Spaces:
Runtime error
Runtime error
File size: 7,677 Bytes
664a316 | 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 | """
Database Module for User Management
SQLite database for storing user credentials and sessions
"""
import sqlite3
import os
from pathlib import Path
from datetime import datetime
# Database path
DB_DIR = Path(__file__).parent.parent / 'data'
DB_DIR.mkdir(exist_ok=True)
DB_PATH = DB_DIR / 'users.db'
def init_database():
"""
Initialize database and create users table if not exists
"""
conn = sqlite3.connect(DB_PATH)
cursor = conn.cursor()
# Create users table
cursor.execute('''
CREATE TABLE IF NOT EXISTS users (
id INTEGER PRIMARY KEY AUTOINCREMENT,
username TEXT UNIQUE NOT NULL,
email TEXT UNIQUE NOT NULL,
password_hash TEXT NOT NULL,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
last_login TIMESTAMP
)
''')
# Create sessions table
cursor.execute('''
CREATE TABLE IF NOT EXISTS sessions (
id INTEGER PRIMARY KEY AUTOINCREMENT,
user_id INTEGER NOT NULL,
session_token TEXT UNIQUE NOT NULL,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
expires_at TIMESTAMP,
FOREIGN KEY (user_id) REFERENCES users(id)
)
''')
# Create predictions_history table (optional, for tracking user predictions)
cursor.execute('''
CREATE TABLE IF NOT EXISTS predictions_history (
id INTEGER PRIMARY KEY AUTOINCREMENT,
user_id INTEGER NOT NULL,
latitude REAL NOT NULL,
longitude REAL NOT NULL,
flood_probability REAL NOT NULL,
risk_level TEXT NOT NULL,
prediction_date TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
email_sent BOOLEAN DEFAULT 0,
FOREIGN KEY (user_id) REFERENCES users(id)
)
''')
conn.commit()
conn.close()
print(f"✓ Database initialized at {DB_PATH}")
def get_connection():
"""
Get database connection
"""
return sqlite3.connect(DB_PATH)
def create_user(username, email, password_hash):
"""
Create a new user
Args:
username (str): Username
email (str): Email address
password_hash (str): Hashed password
Returns:
tuple: (success: bool, message: str, user_id: int or None)
"""
try:
conn = get_connection()
cursor = conn.cursor()
# Check if username already exists
cursor.execute('SELECT id FROM users WHERE username = ?', (username,))
if cursor.fetchone():
conn.close()
return (False, 'Username already exists', None)
# Check if email already exists
cursor.execute('SELECT id FROM users WHERE email = ?', (email,))
if cursor.fetchone():
conn.close()
return (False, 'Email already exists', None)
# Insert new user
cursor.execute('''
INSERT INTO users (username, email, password_hash)
VALUES (?, ?, ?)
''', (username, email, password_hash))
user_id = cursor.lastrowid
conn.commit()
conn.close()
return (True, 'User created successfully', user_id)
except Exception as e:
return (False, f'Database error: {str(e)}', None)
def get_user_by_username(username):
"""
Get user by username
Args:
username (str): Username
Returns:
dict or None: User data or None if not found
"""
try:
conn = get_connection()
conn.row_factory = sqlite3.Row
cursor = conn.cursor()
cursor.execute('SELECT * FROM users WHERE username = ?', (username,))
row = cursor.fetchone()
conn.close()
if row:
return dict(row)
return None
except Exception as e:
print(f"Error fetching user: {e}")
return None
def get_user_by_email(email):
"""
Get user by email
Args:
email (str): Email address
Returns:
dict or None: User data or None if not found
"""
try:
conn = get_connection()
conn.row_factory = sqlite3.Row
cursor = conn.cursor()
cursor.execute('SELECT * FROM users WHERE email = ?', (email,))
row = cursor.fetchone()
conn.close()
if row:
return dict(row)
return None
except Exception as e:
print(f"Error fetching user: {e}")
return None
def get_user_by_id(user_id):
"""
Get user by ID
Args:
user_id (int): User ID
Returns:
dict or None: User data or None if not found
"""
try:
conn = get_connection()
conn.row_factory = sqlite3.Row
cursor = conn.cursor()
cursor.execute('SELECT * FROM users WHERE id = ?', (user_id,))
row = cursor.fetchone()
conn.close()
if row:
return dict(row)
return None
except Exception as e:
print(f"Error fetching user: {e}")
return None
def update_last_login(user_id):
"""
Update user's last login timestamp
Args:
user_id (int): User ID
"""
try:
conn = get_connection()
cursor = conn.cursor()
cursor.execute('''
UPDATE users
SET last_login = CURRENT_TIMESTAMP
WHERE id = ?
''', (user_id,))
conn.commit()
conn.close()
except Exception as e:
print(f"Error updating last login: {e}")
def save_prediction(user_id, latitude, longitude, flood_probability, risk_level, email_sent=False):
"""
Save prediction to history
Args:
user_id (int): User ID
latitude (float): Latitude
longitude (float): Longitude
flood_probability (float): Flood probability
risk_level (str): Risk level (LOW/MEDIUM/HIGH)
email_sent (bool): Whether email was sent
Returns:
int or None: Prediction ID or None if failed
"""
try:
conn = get_connection()
cursor = conn.cursor()
cursor.execute('''
INSERT INTO predictions_history
(user_id, latitude, longitude, flood_probability, risk_level, email_sent)
VALUES (?, ?, ?, ?, ?, ?)
''', (user_id, latitude, longitude, flood_probability, risk_level, email_sent))
prediction_id = cursor.lastrowid
conn.commit()
conn.close()
return prediction_id
except Exception as e:
print(f"Error saving prediction: {e}")
return None
def get_user_predictions(user_id, limit=50):
"""
Get user's prediction history
Args:
user_id (int): User ID
limit (int): Maximum number of records to return
Returns:
list: List of prediction records
"""
try:
conn = get_connection()
conn.row_factory = sqlite3.Row
cursor = conn.cursor()
cursor.execute('''
SELECT * FROM predictions_history
WHERE user_id = ?
ORDER BY prediction_date DESC
LIMIT ?
''', (user_id, limit))
rows = cursor.fetchall()
conn.close()
return [dict(row) for row in rows]
except Exception as e:
print(f"Error fetching predictions: {e}")
return []
# Initialize database on module import
if __name__ == "__main__":
init_database()
print("Database initialization complete!")
|