Migrate from templates to Gomponents (#103)

pkg/page/pager.go

@@ -1,86 +0,0 @@
-package page
-
-import (
-	"math"
-	"strconv"
-
-	"github.com/labstack/echo/v4"
-)
-
-const (
-	// DefaultItemsPerPage stores the default amount of items per page
-	DefaultItemsPerPage = 20
-
-	// PageQueryKey stores the query key used to indicate the current page
-	PageQueryKey = "page"
-)
-
-// Pager provides a mechanism to allow a user to page results via a query parameter
-type Pager struct {
-	// Items stores the total amount of items in the result set
-	Items int
-
-	// Page stores the current page number
-	Page int
-
-	// ItemsPerPage stores the amount of items to display per page
-	ItemsPerPage int
-
-	// Pages stores the total amount of pages in the result set
-	Pages int
-}
-
-// NewPager creates a new Pager
-func NewPager(ctx echo.Context, itemsPerPage int) Pager {
-	p := Pager{
-		ItemsPerPage: itemsPerPage,
-		Pages:        1,
-		Page:         1,
-	}
-
-	if page := ctx.QueryParam(PageQueryKey); page != "" {
-		if pageInt, err := strconv.Atoi(page); err == nil {
-			if pageInt > 0 {
-				p.Page = pageInt
-			}
-		}
-	}
-
-	return p
-}
-
-// SetItems sets the amount of items in total for the pager and calculate the amount
-// of total pages based off on the item per page.
-// This should be used rather than setting either items or pages directly.
-func (p *Pager) SetItems(items int) {
-	p.Items = items
-
-	if items > 0 {
-		p.Pages = int(math.Ceil(float64(items) / float64(p.ItemsPerPage)))
-	} else {
-		p.Pages = 1
-	}
-
-	if p.Page > p.Pages {
-		p.Page = p.Pages
-	}
-}
-
-// IsBeginning determines if the pager is at the beginning of the pages
-func (p Pager) IsBeginning() bool {
-	return p.Page == 1
-}
-
-// IsEnd determines if the pager is at the end of the pages
-func (p Pager) IsEnd() bool {
-	return p.Page >= p.Pages
-}
-
-// GetOffset determines the offset of the results in order to get the items for
-// the current page
-func (p Pager) GetOffset() int {
-	if p.Page == 0 {
-		p.Page = 1
-	}
-	return (p.Page - 1) * p.ItemsPerPage
-}