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import io
import os
import logging
import traceback
from PIL import Image, ExifTags
import boto3
from telegram import Update
from telegram.constants import ParseMode
from telegram.ext import Application, CommandHandler, ContextTypes, MessageHandler, filters
from peewee import *
from uuid import uuid4
from datetime import datetime
import json
import sys
import httpx
if os.getenv("DB_DRIVER") == "psql":
db = PostgresqlDatabase(os.getenv("DB_NAME"), user=os.getenv("DB_USER"), password=os.getenv("DB_PASS"),
host=os.getenv("DB_HOST"), port=os.getenv("DB_PORT"))
elif os.getenv("DB_DRIVER") == "sqlite3":
db = SqliteDatabase("database/photos.db")
else:
print("No DB_DRIVER specified")
sys.exit(1)
db.connect(reuse_if_open=True)
class BaseModel(Model):
class Meta:
database = db
class Photo(BaseModel):
guid = CharField(unique=True, primary_key=True)
fileId = CharField(max_length=256)
width = IntegerField()
height = IntegerField()
ratio = FloatField()
orientation = CharField(max_length=128)
path = CharField(max_length=256)
caption = CharField(max_length=256)
alt = CharField(max_length=256)
model = CharField(max_length=256, default="")
createdAt = DateTimeField()
uploadedAt = DateTimeField()
with db.connection_context():
db.create_tables([Photo])
logging.basicConfig(
format="%(asctime)s - %(name)s - %(levelname)s - %(message)s", level=logging.INFO
)
logger = logging.getLogger(__name__)
async def start(update: Update, context: ContextTypes.DEFAULT_TYPE) -> None:
await update.message.reply_text("This is a bot to output image in square shape")
bucket_name = "pixel-jinwei-me"
cf_account_id = os.getenv("CF_ACCOUNT_ID")
aws_access_key_id = os.getenv("CF_R2_KEY_ID")
aws_secret_access_key = os.getenv("CF_R2_ACCESS_KEY_SECRET")
cloudflare_pages_deploy_hook_url = os.getenv("CLOUDFLARE_PAGES_DEPLOY_HOOK_URL")
def write_json() -> bool:
with db.connection_context():
photos = Photo.select()
results = []
for photo in photos:
results.append({
"guid": photo.guid,
"fileId": photo.fileId,
"width": photo.width,
"height": photo.height,
"ratio": photo.ratio,
"orientation": photo.orientation,
"path": photo.path,
"caption": photo.caption,
"alt": photo.alt,
"model": photo.model,
"createdAt": photo.createdAt.strftime("%Y-%m-%dT%H:%M:%S.000Z"),
"uploadedAt": photo.uploadedAt.strftime("%Y-%m-%dT%H:%M:%S.000Z")
})
results.sort(key=lambda x: x["uploadedAt"], reverse=True)
upload_to_s3("photos.json", json.dumps(results).encode("utf-8"))
return True
def upload_to_s3(key_name: str, file: bytes):
endpoint_ca_central = "https://{}.r2.cloudflarestorage.com".format(cf_account_id)
client = boto3.client("s3",
region_name="auto",
endpoint_url=endpoint_ca_central,
aws_access_key_id=aws_access_key_id,
aws_secret_access_key=aws_secret_access_key)
response = client.list_buckets()
buckets = [b["Name"] for b in response['Buckets']]
if bucket_name not in buckets:
print("{} doesn't exist".format(bucket_name))
print('Existing buckets:')
for bucket in response['Buckets']:
print(f' {bucket["Name"]}')
return False
response = client.put_object(Body=file, Bucket=bucket_name, Key=key_name, ContentType="application/json")
status = response["ResponseMetadata"]["HTTPStatusCode"]
if status == 200:
print("upload {} to {} succeed".format(key_name, bucket_name))
return True
else:
print("upload {} to {} failed, status: {}".format(key_name, bucket_name, status))
return False
async def process(update: Update, context: ContextTypes.DEFAULT_TYPE) -> None:
chat_id = update.message.chat_id
if update.message.document is not None:
names = update.message.document.file_name.split(".")
file_ext = names[1]
filename = names[0]
if str.upper(file_ext) not in ("JPG", "JPEG", "PNG"):
await context.bot.send_message(chat_id, "Image extension `{}` not supported".format(file_ext),
parse_mode=ParseMode.MARKDOWN_V2)
return
file = await update.message.effective_attachment.get_file()
else:
return
caption = update.effective_message.caption
await context.bot.send_message(chat_id, "Processing `{}`".format(filename), parse_mode=ParseMode.MARKDOWN_V2)
img = io.BytesIO()
await file.download_to_memory(img)
try:
im = Image.open(img)
exif = im.getexif()
camera_model = ""
shot_datetime = None
if exif:
for key, val in exif.items():
if key in ExifTags.TAGS:
if ExifTags.TAGS[key] == "Model":
camera_model = val
elif ExifTags.TAGS[key] == "DateTime":
shot_datetime = datetime.strptime(val, "%Y:%m:%d %H:%M:%S")
output = io.BytesIO()
im.save(output, format="webp", lossless=False, quality=80)
now = datetime.now().strftime("%Y-%m-%d-%H-%M-%S")
key_name = "{}-{}.webp".format(now, filename)
with db.connection_context():
photo = Photo.create(guid=str.upper(str(uuid4())),
fileId=key_name,
width=im.width,
height=im.height,
ratio=im.width / im.height,
orientation="landscape" if im.width > im.height else "portrait",
path="https://pixelstatic.jinwei.me/{}".format(key_name),
caption=caption,
alt="",
model=camera_model,
createdAt=shot_datetime if shot_datetime else datetime.now(),
uploadedAt=datetime.now())
output.seek(0)
upload_to_s3(photo.fileId, output.read())
await rebuild(update, context)
except Exception:
await update.message.reply_markdown_v2(text="Error:\n```{}```".format(traceback.format_exc()))
async def rebuild(update: Update, context: ContextTypes.DEFAULT_TYPE) -> None:
write_json()
response = httpx.post(cloudflare_pages_deploy_hook_url)
if response.status_code == 200:
await update.message.reply_markdown_v2(text="trigger deploy succeed")
else:
await update.message.reply_markdown_v2("trigger deploy failed, status: {}".format(response.status_code))
def main() -> None:
tg_token = os.getenv("TG_TOKEN")
application = Application.builder().token(tg_token).build()
application.add_handler(CommandHandler("start", start))
application.add_handler(CommandHandler("rebuild", rebuild))
application.add_handler(MessageHandler(filters.ATTACHMENT & ~filters.COMMAND, process))
application.run_polling()
if __name__ == "__main__":
main()
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