app.py

from flask import Flask
from flask import request
from flask import render_template
from flask import send_from_directory
import os
import glob
import sys
import binascii
import argparse


app = Flask("Image Gallery")
app.config['IMAGE_EXTS'] = [".png", ".jpg", ".jpeg", ".gif", ".tiff"]
app.secret_key = b'B\x13\xac\xb1c\xd9\x03hD\xa2\xcc\xba'
app.static_folder = 'static'
app.config['IMAGE_DIR'] = './uploads'


def encode(x):
    return binascii.hexlify(x.encode('utf-8')).decode()

def decode(x):
    return binascii.unhexlify(x.encode('utf-8')).decode()

@app.route('/')
def home():
    root_dir = app.config['IMAGE_DIR']
    image_paths = []
    
    image_files = []
    for root, dirs, files in os.walk(root_dir):
        for file in files:
            if any(file.endswith(ext) for ext in app.config['IMAGE_EXTS']):
                image_files.append((os.path.join(root, file), os.path.getmtime(os.path.join(root, file))))
    
    sorted_image_files = sorted(image_files, key=lambda x: x[1], reverse=True)
    
    for file, _ in sorted_image_files:
        image_paths.append(encode(file))
    
    return render_template('index.html', paths=image_paths)

@app.route('/cdn/<path:filepath>')
def download_file(filepath):
    dir,filename = os.path.split(decode(filepath))
    return send_from_directory(dir, filename, as_attachment=False)


if __name__=="__main__":
    parser = argparse.ArgumentParser('Usage: %prog [options]')
    parser.add_argument('-l', '--listen', dest='host', default='127.0.0.1', \
                                    help='address to listen on [127.0.0.1]')
    parser.add_argument('-p', '--port', metavar='PORT', dest='port', type=int, \
                                default=5001, help='port to listen on [5001]')
    args = parser.parse_args()
    app.run(host=args.host, port=args.port, debug=True)