import asyncio
import logging
from glob import iglob
from io import BytesIO
from os import getcwd, makedirs, path, remove
from pathlib import Path
from shutil import disk_usage, rmtree
from traceback import format_exc
from uuid import uuid4
from zipfile import ZipFile

from convopyro import listen_message
from photosapi_client.errors import UnexpectedStatus
from pyrogram import filters
from pyrogram.client import Client
from pyrogram.types import Message
from ujson import loads

from classes.pyroclient import PyroClient
from modules.api_client import (
    BodyPhotoUploadAlbumsAlbumPhotosPost,
    File,
    client,
    photo_delete,
    photo_upload,
)
from modules.utils import USERS_WITH_CONTEXT, extract_and_save

logger = logging.getLogger(__name__)


@Client.on_message(~filters.scheduled & filters.command(["import"], prefixes=["", "/"]))
async def cmd_import(app: PyroClient, msg: Message):
    if msg.from_user.id not in app.admins:
        return

    global USERS_WITH_CONTEXT

    if msg.from_user.id not in USERS_WITH_CONTEXT:
        USERS_WITH_CONTEXT.append(msg.from_user.id)
    else:
        return

    await msg.reply_text(
        app._("import_request", "message", locale=msg.from_user.language_code)
    )

    answer = await listen_message(app, msg.chat.id, timeout=600)

    USERS_WITH_CONTEXT.remove(msg.from_user.id)

    if answer is None:
        await msg.reply_text(
            app._("import_ignored", "message", locale=msg.from_user.language_code),
            quote=True,
        )
        return

    if answer.text == "/cancel":
        await answer.reply_text(
            app._("import_abort", "message", locale=msg.from_user.language_code)
        )
        return

    if answer.document is None:
        await answer.reply_text(
            app._(
                "import_invalid_media",
                "message",
                locale=msg.from_user.language_code,
            ),
            quote=True,
        )
        return

    if answer.document.mime_type != "application/zip":
        await answer.reply_text(
            app._("import_invalid_mime", "message", locale=msg.from_user.language_code),
            quote=True,
        )
        return

    if disk_usage(getcwd())[2] < (answer.document.file_size) * 3:
        await msg.reply_text(
            app._(
                "import_too_big", "message", locale=msg.from_user.language_code
            ).format(
                answer.document.file_size // (2**30),
                disk_usage(getcwd())[2] // (2**30),
            )
        )
        return

    tmp_dir = str(uuid4())

    logging.info(
        "Importing '%s' file %s bytes big (TMP ID %s)",
        answer.document.file_name,
        answer.document.file_size,
        tmp_dir,
    )

    makedirs(Path(f"{app.config['locations']['tmp']}/{tmp_dir}"), exist_ok=True)
    tmp_path = Path(f"{app.config['locations']['tmp']}/{answer.document.file_id}")

    downloading = await answer.reply_text(
        app._("import_downloading", "message", locale=msg.from_user.language_code),
        quote=True,
    )

    await app.download_media(answer, file_name=str(tmp_path))
    await downloading.edit(
        app._("import_unpacking", "message", locale=msg.from_user.language_code)
    )

    try:
        with ZipFile(tmp_path, "r") as handle:
            tasks = [
                extract_and_save(
                    handle, name, Path(f"{app.config['locations']['tmp']}/{tmp_dir}")
                )
                for name in handle.namelist()
            ]
            _ = await asyncio.gather(*tasks)
    except Exception as exp:
        logger.error(
            "Could not import '%s' due to %s: %s",
            answer.document.file_name,
            exp,
            format_exc(),
        )
        await answer.reply_text(
            app._(
                "import_unpack_error", "message", locale=msg.from_user.language_code
            ).format(exp, format_exc())
        )
        return

    logger.info("Downloaded '%s' - awaiting upload", answer.document.file_name)

    await downloading.edit(
        app._("import_uploading", "message", locale=msg.from_user.language_code)
    )

    remove(tmp_path)

    for filename in iglob(
        str(Path(f"{app.config['locations']['tmp']}/{tmp_dir}")) + "**/**",
        recursive=True,
    ):
        if not path.isfile(filename):
            continue

        with open(str(filename), "rb") as fh:
            photo_bytes = BytesIO(fh.read())

        try:
            uploaded = await photo_upload(
                app.config["posting"]["api"]["album"],
                client=client,
                multipart_data=BodyPhotoUploadAlbumsAlbumPhotosPost(
                    File(photo_bytes, Path(filename).name, "image/jpeg")
                ),
                ignore_duplicates=app.config["submission"]["allow_duplicates"],
                compress=False,
                caption="queue",
            )
        except UnexpectedStatus as exp:
            logger.error(
                "Could not upload '%s' from '%s': %s",
                filename,
                Path(f"{app.config['locations']['tmp']}/{tmp_dir}"),
                exp,
            )
            await msg.reply_text(
                app._(
                    "import_upload_error_other",
                    "message",
                    locale=msg.from_user.language_code,
                ).format(path.basename(filename)),
                disable_notification=True,
            )
            continue

        uploaded_dict = loads(uploaded.content.decode("utf-8"))

        if "duplicates" in uploaded_dict:
            logger.warning(
                "Could not upload '%s' from '%s'. Duplicates: %s",
                filename,
                Path(f"{app.config['locations']['tmp']}/{tmp_dir}"),
                str(uploaded_dict["duplicates"]),
            )

            if len(uploaded_dict["duplicates"]) > 0:
                await msg.reply_text(
                    app._(
                        "import_upload_error_duplicate",
                        "message",
                        locale=msg.from_user.language_code,
                    ).format(path.basename(filename)),
                    disable_notification=True,
                )
            else:
                await msg.reply_text(
                    app._(
                        "import_upload_error_other",
                        "message",
                        locale=msg.from_user.language_code,
                    ).format(path.basename(filename)),
                    disable_notification=True,
                )
        else:
            logger.info(
                "Uploaded '%s' from '%s' and got ID %s",
                filename,
                Path(f"{app.config['locations']['tmp']}/{tmp_dir}"),
                uploaded.parsed.id,
            )

    await downloading.delete()

    logger.info(
        "Removing '%s' after uploading",
        Path(f"{app.config['locations']['tmp']}/{tmp_dir}"),
    )
    rmtree(Path(f"{app.config['locations']['tmp']}/{tmp_dir}"), ignore_errors=True)

    await answer.reply_text(
        app._("import_finished", "message", locale=msg.from_user.language_code),
        quote=True,
    )

    return


@Client.on_message(~filters.scheduled & filters.command(["export"], prefixes=["", "/"]))
async def cmd_export(app: PyroClient, msg: Message):
    if msg.from_user.id not in app.admins:
        return


@Client.on_message(~filters.scheduled & filters.command(["remove"], prefixes=["", "/"]))
async def cmd_remove(app: PyroClient, msg: Message):
    if msg.from_user.id not in app.admins:
        return

    global USERS_WITH_CONTEXT

    if msg.from_user.id not in USERS_WITH_CONTEXT:
        USERS_WITH_CONTEXT.append(msg.from_user.id)
    else:
        return

    await msg.reply_text(
        app._("remove_request", "message", locale=msg.from_user.language_code)
    )

    answer = await listen_message(app, msg.chat.id, timeout=600)

    USERS_WITH_CONTEXT.remove(msg.from_user.id)

    if answer is None:
        await msg.reply_text(
            app._("remove_ignored", "message", locale=msg.from_user.language_code),
            quote=True,
        )
        return

    if answer.text == "/cancel":
        await answer.reply_text(
            app._("remove_abort", "message", locale=msg.from_user.language_code)
        )
        return

    response = await photo_delete(id=answer.text, client=client)

    if response:
        logger.info(
            "Removed '%s' by request of user %s", answer.text, answer.from_user.id
        )
        await answer.reply_text(
            app._(
                "remove_success", "message", locale=msg.from_user.language_code
            ).format(answer.text)
        )
    else:
        logger.warning(
            "Could not remove '%s' by request of user %s",
            answer.text,
            answer.from_user.id,
        )
        await answer.reply_text(
            app._(
                "remove_failure", "message", locale=msg.from_user.language_code
            ).format(answer.text)
        )


@Client.on_message(~filters.scheduled & filters.command(["purge"], prefixes=["", "/"]))
async def cmd_purge(app: PyroClient, msg: Message):
    if msg.from_user.id not in app.admins:
        return