import models
import item.models
import user.models
import archive.models

def recover_item(id):
    if item.models.Item.objects.filter(public_id=id).exists():
        raise Exception('id is taken')
    qs = models.Changelog.objects.filter(value__contains='id": "%s"' % id)
    if not qs.exists():
        raise Exception('id not found')
    old = qs.order_by('-created')[0]
    i = item.models.Item()
    i.public_id = id
    i.data = old.value
    created = old.value['created']
    i.user = user.models.User.objects.get(username=i.data['user'])
    for key in [
        'rendered',
        'random',
        'cuts',
        'duration',
        'id',
        'size',
        'posterFrame',
        'parts',
        'cutsperminute',
        'hue', 
        'numberofcuts',
        'durations',
        'volume',
        'user',
        'words',
        'videoRatio',
        'aspectratio',
        'bitrate',
        'pixels',
        'created',
        'numberoffiles',
        'modified',
        'timesaccessed',
        'accessed',
        'resolution',
        'wordsperminute',
        'posterRatio'
    ]:
        if key in i.data:
            del i.data[key]
    i.save()
    i.public_id = id
    i.created = created
    i.save()
    i.update_sort()
    i.update_find()
    print('created', i, i.id)

    for a in models.Changelog.objects.filter(value__contains='id": "%s/' % id).order_by('created'):
        qs = i.annotations.filter(public_id=a.value['id'])
        if qs.exists():
            annot = qs[0]
        else:
            annot = item.models.Annotation()
            annot.item = i
            annot.public_id = a.value['id']
        annot.created = a.value['created']
        annot.modified = a.value['modified']
        annot.user = user.models.User.objects.get(username=a.value['user'])
        annot.start = a.value['in']
        annot.end = a.value['out']
        annot.value = a.value['value']
        annot.layer = a.value.get('layer', 'transcripts')
        annot.save()
    return i

def recover_file(id, oshash, filename):
    i = item.models.Item.objects.get(public_id=id)
    file, created = archive.models.File.objects.get_or_create(oshash=oshash)
    if created:
        file.item = i
        file.path = filename
        file.wanted = True
        file.selected = True
        extension = file.path.split('.')
        if len(extension) > 1:
            extension = extension[-1]
        else:
            extension = 'webm'
        file.info['extension'] = extension.lower()
        file.save()
    else:
        raise Exception('file exists', oshash)
    return file