from couchpotato import get_session, md5
from couchpotato.api import addApiView
from couchpotato.core.event import fireEvent, addEvent
from couchpotato.core.helpers.encoding import ss, toUnicode
from couchpotato.core.logger import CPLog
from couchpotato.core.plugins.base import Plugin
from couchpotato.core.plugins.scanner.main import Scanner
from couchpotato.core.settings.model import File, Release as Relea, Media, ReleaseInfo
from sqlalchemy.exc import InterfaceError
from sqlalchemy.orm import joinedload_all
from sqlalchemy.sql.expression import and_, or_
import os
import time
import traceback

log = CPLog(__name__)


class Release(Plugin):

    def __init__(self):
        addEvent('release.add', self.add)

        addApiView('release.download', self.download, docs = {
            'desc': 'Send a release manually to the downloaders',
            'params': {
                'id': {'type': 'id', 'desc': 'ID of the release object in release-table'}
            }
        })
        addApiView('release.delete', self.deleteView, docs = {
            'desc': 'Delete releases',
            'params': {
                'id': {'type': 'id', 'desc': 'ID of the release object in release-table'}
            }
        })
        addApiView('release.ignore', self.ignore, docs = {
            'desc': 'Toggle ignore, for bad or wrong releases',
            'params': {
                'id': {'type': 'id', 'desc': 'ID of the release object in release-table'}
            }
        })
        addApiView('release.for_movie', self.forMovieView, docs = {
            'desc': 'Returns all releases for a movie. Ordered by score(desc)',
            'params': {
                'id': {'type': 'id', 'desc': 'ID of the movie'}
            }
        })

        addEvent('release.create_from_search', self.createFromSearch)
        addEvent('release.for_movie', self.forMovie)
        addEvent('release.delete', self.delete)
        addEvent('release.clean', self.clean)
        addEvent('release.update_status', self.updateStatus)

    def add(self, group):

        db = get_session()

        identifier = '%s.%s.%s' % (group['library']['identifier'], group['meta_data'].get('audio', 'unknown'), group['meta_data']['quality']['identifier'])


        done_status, snatched_status = fireEvent('status.get', ['done', 'snatched'], single = True)

        # Add movie
        movie = db.query(Media).filter_by(library_id = group['library'].get('id')).first()
        if not movie:
            movie = Media(
                library_id = group['library'].get('id'),
                profile_id = 0,
                status_id = done_status.get('id')
            )
            db.add(movie)
            db.commit()

        # Add Release
        rel = db.query(Relea).filter(
            or_(
                Relea.identifier == identifier,
                and_(Relea.identifier.startswith(group['library']['identifier']), Relea.status_id == snatched_status.get('id'))
            )
        ).first()
        if not rel:
            rel = Relea(
                identifier = identifier,
                movie = movie,
                quality_id = group['meta_data']['quality'].get('id'),
                status_id = done_status.get('id')
            )
            db.add(rel)
            db.commit()

        # Add each file type
        added_files = []
        for type in group['files']:
            for cur_file in group['files'][type]:
                added_file = self.saveFile(cur_file, type = type, include_media_info = type is 'movie')
                added_files.append(added_file.get('id'))

        # Add the release files in batch
        try:
            added_files = db.query(File).filter(or_(*[File.id == x for x in added_files])).all()
            rel.files.extend(added_files)
            db.commit()
        except:
            log.debug('Failed to attach "%s" to release: %s', (added_files, traceback.format_exc()))

        fireEvent('movie.restatus', movie.id)

        return True


    def saveFile(self, filepath, type = 'unknown', include_media_info = False):

        properties = {}

        # Get media info for files
        if include_media_info:
            properties = {}

        # Check database and update/insert if necessary
        return fireEvent('file.add', path = filepath, part = fireEvent('scanner.partnumber', file, single = True), type_tuple = Scanner.file_types.get(type), properties = properties, single = True)

    def deleteView(self, id = None, **kwargs):

        return {
            'success': self.delete(id)
        }

    def delete(self, id):

        db = get_session()

        rel = db.query(Relea).filter_by(id = id).first()
        if rel:
            rel.delete()
            db.commit()
            return True

        return False

    def clean(self, id):

        db = get_session()

        rel = db.query(Relea).filter_by(id = id).first()
        if rel:
            for release_file in rel.files:
                if not os.path.isfile(ss(release_file.path)):
                    db.delete(release_file)
            db.commit()

            if len(rel.files) == 0:
                self.delete(id)

            return True

        return False

    def ignore(self, id = None, **kwargs):

        db = get_session()

        rel = db.query(Relea).filter_by(id = id).first()
        if rel:
            ignored_status, failed_status, available_status = fireEvent('status.get', ['ignored', 'failed', 'available'], single = True)
            self.updateStatus(id, available_status if rel.status_id in [ignored_status.get('id'), failed_status.get('id')] else ignored_status)

        return {
            'success': True
        }

    def download(self, id = None, **kwargs):

        db = get_session()

        snatched_status, done_status = fireEvent('status.get', ['snatched', 'done'], single = True)

        rel = db.query(Relea).filter_by(id = id).first()
        if rel:
            item = {}
            for info in rel.info:
                item[info.identifier] = info.value

            fireEvent('notify.frontend', type = 'release.download', data = True, message = 'Snatching "%s"' % item['name'])

            # Get matching provider
            provider = fireEvent('provider.belongs_to', item['url'], provider = item.get('provider'), single = True)

            if not item.get('protocol'):
                item['protocol'] = item['type']
                item['type'] = 'movie'

            if item.get('protocol') != 'torrent_magnet':
                item['download'] = provider.loginDownload if provider.urls.get('login') else provider.download

            success = fireEvent('searcher.download', data = item, media = rel.media.to_dict({
                'profile': {'types': {'quality': {}}},
                'releases': {'status': {}, 'quality': {}},
                'library': {'titles': {}, 'files':{}},
                'files': {}
            }), manual = True, single = True)

            if success:
                db.expunge_all()
                rel = db.query(Relea).filter_by(id = id).first() # Get release again @RuudBurger why do we need to get it again??

                fireEvent('notify.frontend', type = 'release.download', data = True, message = 'Successfully snatched "%s"' % item['name'])
            return {
                'success': success
            }
        else:
            log.error('Couldn\'t find release with id: %s', id)

        return {
            'success': False
        }

    def createFromSearch(self, search_results, media, quality_type):

        available_status, ignored_status, failed_status = fireEvent('status.get', ['available', 'ignored', 'failed'], single = True)
        db = get_session()

        found_releases = []

        for rel in search_results:

            rel_identifier = md5(rel['url'])
            found_releases.append(rel_identifier)

            rls = db.query(Relea).filter_by(identifier = rel_identifier).first()
            if not rls:
                rls = Relea(
                    identifier = rel_identifier,
                    media_id = media.get('id'),
                    quality_id = quality_type.get('quality_id'),
                    status_id = available_status.get('id')
                )
                db.add(rls)
            else:
                [db.delete(old_info) for old_info in rls.info]
                rls.last_edit = int(time.time())

            db.commit()

            for info in rel:
                try:
                    if not isinstance(rel[info], (str, unicode, int, long, float)):
                        continue

                    rls_info = ReleaseInfo(
                        identifier = info,
                        value = toUnicode(rel[info])
                    )
                    rls.info.append(rls_info)
                except InterfaceError:
                    log.debug('Couldn\'t add %s to ReleaseInfo: %s', (info, traceback.format_exc()))

            db.commit()

            rel['status_id'] = rls.status_id

        return found_releases

    def forMovie(self, id = None):

        db = get_session()

        releases_raw = db.query(Relea) \
            .options(joinedload_all('info')) \
            .options(joinedload_all('files')) \
            .filter(Relea.media_id == id) \
            .all()

        releases = [r.to_dict({'info':{}, 'files':{}}) for r in releases_raw]
        releases = sorted(releases, key = lambda k: k['info'].get('score', 0), reverse = True)

        return releases

    def forMovieView(self, id = None, **kwargs):

        releases = self.forMovie(id)

        return {
            'releases': releases,
            'success': True
        }

    def updateStatus(self, id, status = None):
        if not status: return

        db = get_session()

        rel = db.query(Relea).filter_by(id = id).first()
        if rel and status and rel.status_id != status.get('id'):

            item = {}
            for info in rel.info:
                item[info.identifier] = info.value

            #update status in Db
            log.debug('Marking release %s as %s', (item['name'], status.get("label")))
            rel.status_id = status.get('id')
            rel.last_edit = int(time.time())
            db.commit()

            #Update all movie info as there is no release update function
            fireEvent('notify.frontend', type = 'release.update_status.%s' % rel.id, data = status.get('id'))