// Tests for the build's half of the deck: the framing filters, the regions the
// overlay is placed by, the footer a card reserves, and the chapter name. The
// geometry itself is deck.mjs's and is tested there; these check the build
// reads it rather than restating it.
//
// Run with: pnpm test:scripts
import assert from "node:assert/strict";
import test from "node:test";
import path from "node:path";

import { chapterTitle, chromeRegions, concatListText, deckFraming, deckFramingFilter, sameConcatList } from "./build-video.mjs";
import { deckGeometry } from "./deck.mjs";
import { reservedFooterHeight } from "./render-cards.mjs";

const PALETTE = { bg: "#15121c", fg: "#ece8f4", muted: "#9a93ad", accent: "#7c5cff", amber: "#f2b84b" };
const BASE = { width: 1920, height: 1080, fps: 30, palette: PALETTE };
const deck = (d = {}) => ({ ...BASE, chrome: { engine: "hyperframes", layout: "deck", deck: d } });

test("deckFraming: the default box is 1574x886 at (173,2), the rest is ground", () => {
  const f = deckFraming(deck());
  assert.deepEqual(f.box, { x: 173, y: 2, width: 1574, height: 886 });
  assert.deepEqual(f.fit, [
    "scale=1574:886:force_original_aspect_ratio=decrease",
    `pad=1574:886:(ow-iw)/2:(oh-ih)/2:color=${PALETTE.bg}`,
  ]);
  assert.deepEqual(f.place, [`pad=1920:1080:173:2:color=${PALETTE.bg}`, "setsar=1", "fps=30"]);
});

test("deckFraming: follows deckGeometry for other settings, never its own numbers", () => {
  const r = deck({ height: 240, footageScale: 0.7 });
  const g = deckGeometry(r);
  const f = deckFraming(r);
  assert.deepEqual(f.box, g.footage);
  assert.equal(f.place[0], `pad=1920:1080:${g.footage.x}:${g.footage.y}:color=${PALETTE.bg}`);
  // The bottom of the box sits at or above the deck's top edge.
  assert.ok(g.footage.y + g.footage.height <= g.deck.y);
});

test("deckFramingFilter: fit then place, one chain", () => {
  assert.equal(
    deckFramingFilter(deck()),
    [
      "scale=1574:886:force_original_aspect_ratio=decrease",
      `pad=1574:886:(ow-iw)/2:(oh-ih)/2:color=${PALETTE.bg}`,
      `pad=1920:1080:173:2:color=${PALETTE.bg}`,
      "setsar=1",
      "fps=30",
    ].join(","),
  );
});

test("reservedFooterHeight: the deck reserves nothing over hidden cards, its height over shown ones", () => {
  assert.equal(reservedFooterHeight(deck()), 0);
  assert.equal(reservedFooterHeight(deck({ overCards: "hide" })), 0);
  assert.equal(reservedFooterHeight(deck({ overCards: "show" })), 190);
  assert.equal(reservedFooterHeight(deck({ overCards: "show", height: 240 })), 240);
});

test("reservedFooterHeight: without a deck, unchanged", () => {
  assert.equal(reservedFooterHeight(BASE), 100);
  assert.equal(reservedFooterHeight({ ...BASE, footerHeight: 92 }), 92);
  assert.equal(reservedFooterHeight({ ...BASE, chromeEngine: "hyperframes" }), 200);
  assert.equal(reservedFooterHeight({ ...BASE, chromeEngine: "hyperframes", chart: { height: 240 } }), 240);
});

test("chromeRegions: the deck is one full-width region at the bottom", () => {
  assert.deepEqual(chromeRegions(deck(), "/o/sourced"), [
    { name: "deck", frames: "/o/sourced/chrome/deck-frames", x: 0, y: 890, width: 1920, height: 190 },
  ]);
  assert.deepEqual(chromeRegions(deck({ height: 240 }), "/o")[0], {
    name: "deck", frames: "/o/chrome/deck-frames", x: 0, y: 840, width: 1920, height: 240,
  });
});

test("chromeRegions: the chart band's branch is untouched", () => {
  assert.deepEqual(chromeRegions({ ...BASE, chromeEngine: "hyperframes" }, "/o"), [
    { name: "chart", frames: "/o/chrome/chart-frames", x: 0, y: 880, width: 1920, height: 200 },
  ]);
});

test("chapterTitle: chapter, then (under the deck) the on-screen title, then the derived line", async () => {
  const PROV = { siteOrigin: "https://example.pages.dev", channelSlug: "chan" };
  const DECK = { deck: true };
  // A clip with an on-screen title under the deck never reaches the metadata
  // lookup, so this needs no cue source and no network.
  const clip = { type: "clip", id: "c01", video: "abc", start: 1, end: 9, onscreen: { title: "County says yes" } };
  assert.equal(await chapterTitle(clip, 0, PROV, DECK), "County says yes");
  assert.equal(await chapterTitle({ ...clip, chapter: "Authored" }, 0, PROV, DECK), "Authored");
  const card = { type: "card", id: "t00", heading: "The heading", title: "The title" };
  assert.equal(await chapterTitle(card, 0, PROV, DECK), "The title");
  assert.equal(await chapterTitle({ ...card, onscreen: { title: "On screen" } }, 0, PROV, DECK), "On screen");
  assert.equal(await chapterTitle({ type: "card", id: "x" }, 4, PROV, DECK), "Card 5");
  // A subtitle alone is not a title.
  assert.equal(await chapterTitle({ ...card, onscreen: { subtitle: "only" } }, 0, PROV, DECK), "The title");
  // Without the deck an on-screen title is not drawn, so it names no chapter:
  // a manifest without render.chrome builds exactly as it did.
  assert.equal(await chapterTitle({ ...card, onscreen: { title: "On screen" } }, 0, PROV), "The title");
  assert.equal(await chapterTitle({ ...card, onscreen: { title: "On screen" } }, 0, PROV, { deck: false }), "The title");
});

test("sameConcatList: a cached hard-cut concat is reused only for the same segments in the same order", () => {
  const segs = ["out/sourced/segments/c01.mp4", "out/sourced/segments/c02.mp4", "out/sourced/segments/c03.mp4"];
  const recorded = concatListText(segs);
  assert.equal(sameConcatList(recorded, segs), true);
  // Reordered: same files, same total length -- the case length and age miss.
  assert.equal(sameConcatList(recorded, [segs[1], segs[0], segs[2]]), false);
  assert.equal(sameConcatList(recorded, segs.slice(0, 2)), false);
  assert.equal(sameConcatList(recorded, [...segs, "out/sourced/segments/c04.mp4"]), false);
  // No record (a concat made before this check existed) is never reused.
  assert.equal(sameConcatList(null, segs), false);
  // Absolute and relative spellings of the same files are the same list.
  assert.equal(sameConcatList(recorded, segs.map((x) => path.resolve(x))), true);
});