CREATE TABLE IF NOT EXISTS signals (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    coin TEXT NOT NULL,
    timestamp DATETIME DEFAULT CURRENT_TIMESTAMP,
    technical_score REAL DEFAULT 50,
    news_score REAL DEFAULT 50,
    social_score REAL DEFAULT 50,
    ai_score REAL DEFAULT 50,
    composite_score REAL DEFAULT 50,
    signal TEXT DEFAULT 'HOLD'
);

CREATE TABLE IF NOT EXISTS trades (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    coin TEXT NOT NULL,
    side TEXT NOT NULL,
    price REAL NOT NULL,
    quantity REAL NOT NULL,
    amount_usd REAL NOT NULL,
    timestamp DATETIME DEFAULT CURRENT_TIMESTAMP,
    reason TEXT
);

CREATE TABLE IF NOT EXISTS positions (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    coin TEXT NOT NULL,
    entry_price REAL NOT NULL,
    quantity REAL NOT NULL,
    invested_usd REAL NOT NULL,
    status TEXT DEFAULT 'OPEN',
    opened_at DATETIME DEFAULT CURRENT_TIMESTAMP,
    closed_at DATETIME
);

CREATE TABLE IF NOT EXISTS portfolio (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    timestamp DATETIME DEFAULT CURRENT_TIMESTAMP,
    total_value REAL NOT NULL,
    cash REAL NOT NULL,
    pnl REAL NOT NULL,
    pnl_pct REAL NOT NULL
);

CREATE TABLE IF NOT EXISTS settings (
    key TEXT PRIMARY KEY,
    value TEXT NOT NULL
);

CREATE INDEX IF NOT EXISTS idx_signals_coin_ts ON signals(coin, timestamp);
CREATE INDEX IF NOT EXISTS idx_positions_status ON positions(status);
CREATE INDEX IF NOT EXISTS idx_trades_coin ON trades(coin);