import json
import uuid
from datetime import datetime

from aiohttp import ClientSession, FormData
import html
from classquiz.db.models import Quiz, QuizAnswer, QuizQuestion, User
from classquiz.kahoot_importer.get import get as get_quiz
from classquiz.config import settings
settings = settings()

async def _download_image(url: str) -> bytes:
    async with ClientSession() as session:
        async with session.get(url) as resp:
            return await resp.read()


async def _upload_to_imgur(image: bytes, album_id: str | None) -> str:
    """
    Uploads an image to Imgur.
    :param image: The image to upload.
    :return: The URL of the image on Imgur.
    """

    formdata = FormData()
    formdata.add_field('image', image, filename='image.png')
    if album_id:
        formdata.add_field('album', album_id)
    async with ClientSession(headers={"Authorization": f"Client-ID {settings.imgur_client_id}"}) as session:
        async with session.post("https://api.imgur.com/3/image", data=image) as resp:
            data = await resp.json()
            return data["data"]["link"]


async def _generate_imgur_album(quiz_id: str) -> str:
    """
    Generates an album on Imgur.
    :param quiz_id: The ID of the quiz.
    :return: The URL of the album on Imgur.
    """
    formdata = FormData()
    formdata.add_field('title', quiz_id)
    async with ClientSession(headers={"Authorization": f"Client-ID {settings.imgur_client_id}"}) as session:
        async with session.post("https://api.imgur.com/3/album", data={"title": "Quiz: " + quiz_id}, ) as resp:
            data = await resp.json()
            return data["data"]["id"]


async def import_quiz(quiz_id: str, user: User) -> Quiz | str:
    """
    Imports a quiz from Kahoot.
    :param user: The user object
    :param quiz_id: The ID of the quiz to import.
    :return: True if the import was successful, False otherwise.
    """
    quiz = await get_quiz(quiz_id)
    if quiz is None:
        return "quiz not found"
    quiz_questions: list[dict] = []
    imgur_album_id = await _generate_imgur_album(quiz_id)

    for q in quiz.kahoot.questions:
        answers: list[QuizAnswer] = []
        image = None
        if q.image is not None and q.image != "":
            image_bytes = await _download_image(q.image)
            image = await _upload_to_imgur(image_bytes, imgur_album_id)
            # image = q.image
        for a in q.choices:
            answers.append((QuizAnswer(right=a.correct, answer=html.unescape(a.answer))))
        quiz_questions.append(
            QuizQuestion(question=q.question, answers=answers, time=str(q.time / 1000), image=image).dict())
    quiz_data = Quiz(id=uuid.uuid4(), public=False, title=quiz.kahoot.title, description=quiz.kahoot.description,
                     created_at=datetime.now(), updated_at=datetime.now(), user_id=user.id,
                     questions=json.dumps(quiz_questions))
    return await quiz_data.save()