#!/usr/bin/env python3

import uuid

from flask_restful import Resource
from flask import request, current_app, abort
import musicbrainzngs

from fred import flaskred
from config import ENCODED_SECRET_KEY
from schemas import UserSchema
from aes_encrypt import EncryptedUserRedis

"""
Flask Restful endpoints
"""

__author__ = '@tormakris'
__copyright__ = "Copyright 2020, onSpot Team"
__module_name__ = "resources"
__version__text__ = "1"

INVALID_JSON_SCHEMA_MSG = "invalid json schema"


class LoginApi(Resource):
    userschema = UserSchema(many=False)
    encryptor = EncryptedUserRedis(ENCODED_SECRET_KEY)

    def post(self):
        """
         See: https://swagger.kmlabz.com/?urls.primaryName=onSpot%20Backend#/backend/logon
        """
        body = request.get_json()

        try:
            userobj = self.userschema.load(body)
        except Exception as e:
            current_app.logger.warning(e)
            abort(417, INVALID_JSON_SCHEMA_MSG)

        try:
            musicbrainzngs.auth(userobj['name'], userobj['password'])
            print(musicbrainzngs.get_collections())
            musicbrainzngs.auth(None, None)
        except Exception as e:
            current_app.logger.warning(e)
            abort(401, "login denied to musicbrainz")

        self.encryptor.store(body)
        token = str(uuid.uuid4())
        flaskred.set(token, userobj['name'].encode('UTF-8'))

        return {
                   'token': token
               }, 200

    def delete(self):
        """
         See: https://swagger.kmlabz.com/?urls.primaryName=onSpot%20Backend#/backend/logoff
        """
        try:
            flaskred.delete(flaskred.get(request.headers.get('Authorization')).decode('UTF-8'))
            flaskred.delete(request.headers.get('Authorization'))
        except Exception as e:
            current_app.logger.warning(e)
            abort(401, "unauthorized")

        return "", 204


class MeApi(Resource):
    """
    See: https://swagger.kmlabz.com/?urls.primaryName=onSpot%20Backend#/backend/currentUser
    """

    def get(self):
        try:
            currusername = flaskred.get(request.headers.get('Authorization')).decode('UTF-8')
        except Exception as e:
            current_app.logger.warning(e)
            abort(401, "unauthorized")
        return {"name": currusername}, 200


class ListsApi(Resource):
    """
    See: https://swagger.kmlabz.com/?urls.primaryName=onSpot%20Backend#/backend/getAllLists
    """
    encryptor = EncryptedUserRedis(ENCODED_SECRET_KEY)

    def get(self):
        try:
            currcreds = self.encryptor.load(flaskred.get(request.headers.get('Authorization')).decode('UTF-8'))
        except Exception as e:
            current_app.logger.warning(e)
            abort(401, "unauthorized")

        musicbrainzngs.auth(currcreds['name'], currcreds['password'])
        collections = musicbrainzngs.get_collections()
        musicbrainzngs.auth(None, None)
        elementlist = []
        for collection in collections['collection-list']:
            if collection['entity-type'] == 'release':
                count = collection['release-count']
            elif collection['entity-type'] == 'artist':
                count = collection['artist-count']
            elif collection['entity-type'] == 'work':
                count = collection['work-count']
            elif collection['entity-type'] == 'recording':
                count = collection['recording-count']
            else:
                continue
            flaskred.set(collection['id'], collection['entity-type'].encode('UTF-8'))
            elementlist.append({"id": collection['id'], "name": collection['name'], "element_count": count,
                                "type": collection['entity-type']})
        returndict = {"count": collections['collection-count'],
                      "ids": elementlist}

        return returndict, 200


class SingleListApi(Resource):
    """
    See: https://swagger.kmlabz.com/?urls.primaryName=onSpot%20Backend#/backend/getList
    """
    encryptor = EncryptedUserRedis(ENCODED_SECRET_KEY)

    def get(self, listid: str):
        try:
            currcreds = self.encryptor.load(flaskred.get(request.headers.get('Authorization')).decode('UTF-8'))
        except Exception as e:
            current_app.logger.warning(e)
            abort(401, "unauthorized")
        try:
            list_type = flaskred.get(listid).decode('UTF-8')
        except Exception as e:
            current_app.logger.warning(e)
            abort(404, "unknown list")
        musicbrainzngs.auth(currcreds['name'], currcreds['password'])
        limit = int(request.args.get('limit', 10))
        offset = int(request.args.get('offset', 0))
        if list_type == 'release':
            currdata = musicbrainzngs.get_releases_in_collection(listid, limit, offset)['collection']
            releaselist = []
            for release in currdata['release-list']:
                releasedata = {"id": release['id'], "album": release['title']}
                currrelease = musicbrainzngs.get_release_by_id(release['id'], includes=['artists'])
                if 'artist-credit' in currrelease['release'] and currrelease['release']['artist-credit']:
                    currartist = currrelease['release']['artist-credit'][0]['artist']
                    releasedata['artist'] = currartist['name']
                releaselist.append(releasedata)
                flaskred.set(release['id'], 'release'.encode('UTF-8'))
            retdata = {"id": currdata['id'], "element_count": currdata['release-count'], "itemlist": releaselist}
        elif list_type == 'artist':
            currdata = musicbrainzngs.get_artists_in_collection(listid, limit, offset)['collection']
            artistlist = []
            for artist in currdata['artist-list']:
                artistlist.append({"id": artist['id'], "artist": artist['name']})
                flaskred.set(artist['id'], 'artist'.encode('UTF-8'))
            retdata = {"id": currdata['id'], "element_count": currdata['artist-count'], "itemlist": artistlist}
        elif list_type == 'work':
            currdata = musicbrainzngs.get_works_in_collection(listid, limit, offset)['collection']
            worklist = []
            for work in currdata['work-list']:
                worklist.append({"id": work['id'], "title": work['title']})
                flaskred.set(work['id'], 'recording'.encode('UTF-8'))
            retdata = {"id": currdata['id'], "element_count": currdata['work-count'], "itemlist": worklist}
        elif list_type == 'recording':
            currdata = musicbrainzngs.get_recordings_in_collection(listid, limit, offset)['collection']
            recordinglist = []
            for recording in currdata['recording-list']:
                currrec = {"id": recording['id'], "title": recording['title']}
                currrecording = musicbrainzngs.get_recording_by_id(recording['id'], includes=['artists', 'releases'])
                if 'artist-credit' in currrecording['recording'] and currrecording['recording']['artist-credit']:
                    currartist = currrecording['recording']['artist-credit'][0]['artist']
                    currrec['artist'] = currartist['name']
                if 'release-list' in currrecording['recording'] and currrecording['recording']['release-list']:
                    currrlease = currrecording['recording']['release-list'][0]
                    currrec['album'] = currrlease['title']
                recordinglist.append(currrec)
                flaskred.set(recording['id'], 'recording'.encode('UTF-8'))
            retdata = {"id": currdata['id'], "element_count": currdata['recording-count'], "itemlist": recordinglist}
        else:
            abort(417, "wrong type of collection")
        musicbrainzngs.auth(None, None)
        retdata['type'] = list_type
        retdata['name'] = currdata['name']
        return retdata, 200


class ItemApi(Resource):
    """
    See: https://swagger.kmlabz.com/?urls.primaryName=onSpot%20Backend#/backend/getItem
    """
    def get(self, itemid: str):
        try:
            item_type = flaskred.get(itemid).decode('UTF-8')
        except Exception as e:
            current_app.logger.warning(e)
            abort(404, "unknown item")
        if item_type == 'release':
            currrelease = musicbrainzngs.get_release_by_id(itemid, includes=['artists'])['release']
            print(currrelease)
            retdata = {"id": itemid, "album": currrelease['title']}
            if 'artist-credit' in currrelease and currrelease['artist-credit']:
                retdata['artist'] = currrelease['artist-credit'][0]['artist']['name']
        elif item_type == 'artist':
            currartist = musicbrainzngs.get_artist_by_id(itemid)['artist']
            retdata = {"id": itemid, "artist": currartist['name']}
        elif item_type == 'work':
            currwork = musicbrainzngs.get_work_by_id(itemid)['work']
            retdata = {"id": itemid, "title": currwork['title']}
        elif item_type == 'recording':
            currrecording = musicbrainzngs.get_recording_by_id(itemid, includes=['artists', 'releases'])['recording']
            retdata = {"id": itemid, "title": currrecording['title']}
            if 'artist-credit' in currrecording and currrecording['artist-credit']:
                currartist = currrecording['artist-credit'][0]['artist']
                retdata['artist'] = currartist['name']
            if 'release-list' in currrecording and currrecording['release-list']:
                currrlease = currrecording['release-list'][0]
                retdata['album'] = currrlease['title']
        else:
            abort(417, "wrong type of item")

        retdata['type'] = item_type
        return retdata, 200