func TestGetOffsetForPage(t *testing.T) {
var offset int
// First page offset should be zero
offset = pagination.GetOffsetForPage(
10, // count
1, // page
2, // limit
)
assert.Equal(t, 0, offset)
// Second page offset should be 2
offset = pagination.GetOffsetForPage(
10, // count
2, // page
2, // limit
)
assert.Equal(t, 2, offset)
// Last page offset should be 8
offset = pagination.GetOffsetForPage(
10, // count
5, // page
2, // limit
)
assert.Equal(t, 8, offset)
}
// Handles calls to list user accounts
// GET /v1/users
func (s *Service) listUsersHandler(w http.ResponseWriter, r *http.Request) {
// Get the authenticated user from the request context
authenticatedUser, err := GetAuthenticatedUser(r)
if err != nil {
response.UnauthorizedError(w, err.Error())
return
}
// Check permissions
if err = checkListUsersPermissions(authenticatedUser); err != nil {
response.Error(w, err.Error(), http.StatusForbidden)
return
}
// Get pagination params
page, limit, sorts, err := pagination.GetParams(r, []string{"id"})
if err != nil {
response.Error(w, err.Error(), http.StatusBadRequest)
return
}
// Count total number of results
count, err := s.PaginatedUsersCount()
if err != nil {
response.Error(w, err.Error(), http.StatusInternalServerError)
return
}
// Get pagination links
first, last, previous, next, err := pagination.GetLinks(r.URL, count, page, limit)
if err != nil {
response.Error(w, err.Error(), http.StatusBadRequest)
return
}
// Get paginated results
users, err := s.FindPaginatedUsers(
pagination.GetOffsetForPage(count, page, limit),
limit,
sorts,
)
if err != nil {
response.Error(w, err.Error(), http.StatusInternalServerError)
return
}
// Create response
self := util.GetCurrentURL(r)
listUsersResponse, err := NewListUsersResponse(
count, page,
self, first, last, previous, next,
users,
)
if err != nil {
response.Error(w, err.Error(), http.StatusInternalServerError)
return
}
// Write JSON response
response.WriteJSON(w, listUsersResponse, http.StatusOK)
}