"""
MIT License

Copyright (c) 2021 TheHamkerCat

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including witout limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
"""
from io import BytesIO
from os import path, remove
from time import time

import img2pdf
from PIL import Image
from pyrogram import filters
from pyrogram.types import Message

from wbb import app
from wbb.core.decorators.errors import capture_err
from wbb.core.sections import section


async def convert(
        main_message: Message,
        reply_messages,
        status_message: Message,
        start_time: float,
):
    m = status_message

    documents = []

    for message in reply_messages:
        if not message.document:
            return await m.edit("Not document, ABORTED!")

        if message.document.mime_type.split("/")[0] != "image":
            return await m.edit("Invalid mime type!")

        if message.document.file_size > 5000000:
            return await m.edit("Size too large, ABORTED!")
        documents.append(await message.download())

    for img_path in documents:
        img = Image.open(img_path).convert("RGB")
        img.save(img_path, "JPEG", quality=100)

    pdf = BytesIO(img2pdf.convert(documents))
    pdf.name = "wbb.pdf"

    if len(main_message.command) >= 2:
        names = main_message.text.split(None, 1)[1]
        if not names.endswith(".pdf"):
            pdf.name = names + ".pdf"
        else:
            pdf.name = names

    elapsed = round(time() - start_time, 2)

    await main_message.reply_document(
        document=pdf,
        caption=section(
            "IMG2PDF",
            body={
                "Title": pdf.name,
                "Size": f"{pdf.__sizeof__() / (10 ** 6)}MB",
                "Pages": len(documents),
                "Took": f"{elapsed}s",
            },
        ),
    )

    await m.delete()
    pdf.close()
    for file in documents:
        if path.exists(file):
            remove(file)


@app.on_message(filters.command("pdf"))
@capture_err
async def img_to_pdf(_, message: Message):
    reply = message.reply_to_message
    if not reply:
        return await message.reply(
            "Reply to an image (as document) or group of images."
        )

    m = await message.reply_text("Converting..")
    start_time = time()

    if reply.media_group_id:
        messages = await app.get_media_group(
            message.chat.id,
            reply.message_id,
        )
        return await convert(message, messages, m, start_time)

    return await convert(message, [reply], m, start_time)