add game & game_players table and rename password value in user to password_hash

app/db.py

@@ -22,14 +22,37 @@ def init_db(app):
         db.execute("PRAGMA foreign_keys=ON;")
 
         # create inital tables
-        db.execute("""
+        db.executescript("""
         CREATE TABLE IF NOT EXISTS users (
             id INTEGER PRIMARY KEY AUTOINCREMENT,username TEXT UNIQUE NOT NULL,
-        password TEXT NOT NULL,
+            password_hash TEXT NOT NULL,
             created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
         );
+                   
+        CREATE TABLE IF NOT EXISTS games (
+            id INTEGER PRIMARY KEY AUTOINCREMENT,
+            created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+            final_fen TEXT,
+            termination TEXT CHECK(termination IN ('checkmate', 'resignation', 'timeout', 'draw', 'other'))
+        );
+
+        CREATE TABLE IF NOT EXISTS game_players (
+            game_id INTEGER NOT NULL,
+            player_id INTEGER NOT NULL,
+            color TEXT NOT NULL CHECK(color IN ('white', 'black')),
+
+            PRIMARY KEY (game_id, player_id),
+            UNIQUE (game_id, color),
+
+            FOREIGN KEY (game_id) REFERENCES games(id) ON DELETE CASCADE,
+            FOREIGN KEY (player_id) REFERENCES users(id) ON DELETE CASCADE
+        );
+
+        CREATE INDEX IF NOT EXISTS idx_game_players_game_id
+        ON game_players(game_id);
+
+        CREATE INDEX IF NOT EXISTS idx_game_players_player_id
+        ON game_players(player_id);
         """
         )
-
-
         db.commit()

app/routes/auth.py

@@ -19,7 +19,7 @@ def login():
             (username,)
         ).fetchone()
 
-        if row and check_password_hash(row["password"], password):
+        if row and check_password_hash(row["password_hash"], password):
             user = User(id=row["id"], username=row["username"])
             login_user(user)
 
@@ -54,7 +54,7 @@ def register():
         hashed_password = generate_password_hash(password)
 
         db.execute(
-            "INSERT INTO users (username, password) VALUES (?, ?)",
+            "INSERT INTO users (username, password_hash) VALUES (?, ?)",
             (username, hashed_password)
         )
         db.commit()