// ==========================================
// DOMAIN: БИБЛИОГРАФИЧЕСКИЕ СЕКЦИИ
// ==========================================
#import "document.typ": fail

#let bibliography-section(
  id,
  sources,
  title: auto,
  style: "gost-r-705-2008-numeric",
  target: auto,
  group: auto,
  full: false,
  page_break: true,
) = {
  if type(id) != str or id.trim() == "" {
    fail("bibliography.id", "нужна непустая строка")
  }
  let normalized-sources = if type(sources) == array { sources } else { (sources,) }
  if normalized-sources.len() == 0 {
    fail("bibliography.sources", "нужен хотя бы один источник")
  }
  for source in normalized-sources {
    if type(source) not in (str, path, bytes) {
      fail("bibliography.sources", "ожидались str, path или bytes")
    }
  }
  if type(full) != bool {
    fail("bibliography.full", "ожидался bool")
  }
  if type(page_break) != bool {
    fail("bibliography.page-break", "ожидался bool")
  }
  (
    kind: "bibliography-section",
    id: id,
    sources: normalized-sources,
    title: title,
    style: style,
    target: target,
    group: group,
    full: full,
    page-break: page_break,
  )
}

#let validate-bibliographies(sections) = {
  if type(sections) != array {
    fail("bibliographies", "ожидался array")
  }
  let seen = ()
  for section in sections {
    if type(section) != dictionary or section.at("kind", default: none) != "bibliography-section" {
      fail("bibliographies", "каждый элемент должен быть bibliography-section")
    }
    if section.id in seen {
      fail("bibliographies", "повторяющийся id " + repr(section.id))
    }
    seen.push(section.id)
  }
  sections
}