import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
import { newFixture, type Fixture } from '../helpers/fixture.js';
import { prepareNativeHost } from '../helpers/native-host.js';

vi.mock('../../src/lib/server/pipeline/worker.js', () => ({ kick: vi.fn(async () => {}) }));

let fixture: Fixture;
let prepared: Awaited<ReturnType<typeof prepareNativeHost>>;
const custom = 'registry.example/untrusted:latest';
const launch = {
    game: 't5' as const,
    gameMode: 'zombie' as const,
    mapSlug: 'theater',
    plutoKey: 'saved-key'
};

beforeEach(async () => {
    vi.resetModules();
    fixture = await newFixture([]);
    prepared = await prepareNativeHost();
});
afterEach(async () => {
    await fixture.cleanup();
});

async function cache(images: string[]) {
    const hosts = await import('../../src/lib/server/hosts/index.js');
    const host = hosts.getHost(prepared.host.id)!;
    hosts.heartbeat(host.id, { ...host.inventory, runtimeImages: images });
}

describe('runtime image launch policy', () => {
    it.each([false, true])(
        'rejects an uncached custom image at POST /api/servers (automatic: %s)',
        async (automatic) => {
            const { POST } = await import('../../src/routes/api/servers/+server.js');
            const response = await POST({
                request: new Request('https://controller.test/api/servers', {
                    method: 'POST',
                    headers: { 'Content-Type': 'application/json' },
                    body: JSON.stringify({
                        ...launch,
                        image: custom,
                        ...(automatic ? {} : { hostId: prepared.host.id })
                    })
                })
            });
            expect(response.status).toBe(400);
            expect(await response.json()).toMatchObject({
                error: expect.stringContaining('prepared by an admin')
            });
            const { db } = await import('../../src/lib/server/db/index.js');
            for (const table of ['native_creation_intents', 'server_deployments', 'server_keys']) {
                expect(db().prepare(`SELECT * FROM ${table}`).all()).toEqual([]);
            }
        }
    );

    it('allows the configured default before it is cached', async () => {
        await cache([]);
        const { queueNativeCreation } = await import('../../src/lib/server/provisioning/native.js');
        expect(queueNativeCreation(launch).ok).toBe(true);
    });

    it('accepts prepared images only on hosts that have them', async () => {
        await cache([custom]);
        const hosts = await import('../../src/lib/server/hosts/index.js');
        const other = hosts.createHost({ name: 'Unprepared host' });
        const { nativeLaunchSelection, nativeSelection } =
            await import('../../src/lib/server/provisioning/native.js');
        expect(nativeLaunchSelection({ hostId: prepared.host.id, image: custom }, 't5').image).toBe(
            custom
        );
        expect(nativeSelection({ image: custom }, 't5').hostId).toBe(prepared.host.id);
        expect(() => nativeLaunchSelection({ hostId: other.id, image: custom }, 't5')).toThrow(
            /prepared by an admin/
        );
        hosts.updateHost(prepared.host.id, { mode: 'disabled' });
        expect(() => nativeLaunchSelection({ image: custom }, 't5')).toThrow(
            /prepared by an admin/
        );
    });

    it('requires exact image references and does not treat a queued admin pull as cached', async () => {
        const hosts = await import('../../src/lib/server/hosts/index.js');
        hosts.queueHostOperation(prepared.host.id, 'runtime.pull', { image: custom });
        const { nativeLaunchSelection } =
            await import('../../src/lib/server/provisioning/native.js');
        expect(() => nativeLaunchSelection({ image: custom }, 't5')).toThrow(
            /prepared by an admin/
        );
        await cache([custom + '-other']);
        expect(() => nativeLaunchSelection({ image: custom }, 't5')).toThrow(
            /prepared by an admin/
        );
    });

    it('rechecks cached images when submitting a saved single-server preview', async () => {
        await cache([custom]);
        const { previewNativeCreation, queueNativeCreation } =
            await import('../../src/lib/server/provisioning/native.js');
        const preview = previewNativeCreation({ ...launch, image: custom });
        await cache([]);
        expect(queueNativeCreation({ ...launch, previewId: preview.id })).toMatchObject({
            ok: false,
            message: expect.stringContaining('prepared by an admin')
        });
    });

    it('rejects uncached collection images and rechecks saved previews before writing any jobs', async () => {
        const { saveBlueprint } = await import('../../src/lib/server/fleet/launch-recipes.js');
        const { previewCollection, queueCollection } =
            await import('../../src/lib/server/fleet/collections.js');
        const blueprint = saveBlueprint({
            name: 'Image policy',
            entries: [{ game: 't5', mapSlug: 'theater', count: 2 }]
        });
        expect(() => previewCollection(blueprint.id, 'fill', { image: custom })).toThrow(
            /prepared by an admin/
        );
        await cache([custom]);
        const preview = previewCollection(blueprint.id, 'fill', { image: custom });
        const keys = Object.fromEntries(
            preview.servers.map((server) => [server.name!, 'key-' + server.name])
        );
        await cache([]);
        expect(() => queueCollection({ previewId: preview.id, keys })).toThrow(
            /prepared by an admin/
        );
        const { db } = await import('../../src/lib/server/db/index.js');
        for (const table of [
            'server_launch_collections',
            'native_creation_intents',
            'server_deployments',
            'server_keys'
        ]) {
            expect(db().prepare(`SELECT * FROM ${table}`).all()).toEqual([]);
        }
        await cache([custom]);
        expect(queueCollection({ previewId: preview.id, keys }).ok).toBe(true);
    });
});