import { describe, it, expect, beforeAll, afterAll } from "vitest";
import { startTestServer, createBoard, join, type TestServer } from "./helpers.js";

let server: TestServer;
beforeAll(async () => {
  server = await startTestServer();
});
afterAll(async () => {
  await server.close();
});

async function twoNotes(boardId: string, url: string) {
  const alice = await join(url, boardId, "alice", "Alice");
  const colId = alice.last!.columns[0].id;
  alice.emit("note:add", { columnId: colId, text: "A" });
  alice.emit("note:add", { columnId: colId, text: "B" });
  const st = await alice.waitFor((s) => s.notes.length === 2);
  const [a, b] = st.notes;
  return { alice, colId, a, b };
}

describe("Grupos", () => {
  it("agrupar dos notas crea un grupo votable", async () => {
    const board = await createBoard(server.url);
    const { alice, a, b } = await twoNotes(board.boardId, server.url);

    alice.emit("group:create", { noteId: b.id, targetNoteId: a.id });
    const grouped = await alice.waitFor((s) => s.groups.length === 1);
    const groupId = grouped.groups[0].id;
    expect(grouped.notes.every((n) => n.groupId === groupId)).toBe(true);

    // votar el grupo como unidad
    alice.emit("vote:toggle", { targetType: "group", targetId: groupId });
    const voted = await alice.waitFor((s) => s.votes.some((v) => v.targetId === groupId));
    expect(voted.votes.filter((v) => v.targetId === groupId)).toHaveLength(1);

    alice.close();
  });

  it("al agrupar se reinician los votos sueltos de las notas", async () => {
    const board = await createBoard(server.url);
    const { alice, a, b } = await twoNotes(board.boardId, server.url);

    alice.emit("vote:toggle", { targetType: "note", targetId: a.id });
    await alice.waitFor((s) => s.votes.some((v) => v.targetId === a.id));

    alice.emit("group:create", { noteId: b.id, targetNoteId: a.id });
    const after = await alice.waitFor((s) => s.groups.length === 1);
    expect(after.votes.filter((v) => v.targetId === a.id)).toHaveLength(0);

    alice.close();
  });

  it("sacar la última nota de un grupo lo elimina", async () => {
    const board = await createBoard(server.url);
    const { alice, colId, a, b } = await twoNotes(board.boardId, server.url);

    alice.emit("group:create", { noteId: b.id, targetNoteId: a.id });
    const grouped = await alice.waitFor((s) => s.groups.length === 1);
    expect(grouped.groups).toHaveLength(1);

    // saca una nota: el grupo sigue (1 miembro)
    alice.emit("note:move", { noteId: a.id, columnId: colId, groupId: null, position: 5 });
    await alice.waitFor((s) => s.notes.filter((n) => n.groupId).length === 1);

    // saca la última: el grupo se borra
    alice.emit("note:move", { noteId: b.id, columnId: colId, groupId: null, position: 6 });
    const empty = await alice.waitFor((s) => s.groups.length === 0);
    expect(empty.groups).toHaveLength(0);

    alice.close();
  });
});