'''
This file is part of tmdb-bot.

tmdb-bot is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General  Public License version 3 as published by
the Free Software Foundation.

tmdb-bot is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Affero General  Public License for more details.

You should have received a copy of the GNU Affero General  Public License
along with tmdb-bot.  If not, see <https://www.gnu.org/licenses/>.
'''
from html import escape
import aiohttp
import asyncio


class TmdbApi():
    def __init__(self):
        self.session = aiohttp.ClientSession()
        self.language = 'en'
        self.valid = False

    async def load_parameters(self):
        self.api_key = '51d75c00dc1502dc894b7773ec3e7a15'
        self.base_url = "https://api.themoviedb.org/3/"
        async with self.session.get(self.base_url + 'configuration', params=self.get_apikey()) as resp:
            result = await resp.json()
            self.base_url_images = result['images']['base_url']
            self.base_url_poster = self.base_url_images + result['images']['poster_sizes'][0]
            self.poster_sizes = result['images']['poster_sizes']

    def get_apikey(self):
        return {'api_key': self.api_key}

    async def request(self, request_uri, params: dict = {}):
        url = self.base_url + request_uri.lstrip('/')
        params.update(self.get_apikey())
        params.update({'language': self.language})
        result = None
        async with self.session.get(url, params=params) as resp:
            result = await resp.json()
            self.valid = True
        return result

    def set_language(self, language):
        self.language = language

    async def close_session(self):
        await self.session.close()


class TmdbApiSingle(TmdbApi):
    def __init__(self):
        super().__init__()
        self.title = None
        self.id = None
        self.poster_url = None
        self.poster_binary = None
        self.overview = None
        self.web_url = None
        self.vote_average = None

    def get_image_binary(self):
        return self.poster_binary

    async def query_image_binary(self):
        if self.poster_url:
            async with self.session.get(self.poster_url) as resp:
                self.poster_binary = await resp.read()
        else:
            self.poster_binary = None

    def set_poster_size(self, size):
        for x in self.poster_sizes:
            if x == size:
                self.base_url_poster = self.base_url_images + x
                return x
        return None


class MoviePopular(TmdbApi):
    def __init__(self):
        super().__init__()
        self.list = []
        self.length = 0

    async def query(self) -> int:
        result = await self.request('/movie/popular')
        self.length = result['total_results']
        self.list = result['results']
        return self.length

    def getListHtml(self, length: int = None) -> str:
        html = ""
        if length:
            loop = length
        else:
            loop = self.length
        for element in self.list[:loop]:
            html += f"""<p><a href="https://www.themoviedb.org/movie/{str(element['id'])}">{escape(element['title'])}</a></p>"""
        return html

    def getListText(self, length: int = None) -> str:
        text = ""
        if length:
            loop = length
        else:
            loop = self.length
        for element in self.list[:loop]:
            text += element['title']
        return text


class Movie(TmdbApiSingle):
    def __init__(self):
        super().__init__()

    async def search_title(self, title: str, year: int = None) -> int:
        payload = {}
        payload['query'] = title
        if year:
            payload['year'] = year
        json = await self.request('search/movie', params=payload)
        if json['total_results'] > 0:
            movie_id = json['results'][0]['id']
            await self.query_details(movie_id)
            await asyncio.gather(
                self.query_cast(movie_id),
                self.query_image_binary())
            return movie_id
        else:
            self.valid = False
            return None

    async def query_details(self, id):
        data = await self.request('movie/' + str(id))
        self.title = data['title']
        if not self.title:
            self.valid = False
        self.id = data['id']
        self.poster_url = self.base_url_poster + data['poster_path']
        self.overview = data['overview']
        self.web_url = 'https://www.themoviedb.org/movie/' + str(self.id)
        self.vote_average = data['vote_average']

    async def query_cast(self, id):
        data = await self.request('movie/' + str(id) + '/credits')
        self.cast = []
        for actor in data['cast']:
            self.cast.append(actor['name'])

    def get_cast(self, amount):
        return self.cast[:amount]


class TvShow(TmdbApiSingle):
    def __init__(self):
        super().__init__()

    async def search_title(self, title, year: int = 0):
        payload = {}
        payload['query'] = title
        if year:
            payload['first_air_date_year'] = str(year)
        json = await self.request('/search/tv', params=payload)
        if json['total_results'] > 0:
            movie_id = json['results'][0]['id']
            await self.query_details(movie_id)
            await asyncio.gather(
                self.query_cast(),
                self.query_image_binary())
            return movie_id
        else:
            self.valid = False
            return None

    async def query_details(self, id):
        data = await self.request('tv/' + str(id))
        self.title = data['name']
        if not self.title:
            self.valid = False
        self.id = data['id']
        self.poster_url = self.base_url_poster + data['poster_path']
        self.overview = data['overview']
        self.web_url = 'https://www.themoviedb.org/tv/' + str(self.id)
        self.vote_average = data['vote_average']

    async def query_cast(self):
        data = await self.request('tv/' + str(self.id) + '/credits')
        self.cast = []
        for actor in data['cast']:
            self.cast.append(actor['name'])

    def get_cast(self, amount):
        return self.cast[:amount]