<?php

declare(strict_types=1);

namespace Monitor\Api\Tests\Controller;

use Monitor\Api\Controller\HostConfigController;
use Monitor\Api\Db\Database;
use Monitor\Api\Http\Request;
use Monitor\Api\Repository\AgentRepository;
use Monitor\Api\Repository\HostConfigRepository;
use Monitor\Api\Repository\SystemRepository;
use PHPUnit\Framework\TestCase;

final class HostConfigControllerTest extends TestCase
{
    private HostConfigController $controller;
    private HostConfigRepository $hosts;
    private SystemRepository $systems;
    /** @var array<string, mixed> */
    private array $opsAgent;

    protected function setUp(): void
    {
        $db = Database::inMemory();
        $agents = new AgentRepository($db);
        $this->opsAgent = $agents->register('OPs', 'ops')['agent'];
        $this->hosts = new HostConfigRepository($db);
        $this->systems = new SystemRepository($db);
        $this->controller = new HostConfigController($this->hosts, $this->systems);
    }

    public function testIndexReturnsDerivedSystemIds(): void
    {
        $this->hosts->create([
            'agent_id' => $this->opsAgent['id'],
            'hostname' => 'Nextcloud(lokal)',
            'address' => '192.168.2.7',
        ]);

        $body = $this->controller->index(Request::create('GET', '/api/v1/hosts'))->body();

        self::assertSame(
            ['Nextcloud(lokal)', 'nextcloud-lokal'],
            $body['hosts'][0]['system_ids']
        );
        self::assertSame('OPs', $body['hosts'][0]['agent_name']);
    }

    public function testDeleteAlsoRemovesTilesOfBothReportingPaths(): void
    {
        $host = $this->hosts->create([
            'agent_id' => $this->opsAgent['id'],
            'hostname' => 'Nextcloud(lokal)',
            'address' => '192.168.2.7',
        ]);
        // So wuerde derselbe Host in den Monitor kommen: per REST unter dem Slug,
        // per status.txt-Import unter dem Namen.
        $this->systems->reportStatus('nextcloud-lokal', ['status' => 'error']);
        $this->systems->importLegacyRows([[
            'id' => 'Nextcloud(lokal)', 'name' => 'Nextcloud(lokal)', 'status' => 'error',
            'detail' => '192.168.2.7', 'last_check_at' => '2026-01-01 00:00',
        ]]);

        $this->controller->delete(Request::create('DELETE', '/api/v1/hosts/1'), ['id' => (string) $host['id']]);

        self::assertNull($this->systems->find('nextcloud-lokal'));
        self::assertNull($this->systems->find('Nextcloud(lokal)'));
    }

    public function testUpdateRemovesTileOfPreviousHostname(): void
    {
        $host = $this->hosts->create([
            'agent_id' => $this->opsAgent['id'],
            'hostname' => 'alt',
            'address' => '10.0.0.1',
        ]);
        $this->systems->reportStatus('alt', ['status' => 'ok']);

        $this->controller->update(
            Request::create('PATCH', '/api/v1/hosts/1', [], ['hostname' => 'neu', 'address' => '10.0.0.1']),
            ['id' => (string) $host['id']]
        );

        self::assertNull($this->systems->find('alt'));
    }

    public function testConfReturnsPlainHostsFileForAuthenticatedAgent(): void
    {
        $this->hosts->create(['agent_id' => $this->opsAgent['id'], 'hostname' => 'Web', 'address' => '10.0.0.1']);

        $response = $this->controller->conf(Request::create('GET', '/api/v1/hosts/conf'), [], $this->opsAgent);

        self::assertSame(200, $response->status);
        self::assertStringContainsString("Web 10.0.0.1\n", (string) $response->body());
    }

    public function testConfAnswers204BeforeTheFirstImport(): void
    {
        $response = $this->controller->conf(Request::create('GET', '/api/v1/hosts/conf'), [], $this->opsAgent);

        self::assertSame(204, $response->status);
    }

    public function testConfAnswers200WithAnEmptyListAfterTheImport(): void
    {
        // Alle Hosts im Frontend entfernt: der Ping-Rechner soll seine Datei leeren, nicht
        // die alte Liste behalten - also 200 mit leerer Liste statt 204.
        $this->controller->import(
            Request::create('POST', '/api/v1/hosts/import', [], [], [], "Web 10.0.0.1\n"),
            [],
            $this->opsAgent
        );
        foreach ($this->hosts->allForAgent((int) $this->opsAgent['id']) as $host) {
            $this->hosts->delete((int) $host['id']);
        }

        $response = $this->controller->conf(Request::create('GET', '/api/v1/hosts/conf'), [], $this->opsAgent);

        self::assertSame(200, $response->status);
        self::assertStringNotContainsString('Web', (string) $response->body());
    }

    public function testConfRejectsAgentWithoutOpsRole(): void
    {
        $response = $this->controller->conf(
            Request::create('GET', '/api/v1/hosts/conf'),
            [],
            ['id' => 99, 'role' => 'entwickler']
        );

        self::assertSame(403, $response->status);
    }

    public function testImportFillsListFromUploadedHostsConf(): void
    {
        $conf = "# Kommentar\nWeb 10.0.0.1\nMail 10.0.0.2\n";

        $response = $this->controller->import(
            Request::create('POST', '/api/v1/hosts/import', [], [], [], $conf),
            [],
            $this->opsAgent
        );

        self::assertSame(2, $response->body()['imported']);
        self::assertCount(2, $this->hosts->allForAgent((int) $this->opsAgent['id']));
    }

    public function testImportDoesNotOverwriteExistingList(): void
    {
        $this->hosts->create(['agent_id' => $this->opsAgent['id'], 'hostname' => 'Web', 'address' => '10.0.0.1']);

        $response = $this->controller->import(
            Request::create('POST', '/api/v1/hosts/import', [], [], [], "Anders 10.0.0.9\n"),
            [],
            $this->opsAgent
        );

        self::assertSame(0, $response->body()['imported']);
        self::assertCount(1, $this->hosts->allForAgent((int) $this->opsAgent['id']));
    }
}