import { describe, expect, it } from "vitest";
import { createFixtureNotifications } from "$lib/notifications.svelte";
import { notifications } from "$lib/components/notifications/mock";
import type { NotificationSummary } from "$lib/components/notifications/types";

const rows: NotificationSummary[] = notifications.map((notification, index) => ({
	...notification,
	uri: `at://mock/notif/${index}`,
	read: index % 2 === 1
}));

const unreadRow = rows.find((row) => !row.read)!;
const readRow = rows.find((row) => row.read)!;
const baseline = rows.filter((row) => !row.read).length;

const readOf = (
	service: { overlay(rows: NotificationSummary[]): NotificationSummary[] },
	uri: string
) => service.overlay(rows).find((row) => row.uri === uri)!.read;

describe("notification read state", () => {
	it("moves the count with the row it marked", async () => {
		const service = createFixtureNotifications(rows);
		expect(service.unread).toBe(baseline);

		await service.setRead(unreadRow.uri, true);
		expect(service.unread).toBe(baseline - 1);
		expect(readOf(service, unreadRow.uri)).toBe(true);

		await service.setRead(unreadRow.uri, false);
		expect(service.unread).toBe(baseline);
		expect(readOf(service, unreadRow.uri)).toBe(false);
	});

	it("ignores a mark that changes nothing", async () => {
		const service = createFixtureNotifications(rows);

		await service.setRead(unreadRow.uri, true);
		await service.setRead(unreadRow.uri, true);
		await service.setRead(readRow.uri, true);

		expect(service.unread).toBe(baseline - 1);
	});

	it("empties the count and every known row on mark all read", async () => {
		const service = createFixtureNotifications(rows);

		await service.markAllRead();

		expect(service.unread).toBe(0);
		expect(service.overlay(rows).every((row) => row.read)).toBe(true);
	});
});