import sys
import json


def is_blacklisted(title):
    if any(  map(lambda x: title.startswith(x),  ["Inicio", "Reconhecimento", "Intervalo", "Mudan"]) ):
        return True
    if title in ["Fim"]:
        return True
    return False

# technically incorrect, wrong fomula if we ever get to "days"
# but I'm not expecting to have a timestamp larger than a few hours
# currently youtube is limited to 12h
def to_secs(time):
    times = [ int(x) for x in reversed(time.split(':')) ]
    p = 1
    res = 0
    for t in times:
        res += t*p
        p *= 60
    return res

def diff_times(time1, time2):
    return to_secs(time2) - to_secs(time1)


splits = []

with open(sys.argv[1], 'r') as f:
    for l in f.readlines():
        s = l.split()
        splits.append( { 'starttime': s[0], 'title': ' '.join(s[1:]) })

for i in range(len(splits)-1):
    splits[i]['endtime'] = splits[i+1]['starttime']

if len(sys.argv) > 3:
    base_name = sys.argv[3]
else: # take the file name without the .mp4
    base_name = sys.argv[2][:-4]

for dog in splits:
    if is_blacklisted(dog['title']):
        continue
    fname = f'{base_name} - {dog["title"]}.mp4'
    if 'endtime' in dog:
        print ( f'ffmpeg -ss {dog["starttime"]} -i "{sys.argv[2]}"  -t {diff_times(dog["starttime"], dog["endtime"])} -c:v copy -c:a copy "{fname}"' ) 
    else:
        print ( f'ffmpeg -ss {dog["starttime"]} -i "{sys.argv[2]}"  -c:v copy -c:a copy "{fname}"' )