<?php

declare(strict_types=1);

namespace Monitor\Api\Tests\Repository;

use InvalidArgumentException;
use Monitor\Api\Db\Database;
use Monitor\Api\Http\NotFoundException;
use Monitor\Api\Repository\AgentRepository;
use PHPUnit\Framework\TestCase;

final class AgentRepositoryTest extends TestCase
{
    private AgentRepository $repository;

    protected function setUp(): void
    {
        $this->repository = new AgentRepository(Database::inMemory(), deskCount: 2);
    }

    public function testRegisterAssignsLowestFreeDesk(): void
    {
        $first = $this->repository->register('Alice', 'entwickler');
        $second = $this->repository->register('Bob', 'qa');

        self::assertSame(0, $first['agent']['desk_index']);
        self::assertSame(1, $second['agent']['desk_index']);
        self::assertNotSame($first['api_key'], $second['api_key']);
        self::assertArrayNotHasKey('api_key_hash', $first['agent']);
    }

    public function testUserRoleNeverGetsADesk(): void
    {
        $result = $this->repository->register('Carol', 'user');

        self::assertNull($result['agent']['desk_index']);
    }

    public function testOverflowAgentGetsNoDeskWhenAllOccupied(): void
    {
        $this->repository->register('Alice', 'entwickler');
        $this->repository->register('Bob', 'qa');
        $third = $this->repository->register('Dan', 'product_owner');

        self::assertNull($third['agent']['desk_index']);
    }

    public function testRegisterRejectsUnknownRole(): void
    {
        $this->expectException(InvalidArgumentException::class);

        $this->repository->register('Eve', 'ceo');
    }

    public function testFindByApiKeyReturnsMatchingAgent(): void
    {
        $result = $this->repository->register('Alice', 'entwickler');

        $found = $this->repository->findByApiKey($result['api_key']);

        self::assertNotNull($found);
        self::assertSame($result['agent']['id'], $found['id']);
    }

    public function testFindByApiKeyReturnsNullForUnknownKey(): void
    {
        self::assertNull($this->repository->findByApiKey('does-not-exist'));
    }

    public function testUpdateActivityChangesStateAndTicket(): void
    {
        $result = $this->repository->register('Alice', 'entwickler');
        $id = (int) $result['agent']['id'];

        $updated = $this->repository->updateActivity($id, 'working', 42);

        self::assertSame('working', $updated['state']);
        self::assertSame(42, $updated['current_ticket_id']);
    }

    public function testUpdateActivityThrowsForUnknownAgent(): void
    {
        $this->expectException(NotFoundException::class);

        $this->repository->updateActivity(999, 'working', null);
    }

    public function testAllListsAgentsWithoutApiKeyHash(): void
    {
        $this->repository->register('Alice', 'entwickler');
        $this->repository->register('Bob', 'qa');

        $all = $this->repository->all();

        self::assertCount(2, $all);
        foreach ($all as $agent) {
            self::assertArrayNotHasKey('api_key_hash', $agent);
        }
    }
}