<?php

declare(strict_types=1);

use App\Application\LiveComponents\Dashboard\WorkerHealthState;

describe('WorkerHealthState', function () {
    it('creates empty state with default values', function () {
        $state = WorkerHealthState::empty();

        expect($state->activeWorkers)->toBe(0);
        expect($state->totalWorkers)->toBe(0);
        expect($state->jobsInProgress)->toBe(0);
        expect($state->workerDetails)->toBe([]);
        expect($state->lastUpdated)->toBeString();
    });

    it('creates state from array', function () {
        $data = [
            'activeWorkers' => 3,
            'totalWorkers' => 5,
            'jobsInProgress' => 7,
            'workerDetails' => [
                [
                    'id' => 'worker-1',
                    'hostname' => 'server-01',
                    'healthy' => true,
                ],
            ],
            'lastUpdated' => '2024-01-15 12:00:00',
        ];

        $state = WorkerHealthState::fromArray($data);

        expect($state->activeWorkers)->toBe(3);
        expect($state->totalWorkers)->toBe(5);
        expect($state->jobsInProgress)->toBe(7);
        expect($state->workerDetails)->toHaveCount(1);
        expect($state->workerDetails[0]['id'])->toBe('worker-1');
    });

    it('converts state to array', function () {
        $workerDetails = [
            [
                'id' => 'worker-1',
                'hostname' => 'server-01',
                'process_id' => 12345,
                'healthy' => true,
                'jobs' => 2,
                'max_jobs' => 10,
            ],
        ];

        $state = new WorkerHealthState(
            activeWorkers: 1,
            totalWorkers: 3,
            jobsInProgress: 2,
            workerDetails: $workerDetails,
            lastUpdated: '2024-01-15 12:00:00'
        );

        $array = $state->toArray();

        expect($array)->toHaveKey('activeWorkers');
        expect($array)->toHaveKey('totalWorkers');
        expect($array)->toHaveKey('jobsInProgress');
        expect($array)->toHaveKey('workerDetails');
        expect($array['workerDetails'])->toHaveCount(1);
    });

    it('creates new state with updated worker health', function () {
        $state = WorkerHealthState::empty();

        $workerDetails = [
            [
                'id' => 'worker-1',
                'hostname' => 'server-01',
                'healthy' => true,
                'jobs' => 5,
            ],
            [
                'id' => 'worker-2',
                'hostname' => 'server-02',
                'healthy' => false,
                'jobs' => 0,
            ],
        ];

        $updatedState = $state->withWorkerHealth(
            activeWorkers: 2,
            totalWorkers: 2,
            jobsInProgress: 5,
            workerDetails: $workerDetails
        );

        // Original unchanged
        expect($state->activeWorkers)->toBe(0);
        expect($state->workerDetails)->toBe([]);

        // New state updated
        expect($updatedState->activeWorkers)->toBe(2);
        expect($updatedState->totalWorkers)->toBe(2);
        expect($updatedState->jobsInProgress)->toBe(5);
        expect($updatedState->workerDetails)->toHaveCount(2);
        expect($updatedState->lastUpdated)->not->toBe($state->lastUpdated);
    });

    it('is immutable', function () {
        $state = new WorkerHealthState(
            activeWorkers: 5,
            totalWorkers: 10,
            jobsInProgress: 15,
            workerDetails: [],
            lastUpdated: '2024-01-15 12:00:00'
        );

        $newState = $state->withWorkerHealth(
            activeWorkers: 6,
            totalWorkers: 10,
            jobsInProgress: 20,
            workerDetails: []
        );

        // Original unchanged
        expect($state->activeWorkers)->toBe(5);
        expect($state->jobsInProgress)->toBe(15);

        // New instance
        expect($newState)->not->toBe($state);
        expect($newState->activeWorkers)->toBe(6);
        expect($newState->jobsInProgress)->toBe(20);
    });

    it('handles empty worker details array', function () {
        $state = WorkerHealthState::empty()->withWorkerHealth(
            activeWorkers: 0,
            totalWorkers: 0,
            jobsInProgress: 0,
            workerDetails: []
        );

        expect($state->workerDetails)->toBe([]);
        expect($state->activeWorkers)->toBe(0);
    });
});