import assert from "node:assert/strict";
import { randomUUID } from "node:crypto";
import { readFile, readdir } from "node:fs/promises";
import { PGlite } from "../.data/sql-verification/node_modules/@electric-sql/pglite/dist/index.js";

// Isolated PostgreSQL: fixtures never enter production rooms or leaderboards.
const db = new PGlite();
try {
  await db.exec(`create role anon; create role authenticated; create role service_role;
    create schema auth; create table auth.users(id uuid primary key);
    create function auth.uid() returns uuid language sql as $$ select null::uuid $$;
    create schema storage; create table storage.buckets(id text primary key,name text,public boolean,file_size_limit bigint);`);
  for (const file of (await readdir("supabase/migrations"))
    .filter((file) => file.endsWith(".sql"))
    .sort())
    await db.exec(await readFile(`supabase/migrations/${file}`, "utf8"));
  const account = (
    await db.query(
      "insert into auth.users values(gen_random_uuid()) returning id",
    )
  ).rows[0].id;
  const dataset = (
    await db.query(
      `insert into public.datasets(owner_id,name,source,bounds,state,panorama_count)
    values($1,'Multiplayer fixture','plugin','{"minX":0,"minZ":0,"maxX":64,"maxZ":64}','published',5) returning id`,
      [account],
    )
  ).rows[0].id;
  const manifest = {
    name: "Multiplayer fixture",
    bounds: { minX: 0, minZ: 0, maxX: 64, maxZ: 64 },
    viewpoints: Array.from({ length: 5 }, (_, i) => ({
      id: `point${i}`,
      x: 10 + i,
      z: 10 + i,
      y: 64,
    })),
  };
  const revision = (
    await db.query(
      "insert into public.revisions(dataset_id,asset_root,manifest) values($1,'fixture',$2) returning id",
      [dataset, JSON.stringify(manifest)],
    )
  ).rows[0].id;
  await db.query("update public.datasets set revision_id=$1 where id=$2", [
    revision,
    dataset,
  ]);
  const secret = (n) => String(n).padStart(64, "0");
  async function create(cap = 2) {
    return (
      await db.query(
        "select public.create_multiplayer_room($1,'hard','Host',$2,$3) as id",
        [dataset, cap, secret(1)],
      )
    ).rows[0].id;
  }
  async function act(room, who, type = "view", payload = {}) {
    return (
      await db.query("select public.multiplayer_action($1,$2,$3,$4) as room", [
        room,
        secret(who),
        type,
        JSON.stringify(payload),
      ])
    ).rows[0].room;
  }
  for (const cap of [1, 17, null])
    await assert.rejects(create(cap), /Choose between 2 and 16 players/);
  const room = await create();
  let view = await act(room, 1);
  const host = view.you;
  assert.equal(view.playerLimit, 2);
  assert.equal(view.players.length, 1);
  assert.equal(view.rounds.length, 5);
  assert.ok(view.rounds.every((turn) => turn.results.length === 0));
  const outsider = await act(room, 3);
  assert.equal(outsider.you, null);
  assert.deepEqual(outsider.players, []);
  assert.deepEqual(outsider.rounds, []);
  assert.ok(!JSON.stringify(view).includes('"viewpoint"'));
  assert.ok(!JSON.stringify(view).includes("access_hash"));
  await assert.rejects(act(room, 1, "start"), /Invite at least one friend/);
  await assert.rejects(act(room, 3, "start"), /membership permission/);
  const joined = await act(room, 2, "join", { name: "Friend" });
  const friend = joined.you;
  const chat = async (roomId, who, text = null, clientId = null) =>
    (
      await db.query("select public.multiplayer_chat($1,$2,$3,$4) as chat", [
        roomId,
        secret(who),
        text,
        clientId,
      ])
    ).rows[0].chat;
  const messageId = randomUUID();
  let messages = (await chat(room, 1, "Hello, friend!", messageId)).messages;
  assert.equal(messages[0].name, "Host");
  assert.equal(messages[0].playerId, host);
  assert.equal(messages[0].text, "Hello, friend!");
  assert.equal(typeof messages[0].id, "string");
  assert.deepEqual((await chat(room, 2)).messages, messages);
  assert.equal(
    (await chat(room, 1, "Hello, friend!", messageId)).messages.length,
    1,
    "retry is idempotent",
  );
  await assert.rejects(chat(room, 1, "Spam", randomUUID()), /Too many chat/);
  await assert.rejects(chat(room, 3), /Chat permission/);
  await assert.rejects(chat(room, 3, "Spoof", randomUUID()), /Chat permission/);
  for (const text of ["   ", "x".repeat(501), "x\nname", "x\u202e", "x\u0085"])
    await assert.rejects(chat(room, 2, text, randomUUID()), /Invalid chat/);
  await assert.rejects(chat(room, 2, "Missing nonce"), /Invalid chat/);
  messages = (
    await chat(room, 2, "Привет (: <script>alert(1)</script>", randomUUID())
  ).messages;
  assert.equal(messages[1].name, "Friend");
  assert.equal(messages[1].text, "Привет (: <script>alert(1)</script>");
  assert.ok(!JSON.stringify(messages).includes("access_hash"));
  assert.ok(!JSON.stringify(messages).includes("viewpoint"));
  const otherRoom = await create();
  assert.deepEqual(
    (await chat(otherRoom, 1)).messages,
    [],
    "room histories stay separate",
  );
  assert.equal(
    (await act(room, 2, "join", { name: "Changed name" })).you,
    friend,
  );
  await assert.rejects(act(room, 3, "join", { name: "Extra" }), /room is full/);
  await assert.rejects(act(room, 2, "start"), /owner permission/);
  view = await act(room, 1, "start");
  assert.equal(view.status, "loading");
  await assert.rejects(
    act(room, 3, "join", { name: "Late" }),
    /already started/,
  );
  await assert.rejects(
    act(room, 1, "guess", { round: 0, x: 10, z: 10 }),
    /Round is not active/,
  );
  assert.equal((await act(room, 1, "ready", { round: 0 })).status, "loading");
  view = await act(room, 2, "ready", { round: 0 });
  assert.equal(view.status, "playing");
  const deadline = view.rounds[0].deadline;
  assert.equal(
    (await chat(room, 1)).messages.length,
    2,
    "chat persists into the game",
  );
  assert.equal(
    (await act(room, 1, "ready", { round: 0 })).rounds[0].deadline,
    deadline,
  );
  await assert.rejects(
    act(room, 1, "guess", { round: 0, x: 65, z: 0 }),
    /Guess outside map/,
  );
  const location = (
    await db.query(
      "select viewpoint from public.multiplayer_rounds where room_id=$1 and round_number=0",
      [room],
    )
  ).rows[0].viewpoint;
  view = await act(room, 1, "guess", {
    round: 0,
    x: location.x,
    z: location.z,
  });
  assert.equal(view.status, "playing");
  assert.deepEqual(view.rounds[0].results, []);
  assert.ok(
    view.players.every((player) => player.total === 0),
    "scores concealed until everyone finishes",
  );
  assert.deepEqual(view.myGuess, { x: location.x, z: location.z });
  await act(room, 1, "guess", { round: 0, x: 0, z: 0 });
  assert.equal(
    (
      await db.query(
        "select count(*)::integer as count from public.multiplayer_guesses where room_id=$1 and player_id=$2",
        [room, host],
      )
    ).rows[0].count,
    1,
  );
  view = await act(room, 2, "guess", { round: 0, x: 0, z: 0 });
  assert.equal(view.status, "results");
  assert.equal(
    view.rounds[0].results.find((result) => result.playerId === host).score,
    5000,
  );
  assert.ok(
    view.rounds[0].results.find((result) => result.playerId === friend).score <
      5000,
  );
  await assert.rejects(act(room, 2, "next", { round: 0 }), /owner permission/);
  assert.equal(
    (await act(room, 1, "guess", { round: 0, x: 0, z: 0 })).status,
    "results",
    "retry cannot alter a submitted guess",
  );
  for (let round = 1; round < 5; round++) {
    await act(room, 1, "next", { round: round - 1 });
    await act(room, 1, "ready", { round });
    await act(room, 2, "ready", { round });
    const point = (
      await db.query(
        "select viewpoint from public.multiplayer_rounds where room_id=$1 and round_number=$2",
        [room, round],
      )
    ).rows[0].viewpoint;
    await act(room, 1, "guess", { round, x: point.x, z: point.z });
    if (round === 2) {
      await db.query(
        "update public.multiplayer_rounds set deadline=clock_timestamp()-interval '1 second' where room_id=$1 and round_number=$2",
        [room, round],
      );
      view = await act(room, 2, "guess", { round, x: point.x, z: point.z });
      assert.equal(
        view.rounds[round].results.find((result) => result.playerId === friend)
          .score,
        0,
      );
      assert.equal(
        view.rounds[round].results.find((result) => result.playerId === friend)
          .timedOut,
        true,
      );
    } else view = await act(room, 2, "guess", { round, x: 0, z: 0 });
  }
  assert.equal(view.status, "finished");
  assert.equal(
    (await chat(room, 2)).messages.length,
    2,
    "chat remains available at final standings",
  );
  assert.equal(view.players[0].id, host);
  assert.equal(view.players[0].total, 25000);
  assert.equal(view.players[0].rank, 1);
  assert.equal(view.players[1].rank, 2);
  assert.equal(view.rounds.flatMap((turn) => turn.results).length, 10);

  const capacity = await create(16);
  for (let n = 2; n <= 16; n++)
    await act(capacity, n, "join", { name: `Player ${n}` });
  await assert.rejects(
    act(capacity, 17, "join", { name: "Overflow" }),
    /room is full/,
  );
  assert.equal((await act(capacity, 1)).playerCount, 16);
  const removed = (await act(capacity, 16)).you;
  await act(capacity, 1, "kick", { playerId: removed });
  await assert.rejects(chat(capacity, 16), /Chat permission/);
  assert.equal((await act(capacity, 16)).you, null);
  await act(capacity, 17, "join", { name: "Replacement" });
  await act(capacity, 1, "leave");
  await assert.rejects(
    chat(capacity, 1, "Left", randomUUID()),
    /Chat permission/,
  );
  assert.equal(
    (await act(capacity, 2)).hostId,
    (await act(capacity, 2)).you,
    "ownership transfers when host leaves",
  );
  await assert.rejects(
    act(capacity, 18, "join", { name: "player 2" }),
    /name is already taken/,
  );

  const stalled = await create();
  await act(stalled, 2, "join", { name: "Offline" });
  await act(stalled, 1, "start");
  await act(stalled, 1, "ready", { round: 0 });
  await db.query(
    "update public.multiplayer_rooms set transition_at=clock_timestamp()-interval '1 second' where id=$1",
    [stalled],
  );
  assert.equal(
    (await act(stalled, 1)).status,
    "playing",
    "offline loader cannot block the match",
  );
  await db.query(
    "update public.multiplayer_rounds set deadline=clock_timestamp()-interval '1 second' where room_id=$1 and round_number=0",
    [stalled],
  );
  view = await act(stalled, 1);
  assert.equal(view.status, "results");
  assert.ok(
    view.players.every((player) => player.rank === 1),
    "equal totals share a rank",
  );
  await db.query(
    "update public.multiplayer_rooms set transition_at=clock_timestamp()-interval '1 second' where id=$1",
    [stalled],
  );
  assert.equal(
    (await act(stalled, 1)).round,
    1,
    "rounds progress without host clicks",
  );
  await act(stalled, 2, "leave");
  await act(stalled, 1, "ready", { round: 1 });
  const point = (
    await db.query(
      "select viewpoint from public.multiplayer_rounds where room_id=$1 and round_number=1",
      [stalled],
    )
  ).rows[0].viewpoint;
  view = await act(stalled, 1, "guess", { round: 1, x: point.x, z: point.z });
  assert.equal(view.status, "results", "departed players cannot block scoring");
  await act(stalled, 1, "close");
  await assert.rejects(chat(stalled, 1), /closed or expired/);
  assert.equal((await act(stalled, 1)).status, "closed");

  const expired = await create();
  await db.query(
    "update public.multiplayer_rooms set created_at=now()-interval '25 hours' where id=$1",
    [expired],
  );
  await assert.rejects(chat(expired, 1), /closed or expired/);
  const history = await create();
  const historyHost = (await act(history, 1)).you;
  await db.query(
    `insert into public.multiplayer_messages(room_id,player_id,client_id,display_name,body,created_at)
    select $1,$2,gen_random_uuid(),'Host','message ' || n,now()-interval '2 minutes' from generate_series(1,120) n`,
    [history, historyHost],
  );
  const recent = (await chat(history, 1)).messages;
  assert.equal(recent.length, 100);
  assert.equal(recent[0].text, "message 21");
  assert.equal(recent[99].text, "message 120");
  await db.query(
    "update public.multiplayer_messages set created_at=clock_timestamp()-interval '2 seconds' where room_id=$1",
    [history],
  );
  await assert.rejects(
    chat(history, 1, "Minute flood", randomUUID()),
    /Too many chat/,
  );

  for (const role of ["anon", "authenticated"]) {
    await db.exec(`set role ${role}`);
    for (const table of [
      "multiplayer_rooms",
      "multiplayer_players",
      "multiplayer_rounds",
      "multiplayer_guesses",
      "multiplayer_messages",
    ])
      await assert.rejects(
        db.query(`select * from public.${table}`),
        /permission denied/,
      );
    await assert.rejects(act(room, 1), /permission denied/);
    await assert.rejects(chat(room, 1), /permission denied/);
    await assert.rejects(create(), /permission denied/);
    await db.exec("reset role");
  }
  console.log(
    "Multiplayer SQL checks passed: room chat privacy, membership revocation, message validation, bounded history, rate limits, retries, expiration, 16-player cap, synchronized rounds, and client-role isolation.",
  );
} finally {
  await db.close();
}