feat: add endpoint and logic for retrieving transaction chart data, including SQL queries, models, and service integration

sqlc_gen/dashboard.sql.go

@@ -253,3 +253,50 @@ func (q *Queries) GetTotalComponentStats(ctx context.Context, warehouseID pgtype
 	err := row.Scan(&i.TotalTypes, &i.TotalQuantity)
 	return i, err
 }
+
+const getTransactionChartData = `-- name: GetTransactionChartData :many
+SELECT DATE(st.created_at) AS date, st.transaction_type, COALESCE(SUM(st.quantity), 0)::bigint AS total_quantity
+FROM stock_transactions st
+JOIN containers con ON st.container_id = con.id
+JOIN shelves s ON con.shelf_id = s.id
+JOIN cabinets cab ON s.cabinet_id = cab.id
+JOIN rooms r ON cab.room_id = r.id
+WHERE st.transaction_type IN ('import', 'export')
+  AND st.created_at >= $1::timestamptz
+  AND st.created_at < $2::timestamptz
+  AND ($3::bigint IS NULL OR r.warehouse_id = $3::bigint)
+GROUP BY DATE(st.created_at), st.transaction_type
+ORDER BY DATE(st.created_at) ASC
+`
+
+type GetTransactionChartDataParams struct {
+	StartDate   time.Time   `db:"start_date" json:"startDate"`
+	EndDate     time.Time   `db:"end_date" json:"endDate"`
+	WarehouseID pgtype.Int8 `db:"warehouse_id" json:"warehouseId"`
+}
+
+type GetTransactionChartDataRow struct {
+	Date            pgtype.Date         `db:"date" json:"date"`
+	TransactionType TransactionTypeEnum `db:"transaction_type" json:"transactionType"`
+	TotalQuantity   int64               `db:"total_quantity" json:"totalQuantity"`
+}
+
+func (q *Queries) GetTransactionChartData(ctx context.Context, arg GetTransactionChartDataParams) ([]GetTransactionChartDataRow, error) {
+	rows, err := q.db.Query(ctx, getTransactionChartData, arg.StartDate, arg.EndDate, arg.WarehouseID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items []GetTransactionChartDataRow
+	for rows.Next() {
+		var i GetTransactionChartDataRow
+		if err := rows.Scan(&i.Date, &i.TransactionType, &i.TotalQuantity); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}

sqlc_gen/querier.go

@@ -71,6 +71,7 @@ type Querier interface {
 	GetStockAlerts(ctx context.Context) ([]GetStockAlertsRow, error)
 	GetTodayInvoiceCounts(ctx context.Context) ([]GetTodayInvoiceCountsRow, error)
 	GetTotalComponentStats(ctx context.Context, warehouseID pgtype.Int8) (GetTotalComponentStatsRow, error)
+	GetTransactionChartData(ctx context.Context, arg GetTransactionChartDataParams) ([]GetTransactionChartDataRow, error)
 	GetUserByEmail(ctx context.Context, email string) (User, error)
 	GetUserByID(ctx context.Context, id uuid.UUID) (User, error)
 	GetUserByUsername(ctx context.Context, username string) (User, error)