func generatePagingLinks(r *http.Request, query search.Query, total uint32) []models.BundleLinkComponent {
links := make([]models.BundleLinkComponent, 0, 5)
values := query.NormalizedQueryValues(false)
options := query.Options()
count := uint32(options.Count)
offset := uint32(options.Offset)
// First create the base URL for paging
baseURL := responseURL(r, query.Resource)
// Self link
links = append(links, newLink("self", baseURL, values, count, offset))
// First link
links = append(links, newLink("first", baseURL, values, count, uint32(0)))
// Previous link
if offset > uint32(0) {
newOffset := offset - count
// Handle case where paging is uneven (e.g., count=10&offset=5)
if count > offset {
newOffset = uint32(0)
}
links = append(links, newLink("previous", baseURL, values, offset-newOffset, newOffset))
}
// Next Link
if total > (offset + count) {
links = append(links, newLink("next", baseURL, values, count, offset+count))
}
// Last Link
remainder := (total - offset) % count
if total < offset {
remainder = uint32(0)
}
newOffset := total - remainder
if remainder == uint32(0) && total > count {
newOffset = total - count
}
links = append(links, newLink("last", baseURL, values, count, newOffset))
return links
}
