import type { DiagnosticOrderQueueRow } from "../hooks/useDiagnosticOrderQueue";

/**
 * READING IS A SECTION OF THE PRACTITIONER WORKSPACE, NOT A HAT.
 *
 * A radiologist reads studies and signs reports, and that is clinical judgement rather than bench
 * work -- so it cannot require putting on a technologist's hat. It is deliberately NOT derived from
 * `lensFor` like the queue and the bench are: that expression answers "whose bench work is this",
 * and reading is not bench work. A different question gets its own answer rather than a widened one,
 * which is the mistake the queue's own rail note argues against at length.
 *
 * THIS DECIDES WHOSE RAIL READING SITS IN, NOT WHETHER SOMEBODY MAY REACH IT. Reaching it takes the
 * `diagnostics` permission, as the queue does (roles/diagnostics/lab-and-imaging.md section 11): the
 * API refuses reporting, release and addenda to a practitioner without it, whatever the master role.
 */
export const READING_WORKSPACES = ["Practitioner"] as const;

export const workspaceReadsStudies = (workspace?: string): boolean =>
  (READING_WORKSPACES as readonly string[]).includes(workspace ?? "");

/**
 * A study that has been taken and nobody has reported.
 *
 * `performed` AND NO RESULT, which are two facts rather than one: the state says the pictures were taken,
 * and a report filed against the order is what takes it off the list. An order still `scheduled` has
 * nothing to read.
 */
export const awaitingRead = (row: DiagnosticOrderQueueRow): boolean =>
  row.kind === "imaging" && row.state === "performed" && !row.resultOnFile && !sentElsewhere(row) && !nothingFiled(row);

/** Performed with no images filed here: nothing to read yet. Uncounted is not none, and a study read for
 * another practice keeps its images with them. */
const nothingFiled = (row: DiagnosticOrderQueueRow): boolean =>
  row.images?.instances === 0 && !row.readFor;

/** Out with another practice to be read, which is theirs to report unless they declined it. */
const sentElsewhere = (row: DiagnosticOrderQueueRow): boolean =>
  Boolean(row.readElsewhere && !row.readElsewhere.declinedAt);

/** The practice off Akashic whose report is owed on this study, unless the study never reached them. */
export const outsideReportDueFrom = (row: DiagnosticOrderQueueRow): string | undefined =>
  row.outsideRead && row.outsideRead.confirmation?.outcome !== "not-received" && !row.resultOnFile
    ? row.outsideRead.reader
    : undefined;

/** A report written and not yet signed, which is the second half of the same person's job. */
export const awaitingSignature = (row: DiagnosticOrderQueueRow): boolean =>
  row.kind === "imaging" && Boolean(row.awaitingRelease);

/**
 * Signed, and therefore no longer work -- kept on the screen because "did that go out?" is a question
 * a radiologist asks, and because adding to a signed report is reached from here and nowhere else in
 * this workspace.
 */
export const alreadySigned = (row: DiagnosticOrderQueueRow): boolean =>
  row.kind === "imaging" && Boolean(row.resultOnFile) && !row.awaitingRelease;