import assert from "node:assert/strict";
import test, { describe } from "node:test";

import { slackMany, slackOne } from "./slack.ts";

const event = (overrides: Partial<{ name: string; slug: string; startDate: string }> = {}) => ({
  name: "Hack Night",
  slug: "hack-night",
  startDate: "2026-06-15T18:00:00Z",
  endDate: "2026-06-15T20:00:00Z",
  location: "Boise",
  lat: "43.615",
  lon: "-116.202",
  series: { id: 1, name: "Hack Night" },
  image: { path: "/img/hack-night.png" },
  ...overrides,
});

describe("slackOne", () => {
  test("includes the name and url of events", () => {
    for (const { name, slug } of [
      { name: "Hack Night", slug: "hack-night" },
      { name: "Lunch", slug: "lunch" },
      { name: "X", slug: "x" },
    ]) {
      const msg = slackOne(event({ name, slug }));
      assert.ok(msg.includes(name), `expected ${name} in: ${msg}`);
      assert.ok(
        msg.includes(`https://platform.openmeet.net/events/${slug}`),
        `expected url for ${slug} in: ${msg}`,
      );
    }
  });
});

describe("slackMany", () => {
  test("uses the empty-state message when no events", () => {
    const msg = slackMany([]);
    assert.ok(msg.includes("No events this week."), "expected 'no events' message from empty list");
  });

  test("includes each event's name and url", () => {
    const msg = slackMany([event({ name: "A", slug: "a" }), event({ name: "B", slug: "b" })]);
    assert.ok(msg.includes("A"), `expected A in: ${msg}`);
    assert.ok(msg.includes("https://platform.openmeet.net/events/a"), `expected a url in: ${msg}`);
    assert.ok(msg.includes("B"), `expected B in: ${msg}`);
    assert.ok(msg.includes("https://platform.openmeet.net/events/b"), `expected b url in: ${msg}`);
  });
});