<?php

namespace App\Http\Controllers;

use App\Http\Requests\StoreEnvironmentDeploymentRequest;
use App\Jobs\Environments\DeployEnvironment;
use App\Models\Application;
use App\Models\Environment;
use App\Models\Organisation;
use Illuminate\Http\RedirectResponse;
use Illuminate\Support\Collection;

class EnvironmentDeploymentController extends Controller
{
    public function store(StoreEnvironmentDeploymentRequest $request, Organisation $organisation, Application $application, Environment $environment): RedirectResponse
    {
        abort_unless(
            (int) $application->organisation_id === (int) $organisation->id
            && (int) $environment->application_id === (int) $application->id,
            404,
        );

        $environment->loadMissing('services.replicas');

        if ($organisation->registries()->doesntExist() && $this->serverIdsFor($environment)->count() > 1) {
            return back()->with('error', 'Configure a registry before deploying this environment to multiple servers.');
        }

        dispatch(new DeployEnvironment(
            environment: $environment,
            targetCommit: $request->validated('target_commit') ?: null,
        ));

        return redirect()->route('environments.show', [
            'organisation' => $organisation->id,
            'application' => $application->id,
            'environment' => $environment->id,
        ]);
    }

    /**
     * @return \Illuminate\Support\Collection<int, int>
     */
    private function serverIdsFor(Environment $environment): Collection
    {
        return $environment->services
            ->flatMap(fn ($service) => [
                $service->server_id,
                ...$service->replicas->pluck('server_id')->all(),
            ])
            ->filter()
            ->unique()
            ->values();
    }
}