-- View: paper_trade_detail
-- Per-order paper trade detail joining orders, fills, and the originating
-- recommendation's prediction outcome. Useful for drill-down from the scorecard.
-- Requirements: 10.1, 10.3, 10.4
-- Design ref: Section 9.2 (evidence-to-outcome drill-down)

CREATE OR REPLACE VIEW lakehouse.stonks.paper_trade_detail AS
SELECT
    o.order_id,
    o.recommendation_id,
    o.ticker,
    o.side,
    o.order_type,
    o.quantity,
    o.limit_price,
    o.status            AS order_status,
    o.submitted_at,
    f.fill_id,
    f.fill_price,
    f.fill_quantity,
    f.commission,
    f.filled_at,
    -- Slippage: difference between limit and fill price (buys positive = worse)
    CASE
        WHEN o.limit_price IS NOT NULL AND o.limit_price > 0 THEN
            (f.fill_price - o.limit_price) / o.limit_price * 100
        ELSE NULL
    END                 AS slippage_pct,
    -- Link back to prediction outcome
    pvo.predicted_action,
    pvo.predicted_confidence,
    pvo.actual_move_pct,
    pvo.outcome         AS prediction_outcome,
    o.broker_account,
    o.dt
FROM
    lakehouse.stonks.trade_orders o
LEFT JOIN
    lakehouse.stonks.trade_fills f
    ON o.order_id = f.order_id
    AND o.dt = f.dt
LEFT JOIN
    lakehouse.stonks.prediction_vs_outcome pvo
    ON o.recommendation_id = pvo.recommendation_id
    AND o.dt = pvo.dt
WHERE
    o.execution_mode = 'paper';