fastpastebin/pagination/exported.go

94 lines
3.0 KiB
Go

package pagination
import (
// stdlib
"strconv"
"strings"
// local
"github.com/pztrn/fastpastebin/api/http/static"
)
// CreateHTML creates pagination HTML based on passed parameters.
func CreateHTML(currentPage int, pages int, linksBase string) string {
// Load templates.
paginationHTMLRaw, err := static.ReadFile("pagination.html")
if err != nil {
return "Missing pagination.html"
}
paginationLinkRaw, err1 := static.ReadFile("pagination_link.html")
if err1 != nil {
return "Missing pagination_link.html"
}
paginationLinkCurrentRaw, err2 := static.ReadFile("pagination_link_current.html")
if err2 != nil {
return "Missing pagination_link_current.html"
}
paginationEllipsisRaw, err3 := static.ReadFile("pagination_ellipsis.html")
if err3 != nil {
return "Missing pagination_ellipsis.html"
}
// First page should always be visible.
var paginationString = ""
if currentPage == 1 {
paginationString = strings.Replace(string(paginationLinkCurrentRaw), "{pageNum}", strconv.Itoa(currentPage), -1)
} else {
paginationString = strings.Replace(string(paginationLinkRaw), "{pageNum}", "1", -1)
paginationString = strings.Replace(string(paginationString), "{paginationLink}", linksBase+"1", -1)
}
var ellipsisStartAdded = false
var ellipsisEndAdded = false
i := 2
for i <= pages {
if pages > 5 {
if currentPage-3 < i && currentPage+3 > i || i == pages {
var paginationItemRaw = string(paginationLinkRaw)
if i == currentPage {
paginationItemRaw = string(paginationLinkCurrentRaw)
}
paginationItem := strings.Replace(paginationItemRaw, "{pageNum}", strconv.Itoa(i), -1)
paginationItem = strings.Replace(paginationItem, "{paginationLink}", linksBase+strconv.Itoa(i), 1)
paginationString += paginationItem
} else {
if currentPage-3 < i && !ellipsisStartAdded {
paginationString += string(paginationEllipsisRaw)
ellipsisStartAdded = true
} else if currentPage+3 > i && !ellipsisEndAdded {
paginationString += string(paginationEllipsisRaw)
ellipsisEndAdded = true
}
}
} else {
var paginationItemRaw = string(paginationLinkRaw)
if i == currentPage {
paginationItemRaw = string(paginationLinkCurrentRaw)
}
paginationItem := strings.Replace(paginationItemRaw, "{pageNum}", strconv.Itoa(i), -1)
paginationItem = strings.Replace(paginationItem, "{paginationLink}", linksBase+strconv.Itoa(i), 1)
paginationString += paginationItem
}
i += 1
}
pagination := strings.Replace(string(paginationHTMLRaw), "{paginationLinks}", paginationString, 1)
if currentPage+1 <= pages {
pagination = strings.Replace(pagination, "{nextPageLink}", linksBase+strconv.Itoa(currentPage+1), 1)
} else {
pagination = strings.Replace(pagination, "{nextPageLink}", linksBase+strconv.Itoa(pages), 1)
}
if currentPage-1 > 1 {
pagination = strings.Replace(pagination, "{previousPageLink}", linksBase+strconv.Itoa(currentPage-1), 1)
} else {
pagination = strings.Replace(pagination, "{previousPageLink}", linksBase, 1)
}
return pagination
}