import { expect, test } from "bun:test";
import { join } from "node:path";
import { readFile, stat } from "node:fs/promises";
import { extractFrame, probeDuration, putFile } from "../src/media";
import { renderPdf } from "../src/pdf";
import { makePdf, makeVideo, PYTHON, tmp } from "./fixtures";

const tools = { ffmpeg: "ffmpeg", ffprobe: "ffprobe" };

test("duration and frame extraction on a tiny clip", async () => {
  const d = await tmp();
  await makeVideo(join(d, "a.mp4"), 2);
  expect(await probeDuration(tools, join(d, "a.mp4"))).toBe(2);
  await extractFrame(tools, join(d, "a.mp4"), join(d, "out", "f.jpg"));
  expect((await stat(join(d, "out", "f.jpg"))).size).toBeGreaterThan(100);
});

test("putFile copies and links without touching the original", async () => {
  const d = await tmp();
  await makeVideo(join(d, "sp ace", "ö.mp4"), 1);
  const before = await readFile(join(d, "sp ace", "ö.mp4"));
  await putFile(join(d, "sp ace", "ö.mp4"), join(d, "c", "x.mp4"), "copy");
  await putFile(join(d, "sp ace", "ö.mp4"), join(d, "l", "x.mp4"), "link");
  expect(Buffer.compare(await readFile(join(d, "c", "x.mp4")), before)).toBe(0);
  expect((await stat(join(d, "l", "x.mp4"))).ino).toBe((await stat(join(d, "sp ace", "ö.mp4"))).ino);
});

test("renderPdf writes page images and text", async () => {
  const d = await tmp();
  await makePdf(join(d, "deck.pdf"), ["Hello alpha", "Second beta"]);
  const seen: number[] = [];
  const r = await renderPdf(PYTHON, join(d, "deck.pdf"), join(d, "out"), { onPage: (p) => seen.push(p) });
  expect(r.pages).toBe(2);
  expect(seen).toEqual([1, 2]);
  expect((await stat(join(d, "out", "p-002.jpg"))).size).toBeGreaterThan(100);
  const text = JSON.parse(await readFile(join(d, "out", "text.json"), "utf8"));
  expect(text[0].text).toContain("Hello alpha");
});