"""Jobs a ejecutar en el fondo"""
import logging
import json

import django_rq
from django.core.cache import cache

from fetcher import musicbrainz as mb

_log = logging.getLogger('fetcher_jobs')
_log.addHandler(logging.NullHandler())


@django_rq.job
def load_entities_of_recording(recording):
    """Carga en cache una grabacion y sus entidades relacionadas"""
    mbid = recording
    if isinstance(recording, dict):
        mbid = recording.get('id')

    if cache.ttl(f'recording_{mbid}') is None:
        _log.info('La recording ya se habia procesado anteriormente')
        return

    if isinstance(recording, str):
        recording = mb.get_recording_by_mbid(mbid)

    cache.set(f'recording_{mbid}', json.dumps(recording), timeout=None)
    _log.info('Recording %s fue almacenada correctamente', mbid)


@django_rq.job
def load_entities_of_release(release):
    """Carga en cache una release y sus entidades relacionadas"""
    mbid = release
    if isinstance(release, dict):
        mbid = release.get('id')

    if cache.ttl(f'release_{mbid}') is None:
        _log.info('La release ya se habia procesado anteriormente')
        return

    if isinstance(release, str):
        release = mb.get_release_by_mbid(mbid)

    cache.set(f'release_{mbid}', json.dumps(release), timeout=None)
    _log.info('Release %s fue almacenada en cache', mbid)

    cover_art = mb.get_release_cover_art(mbid)
    cache.set(f'release_cover_art_{mbid}', json.dumps(cover_art), timeout=None)
    _log.info('Cover art de release %s almacenada en cache', mbid)

    offset = 0
    while True:
        recordings = mb.browse_recordings({'release': mbid}, limit=100, offset=offset)
        for recording in recordings.get('recordings'):
            load_entities_of_recording(recording)

        offset += 100
        if offset > recordings.get('recording_count', 0):
            break


@django_rq.job
def load_entities_of_release_group(release_group):
    """Carga en cache un release group y sus entidades relacionadas"""
    mbid = release_group
    if isinstance(release_group, dict):
        mbid = release_group.get('id')

    if cache.ttl(f'release_group_{mbid}') is None:
        _log.info('La release group ya se habia procesado anteriormente')
        return

    if isinstance(release_group, str):
        release_group = mb.get_release_group_by_mbid(mbid)

    cache.set(f'release_group_{mbid}', json.dumps(release_group), timeout=None)
    _log.info('Release Group %s almacenado en cache', mbid)

    cover_art = mb.get_release_group_cover_art(mbid)
    cache.set(f'release_group_cover_art_{mbid}', json.dumps(cover_art), timeout=None)
    _log.info('Cover art de release group %s almacenada en cache', mbid)

    offset = 0
    while True:
        releases = mb.browse_releases({'release-group': mbid}, limit=100, offset=offset)
        for release in releases.get('releases'):
            load_entities_of_release(release)

        offset += 100
        if offset > releases.get('release_count', 0):
            break


@django_rq.job
def load_artist_on_cache(artist):
    """Carga en cache a un artista y todas sus entidades"""
    mbid = artist
    if isinstance(artist, dict):
        mbid = artist.get('id')

    if cache.ttl(f'artist_{mbid}') is None:
        _log.info('El artista ya se había procesado anteriormente')
        return

    if isinstance(artist, str):
        artist = mb.get_artist_by_mbid(mbid, includes=['tags'])

    cache.set(f'artist_{mbid}', json.dumps(artist), timeout=None)
    _log.info('Artista %s almacenado en cache', mbid)

    offset = 0
    while True:
        release_groups = mb.browse_release_groups({'artist': mbid}, limit=100, offset=offset)
        for release_group in release_groups.get('release_groups'):
            load_entities_of_release_group.delay(release_group)

        offset += 100
        if offset > release_groups.get('release_group_count', 0):
            break