Show Account Balance

http/accounts.go

@@ -9,7 +9,7 @@ import (
 )
 
 type AccountData struct {
-	Accounts []postgres.Account
+	Accounts []postgres.GetAccountsRow
 }
 
 func (h *Handler) accounts(c *gin.Context) {

postgres/accounts.sql.go

@@ -29,20 +29,28 @@ func (q *Queries) CreateAccount(ctx context.Context, arg CreateAccountParams) (A
 }
 
 const getAccounts = `-- name: GetAccounts :many
-SELECT accounts.id, accounts.budget_id, accounts.name FROM accounts 
+SELECT accounts.id, accounts.name, SUM(transactions.amount) as balance FROM accounts
 WHERE accounts.budget_id = $1
+AND transactions.date < NOW()
+GROUP BY accounts.id, accounts.name
 `
 
-func (q *Queries) GetAccounts(ctx context.Context, budgetID uuid.UUID) ([]Account, error) {
+type GetAccountsRow struct {
+	ID      uuid.UUID
+	Name    string
+	Balance int64
+}
+
+func (q *Queries) GetAccounts(ctx context.Context, budgetID uuid.UUID) ([]GetAccountsRow, error) {
 	rows, err := q.db.Query(ctx, getAccounts, budgetID)
 	if err != nil {
 		return nil, err
 	}
 	defer rows.Close()
-	var items []Account
+	var items []GetAccountsRow
 	for rows.Next() {
-		var i Account
-		if err := rows.Scan(&i.ID, &i.BudgetID, &i.Name); err != nil {
+		var i GetAccountsRow
+		if err := rows.Scan(&i.ID, &i.Name, &i.Balance); err != nil {
 			return nil, err
 		}
 		items = append(items, i)

postgres/queries/accounts.sql

@@ -5,5 +5,7 @@ VALUES ($1, $2)
 RETURNING *;
 
 -- name: GetAccounts :many
-SELECT accounts.* FROM accounts 
-WHERE accounts.budget_id = $1;
+SELECT accounts.id, accounts.name, SUM(transactions.amount) as balance FROM accounts
+WHERE accounts.budget_id = $1
+AND transactions.date < NOW()
+GROUP BY accounts.id, accounts.name;

web/accounts.html

@@ -11,7 +11,7 @@
     {{range .Accounts}}
     <div class="budget-item">
         <a href="account/{{.ID}}">{{.Name}}</a>
-        <span class="time"></span>
+        <span class="time">{{.Balance}}</span>
     </div>
     {{end}}
 {{end}}