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refactor(payments): replace inline total_amount queries with booking field

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Simplify payment handlers by using bookings.total_amount computed column instead of inline UNION sub-queries calculating price totals from booking_services and booking_custom_services.

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
This commit is contained in:
popertots
2026-06-21 21:47:16 +01:00
co-authored by Sisyphus
parent 7ea6fab3af
commit 14df08e129
3 changed files with 27 additions and 110 deletions
Download Patch File Download Diff File Expand all files Collapse all files
backend/handlers/payments/handlers.go
+3 -33
View File
@@ -139,17 +139,7 @@ func calculateDiscountPreview(ctx context.Context, bookingID string, userID stri
var bookingTotal float64
db.Conn.QueryRow(ctx, `
SELECT COALESCE(SUM(price_val), 0) FROM (
SELECT COALESCE(bs.override_price, s.price) AS price_val
FROM booking_services bs
JOIN services s ON bs.service_id = s.id
WHERE bs.booking_id = $1
UNION ALL
SELECT COALESCE(bcs.override_price, cs.price)
FROM booking_custom_services bcs
JOIN custom_services cs ON bcs.custom_service_id = cs.id
WHERE bcs.booking_id = $1
) sub
SELECT total_amount FROM bookings WHERE id = $1
`, bookingID).Scan(&bookingTotal)
if bookingTotal <= 0 {
@@ -913,17 +903,7 @@ func CreateBookingPayment(w http.ResponseWriter, r *http.Request) {
var depositMet bool
tx.QueryRow(r.Context(), `
WITH booking_total AS (
SELECT COALESCE(SUM(price_val), 0) * 100 AS total_cents FROM (
SELECT COALESCE(bs.override_price, s.price) AS price_val
FROM booking_services bs
LEFT JOIN services s ON bs.service_id = s.id
WHERE bs.booking_id = $1
UNION ALL
SELECT COALESCE(bcs.override_price, cs.price)
FROM booking_custom_services bcs
LEFT JOIN custom_services cs ON bcs.custom_service_id = cs.id
WHERE bcs.booking_id = $1
) price_sub
SELECT total_amount * 100 AS total_cents FROM bookings WHERE id = $1
),
paid_total AS (
SELECT COALESCE(SUM(amount), 0) * 100 AS paid_cents
@@ -988,17 +968,7 @@ func applyEligibleCampaignsAtPayment(ctx context.Context, bookingID string, user
var bookingTotal float64
if err := db.Conn.QueryRow(ctx, `
SELECT COALESCE(SUM(price_val), 0) FROM (
SELECT COALESCE(bs.override_price, s.price) AS price_val
FROM booking_services bs
JOIN services s ON bs.service_id = s.id
WHERE bs.booking_id = $1
UNION ALL
SELECT COALESCE(bcs.override_price, cs.price)
FROM booking_custom_services bcs
JOIN custom_services cs ON bcs.custom_service_id = cs.id
WHERE bcs.booking_id = $1
) sub
SELECT total_amount FROM bookings WHERE id = $1
`, bookingID).Scan(&bookingTotal); err != nil {
log.Printf("Failed to calculate booking total for campaign check: %v", err)
return
backend/handlers/payments/loyalty.go
+17 -44
View File
@@ -4,6 +4,7 @@ import (
"crussell/db"
"crussell/internal/validators"
"crussell/mw"
"database/sql"
"encoding/json"
"errors"
"log"
@@ -33,8 +34,20 @@ func ApplyLoyaltyRedemption(w http.ResponseWriter, r *http.Request) {
return
}
var bookingUserID string
if err := db.Conn.QueryRow(r.Context(), `SELECT user_id FROM bookings WHERE id = $1`, bookingID).Scan(&bookingUserID); err != nil {
var bookingUserID, bookingStatus string
var realPaymentExists bool
var loyaltyStamps int
var redemptionID sql.NullString
err := db.Conn.QueryRow(r.Context(), `
SELECT b.user_id, b.status,
COALESCE(EXISTS(SELECT 1 FROM payments WHERE booking_id = b.id AND payment_method != 'discount'), false) AS payment_exists,
u.loyalty_stamps,
(SELECT lr.id FROM loyalty_redemptions lr WHERE lr.user_id = u.id AND lr.status = 'pending' AND lr.expires_at > NOW() ORDER BY lr.redeemed_at ASC LIMIT 1) AS redemption_id
FROM bookings b
JOIN users u ON u.id = b.user_id
WHERE b.id = $1
`, bookingID).Scan(&bookingUserID, &bookingStatus, &realPaymentExists, &loyaltyStamps, &redemptionID)
if err != nil {
if errors.Is(err, pgx.ErrNoRows) {
http.Error(w, "Booking not found", http.StatusNotFound)
return
@@ -48,56 +61,26 @@ func ApplyLoyaltyRedemption(w http.ResponseWriter, r *http.Request) {
return
}
var bookingStatus string
if err := db.Conn.QueryRow(r.Context(), `SELECT status FROM bookings WHERE id = $1`, bookingID).Scan(&bookingStatus); err != nil {
log.Printf("Failed to get booking status: %v", err)
http.Error(w, "internal server error", http.StatusInternalServerError)
return
}
switch bookingStatus {
case "completed", "cancelled", "no_show", "deposit_lapsed":
http.Error(w, "Booking is in a terminal state and cannot accept redemptions", http.StatusBadRequest)
return
}
// Loyalty redemption must be on the first payment — reject if a real payment
// (non-discount) already exists on this booking.
var realPaymentExists bool
db.Conn.QueryRow(r.Context(), `SELECT EXISTS(SELECT 1 FROM payments WHERE booking_id = $1 AND payment_method != 'discount')`, bookingID).Scan(&realPaymentExists)
if realPaymentExists {
http.Error(w, "Loyalty must be redeemed on the first payment for this booking", http.StatusBadRequest)
return
}
var loyaltyStamps int
if err := db.Conn.QueryRow(r.Context(), `SELECT loyalty_stamps FROM users WHERE id = $1`, userID).Scan(&loyaltyStamps); err != nil {
if errors.Is(err, pgx.ErrNoRows) {
http.Error(w, "User not found", http.StatusNotFound)
return
}
log.Printf("Failed to get loyalty stamps: %v", err)
http.Error(w, "internal server error", http.StatusInternalServerError)
return
}
if loyaltyStamps < LoyaltyStampCost {
http.Error(w, "Insufficient loyalty stamps", http.StatusBadRequest)
return
}
var redemptionID string
if err := db.Conn.QueryRow(r.Context(), `
SELECT id FROM loyalty_redemptions
WHERE user_id = $1 AND status = 'pending' AND expires_at > NOW()
ORDER BY redeemed_at ASC LIMIT 1
`, userID).Scan(&redemptionID); err != nil {
if errors.Is(err, pgx.ErrNoRows) {
if !redemptionID.Valid {
http.Error(w, "No pending loyalty redemption found", http.StatusBadRequest)
return
}
log.Printf("Failed to check loyalty redemption: %v", err)
http.Error(w, "internal server error", http.StatusInternalServerError)
return
}
var existingDiscount int
if err := db.Conn.QueryRow(r.Context(), `
@@ -117,17 +100,7 @@ func ApplyLoyaltyRedemption(w http.ResponseWriter, r *http.Request) {
var bookingTotal float64
if err := tx.QueryRow(r.Context(), `
SELECT COALESCE(SUM(price_val), 0) FROM (
SELECT COALESCE(bs.override_price, s.price) AS price_val
FROM booking_services bs
JOIN services s ON bs.service_id = s.id
WHERE bs.booking_id = $1
UNION ALL
SELECT COALESCE(bcs.override_price, cs.price)
FROM booking_custom_services bcs
JOIN custom_services cs ON bcs.custom_service_id = cs.id
WHERE bcs.booking_id = $1
) sub
SELECT total_amount FROM bookings WHERE id = $1
`, bookingID).Scan(&bookingTotal); err != nil {
log.Printf("Failed to calculate booking total: %v", err)
http.Error(w, "internal server error", http.StatusInternalServerError)
backend/handlers/payments/service.go
+4 -30
View File
@@ -177,17 +177,7 @@ func (s *PaymentService) GetBookingPaymentSummary(ctx context.Context, bookingID
var totalAmount float64
err := db.Conn.QueryRow(ctx, `
SELECT COALESCE(SUM(price_val), 0) FROM (
SELECT COALESCE(bs.override_price, s.price) AS price_val
FROM booking_services bs
JOIN services s ON bs.service_id = s.id
WHERE bs.booking_id = $1
UNION ALL
SELECT COALESCE(bcs.override_price, cs.price)
FROM booking_custom_services bcs
JOIN custom_services cs ON bcs.custom_service_id = cs.id
WHERE bcs.booking_id = $1
) price_sub
SELECT total_amount FROM bookings WHERE id = $1
`, bookingID).Scan(&totalAmount)
if err != nil && !errors.Is(err, pgx.ErrNoRows) {
@@ -385,14 +375,8 @@ func (s *PaymentService) GetBookingPaymentInfo(ctx context.Context, bookingID st
COALESCE(pt.total_paid, 0)
FROM bookings b
LEFT JOIN (
SELECT booking_id, COALESCE(SUM(price_val), 0) AS total_amount FROM (
SELECT bs.booking_id, COALESCE(bs.override_price, s.price) AS price_val
FROM booking_services bs JOIN services s ON bs.service_id = s.id WHERE bs.booking_id = $1
UNION ALL
SELECT bcs.booking_id, COALESCE(bcs.override_price, cs.price)
FROM booking_custom_services bcs JOIN custom_services cs ON bcs.custom_service_id = cs.id WHERE bcs.booking_id = $1
) sub GROUP BY booking_id
) bt ON b.id = bt.booking_id
SELECT id, total_amount FROM bookings WHERE id = $1
) bt ON b.id = bt.id
LEFT JOIN (
SELECT booking_id, SUM(amount) AS total_paid
FROM payments WHERE booking_id = $1 AND status = 'completed' AND payment_method NOT IN ('discount', 'on_the_house') GROUP BY booking_id
@@ -418,17 +402,7 @@ func (s *PaymentService) GetBookingRemainingBalanceCents(ctx context.Context, bo
var remainingCents int64
err := db.Conn.QueryRow(ctx, `
WITH booking_total AS (
SELECT COALESCE(SUM(price_val), 0) AS total_pounds FROM (
SELECT COALESCE(bs.override_price, s.price) AS price_val
FROM booking_services bs
LEFT JOIN services s ON bs.service_id = s.id
WHERE bs.booking_id = $1
UNION ALL
SELECT COALESCE(bcs.override_price, cs.price)
FROM booking_custom_services bcs
LEFT JOIN custom_services cs ON bcs.custom_service_id = cs.id
WHERE bcs.booking_id = $1
) price_sub
SELECT total_amount AS total_pounds FROM bookings WHERE id = $1
),
paid_total AS (
SELECT COALESCE(SUM(amount), 0) AS paid_pounds