from couchpotato.core.downloaders.base import Downloader, ReleaseDownloadList
from couchpotato.core.helpers.encoding import tryUrlencode, ss, sp
from couchpotato.core.helpers.variable import cleanHost, mergeDicts
from couchpotato.core.logger import CPLog
from couchpotato.environment import Env
from datetime import timedelta
from urllib2 import URLError
import json
import os
import traceback

log = CPLog(__name__)


class Sabnzbd(Downloader):

    protocol = ['nzb']

    def download(self, data = None, media = None, filedata = None):
        if not media: media = {}
        if not data: data = {}

        log.info('Sending "%s" to SABnzbd.', data.get('name'))

        req_params = {
            'cat': self.conf('category'),
            'mode': 'addurl',
            'nzbname': self.createNzbName(data, media),
            'priority': self.conf('priority'),
        }

        nzb_filename = None
        if filedata:
            if len(filedata) < 50:
                log.error('No proper nzb available: %s', filedata)
                return False

            # If it's a .rar, it adds the .rar extension, otherwise it stays .nzb
            nzb_filename = self.createFileName(data, filedata, media)
            req_params['mode'] = 'addfile'
        else:
            req_params['name'] = data.get('url')

        try:
            if nzb_filename and req_params.get('mode') is 'addfile':
                sab_data = self.call(req_params, files = {'nzbfile': (ss(nzb_filename), filedata)})
            else:
                sab_data = self.call(req_params)
        except URLError:
            log.error('Failed sending release, probably wrong HOST: %s', traceback.format_exc(0))
            return False
        except:
            log.error('Failed sending release, use API key, NOT the NZB key: %s', traceback.format_exc(0))
            return False

        log.debug('Result from SAB: %s', sab_data)
        if sab_data.get('status') and not sab_data.get('error'):
            log.info('NZB sent to SAB successfully.')
            if filedata:
                return self.downloadReturnId(sab_data.get('nzo_ids')[0])
            else:
                return True
        else:
            log.error('Error getting data from SABNZBd: %s', sab_data)
            return False

    def getAllDownloadStatus(self, ids):

        log.debug('Checking SABnzbd download status.')

        # Go through Queue
        try:
            queue = self.call({
                'mode': 'queue',
            })
        except:
            log.error('Failed getting queue: %s', traceback.format_exc(1))
            return []

        # Go through history items
        try:
            history = self.call({
                'mode': 'history',
                'limit': 15,
            })
        except:
            log.error('Failed getting history json: %s', traceback.format_exc(1))
            return []

        release_downloads = ReleaseDownloadList(self)

        # Get busy releases
        for nzb in queue.get('slots', []):
            if nzb['nzo_id'] in ids:
                status = 'busy'
                if 'ENCRYPTED / ' in nzb['filename']:
                    status = 'failed'
    
                release_downloads.append({
                    'id': nzb['nzo_id'],
                    'name': nzb['filename'],
                    'status': status,
                    'original_status': nzb['status'],
                    'timeleft': nzb['timeleft'] if not queue['paused'] else -1,
                })

        # Get old releases
        for nzb in history.get('slots', []):
            if nzb['nzo_id'] in ids:
                status = 'busy'
                if nzb['status'] == 'Failed' or (nzb['status'] == 'Completed' and nzb['fail_message'].strip()):
                    status = 'failed'
                elif nzb['status'] == 'Completed':
                    status = 'completed'
    
                release_downloads.append({
                    'id': nzb['nzo_id'],
                    'name': nzb['name'],
                    'status': status,
                    'original_status': nzb['status'],
                    'timeleft': str(timedelta(seconds = 0)),
                    'folder': sp(os.path.dirname(nzb['storage']) if os.path.isfile(nzb['storage']) else nzb['storage']),
                })

        return release_downloads

    def removeFailed(self, release_download):

        log.info('%s failed downloading, deleting...', release_download['name'])

        try:
            self.call({
                'mode': 'queue',
                'name': 'delete',
                'del_files': '1',
                'value': release_download['id']
            }, use_json = False)
            self.call({
                'mode': 'history',
                'name': 'delete',
                'del_files': '1',
                'value': release_download['id']
            }, use_json = False)
        except:
            log.error('Failed deleting: %s', traceback.format_exc(0))
            return False

        return True

    def processComplete(self, release_download, delete_files = False):
        log.debug('Requesting SabNZBd to remove the NZB %s.', release_download['name'])

        try:
            self.call({
                'mode': 'history',
                'name': 'delete',
                'del_files': '0',
                'value': release_download['id']
            }, use_json = False)
        except:
            log.error('Failed removing: %s', traceback.format_exc(0))
            return False

        return True

    def call(self, request_params, use_json = True, **kwargs):

        url = cleanHost(self.conf('host'), ssl = self.conf('ssl')) + 'api?' + tryUrlencode(mergeDicts(request_params, {
           'apikey': self.conf('api_key'),
           'output': 'json'
        }))

        data = self.urlopen(url, timeout = 60, show_error = False, headers = {'User-Agent': Env.getIdentifier()}, **kwargs)
        if use_json:
            d = json.loads(data)
            if d.get('error'):
                log.error('Error getting data from SABNZBd: %s', d.get('error'))
                return {}

            return d.get(request_params['mode']) or d
        else:
            return data