import os
import sys
from glob import glob
import datetime
import time
import string
import random
import subprocess

import ox

import mpv

import logging


logger = logging.getLogger('cdosea')
STATIC_ROOT = os.path.join(os.path.abspath(os.path.dirname(__file__)), 'static')


def mpv_log(loglevel, component, message):
    logger.info('[{}] {}: {}'.format(loglevel, component, message))


def get_player(fullscreen=True, font='Menlo', font_size=28):
    # 42 max
    player = mpv.MPV(
        log_handler=mpv_log, input_default_bindings=True,
        input_vo_keyboard=True, sub_text_font_size=font_size, sub_text_font=font,
    )
    #player.observe_property('time-pos', lambda pos: print('Now playing at {:.2f}s'.format(pos)))
    player.fullscreen = fullscreen
    player.loop = 'inf'
    player.loop_file = 'no'
    return player


def update_playlist(playlist, prefix, position=None, shift=True):

    files = []
    videos = {}
    if not prefix.endswith('/'):
        prefix += '/'

    if not shift:
        files.append(os.path.join(STATIC_ROOT, 'title.png'))

    for letter in string.ascii_uppercase:
        videos[letter] = glob('%s%s*.mp4' % (prefix, letter.lower()))
        random.shuffle(videos[letter])

    for i in range(10):
        for letter in string.ascii_uppercase:
            if len(videos[letter]) > i:
                files.append(videos[letter][i])
            else:
                print("warning some video files are missing %s%s%02d.mp4" % prefix, letter.lower(), i)

    if not shift:
        black = os.path.normpath(os.path.join(prefix, '..', 'black.mp4'))
        if os.path.exists(black):
            files.append(black)

    if shift:
        if position is None:
            today = datetime.date.today()
            seconds_since_midnight = time.time() - time.mktime(today.timetuple())
            offset = 0
            position = 0

            while offset < seconds_since_midnight:
                f = files.pop(0)
                try:
                    offset += ox.avinfo(f)['duration']
                    files.append(f)
                except:
                    logger.debug('WTF', exc_info=True)
                    pass
                position += 1
        else:
            pos = position
            while pos:
                f = files.pop(0)
                files.append(f)
                pos -= 1

    with open(playlist, 'w') as f:
        f.write('\n'.join(files))
        f.write('\n')
    return position, len(files)

def trigger_lights(path):
    cmd = ['python3', '-m', 'cdoseaplay.lights', path]
    subprocess.Popen(cmd)