import { grantedCategories, type RecordsRetrievalSummary, type RetrievableType } from "../../../services/RecordsConnectionsService.tsx";

/** Each kind of record a retrieval reads, in the words the Records screens use. */
export const RETRIEVABLE_WORDS: Record<RetrievableType, string> = {
  AllergyIntolerance: "Allergies",
  Condition: "Problems and diagnoses",
  Immunization: "Immunizations",
  MedicationRequest: "Medication orders",
  MedicationStatement: "Medications taken",
  Observation: "Vitals and results",
  Procedure: "Procedures",
};

const wordsOf = (type: string): string => RETRIEVABLE_WORDS[type as RetrievableType] ?? type;

/** HL7 observation categories, as the Records screens name them; any other is named by its code. */
const CATEGORY_WORDS: Record<string, string> = {
  laboratory: "lab results", "vital-signs": "vital signs", "social-history": "social history", imaging: "imaging", exam: "exam findings",
  procedure: "procedure results", survey: "surveys", therapy: "therapy", activity: "activity",
};
export const categoryWords = (categories: readonly string[]): string =>
  "only " + categories.map((code) => CATEGORY_WORDS[code] ?? code.replace(/-/g, " ")).join(", ");

/** A kind a retrieval may read, with the categories it is limited to when the grant names them. */
export const retrievableWords = (type: RetrievableType, scopes: readonly string[]): string => {
  const categories = grantedCategories(scopes, type);
  return RETRIEVABLE_WORDS[type] + (categories.length ? " (" + categoryWords(categories) + ")" : "");
};

/** Where a retrieved original came from and how much was read. */
export const retrievalLine = (retrieval: RecordsRetrievalSummary): string =>
  `From ${retrieval.issuer} · ${retrieval.pages} ${retrieval.pages === 1 ? "page" : "pages"} · ${retrieval.resources} records`;

/** The kinds kept in the original that the review will not offer as items, with how many of each; none says nothing. */
export const notOfferedLine = (retrieval: RecordsRetrievalSummary): string | undefined => {
  if (!retrieval.notOffered.length) return undefined;
  const kinds = retrieval.notOffered.map((type) => `${wordsOf(type)} (${retrieval.counts[type] ?? 0})`);
  return "Kept in the original, not offered as items: " + kinds.join(", ");
};