import json
import csv
# annotation dataset pwd : /scratch/junhyeok/ego4d_dataset/v2/annotations/ av_train.json, av_val.json

# JH : To split uid list in clip
def desc_annotation(ann_split):

    print('Number of Videos: {}'.format(len(ann_split['videos'])))
    clip_uid_list_in_split = []
    for video in ann_split['videos']:
        for clip in video['clips']:
            clip_uid_list_in_split.append(clip['clip_uid'])
    
    return clip_uid_list_in_split

# JH : To save uids to csv
def write_uid_csv(filename, clip_uid_list):
    with open(filename,'w', newline='') as file:
        write = csv.writer(file)
        write.writerow(clip_uid_list)

# Load AV
av_train_annotation_path =  '/scratch/junhyeok/ego4d_dataset/v2/annotations/av_train.json'
output_path = 'av_train_uids.csv'

with open(av_train_annotation_path, "r") as f:
    av_annotations = json.load(f)

train_clip_uid_list = desc_annotation(av_annotations)
        
write_uid_csv(output_path , train_clip_uid_list)
print('DONE!')