item=orig)
        orig.save()
        orig.remove_poster()
        orig.make_poster()
        i.data['type'] = ['Empty']
        i.save()
        no.items.add(orig)


def remove_deselected_files():
    import itemlist.models
    il = itemlist.models.List.objects.get(name='New Originals')
    for i in il.items.all():
        changed = False
        for f in i.files.filter(selected=False):
            f.data.delete()
            f.delete()
            changed = True
        if changed:
            i.save()

def needs_update(src, out):
    mtime_src = os.lstat(src).st_mtime
    if os.path.exists(out):
        mtime_out = os.lstat(out).st_mtime
    else:
        mtime_out = 0
    #print("compare", src, out)
    #print("ts", mtime_src, mtime_out, mtime_src > mtime_out)
    if mtime_src > mtime_out:
        return True
    return False

def write_if_new(path, data, mode=''):
    read_mode = 'r' + mode
    write_mode = 'w' + mode
    if os.path.exists(path):
        with open(path, read_mode) as fd:
            old = fd.read()
    else:
        old = ""
    is_new = data != old
    if path.endswith(".kdenlive"):
        is_new = re.sub(r'\{.{36}\}', '', data) != re.sub(r'\{.{36}\}', '', old)
    if is_new:
        with open(path, write_mode) as fd:
            fd.write(data)
    return is_new

def format_duration(duration, fps, audio=False):
    if audio:
        return float('%0.5f' % (int(duration * fps) / fps))
    else:
        return float('%0.5f' % (round(duration * fps) / fps))