import assert from "node:assert/strict";
import test from "node:test";
import { DiscordClient, DiscordDeliveryError } from "../lib/discord-client";
import {
  deliverTournamentAnnouncement,
  tournamentAnnouncementMessage,
  TOURNAMENT_NEWS_CHANNEL,
  TOURNAMENT_EVENT_ROLES,
  type TournamentAnnouncementJob,
  type TournamentAnnouncementSource,
} from "../lib/tournament-discord";

const now = Date.parse("2026-10-18T10:00:00Z");
const id = "00000000-0000-4000-8000-000000000001";
const source: TournamentAnnouncementSource = {
  id,
  name: "Cave cup",
  owner: "Pavel",
  starts_at: new Date(now + 15 * 60000).toISOString(),
  server_timezone: "UTC",
  player_limit: 32,
  round_count: 3,
  round_time_seconds: 300,
  timer_mode: "shared",
  status: "scheduled",
  announce_discord: true,
};
const job: TournamentAnnouncementJob = {
  id,
  tournament_id: id,
  state: "sending",
  attempts: 1,
  next_attempt_at: new Date(now).toISOString(),
  lease_owner: id,
  lease_until: new Date(now + 120000).toISOString(),
  channel_id: null,
  message_id: null,
  sent_at: null,
  last_error: null,
};

test("tournament Discord announcements pin their channel, public URL, explicit role mentions and stable nonce", async () => {
  const unsafe = {
    ...source,
    name: "Cup @everyone <@123> [bad](https://evil.example)",
    owner: "Owner <@&999>",
  };
  const message = tournamentAnnouncementMessage(id, unsafe);
  assert.deepEqual(message.allowed_mentions, {
    roles: [...TOURNAMENT_EVENT_ROLES],
    users: [],
    replied_user: false,
  });
  assert.ok(
    message.content.startsWith(
      TOURNAMENT_EVENT_ROLES.map((role) => `<@&${role}>`).join(", "),
    ),
  );
  assert.ok(message.content.includes(`https://minegeo.site/tournaments/${id}`));
  assert.ok(!message.content.includes("Cup @everyone <@123>"));
  assert.match(
    message.embeds[0].fields.find(
      (field) => field.name === "Starts · server time",
    )!.value,
    /UTC/,
  );
  assert.match(
    message.embeds[0].fields.find((field) => field.name === "Format")!.value,
    /3 tournament rounds · 5 mini-rounds each/,
  );
  assert.equal(message.nonce, tournamentAnnouncementMessage(id, source).nonce);
  assert.notEqual(
    message.nonce,
    tournamentAnnouncementMessage("another-event", source).nonce,
  );
  assert.throws(
    () =>
      tournamentAnnouncementMessage(id, { ...source, id: "../../elsewhere" }),
    /Invalid tournament link/,
  );
  const client = new DiscordClient("test-token", async (url, init) => {
    assert.equal(
      url,
      `https://discord.com/api/v10/channels/${TOURNAMENT_NEWS_CHANNEL}/messages`,
    );
    assert.deepEqual(
      JSON.parse(String(init?.body)).allowed_mentions,
      message.allowed_mentions,
    );
    return Response.json({
      id: "223456789012345678",
      channel_id: TOURNAMENT_NEWS_CHANNEL,
    });
  });
  assert.equal(
    await client.send(TOURNAMENT_NEWS_CHANNEL, message),
    "223456789012345678",
  );
});

test("tournament announcement timer describes shared and per-mini-round budgets", () => {
  const timer = (value: TournamentAnnouncementSource) =>
    tournamentAnnouncementMessage(id, value).embeds[0].fields.find(
      (field) => field.name === "Round timer",
    )!.value;
  assert.equal(timer(source), "300 seconds shared across all 5 mini-rounds");
  assert.equal(
    timer({ ...source, timer_mode: "perMini", round_time_seconds: 90 }),
    "90 seconds per mini-round",
  );
  assert.equal(
    timer({ ...source, round_time_seconds: 3000 }),
    "3000 seconds shared across all 5 mini-rounds",
  );
});

async function deliver(
  value: TournamentAnnouncementSource | null,
  failure?: Error,
  attempts = 1,
) {
  const patches: Partial<TournamentAnnouncementJob>[] = [];
  const sends: string[] = [];
  await deliverTournamentAnnouncement(
    { ...job, attempts },
    {
      now: () => now,
      load: async () => value,
      client: {
        send: async (channel) => {
          sends.push(channel);
          if (failure) throw failure;
          return "223456789012345678";
        },
      },
      finish: async (patch) => {
        patches.push(patch);
      },
    },
  );
  return { patches, sends };
}

test("only opted-in scheduled tournaments are announced during their last15minutes", async () => {
  for (const value of [
    null,
    { ...source, announce_discord: false },
    { ...source, status: "cancelled" },
    { ...source, status: "running" },
    { ...source, starts_at: new Date(now).toISOString() },
    { ...source, id: "different" },
  ]) {
    const result = await deliver(value);
    assert.equal(result.sends.length, 0);
    assert.equal(result.patches[0].state, "skipped");
    assert.equal(result.patches[0].lease_owner, null);
  }
  const sent = await deliver(source);
  assert.deepEqual(sent.sends, [TOURNAMENT_NEWS_CHANNEL]);
  assert.equal(sent.patches[0].state, "sent");
  assert.equal(sent.patches[0].sent_at, new Date(now).toISOString());
  assert.equal(
    (
      await deliver({
        ...source,
        starts_at: new Date(now + 60000).toISOString(),
      })
    ).patches[0].state,
    "sent",
  );
});

test("a rescheduled tournament releases its old lease until15minutes before its new start", async () => {
  const result = await deliver({
    ...source,
    starts_at: new Date(now + 2 * 3600000).toISOString(),
  });
  assert.equal(result.sends.length, 0);
  assert.equal(result.patches[0].state, "pending");
  assert.equal(
    result.patches[0].next_attempt_at,
    new Date(now + 105 * 60000).toISOString(),
  );
});

test("Discord rate limits retry durably and configuration failures stop after safe errors", async () => {
  const limited = await deliver(
    source,
    new DiscordDeliveryError("Discord rate limit.", 180),
  );
  assert.equal(limited.patches[0].state, "pending");
  assert.equal(
    limited.patches[0].next_attempt_at,
    new Date(now + 180000).toISOString(),
  );
  assert.equal(limited.patches[0].lease_until, null);
  assert.equal(
    (
      await deliver(
        source,
        new DiscordDeliveryError("Missing permissions.", 60, true),
      )
    ).patches[0].state,
    "failed",
  );
  assert.equal(
    (await deliver(source, new Error("secret request body"))).patches[0]
      .last_error,
    "Tournament announcement could not be confirmed. Delivery will retry.",
  );
  assert.equal(
    (await deliver(source, new DiscordDeliveryError("Retry."), 8)).patches[0]
      .state,
    "failed",
  );
});