#!/usr/bin/python3
import os
import json
import ox
import ox.web.auth

base_url = 'https://0xdb.org'
credentials = ox.web.auth.get('0xdb.org')
prefix = '/Cinema'

if os.path.exists('files.json'):
    files = json.load(open('files.json'))
else:
    files = {}

def get_info(api, oshash):
    if oshash not in files:
        r = api.findMedia({
            'query': {
                'conditions': [{'key': 'oshash', 'value': oshash}]
            },
            'keys': ['id', 'instances', 'resolution']
        })['data']
        files[oshash] = {
            'path': r['items'][0]['instances'][0]['path'],
            'resolution': r['items'][0]['resolution']
        }
    return files[oshash]

def sort_clips(clips, sort):
    reverse = sort.startswith('-')
    last = '' if reverse else 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'
    sort = sort.lstrip('-')
    s = sorted(clips, key=lambda c: (str(c.get(sort, last)), c['in'], c['out']))
    if reverse:
        s = reversed(s)
    return s


if __name__ == '__main__':
    import sys
    edit_id = sys.argv[1]

    api = ox.API(base_url + '/api/')
    api.signin(**credentials)
    edit = api.getEdit(id=edit_id)['data']
    with open('%s_info.json' % edit_id, 'w') as fd:
        json.dump(edit, fd, indent=4, ensure_ascii=False)

    videos = []
    subtitles = []
    position = 0
    for clip in sort_clips(edit['clips'], 'year'):

        part_pos = 0
        for i, duration in enumerate(clip['durations']):
            if part_pos + duration < clip['in']:
                part_pos += duration
            elif part_pos <= clip['in']:
                stream_in = clip['in'] - part_pos
                stream_out = min(clip['out'] - part_pos, duration)
                part_pos += duration
                info = get_info(api, clip['streams'][i])
                videos.append({
                    'oshash': clip['streams'][i],
                    'path': os.path.join(prefix, info['path']),
                    'resolution': info['resolution'],
                    'in': stream_in,
                    'out': stream_out
                })
            elif clip['out'] > part_pos:
                stream_in = part_pos
                stream_out = min(clip['out'] - part_pos, duration)
                part_pos += duration
                info = get_info(api, clip['streams'][i])
                videos.append({
                    'oshash': clip['streams'][i],
                    'path': info['path'],
                    'resolution': info['resolution'],
                    'in': stream_in,
                    'out': stream_out
                })

        for sub in clip['layers']['subtitles']:
            subtitles.append({
                'in': sub['in'] + position,
                'out': sub['out'] + position,
                'value': sub['value'],
            })

        position += clip['duration']

    with open('%s.srt' % edit_id, 'wb') as fd:
        fd.write(ox.srt.encode(subtitles))
    with open('%s.json' % edit_id, 'w') as fd:
        json.dump(videos, fd, indent=4, ensure_ascii=False)

    with open('files.json', 'w') as fd:
        json.dump(files, fd, indent=4, ensure_ascii=False)