initial commit 2

application/applicationservice/util.go

@@ -0,0 +1,38 @@
+package applicationservice
+
+import (
+	"math"
+
+	"bitbucket.org/nemt/nemt-portal-api/application/viewmodel"
+)
+
+// getTakeSkipPaging return the take and skip from page number and item quantity
+func getTakeSkipPaging(quantity int64, page int64) (take int64, skip int64) {
+	if page < 1 {
+		page = 1
+	}
+
+	if quantity < 1 {
+		quantity = 10
+	} else if quantity > 1000 {
+		quantity = 1000
+	}
+
+	take = quantity // itens per page
+	skip = (page - 1) * quantity
+
+	return take, skip
+}
+
+// buildPaginatedResult returns a paginatedResult instance
+func buildPaginatedResult(list interface{}, skip int64, take int64, totalRecords int64) viewmodel.PaginatedResult {
+	return viewmodel.PaginatedResult{
+		List: list,
+		Pagination: viewmodel.ReturnPagination{
+			CurrentPage:    (skip / take) + 1,
+			RecordsPerPage: take,
+			TotalRecords:   totalRecords,
+			TotalPages:     int64(math.Ceil(float64(totalRecords) / float64(take))),
+		},
+	}
+}