Add available balance

postgres/categories.sql.go

@@ -48,6 +48,30 @@ func (q *Queries) CreateCategoryGroup(ctx context.Context, arg CreateCategoryGro
 	return i, err
 }
 
+const getAvailableBalance = `-- name: GetAvailableBalance :one
+SELECT 
+    ((
+        SELECT SUM(transactions.amount)
+        FROM transactions
+        LEFT JOIN categories ON categories.id = transactions.category_id
+        LEFT JOIN budgets ON budgets.income_category_id = categories.id
+        WHERE budgets.id = $1
+    ) - (
+        SELECT SUM(assignments.amount)
+        FROM assignments
+        INNER JOIN categories ON categories.id = assignments.category_id
+        INNER JOIN category_groups ON category_groups.id = categories.category_group_id
+        WHERE category_groups.budget_id = $1
+    ))::decimal(12,2)
+`
+
+func (q *Queries) GetAvailableBalance(ctx context.Context, budgetID uuid.UUID) (Numeric, error) {
+	row := q.db.QueryRowContext(ctx, getAvailableBalance, budgetID)
+	var column_1 Numeric
+	err := row.Scan(&column_1)
+	return column_1, err
+}
+
 const getCategories = `-- name: GetCategories :many
 SELECT categories.id, categories.category_group_id, categories.name, category_groups.name as group FROM categories
 INNER JOIN category_groups ON categories.category_group_id = category_groups.id
@@ -113,7 +137,16 @@ SELECT categories.id, categories.name, category_groups.name as group,
             WHERE categories.id = t_this.category_id 
             AND t_this.date BETWEEN $1 AND $2
         )
-    , 0)::decimal(12,2) as activity
+    , 0)::decimal(12,2) as activity,
+    COALESCE(
+        (
+            SELECT SUM(a_hist.amount)
+            FROM assignments a_hist
+            WHERE categories.id = a_hist.category_id 
+            AND a_hist.date BETWEEN $1 AND $2
+        )
+    ,0)::decimal(12,2) as assigned
+
 FROM categories
 INNER JOIN category_groups ON categories.category_group_id = category_groups.id
 WHERE category_groups.budget_id = $3
@@ -133,6 +166,7 @@ type GetCategoriesWithBalanceRow struct {
 	Group    string
 	Balance  Numeric
 	Activity Numeric
+	Assigned Numeric
 }
 
 func (q *Queries) GetCategoriesWithBalance(ctx context.Context, arg GetCategoriesWithBalanceParams) ([]GetCategoriesWithBalanceRow, error) {
@@ -150,6 +184,7 @@ func (q *Queries) GetCategoriesWithBalance(ctx context.Context, arg GetCategorie
 			&i.Group,
 			&i.Balance,
 			&i.Activity,
+			&i.Assigned,
 		); err != nil {
 			return nil, err
 		}