Initial commit: Real Estate Registry app

services/auth_service.py

@@ -0,0 +1,40 @@
+import sqlite3
+import hashlib
+import secrets
+
+def hash_password(password: str) -> str:
+    salt = secrets.token_hex(16)
+    hashed = hashlib.pbkdf2_hmac('sha256', password.encode('utf-8'), salt.encode('utf-8'), 100000).hex()
+    return f"{salt}${hashed}"
+
+def verify_password(stored_password: str, provided_password: str) -> bool:
+    try:
+        salt, stored_hash = stored_password.split('$')
+        hashed = hashlib.pbkdf2_hmac('sha256', provided_password.encode('utf-8'), salt.encode('utf-8'), 100000).hex()
+        return hashed == stored_hash
+    except Exception:
+        return False
+
+def get_user_by_username(username: str):
+    from database.connection import get_db
+    with get_db() as conn:
+        cursor = conn.execute("SELECT * FROM users WHERE username = ?", (username,))
+        return cursor.fetchone()
+
+def create_user(username: str, password: str):
+    from database.connection import get_db
+    with get_db() as conn:
+        hashed = hash_password(password)
+        conn.execute("INSERT INTO users (username, password_hash) VALUES (?, ?)", (username, hashed))
+
+def delete_user(user_id: int):
+    from database.connection import get_db
+    with get_db() as conn:
+        conn.execute("DELETE FROM users WHERE id = ?", (user_id,))
+
+def get_all_users():
+    from database.connection import get_db
+    with get_db() as conn:
+        cursor = conn.execute("SELECT id, username, created_at FROM users ORDER BY created_at DESC")
+        return cursor.fetchall()
+