rbac system first stage

internal/handlers/page_opt_helpers.go

@@ -0,0 +1,68 @@
+package handlers
+
+import (
+	"net/http"
+	"strconv"
+
+	"git.haelnorr.com/h/oslstats/internal/db"
+	"github.com/pkg/errors"
+	"github.com/uptrace/bun"
+)
+
+func pageOptsFromForm(r *http.Request) (*db.PageOpts, error) {
+	var pageNum, perPage int
+	var order bun.Order
+	var orderBy string
+	var err error
+
+	if pageStr := r.FormValue("page"); pageStr != "" {
+		pageNum, err = strconv.Atoi(pageStr)
+		if err != nil {
+			return nil, errors.Wrap(err, "invalid page number")
+		}
+	}
+	if perPageStr := r.FormValue("per_page"); perPageStr != "" {
+		perPage, err = strconv.Atoi(perPageStr)
+		if err != nil {
+			return nil, errors.Wrap(err, "invalid per_page number")
+		}
+	}
+	order = bun.Order(r.FormValue("order"))
+	orderBy = r.FormValue("order_by")
+
+	pageOpts := &db.PageOpts{
+		Page:    pageNum,
+		PerPage: perPage,
+		Order:   order,
+		OrderBy: orderBy,
+	}
+	return pageOpts, nil
+}
+
+func pageOptsFromQuery(r *http.Request) (*db.PageOpts, error) {
+	var pageNum, perPage int
+	var order bun.Order
+	var orderBy string
+	var err error
+	if pageStr := r.URL.Query().Get("page"); pageStr != "" {
+		pageNum, err = strconv.Atoi(pageStr)
+		if err != nil {
+			return nil, errors.Wrap(err, "invalid page number")
+		}
+	}
+	if perPageStr := r.URL.Query().Get("per_page"); perPageStr != "" {
+		perPage, err = strconv.Atoi(perPageStr)
+		if err != nil {
+			return nil, errors.Wrap(err, "invalid per_page number")
+		}
+	}
+	order = bun.Order(r.URL.Query().Get("order"))
+	orderBy = r.URL.Query().Get("order_by")
+	pageOpts := &db.PageOpts{
+		Page:    pageNum,
+		PerPage: perPage,
+		Order:   order,
+		OrderBy: orderBy,
+	}
+	return pageOpts, nil
+}