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import os
import threading
import time
from flask.helpers import url_for
import requests
import re
import sqlite3
from dotenv import load_dotenv
load_dotenv()
from flask import Flask, render_template, make_response, send_file
from flask_compress import Compress
from collections import defaultdict
from PIL import Image
from io import BytesIO
# Environment config
GDRIVE_FOLDER = os.environ["GDRIVE_FOLDER"]
GAPI_KEY = os.environ["GAPI_KEY"]
PORT = int(os.environ.get("PORT", 5000))
THUMBNAIL_DIR = "thumbnails"
DB_FILE = "data/sqlite.db"
ISO_DATE_REGEX = re.compile(r"^\d{4}-\d{2}-\d{2}")
AUTHOR = os.environ["AUTHOR"]
IG_LINK = os.environ.get("IG_LINK", None)
BASE_URL = os.environ["BASE_URL"]
# SQLite connection configuration per kerkour.com/sqlite-for-servers
_write_lock = threading.Lock()
def _configure_connection(conn):
conn.execute("PRAGMA journal_mode = WAL")
conn.execute("PRAGMA busy_timeout = 5000")
conn.execute("PRAGMA synchronous = NORMAL")
conn.execute("PRAGMA cache_size = 1000000000")
conn.execute("PRAGMA foreign_keys = true")
conn.execute("PRAGMA temp_store = memory")
def get_read_db():
conn = sqlite3.connect(DB_FILE)
_configure_connection(conn)
return conn
def get_write_db():
conn = sqlite3.connect(DB_FILE, isolation_level=None)
_configure_connection(conn)
return conn
# Initialize DB
def init_db():
os.makedirs(os.path.dirname(DB_FILE), exist_ok=True)
conn = get_write_db()
try:
conn.execute("""
CREATE TABLE IF NOT EXISTS files (
id TEXT PRIMARY KEY,
name TEXT,
description TEXT,
date TEXT,
thumbnail TEXT
) STRICT
""")
finally:
conn.close()
# Get image files from the given Google Drive folder (non-recursive)
def list_drive_files(folder_id):
url = "https://www.googleapis.com/drive/v3/files"
image_mime_types = {
"image/jpeg", "image/png", "image/webp", "image/gif",
"image/bmp", "image/tiff", "image/jpg"
}
params = {
"q": f"'{folder_id}' in parents and trashed = false",
"fields": "files(id, name, mimeType, createdTime, description)",
"key": GAPI_KEY,
}
resp = requests.get(url, params=params)
resp.raise_for_status()
files = resp.json().get("files", [])
return [f for f in files if f.get("mimeType") in image_mime_types]
# Download image and generate thumbnail
def download_and_create_thumbnail(file_id):
url = f"https://drive.google.com/uc?id={file_id}"
response = requests.get(url)
response.raise_for_status()
img = Image.open(BytesIO(response.content))
# Convert to RGB if image has alpha channel (RGBA or P)
if img.mode in ("RGBA", "P"):
img = img.convert("RGB")
img.thumbnail((400, 400))
path = os.path.join(THUMBNAIL_DIR, f"{file_id}.jpg")
img.save(path, format="JPEG")
return path
# Background thread to sync Drive files
def save_files_periodically():
while True:
try:
drive_files = list_drive_files(GDRIVE_FOLDER)
current_ids = set()
with _write_lock:
conn = get_write_db()
try:
conn.execute("BEGIN IMMEDIATE")
cur = conn.cursor()
for f in drive_files:
current_ids.add(f["id"])
date_match = ISO_DATE_REGEX.match(f["name"])
date = date_match.group(0) if date_match else f["createdTime"][:10]
cur.execute("SELECT description FROM files WHERE id = ?", (f["id"],))
row = cur.fetchone()
if row is None:
thumb_path = download_and_create_thumbnail(f["id"])
cur.execute("""
INSERT OR IGNORE INTO files (id, name, description, date, thumbnail)
VALUES (?, ?, ?, ?, ?)
""", (f["id"], f["name"], f.get("description", ""), date, thumb_path))
else:
existing_description = row[0] or ""
new_description = f.get("description", "")
if existing_description != new_description:
cur.execute("""
UPDATE files
SET name = ?, description = ?, date = ?
WHERE id = ?
""", (f["name"], new_description, date, f["id"]))
# Delete removed files
cur.execute("SELECT id, thumbnail FROM files")
all_local = cur.fetchall()
for file_id, thumb_path in all_local:
if file_id not in current_ids:
cur.execute("DELETE FROM files WHERE id = ?", (file_id,))
if os.path.exists(thumb_path):
os.remove(thumb_path)
conn.execute("COMMIT")
except Exception:
conn.execute("ROLLBACK")
raise
finally:
conn.close()
except Exception as e:
print("Error updating file list:", e)
time.sleep(60)
def create_app() -> Flask:
init_db()
os.makedirs(THUMBNAIL_DIR, exist_ok=True)
thread = threading.Thread(target=save_files_periodically, daemon=True)
thread.start()
app = Flask(__name__)
Compress(app)
return app
# Setup
app = create_app()
# Route: Gallery
@app.route("/")
def gallery():
conn = get_read_db()
try:
cur = conn.cursor()
cur.execute("SELECT id, name, description, date, thumbnail FROM files ORDER BY date DESC")
files = cur.fetchall()
finally:
conn.close()
grouped = defaultdict(list)
for file in files:
grouped[file[3]].append({
"id": file[0],
"name": file[1],
"description": file[2],
"thumbnail": file[4],
})
sorted_dates = sorted(grouped.keys(), reverse=True)
if len(files) > 0:
cover_img_path = url_for("serve_thumbnail", filename=files[0][4].split('/')[-1])
cover_img_url = BASE_URL + cover_img_path
else:
cover_img_url = None
return render_template("gallery.html",
grouped=grouped,
dates=sorted_dates,
author=AUTHOR,
ig_link=IG_LINK,
cover_img_url=cover_img_url,
base_url=BASE_URL,
)
@app.route("/thumbnails/<filename>")
def serve_thumbnail(filename):
path = os.path.join(THUMBNAIL_DIR, filename)
if not os.path.exists(path):
return "Not Found", 404
response = make_response(send_file(path))
response.headers["Cache-Control"] = "public, max-age=86400, stale-while-revalidate=604800"
return response
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