first commit

pkg/utils/query.go

@@ -0,0 +1,27 @@
+package utils
+
+import (
+	"github.com/labstack/echo/v4"
+	"gorm.io/gorm"
+	"gorm.io/gorm/clause"
+)
+
+func ApplySort(tx *gorm.DB, column string, isDesc bool) {
+	tx.Order(clause.OrderByColumn{
+		Column: clause.Column{Name: column},
+		Desc:   isDesc,
+	})
+}
+
+func ApplyFilters(tx *gorm.DB, column string, value string) {
+	if column != "" && value != "" {
+		tx.Where(column + " LIKE '%" + value + "%'")
+	}
+}
+
+func ApplyIdFilter(c echo.Context, tx *gorm.DB) {
+	id := c.Param("id")
+	if id != "" {
+		tx.Where("id = ?", id)
+	}
+}

pkg/utils/url.go

@@ -0,0 +1,52 @@
+package utils
+
+import (
+	"net/url"
+	"strconv"
+	"strings"
+)
+
+func GetQueryParam(query url.Values, key string, defaultVal string) string {
+	data := query.Get(key)
+
+	if data == "" {
+		return defaultVal
+	}
+
+	return data
+}
+
+func GetPaginationParams(query url.Values) (int, int) {
+	offset := GetQueryParam(query, "offset", "0")
+	limit := GetQueryParam(query, "limit", "10")
+
+	limitInt, err := strconv.Atoi(limit)
+
+	if err != nil {
+		limitInt = 10
+	}
+
+	offsetInt, err := strconv.Atoi(offset)
+
+	if err != nil {
+		offsetInt = 0
+	}
+
+	return limitInt, offsetInt
+}
+
+func GetFilterParams(query url.Values) (string, bool, string, string) {
+	sort := GetQueryParam(query, "sort", "id:asc")
+	filter := GetQueryParam(query, "filter", ":")
+
+	filters := strings.Split(filter, ":")
+	sorts := strings.Split(sort, ":")
+
+	isDesc := false
+
+	if sorts[1] == "desc" {
+		isDesc = true
+	}
+
+	return sorts[0], isDesc, filters[0], filters[1]
+}