# Pyrogram - Telegram MTProto API Client Library for Python
# Copyright (C) 2017-2018 Dan Tès <https://github.com/delivrance>
#
# This file is part of Pyrogram.
#
# Pyrogram is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published
# by the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Pyrogram is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with Pyrogram.  If not, see <http://www.gnu.org/licenses/>.

import binascii
import mimetypes
import os
import struct
from typing import Union

import pyrogram
from pyrogram.api import functions, types
from pyrogram.api.errors import FileIdInvalid
from pyrogram.client.ext import BaseClient, utils
from pyrogram.client.types import (
    InputMediaPhoto, InputMediaVideo, InputMediaAudio,
    InputMediaAnimation, InputMediaDocument
)
from pyrogram.client.types.input_media import InputMedia


class EditMessageMedia(BaseClient):
    def edit_message_media(self,
                           chat_id: Union[int, str],
                           message_id: int,
                           media: InputMedia,
                           reply_markup: "pyrogram.InlineKeyboardMarkup" = None) -> "pyrogram.Message":
        """Use this method to edit audio, document, photo, or video messages.

        If a message is a part of a message album, then it can be edited only to a photo or a video. Otherwise,
        message type can be changed arbitrarily. When inline message is edited, new file can't be uploaded.
        Use previously uploaded file via its file_id or specify a URL. On success, if the edited message was sent
        by the bot, the edited Message is returned, otherwise True is returned.

        Args:
            chat_id (``int`` | ``str``):
                Unique identifier (int) or username (str) of the target chat.
                For your personal cloud (Saved Messages) you can simply use "me" or "self".
                For a contact that exists in your Telegram address book you can use his phone number (str).

            message_id (``int``):
                Message identifier in the chat specified in chat_id.

            media (:obj:`InputMediaAnimation` | :obj:`InputMediaAudio` | :obj:`InputMediaDocument` | :obj:`InputMediaPhoto` | :obj:`InputMediaVideo`)
                One of the InputMedia objects describing an animation, audio, document, photo or video.

            reply_markup (:obj:`InlineKeyboardMarkup`, *optional*):
                An InlineKeyboardMarkup object.

        Returns:
            On success, the edited :obj:`Message <pyrogram.Message>` is returned.

        Raises:
            :class:`Error <pyrogram.Error>` in case of a Telegram RPC error.
        """
        style = self.html if media.parse_mode.lower() == "html" else self.markdown
        caption = media.caption

        if isinstance(media, InputMediaPhoto):
            if os.path.exists(media.media):
                media = self.send(
                    functions.messages.UploadMedia(
                        peer=self.resolve_peer(chat_id),
                        media=types.InputMediaUploadedPhoto(
                            file=self.save_file(media.media)
                        )
                    )
                )

                media = types.InputMediaPhoto(
                    id=types.InputPhoto(
                        id=media.photo.id,
                        access_hash=media.photo.access_hash,
                        file_reference=b""
                    )
                )
            elif media.media.startswith("http"):
                media = types.InputMediaPhotoExternal(
                    url=media.media
                )
            else:
                try:
                    decoded = utils.decode(media.media)
                    fmt = "<iiqqqqi" if len(decoded) > 24 else "<iiqq"
                    unpacked = struct.unpack(fmt, decoded)
                except (AssertionError, binascii.Error, struct.error):
                    raise FileIdInvalid from None
                else:
                    if unpacked[0] != 2:
                        media_type = BaseClient.MEDIA_TYPE_ID.get(unpacked[0], None)

                        if media_type:
                            raise FileIdInvalid("The file_id belongs to a {}".format(media_type))
                        else:
                            raise FileIdInvalid("Unknown media type: {}".format(unpacked[0]))

                    media = types.InputMediaPhoto(
                        id=types.InputPhoto(
                            id=unpacked[2],
                            access_hash=unpacked[3],
                            file_reference=b""
                        )
                    )

        if isinstance(media, InputMediaVideo):
            if os.path.exists(media.media):
                media = self.send(
                    functions.messages.UploadMedia(
                        peer=self.resolve_peer(chat_id),
                        media=types.InputMediaUploadedDocument(
                            mime_type=mimetypes.types_map[".mp4"],
                            file=self.save_file(media.media),
                            attributes=[
                                types.DocumentAttributeVideo(
                                    supports_streaming=media.supports_streaming or None,
                                    duration=media.duration,
                                    w=media.width,
                                    h=media.height
                                ),
                                types.DocumentAttributeFilename(os.path.basename(media.media))
                            ]
                        )
                    )
                )

                media = types.InputMediaDocument(
                    id=types.InputDocument(
                        id=media.document.id,
                        access_hash=media.document.access_hash,
                        file_reference=b""
                    )
                )
            elif media.media.startswith("http"):
                media = types.InputMediaDocumentExternal(
                    url=media.media
                )
            else:
                try:
                    decoded = utils.decode(media.media)
                    fmt = "<iiqqqqi" if len(decoded) > 24 else "<iiqq"
                    unpacked = struct.unpack(fmt, decoded)
                except (AssertionError, binascii.Error, struct.error):
                    raise FileIdInvalid from None
                else:
                    if unpacked[0] != 4:
                        media_type = BaseClient.MEDIA_TYPE_ID.get(unpacked[0], None)

                        if media_type:
                            raise FileIdInvalid("The file_id belongs to a {}".format(media_type))
                        else:
                            raise FileIdInvalid("Unknown media type: {}".format(unpacked[0]))

                    media = types.InputMediaDocument(
                        id=types.InputDocument(
                            id=unpacked[2],
                            access_hash=unpacked[3],
                            file_reference=b""
                        )
                    )

        if isinstance(media, InputMediaAudio):
            if os.path.exists(media.media):
                media = self.send(
                    functions.messages.UploadMedia(
                        peer=self.resolve_peer(chat_id),
                        media=types.InputMediaUploadedDocument(
                            mime_type=mimetypes.types_map.get("." + media.media.split(".")[-1], "audio/mpeg"),
                            file=self.save_file(media.media),
                            attributes=[
                                types.DocumentAttributeAudio(
                                    duration=media.duration,
                                    performer=media.performer,
                                    title=media.title
                                ),
                                types.DocumentAttributeFilename(os.path.basename(media.media))
                            ]
                        )
                    )
                )

                media = types.InputMediaDocument(
                    id=types.InputDocument(
                        id=media.document.id,
                        access_hash=media.document.access_hash,
                        file_reference=b""
                    )
                )
            elif media.media.startswith("http"):
                media = types.InputMediaDocumentExternal(
                    url=media.media
                )
            else:
                try:
                    decoded = utils.decode(media.media)
                    fmt = "<iiqqqqi" if len(decoded) > 24 else "<iiqq"
                    unpacked = struct.unpack(fmt, decoded)
                except (AssertionError, binascii.Error, struct.error):
                    raise FileIdInvalid from None
                else:
                    if unpacked[0] != 9:
                        media_type = BaseClient.MEDIA_TYPE_ID.get(unpacked[0], None)

                        if media_type:
                            raise FileIdInvalid("The file_id belongs to a {}".format(media_type))
                        else:
                            raise FileIdInvalid("Unknown media type: {}".format(unpacked[0]))

                    media = types.InputMediaDocument(
                        id=types.InputDocument(
                            id=unpacked[2],
                            access_hash=unpacked[3],
                            file_reference=b""
                        )
                    )

        if isinstance(media, InputMediaAnimation):
            if os.path.exists(media.media):
                media = self.send(
                    functions.messages.UploadMedia(
                        peer=self.resolve_peer(chat_id),
                        media=types.InputMediaUploadedDocument(
                            mime_type=mimetypes.types_map[".mp4"],
                            file=self.save_file(media.media),
                            attributes=[
                                types.DocumentAttributeVideo(
                                    supports_streaming=True,
                                    duration=media.duration,
                                    w=media.width,
                                    h=media.height
                                ),
                                types.DocumentAttributeFilename(os.path.basename(media.media)),
                                types.DocumentAttributeAnimated()
                            ]
                        )
                    )
                )

                media = types.InputMediaDocument(
                    id=types.InputDocument(
                        id=media.document.id,
                        access_hash=media.document.access_hash,
                        file_reference=b""
                    )
                )
            elif media.media.startswith("http"):
                media = types.InputMediaDocumentExternal(
                    url=media.media
                )
            else:
                try:
                    decoded = utils.decode(media.media)
                    fmt = "<iiqqqqi" if len(decoded) > 24 else "<iiqq"
                    unpacked = struct.unpack(fmt, decoded)
                except (AssertionError, binascii.Error, struct.error):
                    raise FileIdInvalid from None
                else:
                    if unpacked[0] != 10:
                        media_type = BaseClient.MEDIA_TYPE_ID.get(unpacked[0], None)

                        if media_type:
                            raise FileIdInvalid("The file_id belongs to a {}".format(media_type))
                        else:
                            raise FileIdInvalid("Unknown media type: {}".format(unpacked[0]))

                    media = types.InputMediaDocument(
                        id=types.InputDocument(
                            id=unpacked[2],
                            access_hash=unpacked[3],
                            file_reference=b""
                        )
                    )

        if isinstance(media, InputMediaDocument):
            if os.path.exists(media.media):
                media = self.send(
                    functions.messages.UploadMedia(
                        peer=self.resolve_peer(chat_id),
                        media=types.InputMediaUploadedDocument(
                            mime_type=mimetypes.types_map.get("." + media.media.split(".")[-1], "text/plain"),
                            file=self.save_file(media.media),
                            attributes=[
                                types.DocumentAttributeFilename(os.path.basename(media.media))
                            ]
                        )
                    )
                )

                media = types.InputMediaDocument(
                    id=types.InputDocument(
                        id=media.document.id,
                        access_hash=media.document.access_hash,
                        file_reference=b""
                    )
                )
            elif media.media.startswith("http"):
                media = types.InputMediaDocumentExternal(
                    url=media.media
                )
            else:
                try:
                    decoded = utils.decode(media.media)
                    fmt = "<iiqqqqi" if len(decoded) > 24 else "<iiqq"
                    unpacked = struct.unpack(fmt, decoded)
                except (AssertionError, binascii.Error, struct.error):
                    raise FileIdInvalid from None
                else:
                    if unpacked[0] not in (5, 10):
                        media_type = BaseClient.MEDIA_TYPE_ID.get(unpacked[0], None)

                        if media_type:
                            raise FileIdInvalid("The file_id belongs to a {}".format(media_type))
                        else:
                            raise FileIdInvalid("Unknown media type: {}".format(unpacked[0]))

                    media = types.InputMediaDocument(
                        id=types.InputDocument(
                            id=unpacked[2],
                            access_hash=unpacked[3],
                            file_reference=b""
                        )
                    )

        r = self.send(
            functions.messages.EditMessage(
                peer=self.resolve_peer(chat_id),
                id=message_id,
                reply_markup=reply_markup.write() if reply_markup else None,
                media=media,
                **style.parse(caption)
            )
        )

        for i in r.updates:
            if isinstance(i, (types.UpdateEditMessage, types.UpdateEditChannelMessage)):
                return pyrogram.Message._parse(
                    self, i.message,
                    {i.id: i for i in r.users},
                    {i.id: i for i in r.chats}
                )