Spaces:
Running
Running
File size: 14,993 Bytes
5d93cab |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 |
import sqlite3
import json
import os
import uuid
from datetime import datetime
from typing import List, Dict, Optional, Union
from pathlib import Path
import shutil
from enum import Enum
import threading
class ImageType(Enum):
FEATURED = "featured"
POST_CONTENT = "post_content"
GALLERY = "gallery"
class FlexibleBlogDatabase:
def __init__(self, db_path: str = "blog.db", media_dir: str = "blog_media"):
self.db_path = db_path
self.media_dir = Path(media_dir)
self.media_dir.mkdir(exist_ok=True)
self._lock = threading.Lock()
self.init_database()
def _get_connection(self):
"""Get a database connection with proper settings"""
conn = sqlite3.connect(self.db_path, timeout=20.0)
conn.execute("PRAGMA journal_mode=WAL") # Better for concurrent access
conn.execute("PRAGMA busy_timeout=20000") # 20 second timeout
return conn
def init_database(self):
"""Initialize the flexible blog database with enhanced image support"""
with self._lock:
conn = self._get_connection()
try:
cursor = conn.cursor()
# Blog posts table
cursor.execute('''
CREATE TABLE IF NOT EXISTS blog_posts (
id INTEGER PRIMARY KEY AUTOINCREMENT,
title TEXT NOT NULL,
content TEXT NOT NULL,
author TEXT DEFAULT 'Admin',
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
published BOOLEAN DEFAULT 1,
tags TEXT DEFAULT '[]',
featured_image_id INTEGER,
FOREIGN KEY (featured_image_id) REFERENCES images (id)
)
''')
# Enhanced images table
cursor.execute('''
CREATE TABLE IF NOT EXISTS images (
id INTEGER PRIMARY KEY AUTOINCREMENT,
filename TEXT NOT NULL,
original_filename TEXT NOT NULL,
file_path TEXT NOT NULL,
file_size INTEGER,
mime_type TEXT,
alt_text TEXT DEFAULT '',
caption TEXT DEFAULT '',
width INTEGER,
height INTEGER,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
)
''')
# Enhanced junction table for post images
cursor.execute('''
CREATE TABLE IF NOT EXISTS blog_post_images (
id INTEGER PRIMARY KEY AUTOINCREMENT,
blog_post_id INTEGER,
image_id INTEGER,
image_type TEXT DEFAULT 'post_content',
image_order INTEGER DEFAULT 0,
position_in_content INTEGER,
FOREIGN KEY (blog_post_id) REFERENCES blog_posts (id),
FOREIGN KEY (image_id) REFERENCES images (id)
)
''')
conn.commit()
finally:
conn.close()
def save_image(self, file_path: str, alt_text: str = "", caption: str = "",
original_filename: str = "") -> int:
"""Save an image file and return its database ID"""
if not os.path.exists(file_path):
raise FileNotFoundError(f"Image file not found: {file_path}")
# Generate unique filename
file_extension = Path(file_path).suffix
unique_filename = f"{uuid.uuid4()}{file_extension}"
destination_path = self.media_dir / unique_filename
# Copy file to media directory
shutil.copy2(file_path, destination_path)
# Get file info
file_size = os.path.getsize(destination_path)
mime_type = self._get_mime_type(file_extension)
# Get image dimensions (optional - requires PIL)
width, height = self._get_image_dimensions(destination_path)
# Save to database with lock
with self._lock:
conn = self._get_connection()
try:
cursor = conn.cursor()
cursor.execute('''
INSERT INTO images (filename, original_filename, file_path, file_size,
mime_type, alt_text, caption, width, height)
VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)
''', (unique_filename, original_filename or Path(file_path).name,
str(destination_path), file_size, mime_type, alt_text, caption, width, height))
image_id = cursor.lastrowid
conn.commit()
return image_id
finally:
conn.close()
def create_blog_post(self, title: str, content: str, author: str = "Admin",
tags: List[str] = None) -> int:
"""Create a basic blog post without images"""
with self._lock:
conn = self._get_connection()
try:
cursor = conn.cursor()
tags_json = json.dumps(tags or [])
cursor.execute('''
INSERT INTO blog_posts (title, content, author, tags)
VALUES (?, ?, ?, ?)
''', (title, content, author, tags_json))
blog_post_id = cursor.lastrowid
conn.commit()
return blog_post_id
finally:
conn.close()
def add_featured_image(self, blog_post_id: int, image_path: str,
alt_text: str = "", caption: str = "") -> int:
"""Add a featured image to an existing blog post"""
# Save the image first
image_id = self.save_image(image_path, alt_text, caption)
# Update blog post with featured image
with self._lock:
conn = self._get_connection()
try:
cursor = conn.cursor()
cursor.execute('''
UPDATE blog_posts SET featured_image_id = ? WHERE id = ?
''', (image_id, blog_post_id))
conn.commit()
return image_id
finally:
conn.close()
def add_post_images(self, blog_post_id: int, image_configs: List[Dict]) -> List[int]:
"""Add multiple post images to a blog post"""
image_ids = []
# Save all images first
for config in image_configs:
image_id = self.save_image(
config["file_path"],
config.get("alt_text", ""),
config.get("caption", "")
)
image_ids.append((image_id, config))
# Link all images to blog post in one transaction
with self._lock:
conn = self._get_connection()
try:
cursor = conn.cursor()
for image_id, config in image_ids:
cursor.execute('''
INSERT INTO blog_post_images
(blog_post_id, image_id, image_type, image_order, position_in_content)
VALUES (?, ?, ?, ?, ?)
''', (
blog_post_id,
image_id,
ImageType.POST_CONTENT.value,
config.get("order", 0),
config.get("position")
))
conn.commit()
return [img_id for img_id, _ in image_ids]
finally:
conn.close()
def create_complete_blog_post(self, title: str, content: str, author: str = "Admin",
tags: List[str] = None, featured_image: Dict = None,
post_images: List[Dict] = None) -> int:
"""Create a complete blog post with all images in one go"""
# Create the blog post first
blog_post_id = self.create_blog_post(title, content, author, tags)
# Add featured image if provided
if featured_image:
self.add_featured_image(
blog_post_id,
featured_image["file_path"],
featured_image.get("alt_text", ""),
featured_image.get("caption", "")
)
# Add post images if provided
if post_images:
self.add_post_images(blog_post_id, post_images)
return blog_post_id
def get_blog_post_complete(self, post_id: int) -> Optional[Dict]:
"""Get a complete blog post with all associated images"""
with self._lock:
conn = self._get_connection()
try:
cursor = conn.cursor()
# Get blog post with featured image
cursor.execute('''
SELECT bp.id, bp.title, bp.content, bp.author, bp.created_at,
bp.published, bp.tags, bp.featured_image_id,
fi.filename as featured_filename, fi.file_path as featured_path,
fi.alt_text as featured_alt, fi.caption as featured_caption,
fi.width as featured_width, fi.height as featured_height
FROM blog_posts bp
LEFT JOIN images fi ON bp.featured_image_id = fi.id
WHERE bp.id = ?
''', (post_id,))
row = cursor.fetchone()
if not row:
return None
# Get post content images
cursor.execute('''
SELECT i.id, i.filename, i.file_path, i.alt_text, i.caption,
i.mime_type, i.width, i.height, bpi.image_order,
bpi.position_in_content, bpi.image_type
FROM blog_post_images bpi
JOIN images i ON bpi.image_id = i.id
WHERE bpi.blog_post_id = ? AND bpi.image_type = ?
ORDER BY bpi.image_order
''', (post_id, ImageType.POST_CONTENT.value))
post_images = cursor.fetchall()
# Build result
result = {
'id': row[0],
'title': row[1],
'content': row[2],
'author': row[3],
'created_at': row[4],
'published': row[5],
'tags': json.loads(row[6]),
'featured_image': {
'filename': row[8],
'file_path': row[9],
'alt_text': row[10],
'caption': row[11],
'width': row[12],
'height': row[13],
'url': self.get_image_url(row[8]) if row[8] else None
} if row[7] else None,
'post_images': [
{
'id': img[0],
'filename': img[1],
'file_path': img[2],
'alt_text': img[3],
'caption': img[4],
'mime_type': img[5],
'width': img[6],
'height': img[7],
'order': img[8],
'position': img[9],
'type': img[10],
'url': self.get_image_url(img[1])
}
for img in post_images
]
}
return result
finally:
conn.close()
def _get_mime_type(self, file_extension: str) -> str:
"""Get MIME type based on file extension"""
mime_types = {
'.jpg': 'image/jpeg',
'.jpeg': 'image/jpeg',
'.png': 'image/png',
'.gif': 'image/gif',
'.webp': 'image/webp',
'.svg': 'image/svg+xml'
}
return mime_types.get(file_extension.lower(), 'application/octet-stream')
def _get_image_dimensions(self, image_path: str) -> tuple:
"""Get image dimensions (requires PIL/Pillow)"""
try:
from PIL import Image
with Image.open(image_path) as img:
return img.size
except ImportError:
return None, None
except Exception:
return None, None
def get_image_url(self, image_filename: str) -> str:
"""Generate URL for serving images"""
return f"/media/{image_filename}"
def list_recent_posts_with_images(self, limit: int = 10) -> List[Dict]:
"""Get recent blog posts with image counts"""
with self._lock:
conn = self._get_connection()
try:
cursor = conn.cursor()
cursor.execute('''
SELECT bp.id, bp.title, bp.author, bp.created_at, bp.published, bp.tags,
bp.featured_image_id,
fi.filename as featured_filename,
COUNT(bpi.id) as post_image_count
FROM blog_posts bp
LEFT JOIN images fi ON bp.featured_image_id = fi.id
LEFT JOIN blog_post_images bpi ON bp.id = bpi.blog_post_id
WHERE bp.published = 1
GROUP BY bp.id
ORDER BY bp.created_at DESC
LIMIT ?
''', (limit,))
rows = cursor.fetchall()
return [
{
'id': row[0],
'title': row[1],
'author': row[2],
'created_at': row[3],
'published': row[4],
'tags': json.loads(row[5]),
'has_featured_image': row[6] is not None,
'featured_image_url': self.get_image_url(row[7]) if row[7] else None,
'post_image_count': row[8]
}
for row in rows
]
finally:
conn.close() |