-- Fix Zero P&L Trades (CORRECTED VERSION)
-- This script recalculates P&L for trades that were incorrectly recorded as $0.00
-- IMPORTANT: positionSizeUSD already includes leverage, so we must divide by leverage
-- to get the actual capital at risk, then multiply by price change %
-- Created: 2025-11-03
-- Backup: backup_before_pnl_fix_20251103_091248.sql

-- First, let's see what we're fixing
SELECT 
  id,
  symbol,
  direction,
  ROUND("entryPrice"::numeric, 2) as entry,
  ROUND("exitPrice"::numeric, 2) as exit,
  "positionSizeUSD",
  leverage,
  "realizedPnL" as current_pnl,
  "exitReason"
FROM "Trade"
WHERE "realizedPnL" = 0 
  AND "exitReason" IS NOT NULL 
  AND "exitPrice" IS NOT NULL
  AND "exitOrderTx" IN ('ON_CHAIN_ORDER', 'UNKNOWN_CLOSURE')
ORDER BY "entryTime" DESC;

-- CORRECT P&L Formula:
-- 1. actualCapital = positionSizeUSD / leverage (remove leverage to get base capital)
-- 2. priceChange% = (exitPrice - entryPrice) / entryPrice * 100
-- 3. accountReturn% = priceChange% * leverage (leverage amplifies returns)
-- 4. realizedPnL = actualCapital * (accountReturn% / 100)
--
-- Simplified: realizedPnL = (positionSizeUSD / leverage) * (priceChange% * leverage) / 100
--                          = positionSizeUSD * priceChange% / 100
-- (leverage cancels out!)

UPDATE "Trade"
SET 
  "realizedPnL" = CASE
    WHEN direction = 'long' THEN
      -- Long: profit when exit > entry
      ("positionSizeUSD" * ((("exitPrice" - "entryPrice") / "entryPrice") * 100)) / 100
    WHEN direction = 'short' THEN
      -- Short: profit when exit < entry  
      ("positionSizeUSD" * ((("entryPrice" - "exitPrice") / "entryPrice") * 100)) / 100
    ELSE 0
  END,
  "realizedPnLPercent" = CASE
    WHEN direction = 'long' THEN
      ((("exitPrice" - "entryPrice") / "entryPrice") * 100)
    WHEN direction = 'short' THEN
      ((("entryPrice" - "exitPrice") / "entryPrice") * 100)
    ELSE 0
  END,
  "updatedAt" = NOW()
WHERE "realizedPnL" = 0 
  AND "exitReason" IS NOT NULL 
  AND "exitPrice" IS NOT NULL
  AND "exitOrderTx" IN ('ON_CHAIN_ORDER', 'UNKNOWN_CLOSURE');

-- Show the results after fix
SELECT 
  id,
  symbol,
  direction,
  ROUND("entryPrice"::numeric, 4) as entry,
  ROUND("exitPrice"::numeric, 4) as exit,
  ROUND("positionSizeUSD"::numeric, 2) as notional,
  leverage,
  ROUND(("positionSizeUSD" / leverage)::numeric, 2) as capital,
  ROUND("realizedPnL"::numeric, 2) as fixed_pnl,
  ROUND("realizedPnLPercent"::numeric, 2) as pnl_pct,
  "exitReason"
FROM "Trade"
WHERE "exitOrderTx" IN ('ON_CHAIN_ORDER', 'UNKNOWN_CLOSURE')
  AND "exitReason" IS NOT NULL
ORDER BY "entryTime" DESC
LIMIT 15;

-- Show new total P&L
SELECT 
  COUNT(*) as total_trades,
  SUM(CASE WHEN "realizedPnL" > 0 THEN 1 ELSE 0 END) as wins,
  SUM(CASE WHEN "realizedPnL" <= 0 THEN 1 ELSE 0 END) as losses,
  ROUND(SUM("realizedPnL")::numeric, 2) as total_pnl,
  ROUND(AVG(CASE WHEN "realizedPnL" > 0 THEN "realizedPnL" END)::numeric, 2) as avg_win,
  ROUND(AVG(CASE WHEN "realizedPnL" <= 0 THEN "realizedPnL" END)::numeric, 2) as avg_loss
FROM "Trade" 
WHERE "entryTime" >= NOW() - INTERVAL '7 days' 
  AND "exitReason" IS NOT NULL;