from couchpotato import md5, get_db
from couchpotato.api import addApiView
from couchpotato.core.event import fireEvent, addEvent
from couchpotato.core.helpers.encoding import ss, toUnicode
from couchpotato.core.helpers.variable import getTitle
from couchpotato.core.logger import CPLog
from couchpotato.core.plugins.base import Plugin
from .index import ReleaseIndex, ReleaseStatusIndex, ReleaseIDIndex, ReleaseDownloadIndex
from couchpotato.environment import Env
from inspect import ismethod, isfunction
from sqlalchemy.exc import InterfaceError
import os
import time
import traceback

log = CPLog(__name__)


class Release(Plugin):

    def __init__(self):
        addApiView('release.manual_download', self.manualDownload, 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'}
            }
        })

        addEvent('release.add', self.add)
        addEvent('release.download', self.download)
        addEvent('release.try_download_result', self.tryDownloadResult)
        addEvent('release.create_from_search', self.createFromSearch)
        addEvent('release.delete', self.delete)
        addEvent('release.clean', self.clean)
        addEvent('release.update_status', self.updateStatus)

        addEvent('database.setup', self.databaseSetup)

        # Clean releases that didn't have activity in the last week
        addEvent('app.load', self.cleanDone)
        fireEvent('schedule.interval', 'movie.clean_releases', self.cleanDone, hours = 4)

    def databaseSetup(self):

        db = get_db()

        # Release media_id index
        try:
            db.add_index(ReleaseIndex(db.path, 'release'))
        except:
            log.debug('Index already exists')
            db.edit_index(ReleaseIndex(db.path, 'release'))

        # Release status index
        try:
            db.add_index(ReleaseStatusIndex(db.path, 'release_status'))
        except:
            log.debug('Index already exists')
            db.edit_index(ReleaseStatusIndex(db.path, 'release_status'))

        # Release identifier index
        try:
            db.add_index(ReleaseIDIndex(db.path, 'release_identifier'))
        except:
            log.debug('Index already exists')
            db.edit_index(ReleaseIDIndex(db.path, 'release_identifier'))

        # Release identifier index
        try:
            db.add_index(ReleaseDownloadIndex(db.path, 'release_download'))
        except:
            log.debug('Index already exists')
            db.edit_index(ReleaseDownloadIndex(db.path, 'release_download'))

    def cleanDone(self):
        log.debug('Removing releases from dashboard')

        now = time.time()
        week = 262080

        db = get_db()

        # get movies last_edit more than a week ago
        medias = db.run('media', 'with_status', ['done'])

        for media in medias:
            if media.get('last_edit', 0) > (now - week):
                continue

            for rel in db.run('release', 'for_media', media['_id']):

                # Remove all available releases
                if rel['status'] in ['available']:
                    self.delete(rel['_id'])

                # Set all snatched and downloaded releases to ignored to make sure they are ignored when re-adding the move
                elif rel['status'] in ['snatched', 'downloaded']:
                    self.updateStatus(rel['_id'], status = 'ignore')

    def add(self, group):

        try:
            db = get_db()

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

            # Add movie if it doesn't exist
            try:
                media = db.get('media', group['identifier'], with_doc = True)['doc']
            except:
                media = fireEvent('movie.add', params = {
                    'identifier': group['identifier'],
                    'profile_id': None,
                }, search_after = False, status = 'done', single = True)

            # Add Release
            release = {
                '_t': 'release',
                'media_id': media['_id'],
                'identifier': release_identifier,
                'quality': group['meta_data']['quality'].get('identifier'),
                'last_edit': int(time.time()),
                'status': 'done'
            }
            try:
                r = db.get('release_identifier', release_identifier, with_doc = True)['doc']
                r['media_id'] = media['_id']
            except:
                r = db.insert(release)

            # Update with ref and _id
            release.update({
                '_id': r['_id'],
                '_rev': r['_rev'],
            })

            # Empty out empty file groups
            release['files'] = dict((k, v) for k, v in group['files'].items() if v)
            db.update(release)

            fireEvent('media.restatus', media['_id'])

            return True
        except:
            log.error('Failed: %s', traceback.format_exc())

        return False

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

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

    def delete(self, release_id):

        try:
            db = get_db()
            rel = db.get('id', release_id)
            db.delete(rel)
            return True
        except:
            log.error('Failed: %s', traceback.format_exc())

        return False

    def clean(self, release_id):

        try:
            db = get_db()
            rel = db.get('id', release_id)

            if len(rel.get('files')) == 0:
                self.delete(rel['_id'])
            else:

                files = []
                for release_file in rel.get('files'):
                    if os.path.isfile(ss(release_file['path'])):
                        files.append(release_file)

                rel['files'] = files
                db.update(rel)

            return True
        except:
            log.error('Failed: %s', traceback.format_exc())

        return False

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

        db = get_db()

        try:
            rel = db.get('id', release_id, with_doc = True)
            self.updateStatus(release_id, 'available' if rel['status'] in ['ignored', 'failed'] else 'ignored')

            return {
                'success': True
            }
        except:
            log.error('Failed: %s', traceback.format_exc())

        return {
            'success': False
        }

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

        db = get_db()

        try:
            release = db.get('id', id)
            item = release['info']
            movie = db.get('id', release['media_id'])

            fireEvent('notify.frontend', type = 'release.manual_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 item.get('protocol') != 'torrent_magnet':
                item['download'] = provider.loginDownload if provider.urls.get('login') else provider.download

            success = self.download(data = item, media = movie, manual = True)

            if success:
                fireEvent('notify.frontend', type = 'release.manual_download', data = True, message = 'Successfully snatched "%s"' % item['name'])

            return {
                'success': success == True
            }

        except:
            log.error('Couldn\'t find release with id: %s: %s', (id, traceback.format_exc()))
            return {
                'success': False
            }

    def download(self, data, media, manual = False):

        # Test to see if any downloaders are enabled for this type
        downloader_enabled = fireEvent('download.enabled', manual, data, single = True)
        if not downloader_enabled:
            log.info('Tried to download, but none of the "%s" downloaders are enabled or gave an error', data.get('protocol'))
            return False

        # Download NZB or torrent file
        filedata = None
        if data.get('download') and (ismethod(data.get('download')) or isfunction(data.get('download'))):
            try:
                filedata = data.get('download')(url = data.get('url'), nzb_id = data.get('id'))
            except:
                log.error('Tried to download, but the "%s" provider gave an error: %s', (data.get('protocol'), traceback.format_exc()))
                return False

            if filedata == 'try_next':
                return filedata
            elif not filedata:
                return False

        # Send NZB or torrent file to downloader
        download_result = fireEvent('download', data = data, media = media, manual = manual, filedata = filedata, single = True)
        if not download_result:
            log.info('Tried to download, but the "%s" downloader gave an error', data.get('protocol'))
            return False
        log.debug('Downloader result: %s', download_result)

        try:
            db = get_db()

            try:
                rls = db.get('release_identifier', md5(data['url']), with_doc = True)['doc']
            except:
                log.error('No release found to store download information in')
                return False

            renamer_enabled = Env.setting('enabled', 'renamer')

            # Save download-id info if returned
            if isinstance(download_result, dict):
                rls['download_info'] = download_result
                db.update(rls)

            log_movie = '%s (%s) in %s' % (getTitle(media), media['info']['year'], rls['quality'])
            snatch_message = 'Snatched "%s": %s' % (data.get('name'), log_movie)
            log.info(snatch_message)
            fireEvent('%s.snatched' % data['type'], message = snatch_message, data = rls)

            # Mark release as snatched
            if renamer_enabled:
                self.updateStatus(rls['_id'], status = 'snatched')

            # If renamer isn't used, mark media done if finished or release downloaded
            else:

                if media['status'] == 'active':
                    profile = db.get('id', media['profile_id'])
                    finished = False
                    if rls['quality'] in profile['qualities']:
                        nr = profile['qualities'].index(rls['quality'])
                        finished = profile['finish'][nr]

                    if finished:
                        log.info('Renamer disabled, marking media as finished: %s', log_movie)

                        # Mark release done
                        self.updateStatus(rls['_id'], status = 'done')

                        # Mark media done
                        mdia = db.get('id', media['_id'])
                        mdia['status'] = 'done'
                        mdia['last_edit'] = int(time.time())
                        db.update(mdia)

                        return True

                # Assume release downloaded
                self.updateStatus(rls['_id'], status = 'downloaded')

        except:
            log.error('Failed storing download status: %s', traceback.format_exc())
            return False

        return True

    def tryDownloadResult(self, results, media, quality_custom, manual = False):

        for rel in results:
            if not quality_custom.get('finish', False) and quality_custom.get('wait_for', 0) > 0 and rel.get('age') <= quality_custom.get('wait_for', 0):
                log.info('Ignored, waiting %s days: %s', (quality_custom.get('wait_for'), rel['name']))
                continue

            if rel['status'] in ['ignored', 'failed']:
                log.info('Ignored: %s', rel['name'])
                continue

            if rel['score'] <= 0:
                log.info('Ignored, score to low: %s', rel['name'])
                continue

            downloaded = fireEvent('release.download', data = rel, media = media, manual = manual, single = True)
            if downloaded is True:
                return True
            elif downloaded != 'try_next':
                break

        return False

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

        try:
            db = get_db()

            found_releases = []

            for rel in search_results:

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

                release = {
                    '_t': 'release',
                    'identifier': rel_identifier,
                    'media_id': media.get('_id'),
                    'quality': quality.get('identifier'),
                    'status': 'available',
                    'last_edit': int(time.time()),
                    'info': {}
                }

                try:
                    rls = db.get('release_identifier', rel_identifier, with_doc = True)['doc']
                except:
                    rls = db.insert(release)
                    rls.update(release)

                # Update info, but filter out functions
                for info in rel:
                    try:
                        if not isinstance(rel[info], (str, unicode, int, long, float)):
                            continue

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

                db.update(rls)

                # Update release in search_results
                rel['status'] = rls.get('status')

            return found_releases
        except:
            log.error('Failed: %s', traceback.format_exc())

        return []

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

        try:
            db = get_db()

            rel = db.get('id', release_id)
            if rel and rel.get('status') != status:

                release_name = rel.get('name')
                if rel.get('files'):
                    for file_type in rel.get('files', {}):
                        if file_type == 'movie':
                            for release_file in rel['files'][file_type]:
                                release_name = os.path.basename(release_file)
                                break

                #update status in Db
                log.debug('Marking release %s as %s', (release_name, status))
                rel['status'] = status
                rel['last_edit'] = int(time.time())

                db.update(rel)

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

            return True
        except:
            log.error('Failed: %s', traceback.format_exc())

        return False