from get_argv import config_dir

import gc
import os
import enzyme
import babelfish
import logging
from subliminal import core
import sqlite3
import ast
import langdetect
from bs4 import UnicodeDammit
from itertools import islice

from get_settings import path_replace_reverse, path_replace, path_replace_reverse_movie, path_replace_movie, get_general_settings
from get_languages import alpha2_from_alpha3

gc.enable()

def store_subtitles(file):
    # languages = []
    actual_subtitles = []
    if os.path.exists(file):
        if os.path.splitext(file)[1] == '.mkv':
            try:
                with open(file, 'rb') as f:
                    mkv = enzyme.MKV(f)
                
                for subtitle_track in mkv.subtitle_tracks:
                    try:
                        if alpha2_from_alpha3(subtitle_track.language) != None:
                            actual_subtitles.append([str(alpha2_from_alpha3(subtitle_track.language)),None])
                    except:
                        pass
            except:
                pass


        brazilian_portuguese = [".pt-br", ".pob", "pb"]
        try:
            subtitles = core.search_external_subtitles(file)
        except:
            pass
        else:
            for subtitle, language in subtitles.iteritems():
                if str(os.path.splitext(subtitle)[0]).lower().endswith(tuple(brazilian_portuguese)) is True:
                    actual_subtitles.append([str("pb"), path_replace_reverse(os.path.join(os.path.dirname(file), subtitle))])
                elif str(language) != 'und':
                    actual_subtitles.append([str(language), path_replace_reverse(os.path.join(os.path.dirname(file), subtitle))])
                else:
                    with open(path_replace(os.path.join(os.path.dirname(file), subtitle)), 'r') as f:
                        text = list(islice(f, 100))
                        text = ' '.join(text)
                        encoding = UnicodeDammit(text)
                        try:
                            text = text.decode(encoding.original_encoding)
                        except Exception as e:
                            logging.exception('Error trying to detect character encoding for this subtitles file: ' + path_replace(os.path.join(os.path.dirname(file), subtitle)) + ' You should try to delete this subtitles file manually and ask Bazarr to download it again.')
                        else:
                            detected_language = langdetect.detect(text)
                            if len(detected_language) > 0:
                                actual_subtitles.append([str(detected_language), path_replace_reverse(os.path.join(os.path.dirname(file), subtitle))])

            conn_db = sqlite3.connect(os.path.join(config_dir, 'db/bazarr.db'), timeout=30)
            c_db = conn_db.cursor()

            c_db.execute("UPDATE table_episodes SET subtitles = ? WHERE path = ?", (str(actual_subtitles), path_replace_reverse(file)))
            conn_db.commit()

            c_db.close()

    return actual_subtitles


def store_subtitles_movie(file):
    # languages = []
    actual_subtitles = []
    if os.path.exists(file):
        if os.path.splitext(file)[1] == '.mkv':
            try:
                with open(file, 'rb') as f:
                    mkv = enzyme.MKV(f)

                for subtitle_track in mkv.subtitle_tracks:
                    try:
                        if alpha2_from_alpha3(subtitle_track.language) != None:
                            actual_subtitles.append([str(alpha2_from_alpha3(subtitle_track.language)), None])
                    except:
                        pass
            except:
                pass

        subtitles = core.search_external_subtitles(file)
        brazilian_portuguese = [".pt-br", ".pob", "pb"]

        for subtitle, language in subtitles.iteritems():
            if str(os.path.splitext(subtitle)[0]).lower().endswith(tuple(brazilian_portuguese)) is True:
                actual_subtitles.append([str("pb"), path_replace_reverse_movie(os.path.join(os.path.dirname(file), subtitle))])
            elif str(language) != 'und':
                actual_subtitles.append([str(language), path_replace_reverse_movie(os.path.join(os.path.dirname(file), subtitle))])
            else:
                if os.path.splitext(subtitle)[1] != ".sub":
                    with open(path_replace_movie(os.path.join(os.path.dirname(file), subtitle)), 'r') as f:
                        text = list(islice(f, 100))
                        text = ' '.join(text)
                        encoding = UnicodeDammit(text)
                        try:
                            text = text.decode(encoding.original_encoding)
                        except Exception as e:
                            logging.exception('Error trying to detect character encoding for this subtitles file: ' + path_replace_movie(os.path.join(os.path.dirname(file), subtitle)) + ' You should try to delete this subtitles file manually and ask Bazarr to download it again.')
                        else:
                            detected_language = langdetect.detect(text)
                            if len(detected_language) > 0:
                                actual_subtitles.append([str(detected_language), path_replace_reverse_movie(os.path.join(os.path.dirname(file), subtitle))])

        conn_db = sqlite3.connect(os.path.join(config_dir, 'db/bazarr.db'), timeout=30)
        c_db = conn_db.cursor()

        c_db.execute("UPDATE table_movies SET subtitles = ? WHERE path = ?", (str(actual_subtitles), path_replace_reverse_movie(file)))
        conn_db.commit()

        c_db.close()

    return actual_subtitles


def list_missing_subtitles(*no):
    query_string = ''
    try:
        query_string = " WHERE table_shows.sonarrSeriesId = " + str(no[0])
    except:
        pass
    conn_db = sqlite3.connect(os.path.join(config_dir, 'db/bazarr.db'), timeout=30)
    c_db = conn_db.cursor()
    episodes_subtitles = c_db.execute("SELECT table_episodes.sonarrEpisodeId, table_episodes.subtitles, table_shows.languages FROM table_episodes INNER JOIN table_shows on table_episodes.sonarrSeriesId = table_shows.sonarrSeriesId" + query_string).fetchall()
    c_db.close()

    missing_subtitles_global = []
    use_embedded_subs = get_general_settings()[23]
    for episode_subtitles in episodes_subtitles:
        actual_subtitles_temp = []
        actual_subtitles = []
        desired_subtitles = []
        missing_subtitles = []
        if episode_subtitles[1] != None:
            if use_embedded_subs is True:
                actual_subtitles = ast.literal_eval(episode_subtitles[1])
            else:
                actual_subtitles_temp = ast.literal_eval(episode_subtitles[1])
                for subtitle in actual_subtitles_temp:
                    if subtitle[1] != None:
                        actual_subtitles.append(subtitle)
        if episode_subtitles[2] != None:
            desired_subtitles = ast.literal_eval(episode_subtitles[2])
        actual_subtitles_list = []
        if desired_subtitles == None:
            missing_subtitles_global.append(tuple(['[]', episode_subtitles[0]]))
        else:
            for item in actual_subtitles:
                if item[0] == "pt-BR":
                    actual_subtitles_list.append("pb")
                else:
                    actual_subtitles_list.append(item[0])
            missing_subtitles = list(set(desired_subtitles) - set(actual_subtitles_list))
            missing_subtitles_global.append(tuple([str(missing_subtitles), episode_subtitles[0]]))
            
    conn_db = sqlite3.connect(os.path.join(config_dir, 'db/bazarr.db'), timeout=30)
    c_db = conn_db.cursor()
    c_db.executemany("UPDATE table_episodes SET missing_subtitles = ? WHERE sonarrEpisodeId = ?", (missing_subtitles_global))
    conn_db.commit()
    c_db.close()


def list_missing_subtitles_movies(*no):
    query_string = ''
    try:
        query_string = " WHERE table_movies.radarrId = " + str(no[0])
    except:
        pass
    conn_db = sqlite3.connect(os.path.join(config_dir, 'db/bazarr.db'), timeout=30)
    c_db = conn_db.cursor()
    movies_subtitles = c_db.execute("SELECT radarrId, subtitles, languages FROM table_movies" + query_string).fetchall()
    c_db.close()

    missing_subtitles_global = []
    use_embedded_subs = get_general_settings()[23]
    for movie_subtitles in movies_subtitles:
        actual_subtitles_temp = []
        actual_subtitles = []
        desired_subtitles = []
        missing_subtitles = []
        if movie_subtitles[1] != None:
            if use_embedded_subs is True:
                actual_subtitles = ast.literal_eval(movie_subtitles[1])
            else:
                actual_subtitles_temp = ast.literal_eval(movie_subtitles[1])
                for subtitle in actual_subtitles_temp:
                    if subtitle[1] != None:
                        actual_subtitles.append(subtitle)
        if movie_subtitles[2] != None:
            desired_subtitles = ast.literal_eval(movie_subtitles[2])
        actual_subtitles_list = []
        if desired_subtitles == None:
            missing_subtitles_global.append(tuple(['[]', movie_subtitles[0]]))
        else:
            for item in actual_subtitles:
                if item[0] == "pt-BR":
                    actual_subtitles_list.append("pb")
                else:
                    actual_subtitles_list.append(item[0])
            missing_subtitles = list(set(desired_subtitles) - set(actual_subtitles_list))
            missing_subtitles_global.append(tuple([str(missing_subtitles), movie_subtitles[0]]))

    conn_db = sqlite3.connect(os.path.join(config_dir, 'db/bazarr.db'), timeout=30)
    c_db = conn_db.cursor()
    c_db.executemany("UPDATE table_movies SET missing_subtitles = ? WHERE radarrId = ?", (missing_subtitles_global))
    conn_db.commit()
    c_db.close()

def series_full_scan_subtitles():
    conn_db = sqlite3.connect(os.path.join(config_dir, 'db/bazarr.db'), timeout=30)
    c_db = conn_db.cursor()
    episodes = c_db.execute("SELECT path FROM table_episodes").fetchall()
    c_db.close()

    for episode in episodes:
        store_subtitles(path_replace(episode[0]))

    gc.collect()

def movies_full_scan_subtitles():
    conn_db = sqlite3.connect(os.path.join(config_dir, 'db/bazarr.db'), timeout=30)
    c_db = conn_db.cursor()
    movies = c_db.execute("SELECT path FROM table_movies").fetchall()
    c_db.close()

    for movie in movies:
        store_subtitles_movie(path_replace_movie(movie[0]))

    gc.collect()

def series_scan_subtitles(no):
    conn_db = sqlite3.connect(os.path.join(config_dir, 'db/bazarr.db'), timeout=30)
    c_db = conn_db.cursor()
    episodes = c_db.execute("SELECT path FROM table_episodes WHERE sonarrSeriesId = ?", (no,)).fetchall()
    c_db.close()
    
    for episode in episodes:
        store_subtitles(path_replace(episode[0]))

    list_missing_subtitles(no)


def movies_scan_subtitles(no):
    conn_db = sqlite3.connect(os.path.join(config_dir, 'db/bazarr.db'), timeout=30)
    c_db = conn_db.cursor()
    movies = c_db.execute("SELECT path FROM table_movies WHERE radarrId = ?", (no,)).fetchall()
    c_db.close()

    for movie in movies:
        store_subtitles_movie(path_replace_movie(movie[0]))

    list_missing_subtitles_movies(no)