func generatePagingLinks(baseURL url.URL, query search.Query, total uint32) []models.BundleLinkComponent {
links := make([]models.BundleLinkComponent, 0, 5)
params := query.URLQueryParameters(true)
offset := 0
if pOffset := params.Get(search.OffsetParam); pOffset != "" {
offset, _ = strconv.Atoi(pOffset)
if offset < 0 {
offset = 0
}
}
count := search.NewQueryOptions().Count
if pCount := params.Get(search.CountParam); pCount != "" {
count, _ = strconv.Atoi(pCount)
if count < 1 {
count = search.NewQueryOptions().Count
}
}
// Self link
links = append(links, newLink("self", baseURL, params, offset, count))
// First link
links = append(links, newLink("first", baseURL, params, 0, count))
// Previous link
if offset > 0 {
prevOffset := offset - count
// Handle case where paging is uneven (e.g., count=10&offset=5)
if prevOffset < 0 {
prevOffset = 0
}
prevCount := offset - prevOffset
links = append(links, newLink("previous", baseURL, params, prevOffset, prevCount))
}
// Next Link
if total > uint32(offset+count) {
nextOffset := offset + count
links = append(links, newLink("next", baseURL, params, nextOffset, count))
}
// Last Link
remainder := (int(total) - offset) % count
if int(total) < offset {
remainder = 0
}
newOffset := int(total) - remainder
if remainder == 0 && int(total) > count {
newOffset = int(total) - count
}
links = append(links, newLink("last", baseURL, params, newOffset, count))
return links
}
