""" PagerMaid module to handle sticker collection. """

from os import remove
from urllib import request
from io import BytesIO
from telethon.tl.types import DocumentAttributeFilename, MessageMediaPhoto
from PIL import Image
from math import floor
from pagermaid import bot
from pagermaid.listener import listener


@listener(outgoing=True, command="sticker",
          description="收集图像/贴纸作为贴纸，指定表情符号以设置自定义表情符号。",
          parameters="<表情>")
async def sticker(context):
    """ Fetches images/stickers and add them to your pack. """
    user = await bot.get_me()
    if not user.username:
        user.username = user.first_name
    message = await context.get_reply_message()
    custom_emoji = False
    animated = False
    emoji = ""
    await context.edit("收集贴纸中 . . .")
    if message and message.media:
        if isinstance(message.media, MessageMediaPhoto):
            photo = BytesIO()
            photo = await bot.download_media(message.photo, photo)
        elif "image" in message.media.document.mime_type.split('/'):
            photo = BytesIO()
            await context.edit("下载图片中 . . .")
            await bot.download_file(message.media.document, photo)
            if (DocumentAttributeFilename(file_name='sticker.webp') in
                    message.media.document.attributes):
                emoji = message.media.document.attributes[1].alt
                custom_emoji = True
        elif (DocumentAttributeFilename(file_name='AnimatedSticker.tgs') in
              message.media.document.attributes):
            photo = BytesIO()
            await bot.download_file(message.media.document, "AnimatedSticker.tgs")
            emoji = message.media.document.attributes[1].alt
            custom_emoji = True
            animated = True
            photo = 1
        else:
            await context.edit("`出错了呜呜呜 ~ 不支持此文件类型。`")
            return
    else:
        await context.edit("`出错了呜呜呜 ~ 请回复带有图片/贴纸的消息。`")
        return

    if photo:
        split_strings = context.text.split()
        if not custom_emoji:
            emoji = "👀"
        pack = 1
        if len(split_strings) == 3:
            pack = split_strings[2]
            emoji = split_strings[1]
        elif len(split_strings) == 2:
            if split_strings[1].isnumeric():
                pack = int(split_strings[1])
            else:
                emoji = split_strings[1]

        pack_name = f"{user.username}_{pack}"
        pack_title = f"@{user.username} 的私藏 ({pack})"
        command = '/newpack'
        file = BytesIO()

        if not animated:
            await context.edit("调整图像大小中 . . .")
            image = await resize_image(photo)
            file.name = "sticker.png"
            image.save(file, "PNG")
        else:
            pack_name += "_animated"
            pack_title += " (animated)"
            command = '/newanimated'

        response = request.urlopen(
            request.Request(f'http://t.me/addstickers/{pack_name}'))
        http_response = response.read().decode("utf8").split('\n')

        if "  A <strong>Telegram</strong> user has created the <strong>Sticker&nbsp;Set</strong>." not in \
                http_response:
            async with bot.conversation('Stickers') as conversation:
                await conversation.send_message('/addsticker')
                await conversation.get_response()
                await bot.send_read_acknowledge(conversation.chat_id)
                await conversation.send_message(pack_name)
                chat_response = await conversation.get_response()
                while chat_response.text == "Whoa! That's probably enough stickers for one pack, give it a break. \
A pack can't have more than 120 stickers at the moment.":
                    pack += 1
                    pack_name = f"{user.username}_{pack}"
                    pack_title = f"@{user.username} 的私藏 ({pack})"
                    await context.edit("Switching to pack " + str(pack) +
                                       " since previous pack is full . . .")
                    await conversation.send_message(pack_name)
                    chat_response = await conversation.get_response()
                    if chat_response.text == "Invalid pack selected.":
                        await add_sticker(conversation, command, pack_title, pack_name, animated, message,
                                          context, file, emoji)
                        await context.edit(
                            f"Sticker has been added to [this](t.me/addstickers/{pack_name}) alternative pack.",
                            parse_mode='md')
                        return
                await upload_sticker(animated, message, context, file, conversation)
                await conversation.get_response()
                await conversation.send_message(emoji)
                await bot.send_read_acknowledge(conversation.chat_id)
                await conversation.get_response()
                await conversation.send_message('/done')
                await conversation.get_response()
                await bot.send_read_acknowledge(conversation.chat_id)
        else:
            await context.edit("贴纸包不存在，正在创建 . . .")
            async with bot.conversation('Stickers') as conversation:
                await add_sticker(conversation, command, pack_title, pack_name, animated, message,
                                  context, file, emoji)

        await context.edit(
            f"这张图片/贴纸已经被添加到 [这个](t.me/addstickers/{pack_name}) 贴纸包。",
            parse_mode='md')


async def add_sticker(conversation, command, pack_title, pack_name, animated, message, context, file, emoji):
    await conversation.send_message(command)
    await conversation.get_response()
    await bot.send_read_acknowledge(conversation.chat_id)
    await conversation.send_message(pack_title)
    await conversation.get_response()
    await bot.send_read_acknowledge(conversation.chat_id)
    await upload_sticker(animated, message, context, file, conversation)
    await conversation.get_response()
    await conversation.send_message(emoji)
    await bot.send_read_acknowledge(conversation.chat_id)
    await conversation.get_response()
    await conversation.send_message("/publish")
    if animated:
        await conversation.get_response()
        await conversation.send_message(f"<{pack_title}>")
    await conversation.get_response()
    await bot.send_read_acknowledge(conversation.chat_id)
    await conversation.send_message("/skip")
    await bot.send_read_acknowledge(conversation.chat_id)
    await conversation.get_response()
    await conversation.send_message(pack_name)
    await bot.send_read_acknowledge(conversation.chat_id)
    await conversation.get_response()
    await bot.send_read_acknowledge(conversation.chat_id)


async def upload_sticker(animated, message, context, file, conversation):
    if animated:
        await context.edit("上传动图中 . . .")
        await conversation.send_file("AnimatedSticker.tgs", force_document=True)
        remove("AnimatedSticker.tgs")
    else:
        file.seek(0)
        await context.edit("上传图片中 . . .")
        await conversation.send_file(file, force_document=True)


async def resize_image(photo):
    image = Image.open(photo)
    maxsize = (512, 512)
    if (image.width and image.height) < 512:
        size1 = image.width
        size2 = image.height
        if image.width > image.height:
            scale = 512 / size1
            size1new = 512
            size2new = size2 * scale
        else:
            scale = 512 / size2
            size1new = size1 * scale
            size2new = 512
        size1new = floor(size1new)
        size2new = floor(size2new)
        size_new = (size1new, size2new)
        image = image.resize(size_new)
    else:
        image.thumbnail(maxsize)

    return image