<?php

use App\Services\Traffic\OnlineVisitorRepository;
use App\Services\Traffic\PresenceIndexPruner;
use Illuminate\Support\Facades\Redis;

it('removes stale presence members and keeps live ones', function () {
    Redis::shouldReceive('sscan')->once()->andReturn([0, ['stale-1', 'live-1']]);
    Redis::shouldReceive('pipeline')->once()->andReturnUsing(function ($cb) {
        $pipe = Mockery::mock();
        $pipe->shouldReceive('exists')->twice();
        $cb($pipe);

        return [0, 1];
    });
    Redis::shouldReceive('eval')->once()->andReturn(1);

    $result = app(PresenceIndexPruner::class)->prune(200, 1, 10, 0, false);

    expect($result['scanned'])->toBe(2)
        ->and($result['stale'])->toBe(1)
        ->and($result['live'])->toBe(1)
        ->and($result['removed'])->toBe(1);
});

it('dry-run counts stale members without srem/eval', function () {
    Redis::shouldReceive('sscan')->once()->andReturn([0, ['stale-1']]);
    Redis::shouldReceive('pipeline')->once()->andReturnUsing(function ($cb) {
        $pipe = Mockery::mock();
        $pipe->shouldReceive('exists')->once();
        $cb($pipe);

        return [0];
    });
    Redis::shouldReceive('eval')->never();

    $result = app(PresenceIndexPruner::class)->prune(200, 5, 100, 0, true);

    expect($result['stale'])->toBe(1)
        ->and($result['removed'])->toBe(0)
        ->and($result['dry_run'])->toBeTrue();
});

it('respects max-batches and max-members', function () {
    Redis::shouldReceive('sscan')->once()->andReturn([1, ['a', 'b']]);
    Redis::shouldReceive('pipeline')->once()->andReturnUsing(function ($cb) {
        $pipe = Mockery::mock();
        $pipe->shouldReceive('exists')->twice();
        $cb($pipe);

        return [0, 0];
    });
    Redis::shouldReceive('eval')->never();

    $result = app(PresenceIndexPruner::class)->prune(200, 1, 2, 0, true);

    expect($result['batches'])->toBe(1)
        ->and($result['scanned'])->toBe(2);
});

it('does not use smembers on the presence index', function () {
    $source = file_get_contents(base_path('app/Services/Traffic/PresenceIndexPruner.php'));
    expect(strtolower((string) $source))->not->toContain('smembers')
        ->and(strtolower((string) $source))->toContain('sscan');
});

it('never deletes the presence index key', function () {
    $source = (string) file_get_contents(base_path('app/Services/Traffic/PresenceIndexPruner.php'));
    expect($source)->toContain('SREM')
        ->and($source)->not->toContain('unlink')
        ->and($source)->not->toContain('->del(')
        ->and($source)->not->toContain('FLUSH');
});