feat: Most of Item and Order controllers

api/queries/OrderQueries.go

@@ -4,6 +4,24 @@ const CREATE_ORDER = `
 INSERT INTO order_record(user_id, orderer, date_due, date_placed) VALUES ($1, $2, $3, $4);
 `
 
+const GET_ORDER_BY_ORDER_INFORMATION = `
+SELECT
+	id,
+	user_id,
+	orderer,
+	date_due,
+	date_placed,
+	amount_paid,
+	filled,
+	delivered
+FROM
+	order_record
+WHERE
+	user_id = $1
+	AND orderer = $2
+	AND date_placed = $3;
+`
+
 const SET_ORDER_FILLED = `
 UPDATE order_record SET filled = $1 WHERE id = $2
 `
@@ -17,15 +35,23 @@ UPDATE order_record SET amount_paid = $1 WHERE id = $2
 `
 
 const GET_ORDER_TOTAL_AND_BALANCE = `
-SELECT 
-	SUM(oi.quantity * iph.price) AS order_total,
+SELECT
+	orec.id,
 	order_total - orec.amount_paid AS balance
 FROM
-	order_item oi
-	INNER JOIN item i ON oi.item_id = i.init_db_pool
-		AND oi.order_id = $1
-	INNER JOIN order_record orec ON oi.order_id = orec.order_id
-	INNER JOIN item_price_history iph ON iph.item_id = i.id
-		AND iph.valid_from <= oi.created_at
-		AND (iph.valid_to IS NULL OR iph.valid_to > oi.created_at);
+	order_record orec
+	INNER JOIN (
+		SELECT 
+			orec.id,
+			SUM(quantity * price) AS order_total
+		FROM
+			order_record orec
+			INNER JOIN order_item oi ON oi.order_id = orec.id
+			INNER JOIN item i ON oi.item_id = i.id
+				AND oi.order_id = 1
+			INNER JOIN item_price_history iph ON iph.item_id = i.id
+				AND iph.valid_from <= oi.created_at
+				AND (iph.valid_to IS NULL OR iph.valid_to > oi.created_at)
+		GROUP BY orec.id
+	) totals ON orec.id = totals.id
 `