from base64 import b64encode
import os
from uuid import uuid4
import hashlib
import traceback

from requests import HTTPError

from couchpotato.core._base.downloader.main import DownloaderBase, ReleaseDownloadList
from couchpotato.core.helpers.encoding import tryUrlencode, sp
from couchpotato.core.helpers.variable import cleanHost
from couchpotato.core.logger import CPLog


log = CPLog(__name__)

autoload = 'NZBVortex'


class NZBVortex(DownloaderBase):

    protocol = ['nzb']
    api_level = None
    session_id = None

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

        # Send the nzb
        try:
            nzb_filename = self.createFileName(data, filedata, media, unique_tag = True)
            response = self.call('nzb/add', files = {'file': (nzb_filename, filedata, 'application/octet-stream')}, parameters = {
                'name': nzb_filename,
                'groupname': self.conf('group')
            })

            if response and response.get('result', '').lower() == 'ok':
                return self.downloadReturnId(nzb_filename)

            log.error('Something went wrong sending the NZB file. Response: %s', response)
            return False
        except:
            log.error('Something went wrong sending the NZB file: %s', traceback.format_exc())
            return False

    def test(self):
        try:
            login_result = self.login()
        except:
            return False

        return login_result

    def getAllDownloadStatus(self, ids):

        raw_statuses = self.call('nzb')

        release_downloads = ReleaseDownloadList(self)
        for nzb in raw_statuses.get('nzbs', []):
            nzb_id = os.path.basename(nzb['nzbFileName'])
            if nzb_id in ids:

                # Check status
                status = 'busy'
                if nzb['state'] == 20:
                    status = 'completed'
                elif nzb['state'] in [21, 22, 24]:
                    status = 'failed'

                release_downloads.append({
                    'temp_id': nzb['id'],
                    'id': nzb_id,
                    'name': nzb['uiTitle'],
                    'status': status,
                    'original_status': nzb['state'],
                    'timeleft': -1,
                    'folder': sp(nzb['destinationPath']),
                })

        return release_downloads

    def removeFailed(self, release_download):

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

        try:
            self.call('nzb/%s/cancel' % release_download['temp_id'])
        except:
            log.error('Failed deleting: %s', traceback.format_exc(0))
            return False

        return True

    def login(self):

        nonce = self.call('auth/nonce', auth = False).get('authNonce')
        cnonce = uuid4().hex
        hashed = b64encode(hashlib.sha256('%s:%s:%s' % (nonce, cnonce, self.conf('api_key'))).digest())

        params = {
            'nonce': nonce,
            'cnonce': cnonce,
            'hash': hashed
        }

        login_data = self.call('auth/login', parameters = params, auth = False)

        # Save for later
        if login_data.get('loginResult') == 'successful':
            self.session_id = login_data.get('sessionID')
            return True

        log.error('Login failed, please check you api-key')
        return False

    def call(self, call, parameters = None, is_repeat = False, auth = True, *args, **kwargs):

        # Login first
        if not parameters: parameters = {}
        if not self.session_id and auth:
            self.login()

        # Always add session id to request
        if self.session_id:
            parameters['sessionid'] = self.session_id

        params = tryUrlencode(parameters)

        url = cleanHost(self.conf('host')) + 'api/' + call

        try:
            data = self.getJsonData('%s%s' % (url, '?' + params if params else ''), *args, cache_timeout = 0, show_error = False, **kwargs)

            if data:
                return data
        except HTTPError as e:
            sc = e.response.status_code
            if sc == 403:
                # Try login and do again
                if not is_repeat:
                    self.login()
                    return self.call(call, parameters = parameters, is_repeat = True, **kwargs)

            log.error('Failed to parsing %s: %s', (self.getName(), traceback.format_exc()))
        except:
            log.error('Failed to parsing %s: %s', (self.getName(), traceback.format_exc()))

        return {}

    def getApiLevel(self):

        if not self.api_level:

            try:
                data = self.call('app/apilevel', auth = False)
                self.api_level = float(data.get('apilevel'))
            except HTTPError as e:
                sc = e.response.status_code
                if sc == 403:
                    log.error('This version of NZBVortex isn\'t supported. Please update to 2.8.6 or higher')
                else:
                    log.error('NZBVortex doesn\'t seem to be running or maybe the remote option isn\'t enabled yet: %s', traceback.format_exc(1))

        return self.api_level

    def isEnabled(self, manual = False, data = None):
        if not data: data = {}
        return super(NZBVortex, self).isEnabled(manual, data) and self.getApiLevel()


config = [{
    'name': 'nzbvortex',
    'groups': [
        {
            'tab': 'downloaders',
            'list': 'download_providers',
            'name': 'nzbvortex',
            'label': 'NZBVortex',
            'description': 'Use <a href="http://www.nzbvortex.com/landing/" target="_blank">NZBVortex</a> to download NZBs.',
            'wizard': True,
            'options': [
                {
                    'name': 'enabled',
                    'default': 0,
                    'type': 'enabler',
                    'radio_group': 'nzb',
                },
                {
                    'name': 'host',
                    'default': 'https://localhost:4321',
                    'description': 'Hostname with port. Usually <strong>https://localhost:4321</strong>',
                },
                {
                    'name': 'api_key',
                    'label': 'Api Key',
                },
                {
                    'name': 'group',
                    'label': 'Group',
                    'description': 'The group CP places the nzb in. Make sure to create it in NZBVortex.',
                },
                {
                    'name': 'manual',
                    'default': False,
                    'type': 'bool',
                    'advanced': True,
                    'description': 'Disable this downloader for automated searches, but use it when I manually send a release.',
                },
                {
                    'name': 'delete_failed',
                    'default': True,
                    'advanced': True,
                    'type': 'bool',
                    'description': 'Delete a release after the download has failed.',
                },
            ],
        }
    ],
}]