somebot/modules/WSConvertWebp.py

   1 # Mattermost Bot.
   2 #  Copyright (c) 2016-2020 by Someone <someone@somenet.org> (aka. Jan Vales <jan@jvales.net>)
   3 #  published under MIT-License
   4
   5 import inspect
   6 import json
   7 import tempfile
   8 from PIL import Image
   9
  10
  11 from AbstractWSHandler import *
  12 class WSConvertWebp(AbstractWSHandler):
  13     NAME = "convertwebp"
  14
  15     def on_WS_EVENT(self, data):
  16         # no longer needed, as its checked on registration
  17         if data["event"] != "posted":
  18             return False
  19
  20         post = json.loads(data["data"]["post"])
  21
  22         if not "metadata" in post or not "files" in post["metadata"]:
  23             return False
  24
  25         with tempfile.TemporaryDirectory() as tmpdirname:
  26             tempfilenames = []
  27             for mmfile in post["metadata"]["files"]:
  28                 if mmfile["mime_type"] == "image/webp":
  29                     res = self.bot.api.get_file(mmfile["id"])
  30                     open(tmpdirname+"/"+mmfile["id"]+".webp", 'wb').write(res.content)
  31                     image = Image.open(tmpdirname+"/"+mmfile["id"]+".webp").convert("RGB")
  32                     image.save(tmpdirname+"/"+mmfile["id"]+".png","png")
  33                     tempfilenames.append(tmpdirname+"/"+mmfile["id"]+".png")
  34
  35             if len(tempfilenames):
  36                 root_id = post["id"]
  37                 if post["root_id"] != "":
  38                     root_id = post["root_id"]
  39                 self.bot.api.create_post(post['channel_id'], "Let me convert that for you", props={"from_webhook":"true"}, filepaths=tempfilenames, root_id=root_id)
  40                 return True