import { describe, expect, it, vi } from 'vitest';
import { render } from 'svelte/server';
import type { FleetServer } from '../../src/lib/fleet-overview.js';
import { fleetActionAvailable, queueFleetAction } from '../../src/lib/ui/fleet-actions.js';
import FleetActionsDialog from '../../src/lib/ui/components/FleetActionsDialog.svelte';

const now = Date.parse('2026-10-07T12:00:00Z');
const at = new Date(now - 1000).toISOString();
const server: FleetServer = {
    name: 't5_zombie_theater_1',
    game: 't5',
    map: 'zombie_theater',
    last_map: 'zombie_theater',
    last_gametype: 'zclassic',
    last_players: 4,
    last_seen_at: new Date(now - 10_000).toISOString(),
    last_error: null,
    container_state: 'running',
    container_checked_at: at,
    last_checked_at: at,
    roster: [],
    health: 'online',
    held: [],
    active_since: null,
    inactive_since: null,
    game_started_at: null,
    game_ended_at: null,
    host_id: 'host-1',
    host: {
        id: 'host-1',
        name: 'Dallas 1',
        connected: true,
        connectionState: 'online',
        lastHeartbeat: at
    }
};

describe('fleet actions', () => {
    it('uses the single-server eligibility rules and permits queued destruction with unknown status', () => {
        expect(fleetActionAvailable(server, 'restart', now)).toBe(true);
        expect(fleetActionAvailable(server, 'start', now)).toBe(false);
        const stopped = { ...server, health: 'offline' as const, container_state: 'stopped' };
        expect(fleetActionAvailable(stopped, 'start', now)).toBe(true);
        expect(fleetActionAvailable(stopped, 'restart', now)).toBe(false);
        expect(fleetActionAvailable(server, 'stop', now + 300_000)).toBe(false);
        expect(fleetActionAvailable({ ...server, host: null }, 'rebuild', now)).toBe(false);
        expect(fleetActionAvailable({ ...server, host: null }, 'destroy', now)).toBe(true);
    });

    it.each(['restart', 'start', 'stop', 'rebuild'] as const)(
        'queues %s only for selected servers and deduplicates selections',
        async (action) => {
            const request = vi
                .fn()
                .mockImplementation(async () =>
                    Response.json({ deploymentId: 'job-1' }, { status: 202 })
                );
            const result = await queueFleetAction(
                action,
                [server.name, 'second', server.name],
                request
            );
            expect(
                request.mock.calls.map(([url, options]) => [
                    url,
                    options.method,
                    JSON.parse(options.body)
                ])
            ).toEqual([
                ['/api/provisioning', 'POST', { server: server.name, action }],
                ['/api/provisioning', 'POST', { server: 'second', action }]
            ]);
            expect(result.queued.map((item) => item.server)).toEqual([server.name, 'second']);
            expect(result.failed).toEqual([]);
        }
    );

    it('destroys only the chosen servers through the existing per-server endpoint', async () => {
        const request = vi
            .fn()
            .mockResolvedValue(Response.json({ deploymentId: 'destroy-1' }, { status: 202 }));
        await queueFleetAction('destroy', ['server/a'], request);
        expect(request).toHaveBeenCalledTimes(1);
        expect(request).toHaveBeenCalledWith('/api/servers/server%2Fa', { method: 'DELETE' });
    });

    it('reports partial failures and continues without retrying successful requests', async () => {
        const request = vi
            .fn()
            .mockResolvedValueOnce(
                Response.json({ error: 'Another job is pending.' }, { status: 409 })
            )
            .mockResolvedValueOnce(Response.json({ deploymentId: 'job-2' }, { status: 202 }))
            .mockRejectedValueOnce(new Error('offline'));
        const result = await queueFleetAction(
            'restart',
            ['blocked', 'ready', 'uncertain'],
            request
        );
        expect(result.queued).toEqual([{ server: 'ready', deploymentId: 'job-2' }]);
        expect(result.failed).toEqual([
            { server: 'blocked', error: 'Another job is pending.' },
            {
                server: 'uncertain',
                error: expect.stringContaining('Check Provisioning before trying again')
            }
        ]);
        expect(request).toHaveBeenCalledTimes(3);
    });

    it('does not report missing job IDs as successfully queued or submit an empty selection', async () => {
        const request = vi.fn().mockResolvedValue(Response.json({}, { status: 202 }));
        expect((await queueFleetAction('stop', ['one'], request)).queued).toEqual([]);
        request.mockClear();
        expect(await queueFleetAction('stop', [], request)).toEqual({ queued: [], failed: [] });
        expect(request).not.toHaveBeenCalled();
    });

    it('renders a named dialog with all five actions and a disabled empty selection', () => {
        const body = render(FleetActionsDialog, { props: { open: true, onqueued: vi.fn() } }).body;
        for (const action of ['Restart', 'Start', 'Stop', 'Rebuild', 'Destroy'])
            expect(body).toContain(`>${action}</option>`);
        expect(body).toContain('Fleet actions');
        expect(body).toContain('Select all eligible');
        expect(body).toContain('0 selected');
        const submit = [...body.matchAll(/<button\b[^>]*>[\s\S]*?<\/button>/g)].find((match) =>
            match[0].replace(/\s+/g, ' ').includes('Restart 0 servers')
        )?.[0];
        expect(submit).toContain('disabled');
    });
});