import {
  count,
  createUser,
  db,
  del,
  formWithFile,
  get,
  html,
  insertCategory,
  insertComment,
  insertDump,
  insertPlaylist,
  PNG,
  post,
  put,
  stubNetwork,
  test,
  TEST_DIR,
} from "../helpers.ts";
import type { Dump, DumpUrlMatch } from "../../../shared/dump.ts";
import type { PaginatedData } from "../../../shared/api.ts";
import type { Playlist } from "../../../shared/playlist.ts";
import type { PublicUser } from "../../../shared/user.ts";
import { assertEquals, assertExists, assertFalse } from "@std/assert";

const PAGE = html(`<title>Scraped title</title>
  <meta property="og:image" content="https://example.com/cover.jpg">`);

function readFile(path: string): Uint8Array | null {
  try {
    return Deno.readFileSync(`${TEST_DIR}/uploads/${path}`);
  } catch {
    return null;
  }
}

// ── Create ───────────────────────────────────────────────────────────────────

test("POST /api/dumps: a URL dump takes its title from the page", async () => {
  const user = await createUser();
  using _ = stubNetwork(() => PAGE.clone());
  const res = await post<Dump>("/api/dumps", {
    auth: user.auth,
    json: { url: "https://example.com/a?utm_source=x", comment: "look" },
  });
  assertEquals(res.status, 201);
  const dump = res.data;
  assertEquals(dump.kind, "url");
  assertEquals(dump.title, "Scraped title");
  assertEquals(dump.slug, "scraped-title");
  assertEquals(dump.userId, user.id);
  assertEquals(dump.ownerUsername, user.username);
  assertEquals(dump.isPrivate, false);
  assertEquals(dump.richContent?.thumbnailUrl, "https://example.com/cover.jpg");
  const row = db.prepare(`SELECT url, url_canonical FROM dumps WHERE id = ?;`)
    .get(dump.id) as { url: string; url_canonical: string };
  // The exact URL is kept; the canonical key drops the tracking parameter.
  assertEquals(row.url, "https://example.com/a?utm_source=x");
  assertEquals(row.url_canonical, "https://example.com/a");
});

test("POST /api/dumps: a typed title wins; an unreachable page still posts", async () => {
  const user = await createUser();
  {
    using _ = stubNetwork(() => PAGE.clone());
    const res = await post<Dump>("/api/dumps", {
      auth: user.auth,
      json: { url: "https://example.com/b", title: "  My title  " },
    });
    assertEquals(res.data.title, "My title");
  }
  {
    using _ = stubNetwork(() => {
      throw new TypeError("offline");
    });
    const res = await post<Dump>("/api/dumps", {
      auth: user.auth,
      json: { url: "https://www.offline.example/c" },
    });
    assertEquals(res.status, 201);
    assertEquals(res.data.title, "offline.example");
  }
});

test("POST /api/dumps: refuses bad URLs and bodies, and anonymous callers", async () => {
  const user = await createUser();
  using net = stubNetwork(() => PAGE.clone());
  for (
    const url of ["http://localhost/", "http://192.168.0.1/", "ftp://x/", "no"]
  ) {
    const res = await post("/api/dumps", { auth: user.auth, json: { url } });
    assertEquals(res.status, 400, url);
  }
  assertEquals(
    (await post("/api/dumps", { auth: user.auth, json: { nope: 1 } })).status,
    400,
  );
  assertEquals(
    (await post("/api/dumps", { json: { url: "https://example.com" } })).status,
    401,
  );
  assertEquals(net.calls.length, 0);
  assertEquals(count(`SELECT COUNT(*) as n FROM dumps;`), 0);
});

test("POST /api/dumps: categories are stored and deduplicated", async () => {
  const user = await createUser();
  const music = insertCategory({ slug: "music" });
  using _ = stubNetwork(() => PAGE.clone());
  const res = await post<Dump>("/api/dumps", {
    auth: user.auth,
    json: { url: "https://example.com/d", categoryIds: [music, music] },
  });
  assertEquals(res.status, 201);
  assertEquals(res.data.categoryIds, [music]);
  assertEquals(
    (await get<Dump>(`/api/dumps/${res.data.id}`)).data.categoryIds,
    [music],
  );
});

test("POST /api/dumps: an unknown category is refused and nothing is left behind", async () => {
  const user = await createUser();
  using _ = stubNetwork(() => PAGE.clone());
  const res = await post("/api/dumps", {
    auth: user.auth,
    json: { url: "https://example.com/e", categoryIds: ["no-such-category"] },
  });
  assertEquals(res.status, 400);
  assertEquals(count(`SELECT COUNT(*) as n FROM dumps;`), 0);
});

test("POST /api/dumps: a playlist category is refused", async () => {
  const user = await createUser();
  const lists = insertCategory({ slug: "mixes", kind: "playlist" });
  using _ = stubNetwork(() => PAGE.clone());
  const res = await post("/api/dumps", {
    auth: user.auth,
    json: { url: "https://example.com/e", categoryIds: [lists] },
  });
  assertEquals(res.status, 400);
  assertEquals(count(`SELECT COUNT(*) as n FROM dumps;`), 0);
});

test("POST /api/dumps: a file dump is stored and served back", async () => {
  const user = await createUser();
  const res = await post<Dump>("/api/dumps", {
    auth: user.auth,
    form: formWithFile(PNG, "pixel.png", "image/png", { comment: "tiny" }),
  });
  assertEquals(res.status, 201);
  const dump = res.data;
  assertEquals(dump.kind, "file");
  assertEquals(dump.title, "pixel.png");
  assertEquals(dump.fileMime, "image/png");
  assertEquals(dump.fileSize, PNG.byteLength);
  assertEquals(dump.comment, "tiny");
  assertEquals(readFile(`dumps/${dump.id}`), PNG);
  const file = await get(`/api/dumps/${dump.id}/file`);
  assertEquals(file.status, 200);
  assertEquals(file.bytes, PNG);
});

test("POST /api/dumps: file type, size of text fields, and a missing file", async () => {
  const user = await createUser();
  const exe = await post("/api/dumps", {
    auth: user.auth,
    form: formWithFile(PNG, "x.exe", "application/x-msdownload"),
  });
  assertEquals(exe.status, 400);
  const longTitle = await post("/api/dumps", {
    auth: user.auth,
    form: formWithFile(PNG, "x.png", "image/png", { title: "x".repeat(201) }),
  });
  assertEquals(longTitle.status, 400);
  const longComment = await post("/api/dumps", {
    auth: user.auth,
    form: formWithFile(PNG, "x.png", "image/png", {
      comment: "x".repeat(5001),
    }),
  });
  assertEquals(longComment.status, 400);
  const form = new FormData();
  form.set("comment", "no file");
  assertEquals(
    (await post("/api/dumps", { auth: user.auth, form })).status,
    400,
  );
  assertEquals(count(`SELECT COUNT(*) as n FROM dumps;`), 0);
});

test("POST /api/dumps: a file dump with an unknown category leaves nothing behind", async () => {
  const user = await createUser();
  const res = await post("/api/dumps", {
    auth: user.auth,
    form: formWithFile(PNG, "x.png", "image/png", {
      categoryIds: JSON.stringify(["nope"]),
    }),
  });
  assertEquals(res.status, 400);
  assertEquals(count(`SELECT COUNT(*) as n FROM dumps;`), 0);
});

test("POST /api/dumps: followers are notified of public dumps, not private ones", async () => {
  const poster = await createUser();
  const follower = await createUser();
  db.prepare(
    `INSERT INTO follows (id, follower_id, followed_user_id, created_at) VALUES (?, ?, ?, ?);`,
  ).run(crypto.randomUUID(), follower.id, poster.id, new Date().toISOString());
  using _ = stubNetwork(() => PAGE.clone());
  await post("/api/dumps", {
    auth: poster.auth,
    json: { url: "https://example.com/private", isPrivate: true },
  });
  assertEquals(count(`SELECT COUNT(*) as n FROM notifications;`), 0);
  const pub = await post<Dump>("/api/dumps", {
    auth: poster.auth,
    json: { url: "https://example.com/public" },
  });
  const notes = db.prepare(
    `SELECT user_id, type, data FROM notifications;`,
  ).all() as { user_id: string; type: string; data: string }[];
  assertEquals(notes.length, 1);
  assertEquals(notes[0].user_id, follower.id);
  assertEquals(notes[0].type, "user_dump_posted");
  assertEquals(JSON.parse(notes[0].data).dumpId, pub.data.id);
});

// ── Read ─────────────────────────────────────────────────────────────────────

test("GET /api/dumps/:id works by id only", async () => {
  const user = await createUser();
  const { id, slug } = insertDump({ userId: user.id, title: "Hello" });
  assertEquals((await get<Dump>(`/api/dumps/${id}`)).data.id, id);
  // A slug is only unique under its owner: it is read by page path.
  assertEquals((await get(`/api/dumps/${slug}`)).status, 404);
  assertEquals((await get(`/api/dumps/nope`)).status, 404);
  assertEquals((await get(`/api/dumps/${crypto.randomUUID()}`)).status, 404);
});

test("GET /api/dumps/:id: a private dump exists only for its owner", async () => {
  const owner = await createUser();
  const other = await createUser();
  const { id } = insertDump({ userId: owner.id, isPrivate: true });
  assertEquals(
    (await get(`/api/dumps/${id}`, { auth: owner.auth })).status,
    200,
  );
  assertEquals(
    (await get(`/api/dumps/${id}`, { auth: other.auth })).status,
    404,
  );
  assertEquals((await get(`/api/dumps/${id}`)).status, 404);
  for (const sub of ["voters", "related", "playlists", "comments"]) {
    assertEquals((await get(`/api/dumps/${id}/${sub}`)).status, 404, sub);
    assertEquals(
      (await get(`/api/dumps/${id}/${sub}`, { auth: owner.auth })).status,
      200,
      sub,
    );
  }
});

test("GET /api/dumps: newest first, paginated, private ones for the owner only", async () => {
  const owner = await createUser();
  const other = await createUser();
  for (let i = 0; i < 5; i++) {
    insertDump({
      userId: owner.id,
      title: `d${i}`,
      createdAt: new Date(Date.UTC(2024, 0, i + 1)).toISOString(),
    });
  }
  insertDump({
    userId: owner.id,
    title: "secret",
    isPrivate: true,
    createdAt: new Date(Date.UTC(2024, 0, 10)).toISOString(),
  });
  const page1 = await get<PaginatedData<Dump>>("/api/dumps?limit=2");
  assertEquals(page1.data.items.map((d) => d.title), [
    "d4",
    "d3",
  ]);
  assertEquals(page1.data.hasMore, true);
  // Pages are told apart by the row past the limit, not by a count.
  assertEquals(page1.data.total, undefined);
  const page3 = await get<PaginatedData<Dump>>("/api/dumps?limit=2&page=3");
  assertEquals(page3.data.items.length, 1);
  assertEquals(page3.data.hasMore, false);

  const mine = await get<PaginatedData<Dump>>("/api/dumps", {
    auth: owner.auth,
  });
  assertEquals(mine.data.items[0].title, "secret");
  assertEquals(mine.data.items.length, 6);
  assertEquals(
    (await get<PaginatedData<Dump>>("/api/dumps", { auth: other.auth })).data
      .items.length,
    5,
  );
});

test("GET /api/dumps?url=: matches on the canonical key, respects privacy", async () => {
  const owner = await createUser();
  const other = await createUser();
  insertDump({
    userId: owner.id,
    title: "public",
    url: "https://youtu.be/abc",
  });
  insertDump({
    userId: owner.id,
    title: "private",
    url: "https://www.youtube.com/watch?v=abc",
    isPrivate: true,
  });
  const q = encodeURIComponent("https://m.youtube.com/watch?v=abc&t=10");
  const anon = await get<DumpUrlMatch[]>(`/api/dumps?url=${q}`);
  assertEquals(anon.data.map((d) => d.title), [
    "public",
  ]);
  assertEquals(anon.data[0].ownerUsername, owner.username);
  const mine = await get<DumpUrlMatch[]>(`/api/dumps?url=${q}`, {
    auth: owner.auth,
  });
  assertEquals(mine.data.length, 2);
  assertEquals(
    (await get<DumpUrlMatch[]>(`/api/dumps?url=${q}`, {
      auth: other.auth,
    })).data
      .length,
    1,
  );
  assertEquals(
    (await get<DumpUrlMatch[]>(`/api/dumps?url=garbage`)).data,
    [],
  );
});

test("GET /api/dumps/:id/voters lists voters without private fields", async () => {
  const owner = await createUser();
  const voter = await createUser();
  const { id } = insertDump({ userId: owner.id });
  db.prepare(
    `INSERT INTO votes (dump_id, user_id, created_at) VALUES (?, ?, ?);`,
  ).run(id, voter.id, new Date().toISOString());
  const res = await get<PaginatedData<PublicUser>>(`/api/dumps/${id}/voters`);
  assertEquals(res.data.items.length, 1);
  assertEquals(res.data.items[0].username, voter.username);
  assertFalse("email" in res.data.items[0]);
  assertFalse("passwordHash" in res.data.items[0]);
});

test("GET /api/dumps/:id/related: links in both directions, hiding private ones", async () => {
  const user = await createUser();
  const other = await createUser();
  const target = insertDump({
    userId: user.id,
    title: "target",
    url: "https://x.test/t",
  });
  const secret = insertDump({
    userId: other.id,
    title: "secret",
    isPrivate: true,
  });
  using _ = stubNetwork(() => PAGE.clone());
  // A new dump whose comment links the target by another shape of its URL,
  // and the secret dump by its page — and itself, which is ignored.
  const src = await post<Dump>("/api/dumps", {
    auth: other.auth,
    json: {
      url: "https://example.com/src",
      comment:
        `see https://www.x.test/t/?utm_source=feed and http://anywhere${secret.path}#comment-x and http://gerbeur.test/@${other.username}/dumps/scraped-title`,
    },
  });
  const srcId = src.data.id;
  const fromSrc = await get<Dump[]>(`/api/dumps/${srcId}/related`);
  assertEquals(fromSrc.data.map((d) => d.title), [
    "target",
  ]);
  const fromSrcAsOwner = await get<Dump[]>(`/api/dumps/${srcId}/related`, {
    auth: other.auth,
  });
  assertEquals(fromSrcAsOwner.data.length, 2);
  const toTarget = await get<Dump[]>(`/api/dumps/${target.id}/related`);
  assertEquals(toTarget.data.map((d) => d.id), [srcId]);

  // Editing the comment away removes the links.
  await put(`/api/dumps/${srcId}`, { auth: other.auth, json: { comment: "" } });
  assertEquals((await get<Dump[]>(`/api/dumps/${target.id}/related`)).data, []);
});

test("GET /api/dumps/:id/playlists: public playlists, plus the viewer's private ones", async () => {
  const user = await createUser();
  const other = await createUser();
  const { id } = insertDump({ userId: user.id });
  const pub = insertPlaylist({ userId: user.id, title: "Public" });
  const priv = insertPlaylist({
    userId: user.id,
    title: "Private",
    isPublic: false,
  });
  for (const p of [pub, priv]) {
    db.prepare(
      `INSERT INTO playlist_dumps (playlist_id, dump_id, position, added_at) VALUES (?, ?, 0, ?);`,
    ).run(p.id, id, new Date().toISOString());
  }
  assertEquals(
    (await get<Playlist[]>(`/api/dumps/${id}/playlists`, { auth: other.auth }))
      .data
      .map((p) => p.title),
    ["Public"],
  );
  assertEquals(
    (await get<Playlist[]>(`/api/dumps/${id}/playlists`, { auth: user.auth }))
      .data
      .length,
    2,
  );
});

// ── Update ───────────────────────────────────────────────────────────────────

test("PUT /api/dumps/:id: a slug changes when sent, the old one stays an alias, 3 a day", async () => {
  const owner = await createUser();
  const mod = await createUser({ role: "moderator" });
  const { id } = insertDump({ userId: owner.id, title: "First" });
  const other = insertDump({ userId: owner.id, title: "Taken" });
  const byPath = (slug: string) =>
    get<Dump>(`/api/users/@${owner.username}/dumps/${slug}`, {
      auth: owner.auth,
    });
  const setSlug = (slug: string, auth = owner.auth) =>
    put<Dump>(`/api/dumps/${id}`, { auth, json: { slug } });

  assertEquals((await setSlug("Not A Slug")).status, 400);
  // Another dump's slug, current or former, is refused.
  assertEquals((await setSlug(other.slug)).status, 409);
  assertEquals((await setSlug("second")).data.slug, "second");
  // The old slug answers the dump, which carries its current one.
  assertEquals((await byPath("first")).data.slug, "second");
  assertEquals((await byPath("second")).data.id, id);
  // Taking back its own former slug swaps them; the limit counts the aliases
  // left, so a swap doesn't add to it.
  assertEquals((await setSlug("first")).data.slug, "first");
  assertEquals((await byPath("second")).data.slug, "first");
  assertEquals((await setSlug("third")).data.slug, "third");
  assertEquals((await setSlug("fourth")).data.slug, "fourth");
  // A fourth alias in a day is refused, but not to a moderator.
  assertEquals((await setSlug("fifth")).status, 429);
  assertEquals((await setSlug("fifth", mod.auth)).data.slug, "fifth");
  // Every former slug still leads to it, without chaining.
  for (const slug of ["first", "second", "third", "fourth", "fifth"]) {
    assertEquals((await byPath(slug)).data.slug, "fifth", slug);
  }
  // Deleting the dump frees its aliases.
  await del(`/api/dumps/${id}`, { auth: owner.auth });
  assertEquals(
    count(`SELECT COUNT(*) AS n FROM dump_slug_aliases WHERE dump_id = ?;`, id),
    0,
  );
  const reborn = insertDump({ userId: owner.id, title: "Second" });
  assertEquals(reborn.slug, "second");
});

test("PUT /api/dumps/:id: owner and moderator may edit, others may not", async () => {
  const owner = await createUser();
  const other = await createUser();
  const mod = await createUser({ role: "moderator" });
  const { id, slug } = insertDump({ userId: owner.id, title: "Old" });
  assertEquals(
    (await put(`/api/dumps/${id}`, { auth: other.auth, json: { title: "X" } }))
      .status,
    403,
  );
  assertEquals(
    (await put(`/api/dumps/${id}`, { json: { title: "X" } })).status,
    401,
  );
  const res = await put<Dump>(`/api/dumps/${id}`, {
    auth: owner.auth,
    json: { title: "New title", comment: "hello" },
  });
  assertEquals(res.status, 200);
  assertEquals(res.data.title, "New title");
  // A new title never changes the slug by itself.
  assertEquals(res.data.slug, slug);
  assertExists(res.data.updatedAt);
  const byMod = await put(`/api/dumps/${id}`, {
    auth: mod.auth,
    json: { title: "Moderated" },
  });
  assertEquals(byMod.status, 200);
  assertEquals((await get<Dump>(`/api/dumps/${id}`)).data.title, "Moderated");
});

test("PUT /api/dumps/:id: invalid input is 400, a new URL refetches metadata", async () => {
  const owner = await createUser();
  const { id } = insertDump({
    userId: owner.id,
    title: "Old",
    url: "https://a.test/",
  });
  assertEquals(
    (await put(`/api/dumps/${id}`, { auth: owner.auth, json: { title: " " } }))
      .status,
    400,
  );
  assertEquals(
    (await put(`/api/dumps/${id}`, {
      auth: owner.auth,
      json: { url: "http://127.0.0.1/" },
    })).status,
    400,
  );
  using net = stubNetwork(() => PAGE.clone());
  // Same URL: no fetch, title kept.
  await put(`/api/dumps/${id}`, { auth: owner.auth, json: { comment: "c" } });
  assertEquals(net.calls.length, 0);
  const moved = await put<Dump>(`/api/dumps/${id}`, {
    auth: owner.auth,
    json: { url: "https://b.test/?utm_medium=z" },
  });
  assertEquals(moved.data.title, "Scraped title");
  assertEquals(net.calls.length, 1);
  const row = db.prepare(`SELECT url_canonical FROM dumps WHERE id = ?;`).get(
    id,
  ) as {
    url_canonical: string;
  };
  assertEquals(row.url_canonical, "https://b.test");
});

test("PUT /api/dumps/:id: categories are replaced, or kept when omitted", async () => {
  const owner = await createUser();
  const a = insertCategory({ slug: "a" });
  const b = insertCategory({ slug: "b" });
  const { id } = insertDump({ userId: owner.id });
  await put(`/api/dumps/${id}`, {
    auth: owner.auth,
    json: { categoryIds: [a] },
  });
  const kept = await put<Dump>(`/api/dumps/${id}`, {
    auth: owner.auth,
    json: { title: "t" },
  });
  assertEquals(kept.data.categoryIds, [a]);
  const replaced = await put<Dump>(`/api/dumps/${id}`, {
    auth: owner.auth,
    json: { categoryIds: [b] },
  });
  assertEquals(replaced.data.categoryIds, [b]);
  const cleared = await put<Dump>(`/api/dumps/${id}`, {
    auth: owner.auth,
    json: { categoryIds: [] },
  });
  assertEquals(cleared.data.categoryIds, []);
});

test("PUT /api/dumps/:id: an unknown category changes nothing", async () => {
  const owner = await createUser();
  const a = insertCategory({ slug: "a" });
  const { id } = insertDump({ userId: owner.id, title: "Before" });
  await put(`/api/dumps/${id}`, {
    auth: owner.auth,
    json: { categoryIds: [a] },
  });
  const res = await put(`/api/dumps/${id}`, {
    auth: owner.auth,
    json: { title: "After", categoryIds: [a, "nope"] },
  });
  assertEquals(res.status, 400);
  const dump = (await get<Dump>(`/api/dumps/${id}`)).data;
  assertEquals(dump.title, "Before");
  assertEquals(dump.categoryIds, [a]);
});

test("PUT /api/dumps/:id/file: an unknown category keeps the old file", async () => {
  const owner = await createUser();
  const original = new TextEncoder().encode("original");
  const { id } = insertDump({
    userId: owner.id,
    title: "orig",
    fileName: "a.txt",
    fileData: original,
  });
  const res = await put(`/api/dumps/${id}/file`, {
    auth: owner.auth,
    form: formWithFile(PNG, "b.png", "image/png", {
      categoryIds: JSON.stringify(["nope"]),
    }),
  });
  assertEquals(res.status, 400);
  assertEquals(readFile(`dumps/${id}`), original);
  assertEquals((await get<Dump>(`/api/dumps/${id}`)).data.fileName, "a.txt");
});

test("PUT /api/dumps/:id: going private hides the dump from everyone else", async () => {
  const owner = await createUser();
  const { id } = insertDump({ userId: owner.id });
  await put(`/api/dumps/${id}`, {
    auth: owner.auth,
    json: { isPrivate: true },
  });
  assertEquals((await get(`/api/dumps/${id}`)).status, 404);
  await put(`/api/dumps/${id}`, {
    auth: owner.auth,
    json: { isPrivate: false },
  });
  assertEquals((await get(`/api/dumps/${id}`)).status, 200);
});

test("PUT /api/dumps/:id: going public notifies the poster's and its playlists' followers, once", async () => {
  const owner = await createUser();
  const fan = await createUser();
  const listener = await createUser();
  db.prepare(
    `INSERT INTO follows (id, follower_id, followed_user_id, created_at) VALUES (?, ?, ?, ?);`,
  ).run(crypto.randomUUID(), fan.id, owner.id, new Date().toISOString());
  const mix = insertPlaylist({ userId: owner.id, title: "Mix" });
  const hidden = insertPlaylist({
    userId: owner.id,
    title: "Hidden",
    isPublic: false,
  });
  await put(`/api/me/follow/playlists/${mix.id}`, { auth: listener.auth });
  const { id } = insertDump({ userId: owner.id, isPrivate: true });
  for (const p of [mix, hidden]) {
    await post(`/api/playlists/${p.id}/dumps/${id}`, { auth: owner.auth });
  }
  db.exec(`DELETE FROM notifications;`); // the follow notified the owner
  const setPrivate = (isPrivate: boolean) =>
    put(`/api/dumps/${id}`, { auth: owner.auth, json: { isPrivate } });

  await setPrivate(false);
  const notes = db.prepare(
    `SELECT user_id, type, data FROM notifications ORDER BY type;`,
  ).all() as { user_id: string; type: string; data: string }[];
  assertEquals(
    notes.map((n) => [n.user_id, n.type, JSON.parse(n.data).playlistId]),
    [
      [listener.id, "playlist_dump_added", mix.id],
      [fan.id, "user_dump_posted", undefined],
    ],
  );
  // Neither going private and public again nor an edit notifies twice.
  await setPrivate(true);
  await setPrivate(false);
  await put(`/api/dumps/${id}`, { auth: owner.auth, json: { title: "New" } });
  assertEquals(count(`SELECT COUNT(*) as n FROM notifications;`), 2);
});

test("PUT /api/dumps/:id: a file dump edits title, comment and privacy", async () => {
  const owner = await createUser();
  const { id } = insertDump({
    userId: owner.id,
    title: "file",
    fileName: "a.txt",
  });
  const res = await put<Dump>(`/api/dumps/${id}`, {
    auth: owner.auth,
    json: {
      title: "Renamed",
      comment: "c",
      isPrivate: true,
      url: "https://ignored.test",
    },
  });
  assertEquals(res.status, 200);
  assertEquals(res.data.title, "Renamed");
  assertEquals(res.data.isPrivate, true);
  assertEquals(res.data.url, undefined);
});

test("PUT /api/dumps/:id/file replaces a file dump's contents", async () => {
  const owner = await createUser();
  const other = await createUser();
  const { id } = insertDump({
    userId: owner.id,
    title: "orig",
    fileName: "a.txt",
  });
  const form = () =>
    formWithFile(PNG, "b.png", "image/png", { title: "Replaced" });
  assertEquals(
    (await put(`/api/dumps/${id}/file`, { auth: other.auth, form: form() }))
      .status,
    403,
  );
  const res = await put<Dump>(`/api/dumps/${id}/file`, {
    auth: owner.auth,
    form: form(),
  });
  assertEquals(res.status, 200);
  assertEquals(res.data.fileName, "b.png");
  assertEquals(res.data.title, "Replaced");
  assertEquals(readFile(`dumps/${id}`), PNG);

  const urlDump = insertDump({ userId: owner.id });
  assertEquals(
    (await put(`/api/dumps/${urlDump.id}/file`, {
      auth: owner.auth,
      form: form(),
    }))
      .status,
    400,
  );
});

test("PUT /api/dumps/:id/file: visibility changes with the file, or stays", async () => {
  const owner = await createUser();
  const other = await createUser();
  const { id } = insertDump({ userId: owner.id, fileName: "a.txt" });
  const replace = (fields: Record<string, string>) =>
    put<Dump>(`/api/dumps/${id}/file`, {
      auth: owner.auth,
      form: formWithFile(PNG, "b.png", "image/png", fields),
    });
  const visible = async () =>
    (await get(`/api/dumps/${id}`, { auth: other.auth })).status === 200;

  let res = await replace({ isPrivate: "true" });
  assertEquals(res.data.isPrivate, true);
  assertEquals(await visible(), false);
  assertEquals((await get(`/api/dumps/${id}/file`)).status, 404);
  // Left out, it stays private.
  res = await replace({});
  assertEquals(res.data.isPrivate, true);
  assertEquals(await visible(), false);
  res = await replace({ isPrivate: "false" });
  assertEquals(res.data.isPrivate, false);
  assertEquals(await visible(), true);
  // A refused replacement changes neither.
  res = await replace({ isPrivate: "true", categoryIds: '["nope"]' });
  assertEquals(res.status, 400);
  assertEquals(await visible(), true);
});

test("custom thumbnails: set, served, removed", async () => {
  const owner = await createUser();
  const other = await createUser();
  const { id } = insertDump({ userId: owner.id });
  assertEquals(
    (await put(`/api/dumps/${id}/thumbnail`, {
      auth: other.auth,
      form: formWithFile(PNG),
    })).status,
    403,
  );
  assertEquals(
    (await put(`/api/dumps/${id}/thumbnail`, {
      auth: owner.auth,
      form: formWithFile(
        new TextEncoder().encode("<svg/>"),
        "x.svg",
        "image/svg+xml",
      ),
    })).status,
    400,
  );
  const set = await put<Dump>(`/api/dumps/${id}/thumbnail`, {
    auth: owner.auth,
    form: formWithFile(PNG),
  });
  assertEquals(set.status, 200);
  assertEquals(set.data.thumbnailMime, "image/png");
  const thumb = await get(`/api/dumps/${id}/thumbnail`);
  assertEquals(thumb.status, 200);
  assertEquals(thumb.headers.get("content-type"), "image/png");
  assertEquals(thumb.bytes, PNG);

  const removed = await del<Dump>(`/api/dumps/${id}/thumbnail`, {
    auth: owner.auth,
  });
  assertEquals(removed.data.thumbnailMime, undefined);
  assertEquals(readFile(`thumbnails/${id}-custom`), null);
  // A URL dump without its own thumbnail has none to serve.
  assertEquals((await get(`/api/dumps/${id}/thumbnail`)).status, 404);
});

test("POST /api/dumps/:id/metadata: updates, or keeps what it had on failure", async () => {
  const owner = await createUser();
  const { id } = insertDump({
    userId: owner.id,
    title: "Kept",
    url: "https://example.com/r",
    richContent: {
      type: "generic",
      url: "https://example.com/r",
      title: "Kept",
    },
  });
  {
    using _ = stubNetwork(() => {
      throw new TypeError("down");
    });
    const res = await post<Dump>(`/api/dumps/${id}/metadata`, {
      auth: owner.auth,
    });
    assertEquals(res.status, 502);
    assertEquals((await get<Dump>(`/api/dumps/${id}`)).data.title, "Kept");
  }
  {
    using _ = stubNetwork(() => PAGE.clone());
    const res = await post<Dump>(`/api/dumps/${id}/metadata`, {
      auth: owner.auth,
    });
    assertEquals(res.status, 200);
    assertEquals(res.data.title, "Scraped title");
  }
  const file = insertDump({ userId: owner.id, fileName: "f.txt" });
  assertEquals(
    (await post(`/api/dumps/${file.id}/metadata`, { auth: owner.auth }))
      .status,
    400,
  );
});

// ── Delete ───────────────────────────────────────────────────────────────────

test("DELETE /api/dumps/:id removes the dump, its file and what hangs off it", async () => {
  const owner = await createUser();
  const other = await createUser();
  const mod = await createUser({ role: "moderator" });
  const { id } = insertDump({ userId: owner.id, fileName: "f.txt" });
  insertComment({ dumpId: id, userId: other.id });
  db.prepare(
    `INSERT INTO votes (dump_id, user_id, created_at) VALUES (?, ?, ?);`,
  )
    .run(id, other.id, new Date().toISOString());

  assertEquals(
    (await del(`/api/dumps/${id}`, { auth: other.auth })).status,
    403,
  );
  assertEquals(
    (await del(`/api/dumps/${id}`, { auth: owner.auth })).status,
    200,
  );
  assertEquals((await get(`/api/dumps/${id}`)).status, 404);
  assertEquals(readFile(`dumps/${id}`), null);
  assertEquals(count(`SELECT COUNT(*) as n FROM comments;`), 0);
  assertEquals(count(`SELECT COUNT(*) as n FROM votes;`), 0);

  const second = insertDump({ userId: owner.id });
  assertEquals(
    (await del(`/api/dumps/${second.id}`, { auth: mod.auth })).status,
    200,
  );
  assertEquals(
    (await del(`/api/dumps/${second.id}`, { auth: mod.auth })).status,
    404,
  );
});