import { afterEach, beforeEach, expect, it, vi } from 'vitest';
import { newFixture, type Fixture } from '../helpers/fixture.js';
import { gameEvent, postTelemetry as post, roster } from '../helpers/telemetry.js';

let fixture: Fixture;
beforeEach(async () => {
    vi.resetModules();
    fixture = await newFixture();
    const { seedServerRegistry } = await import('../../src/lib/server/fleet/servers.js');
    await seedServerRegistry();
});
afterEach(async () => fixture.cleanup());

const payload = gameEvent('round_change', 17);

it('persists full player stats, broadcasts updates, and leaves RCON safety data untouched', async () => {
    const { subscribe } = await import('../../src/lib/server/pipeline/bus.js');
    const listener = vi.fn();
    const unsubscribe = subscribe(listener);
    expect(await (await post(payload)).json()).toEqual({ ok: true, telemetry: { ...payload, receivedAt: expect.any(String) } });
    expect(listener).toHaveBeenCalledWith({ type: 'server-telemetry', entries: [{ ...payload, receivedAt: expect.any(String) }] });
    unsubscribe();
    await post({ ...payload, round: 1 });
    const { closeDb } = await import('../../src/lib/server/db/index.js');
    closeDb();
    const { listTelemetry } = await import('../../src/lib/server/fleet/telemetry.js');
    expect(listTelemetry()).toEqual([{ ...payload, round: 1, receivedAt: expect.any(String) }]);
    const { getServer } = await import('../../src/lib/server/fleet/servers.js');
    expect(getServer(payload.server)?.last_players).toBeNull();
    const { GET } = await import('../../src/routes/api/events/servers/+server.js');
    const reader = (await GET()).body!.getReader();
    await reader.read();
    const snapshot = new TextDecoder().decode((await reader.read()).value);
    expect(snapshot).toContain('"round":1');
    expect(snapshot).toContain('"headshots":50');
    expect(snapshot).toContain('"guid":"12345678901234560"');
    await reader.cancel();
});

it('accepts all three events without an active beta and updates match lifecycle', async () => {
    const { getServer } = await import('../../src/lib/server/fleet/servers.js');
    const { listTelemetry } = await import('../../src/lib/server/fleet/telemetry.js');
    const start = gameEvent('game_start');
    expect((await post(start)).status).toBe(200);
    expect(listTelemetry()).toEqual([{ ...start, receivedAt: expect.any(String) }]);
    expect(getServer(start.server)?.game_started_at).toBeTruthy();
    expect(getServer(start.server)?.game_ended_at).toBeNull();
    expect((await post(payload)).status).toBe(200);
    const end = gameEvent('game_end', 18);
    expect((await post(end)).status).toBe(200);
    expect(getServer(start.server)?.game_ended_at).toBeTruthy();
    expect(listTelemetry()[0]).toMatchObject(end);
    await post(start);
    expect(listTelemetry()[0]).not.toHaveProperty('round');
    expect(getServer(start.server)?.game_ended_at).toBeNull();
    expect((await post(gameEvent('game_start', 0, 0))).status).toBe(200);
    expect((await post(gameEvent('game_end', 0, 0))).status).toBe(200);
});

it.each([null, [], {}, ...['boot', 'session_start', 'match_end', 'feature', 'other'].map(event => ({ ...payload, event })),
    { ...payload, map: '' }, { ...payload, map: undefined }, { ...payload, round: -1 },
    { ...payload, round: 1.5 }, { ...payload, round: '17' }, { ...payload, players: 4 }, { ...payload, players: null },
    { ...payload, players: [null] }, { ...payload, players: [{ name: 'Josh', guid: '123' }] },
    ...['name', 'guid', 'kills', 'headshots', 'downs', 'revives', 'score'].map(field => ({ ...payload, players: [{ ...roster(1)[0], [field]: null }] })),
    { ...payload, players: [{ ...roster(1)[0], guid: 12345678901234567 }] },
    { ...payload, players: [{ ...roster(1)[0], score: -1 }] }
])('rejects invalid telemetry: %j', async (body) => {
    expect((await post(body)).status).toBe(400);
});

it('rejects unknown and destroyed servers and non-JSON requests', async () => {
    expect((await post({ ...payload, server: 'unknown' })).status).toBe(404);
    expect((await post(payload, 'text/plain')).status).toBe(415);
    const { setServerField } = await import('../../src/lib/server/fleet/servers.js');
    setServerField(payload.server, 'destroyed_at', new Date().toISOString());
    expect((await post(payload)).status).toBe(404);
});

it('rejects malformed JSON', async () => {
    const { POST } = await import('../../src/routes/api/telemetry/+server.js');
    expect((await POST({ request: new Request('http://localhost/api/telemetry', {
        method: 'POST', headers: { 'Content-Type': 'application/json' }, body: '{'
    }) })).status).toBe(400);
});

it('migrates old round-only storage without fabricating player identities', async () => {
    const { db, closeDb } = await import('../../src/lib/server/db/index.js');
    db().exec('DROP TABLE server_telemetry; CREATE TABLE server_telemetry (server TEXT PRIMARY KEY, round INTEGER NOT NULL, players INTEGER NOT NULL, received_at TEXT NOT NULL)');
    db().prepare('INSERT INTO server_telemetry VALUES (?, ?, ?, ?)').run(payload.server, 99, 4, new Date().toISOString());
    closeDb();
    const { listTelemetry } = await import('../../src/lib/server/fleet/telemetry.js');
    expect(listTelemetry()).toEqual([]);
    await post(payload);
    closeDb();
    expect(listTelemetry()[0]).toMatchObject(payload);
});