stickertopic插件（贴纸转图片）写好了 (#61)

Co-authored-by: TNTcraftHIM <TNTcraftHIM@users.noreply.github.com>

list.json

@@ -319,6 +319,16 @@
             "supported": true,
             "des-short": "光速发Aff信息",
             "des": "在别人要打算买机场的时候光速发出提前准备好的Aff信息与链接~ （尽量用短链接哦）。命令：aff。"
+        },
+        {
+            "name": "stickertopic",
+            "version": "1.0",
+            "section": "chat",
+            "maintainer": "TNTcraftHIM",
+            "size": "3.6 kb",
+            "supported": true,
+            "des-short": "贴纸转图片",
+            "des": "把别人发的贴纸转换成图片（只支持静态）。命令：pic。"
         }
     ]
 }

stickertopic.py

@@ -0,0 +1,110 @@
+from time import sleep
+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
+from random import random
+
+
+@listener(outgoing=True, command="pic",
+          description="将你回复的静态贴纸转换为图片")
+async def stickertopic(context):
+    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
+    await context.edit("开始转换...\n███30%")
+    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("正在转换...\n██████60%")
+            await bot.download_file(message.media.document, photo)
+            if (DocumentAttributeFilename(file_name='sticker.webp') in
+                    message.media.document.attributes):
+                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")
+            for _ in range(len(message.media.document.attributes)):
+                try:
+                    break
+                except:
+                    pass
+            custom_emoji = True
+            animated = True
+            photo = 1
+        else:
+            await context.edit("出错了呜呜呜 ~ 目标不是贴纸 。")
+            sleep(2)
+            await context.delete()
+            return
+    else:
+        await context.edit("出错了呜呜呜 ~ 目标不是贴纸 。")
+        sleep(2)
+        await context.delete()
+        return
+
+    if photo:
+        if not custom_emoji:
+            await context.edit("出错了呜呜呜 ~ 目标不是贴纸 。")
+            sleep(2)
+            await context.delete()
+            return
+
+        if not animated:
+            await context.edit("正在转换...\n█████████90%")
+            image = await resize_image(photo)
+            filename = "sticker"+str(random())+".png"
+            image.save(filename, "PNG")
+        else:
+            await context.edit("出错了呜呜呜 ~ 目标不是**静态**贴纸 。")
+            sleep(2)
+            await context.delete()
+            return
+        await context.edit("正在上传...\n██████████99%")
+        await bot.send_file(context.chat_id,filename)
+        try:
+            await context.delete()
+        except:
+            pass
+        try:
+            remove(filename)
+        except:
+            pass
+        try:
+            remove("AnimatedSticker.tgs")
+        except:
+            pass
+
+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