import os
import tempfile

import requests
import sentry_sdk
from django.db import models
from djconfig import config
from telebot import TeleBot
from telebot.types import InputMediaPhoto
from vk_api import VkApi
from vk_api.audio import VkAudio

from feeds.models import FeedModuleConfig
from feeds.utils import DatabaseConfig


def get_vk_photo(attachment):
    for size in (2560, 1280, 807, 604, 130, 75):
        if f'photo_{size}' in attachment:
            return attachment[f'photo_{size}']
    return None


def get_file(url):
    fname = '?'.join(url.split('?')[:-1])
    extension = os.path.basename(fname).split('.')[-1]
    f = tempfile.NamedTemporaryFile(suffix=f'.{extension}' if extension else None)
    r = requests.get(url, stream=True)
    for chunk in r.iter_content(1024 * 1024):
        if chunk:
            f.write(chunk)
    f.seek(0)
    return f


class VKFeedModuleConfig(FeedModuleConfig):
    owner_id = models.IntegerField()
    send_text = models.BooleanField(default=True)
    send_links = models.BooleanField(default=True)

    MODULE_NAME = 'VK feed'

    def execute(self, bot: TeleBot, chat_id, last_id):
        config._reload_maybe()

        if last_id is None:
            last_id = 0

        vk_session = VkApi(login=config.vk_username, password=config.vk_password, config=DatabaseConfig,
                           api_version='5.60')
        vk_session.auth()
        vk_audio = VkAudio(vk_session)
        vk = vk_session.get_api()
        wall_data = vk.wall.get(owner_id=self.owner_id)
        for post in reversed(wall_data['items']):
            if post['id'] > last_id:
                try:
                    if self.send_text and post['text']:
                        bot.send_message(chat_id, post['text'])
                    if 'attachments' in post:
                        photos = []
                        for image in filter(lambda a: 'photo' in a, post['attachments']):
                            url = get_vk_photo(image['photo'])
                            if url:
                                photos.append(url.replace('\\', ''))
                        if len(photos) == 1:
                            bot.send_photo(chat_id, photos[0])
                        elif len(photos) > 1:
                            bot.send_media_group(chat_id, [InputMediaPhoto(photo) for photo in photos])
                        for a in post['attachments']:
                            if 'audio' in a:
                                f = get_file(vk_audio.get_audio_by_id(a['audio']['owner_id'], a['audio']['id']))
                                bot.send_audio(chat_id, f, a['audio'].get('duration'),
                                               a['audio'].get('artist'), a['audio'].get('title'))
                    if self.send_links:
                        bot.send_message(chat_id, f"https://vk.com/wall{post['owner_id']}_{post['id']}",
                                         disable_web_page_preview=True)
                except Exception as e:
                    sentry_sdk.capture_exception(e)
                last_id = post['id']
        return last_id