#!/usr/bin/python3
import os
import json
import math
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']
        if not r['items'][0]['instances']:
            print(r)
            raise Exception('item without instance')
        files[oshash] = {
            'path': os.path.join(prefix, r['items'][0]['instances'][0]['path']),
            'resolution': r['items'][0]['resolution']
        }
    return files[oshash]

def normalize(name):
    return name.replace(':', '_').replace('/', '_')

def sort_clips(edit, sort):
    clips = edit['clips']
    reverse = sort.startswith('-')
    last = '' if reverse else 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'
    sort = sort.lstrip('-')
    if sort == 'manual':
        s = clips
        if reverse:
            s = reversed(s)
    elif sort in [
        'id', 'index', 'in', 'out', 'duration',
        'title', 'director', 'year', 'videoRatio'
    ]:
        s = sorted(clips, key=lambda c: (str(c.get(sort, last)), c['title'], c['in'], c['out']))
        if reverse:
            s = reversed(s)
    else:
        ids = api.sortClips({
            'edit': edit['id'],
            'sort': [{'key': sort, 'operator': '-' if reverse else '+'}]
        })['data']['clips']
        print(set(c['id'] for c in clips) - set(ids))
        print(set(ids) - set(c['id'] for c in clips))

        s = sorted(clips, key=lambda c: ids.index(c['id']) if c['id'] in ids else -1)
    return s


if __name__ == '__main__':
    import sys
    edit_id = sys.argv[1]
    if len(sys.argv) > 2:
        sort_by = sys.argv[2]
    else:
        sort_by = 'year'

    api = ox.API(base_url + '/api/')
    api.signin(**credentials)
    edit = api.getEdit(id=edit_id)['data']
    videos = []
    subtitles = []
    position = 0
    for clip in sort_clips(edit, sort_by):

        clip_subtitles = []
        for sub in clip['layers']['subtitles']:
            subtitles.append({
                'in': position,
                'out': position + (sub['out'] - sub['in']),
                'value': sub['value'].replace('<br/>', '\n').replace('<br>', '\n').replace('\n\n', '\n'),
            })
            clip_subtitles.append(sub['value'].replace('<br/>', '\n').replace('<br>', '\n').replace('\n\n', '\n'))

        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)

                stream_in = math.ceil(stream_in / (1/25)) * 1/25
                stream_out = math.ceil(stream_out / (1/25)) * 1/25

                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,
                    'subtitles': '\n'.join(clip_subtitles)
                })
            elif clip['out'] > part_pos:
                stream_in = part_pos
                stream_out = min(clip['out'] - part_pos, duration)
                stream_in = math.ceil(stream_in / (1/25)) * 1/25
                stream_out = math.ceil(stream_out / (1/25)) * 1/25
                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,
                    'subtitles': '\n'.join(clip_subtitles)
                })


        position += clip['duration']
        position = math.ceil(position / (1/25)) * 1/25

    name = normalize(edit_id)
    if sort_by != 'year':
        name += '_' + sort_by
    with open('%s.srt' % name, 'wb') as fd:
        fd.write(ox.srt.encode(subtitles))
    with open('%s.json' % name, '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)