import type { Paths } from "yt-dlp-transcript-common/lib/paths";
import { readDuplicateOverrides } from "yt-dlp-transcript-common/controller/duplicateShorts";
import type {
  DuplicateOverrides,
  DuplicateReport,
} from "yt-dlp-transcript-common/lib/duplicates";
import type {
  MediaScanOverrides,
  MediaScanReport,
} from "yt-dlp-transcript-common/lib/mediaScan";
import {
  readMediaScanOverrides,
  readMediaScanReport,
} from "yt-dlp-transcript-common/controller/scanCorruptMedia";
import { getSettings } from "yt-dlp-transcript-common/lib/settings";
import {
  autoPausedRows,
  type AutoPausedRow,
} from "yt-dlp-transcript-common/views/review";
import { getDuplicateReport } from "../../lib/requestCache";

// The half of the old actionable summary that is a HUMAN judgement rather than
// a lane's work: findings someone decides about, with the decisions kept beside
// them. Split out of loadActionable because nothing but the review page ever
// read these four — and the dashboard and the widget poll were paying the
// 6.7 MB duplicates parse on every render for a list they never showed.
export type ReviewSummary = {
  duplicates: DuplicateReport | null;
  // The human decisions kept alongside the report — a cluster's canonical
  // choice, "not a duplicate", and the `confirmed` flag that is the only thing
  // letting a needsReview cluster share derived work. Loaded here because the
  // review UI cannot show what has already been decided without it, and a
  // review queue that forgets its own answers re-asks every question.
  duplicateOverrides: DuplicateOverrides;
  // The corrupt-media scan, and the "reviewed, this one's fine" decisions kept
  // beside it. Null when the scan has never been run — which is NOT the same as
  // "nothing is wrong", and the section says so rather than rendering an
  // all-clear it has no evidence for.
  mediaScan: MediaScanReport | null;
  mediaScanOverrides: MediaScanOverrides;
  // WHAT THE MACHINE DECIDED ON ITS OWN. The storage watch forces a channel to
  // `paused` when the drive its media is on stops being there; until this, the
  // only surface saying so was a chip beside that one channel's tier on
  // /channels, so an operator whose platter went away found out by noticing a
  // channel had quietly stopped doing anything.
  //
  // It belongs here and not on /storage because the decision is about a
  // CHANNEL, and because the thing to do about it — resume, or leave it — is a
  // human judgement, which is what this page is. /storage is where the drive
  // gets fixed, and the section links there.
  //
  // FROM SETTINGS, NOT FROM DISK: `settings.channelPriority` is the record, and
  // reading it costs nothing (getSettings is memoized and every other page on
  // this render already called it).
  autoPaused: AutoPausedRow[];
};

export async function loadReviewSummary(paths: Paths): Promise<ReviewSummary> {
  const [duplicates, duplicateOverrides, mediaScan, mediaScanOverrides] =
    await Promise.all([
      getDuplicateReport(paths),
      readDuplicateOverrides(paths),
      readMediaScanReport(paths),
      readMediaScanOverrides(paths),
    ]);
  return {
    duplicates,
    duplicateOverrides,
    mediaScan,
    mediaScanOverrides,
    autoPaused: autoPausedRows(getSettings().channelPriority),
  };
}