# this is a small and single-purpose wrapper around the TMDB API

import json
import random
import urllib

class Tmdb:
    def __init__(self, apikey, language):
        self.baseurl = 'https://api.themoviedb.org/3/'
        self.apikey = apikey
        self.language = language

    # fetches data from TMDB API
    def fetch_from_tmdb(self, path, parameters):
        apikey = "?api_key=%s" % self.apikey
        url = self.baseurl + path + apikey + parameters
        json_url = urllib.urlopen(url)
        data = json.loads(json_url.read())
        return data

    # finds TMDB-id for a known IMDB-id, return 0 if nothing is found
    def get_tmdbid(self, imdbid):
        print("getting tmdbid for imdbid %s" % imdbid)
        data = self.fetch_from_tmdb(
            path = 'find/%s' % imdbid,
            parameters = '&external_source=imdb_id'
        )
        try:
            tmdbid = data['movie_results'][0]['id']
            print("tmdbid is %d" % tmdbid)
        except:
            tmdbid = 0
            print("tmdbid could not be found")
        return tmdbid

    # get recommendations for a movie id
    # choice is either "recommendations" or "similar"
    def get_recommendations(self, movieid, choice):
        print("getting %s for %d" % (choice, movieid))
        data = self.fetch_from_tmdb(
            path = 'movie/%d/%s' % (movieid, choice),
            parameters = '&language=%s' % self.language
        )
        results = []
        for result in data['results']:
            results.append({
                'title': result['title'],
                'movieid': result['id']
            })
        return results

    # get trailers, teasers, clips... for a movie id
    def get_movie_trailers(self, movieid):
        print("getting trailers for %d" % movieid)
        data = self.fetch_from_tmdb(
            path = 'movie/%d' % movieid,
            parameters = '&language=%s&append_to_response=videos' % self.language
        )
        results = []
        for result in data['videos']['results']:
            if result['site'] == 'YouTube':
                location = 'plugin://plugin.video.youtube/play/?video_id=%s' % result['key']
            else:
                # skip other sites
                next
            results.append({
                'title': result['name'],
                'type': result['type'],
                'location': location
            })
        return results

    # get a number of trailers of a certain kind for a list of recommended movies
    def get_trailers(self, recommendations, cliptype, count):
        results = []
        # loop over ten out of the list of recommendations
        random.shuffle(recommendations)
        for recommendation in recommendations[:10]:
            all_trailers = self.get_movie_trailers(recommendation['movieid'])
            # filter to get only a certain kind of trailer
            trailers = []
            for trailer in all_trailers:
                if trailer['type'] == cliptype:
                    trailers.append(trailer)
            # get a random clip for this recommendation
            if len(trailers) > 0:
                random.shuffle(trailers)
                trailer = trailers[0]
                results.append(trailer)
            # quit if enough clips have been collected
            if len(results) == count:
                break
        return results