import { afterEach, describe, expect, it, vi } from 'vitest';
import { render } from 'svelte/server';
import { get, writable } from 'svelte/store';
import type { ComponentProps } from 'svelte';
import ServerCard from '../../src/lib/ui/components/ServerCard.svelte';
import { telemetryByServer, uiNow } from '../../src/lib/ui/stores/servers.js';
import { gameEvent } from '../helpers/telemetry.js';

vi.mock('$app/stores', () => ({
    page: writable({ url: new URL('http://localhost/?filter=occupied') })
}));
const name = 't5_zombie_theater_1';
const at = (age: number) => new Date(get(uiNow) - age).toISOString();
const telemetry = (round = 31, age = 1000) => ({
    ...gameEvent('heartbeat', round, 4, name),
    receivedAt: at(age)
});
function html(props: Partial<ComponentProps<typeof ServerCard>> = {}) {
    return render(ServerCard, {
        props: {
            name,
            health: 'online',
            players: 4,
            capacity: 4,
            telemetry: telemetry(),
            gameStartedAt: at(6_000_000),
            ...props
        }
    }).body.replaceAll(/<!--.*?-->/g, '');
}
afterEach(() => telemetryByServer.set(new Map()));

describe('compact server cards', () => {
    it('leads with identity and three labelled metrics, without healthy freshness or duplicate activity clocks', () => {
        const body = html({
            gametype: 'zom',
            activeSince: at(6_120_000),
            lastSeenAt: at(1000),
            longestMatch: true
        });
        expect(body).toContain('Kino Der Toten');
        expect(body).toContain('Lobby 1');
        expect(body).toContain('BO1');
        expect(body).toMatch(/<dt[^>]*>Players<\/dt>\s*<dd[^>]*>4<span[^>]*>\/4<\/span><\/dd>/);
        expect(body).toMatch(/<dt[^>]*>Round<\/dt>\s*<dd[^>]*>31<\/dd>/);
        expect(body).toMatch(/<dt[^>]*>Match time<\/dt>\s*<dd[^>]*>1h 40m<\/dd>/);
        expect(body).toContain('Longest match');
        expect(body).not.toMatch(/Last seen|Last reported|Zombies Classic|>Active</);
    });

    it('defaults to four lobby slots when capacity is unavailable, while preserving a reported limit', () => {
        for (const capacity of [null, undefined, 0, -1, 4.5, NaN, Infinity]) {
            const body = html({ players: 2, capacity });
            expect(body).toContain('title="4 player capacity"');
            expect(body).toMatch(/>2<span[^>]*>\/4<\/span>/);
            expect(body).not.toContain('/?');
        }
        expect(html({ players: 2, capacity: 8 })).toMatch(/>2<span[^>]*>\/8<\/span>/);
    });

    it('uses the newest fresh report while respecting explicit round data and match boundaries', () => {
        telemetryByServer.set(new Map([[name, telemetry(35, 1000)]]));
        expect(html({ telemetry: telemetry(31, 10_000) })).toMatch(
            /<dt[^>]*>Round<\/dt>\s*<dd[^>]*>35<\/dd>/
        );
        expect(html({ round: 40 })).toMatch(/<dt[^>]*>Round<\/dt>\s*<dd[^>]*>40<\/dd>/);
        expect(html({ round: null })).toMatch(/<dt[^>]*>Round<\/dt>\s*<dd[^>]*>—<\/dd>/);
        expect(html({ gameStartedAt: at(0) })).toMatch(/<dt[^>]*>Round<\/dt>\s*<dd[^>]*>—<\/dd>/);
        telemetryByServer.set(new Map());
        expect(html({ telemetry: telemetry(31, 100_000) })).toMatch(
            /<dt[^>]*>Round<\/dt>\s*<dd[^>]*>—<\/dd>/
        );
        expect(html({ gameEndedAt: at(1000), round: 40 })).toContain('Match ended');
        expect(html({ gameEndedAt: at(1000), round: 40 })).not.toMatch(/<dd[^>]*>40<\/dd>/);
    });

    it('gives the roster real column headers and formatted scores without repeating ping units', () => {
        const body = html({
            roster: [
                { num: 0, guid: 'one', name: 'Vexx', score: 99170, ping: 36 },
                { num: 1, guid: 'two', name: 'Connecting player', score: null, ping: 999 }
            ]
        });
        expect(body).toContain('aria-label="Current players"');
        expect(body).toMatch(/<th[^>]*scope="col"[^>]*>Player<\/th>/);
        expect(body).toContain('99,170');
        expect(body).toContain('Connecting');
        expect(body).not.toContain('36ms');
    });

    it('places Pin outside the only link and retains its pressed state and server name', () => {
        const body = html({ pinned: true, onPin: () => {} });
        expect(body).toMatch(/<article\b/);
        expect(body.match(/<a\b/g)).toHaveLength(1);
        expect(body.match(/<a\b[\s\S]*?<\/a>/)?.[0]).not.toContain('<button');
        expect(body).toContain('aria-pressed="true"');
        expect(body).toContain('aria-label="Unpin Kino Der Toten · Lobby 1"');
    });

    it('collapses empty healthy lobbies to readiness and empty duration', () => {
        const body = html({
            players: 0,
            inactiveSince: at(9 * 60_000),
            roster: [],
            compactEmpty: true
        });
        expect(body).toContain('Ready');
        expect(body).toContain('Empty for 9m 00s');
        expect(body).not.toContain('<dl');
        expect(body).not.toContain('<table');
        expect(body).not.toContain('Player roster unavailable');
    });
});