import { test } from "node:test";
import assert from "node:assert/strict";
import { BUILT_IN_PRESETS, builtInPresetById } from "yt-dlp-transcript-common/views/builtInPresets";
import { buildWidgetQuery, parseWidgetConfig } from "./config";

// Run from the repo root with:
//   ./node_modules/.bin/tsx --test editor/app/widget/lib/builtInPresets.test.ts
//
// A preset is a stored LINK, so the only thing that can go wrong with one is
// that it stops meaning what it says: a renamed param, a changed default, a
// section dropped from the registry, a layout the current placement math would
// normalize differently. Each of those shows up as a query that does not
// re-serialize to itself, which is what this asserts.

// Parse a query string the way /widget does, then re-emit it.
function roundTrip(query: string): string {
  const params: Record<string, string> = {};
  for (const [k, v] of new URLSearchParams(query)) params[k] = v;
  return buildWidgetQuery(parseWidgetConfig(params));
}

test("every built-in preset parses and re-serializes to itself", () => {
  for (const preset of BUILT_IN_PRESETS) {
    assert.equal(roundTrip(preset.query), preset.query, `${preset.name} round-trips`);
  }
});

test("built-in ids and names are unique and non-empty", () => {
  const ids = new Set<string>();
  const names = new Set<string>();
  for (const p of BUILT_IN_PRESETS) {
    assert.ok(p.id, "id is set");
    assert.ok(p.name, "name is set");
    assert.ok(p.hint, "hint is set");
    assert.ok(!ids.has(p.id), `duplicate id ${p.id}`);
    assert.ok(!names.has(p.name), `duplicate name ${p.name}`);
    ids.add(p.id);
    names.add(p.name);
  }
});

test("Jobs is the way back to the default widget", () => {
  // The "start over" entry has to be the empty query, or a bare /widget link
  // would no longer be reachable from the menu.
  assert.equal(builtInPresetById("jobs")?.query, "");
  assert.equal(roundTrip(""), "");
});

test("Cockpit is the three-row layout, fill row included", () => {
  const config = parseWidgetConfig(
    Object.fromEntries(
      new URLSearchParams(builtInPresetById("cockpit")?.query ?? ""),
    ),
  );
  assert.equal(config.layout.rows.length, 3);
  assert.equal(config.layout.cols, 2);
  assert.equal(config.layout.rows[0].cells[0].span, 2);
  assert.equal(config.layout.rows[1].cells[0].flow, "row");
  assert.equal(config.layout.rows[2].size, "fill");
});

test("Glance is one dense rail and nothing else", () => {
  const config = parseWidgetConfig(
    Object.fromEntries(
      new URLSearchParams(builtInPresetById("glance")?.query ?? ""),
    ),
  );
  assert.equal(config.layout.rows.length, 1);
  assert.equal(config.layout.rows[0].cells.length, 1);
  assert.equal(config.layout.rows[0].cells[0].flow, "row");
  assert.equal(config.showTitles, false);
});

test("Wall is locked down: no controls, no gear", () => {
  const config = parseWidgetConfig(
    Object.fromEntries(new URLSearchParams(builtInPresetById("wall")?.query ?? "")),
  );
  assert.equal(config.controls, false);
  assert.equal(config.settings, false);
  assert.equal(config.showTitles, true);
  assert.equal(config.layout.cols, 3);
});