initial commit

app/Http/Controllers/GoogleImageGenerationController.php

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+<?php
+
+namespace App\Http\Controllers;
+
+use App\Services\Google\DTO\ImageGenerationRequest;
+use App\Services\Google\DTO\ImageGenerationResponse;
+use App\Services\Google\Error\APIError;
+use App\Services\Google\ImageAspectRatios;
+use App\Services\Google\ImageGenerationService;
+use App\Services\Image\ImageService;
+use Exception;
+use Google\Exception as GoogleException;
+use Illuminate\Http\JsonResponse;
+use Illuminate\Http\Request;
+use Illuminate\Validation\Rule;
+
+class GoogleImageGenerationController
+{
+    public function __construct(
+        private readonly ImageService $imageService,
+        private readonly ImageGenerationService $imageGenerationService,
+    ) {
+    }
+
+    public function generateImage(Request $request): JsonResponse|string
+    {
+        try {
+            $imageGenerationRequest = $this->buildImageGenerationRequest($request);
+            $imageGenerationResponse = $this->imageGenerationService->generateImage($imageGenerationRequest);
+
+            return new JsonResponse(
+                ['generations' => $this->handleGenerationResponse($imageGenerationResponse)]
+            );
+        } catch (GoogleException|Exception|APIError $e) {
+            return new JsonResponse([
+                'error' => $e->getMessage(),
+            ]);
+        }
+    }
+
+    private function buildImageGenerationRequest(Request $request): ImageGenerationRequest
+    {
+        // add nulls for optional fields
+        $request->merge([
+            'aspect_ratio' => $request->input('aspect_ratio'),
+            'negative_prompt' => $request->input('negative_prompt'),
+            'sample_count' => $request->input('sample_count'),
+        ]);
+
+        $values = $request->validate([
+            'prompt' => 'required|string',
+            'aspect_ratio' => [Rule::enum(ImageAspectRatios::class), 'nullable'],
+            'negative_prompt' => 'string|nullable',
+            'sample_count' => 'integer|nullable',
+        ]);
+
+
+        return new ImageGenerationRequest(
+            $values['prompt'],
+            $values['negative_prompt'],
+            $values['sample_count'],
+            $values['aspect_ratio'],
+        );
+    }
+
+    /**
+     * @throws Exception
+     */
+    private function handleGenerationResponse(ImageGenerationResponse $generationResponseData): array
+    {
+        if (isset($generationResponseData->error)) {
+            throw $generationResponseData->error;
+        }
+
+        $generations = [];
+
+        foreach ($generationResponseData->predictions as $prediction) {
+            $savedImage = $this->imageService->saveImage($prediction->bytesBase64Encoded, $prediction->mimeType);
+            $generations[] = $savedImage;
+        }
+        return $generations;
+    }
+}

app/Http/Kernel.php

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+<?php
+
+namespace App\Http;
+
+use Illuminate\Foundation\Http\Kernel as HttpKernel;
+
+class Kernel extends HttpKernel
+{
+    /**
+     * The application's global HTTP middleware stack.
+     *
+     * These middleware are run during every request to your application.
+     *
+     * @var array<int, class-string|string>
+     */
+    protected $middleware = [
+        // \App\Http\Middleware\TrustHosts::class,
+        \App\Http\Middleware\TrustProxies::class,
+        \Illuminate\Http\Middleware\HandleCors::class,
+        \App\Http\Middleware\PreventRequestsDuringMaintenance::class,
+        \Illuminate\Foundation\Http\Middleware\ValidatePostSize::class,
+        \App\Http\Middleware\TrimStrings::class,
+        \Illuminate\Foundation\Http\Middleware\ConvertEmptyStringsToNull::class,
+    ];
+
+    /**
+     * The application's route middleware groups.
+     *
+     * @var array<string, array<int, class-string|string>>
+     */
+    protected $middlewareGroups = [
+        'web' => [
+            \App\Http\Middleware\EncryptCookies::class,
+            \Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse::class,
+            \Illuminate\Session\Middleware\StartSession::class,
+            \Illuminate\View\Middleware\ShareErrorsFromSession::class,
+            \App\Http\Middleware\VerifyCsrfToken::class,
+            \Illuminate\Routing\Middleware\SubstituteBindings::class,
+        ],
+
+        'api' => [
+            // \Laravel\Sanctum\Http\Middleware\EnsureFrontendRequestsAreStateful::class,
+            \Illuminate\Routing\Middleware\ThrottleRequests::class.':api',
+            \Illuminate\Routing\Middleware\SubstituteBindings::class,
+        ],
+    ];
+
+    /**
+     * The application's middleware aliases.
+     *
+     * Aliases may be used instead of class names to conveniently assign middleware to routes and groups.
+     *
+     * @var array<string, class-string|string>
+     */
+    protected $middlewareAliases = [
+        'auth' => \App\Http\Middleware\Authenticate::class,
+        'auth.basic' => \Illuminate\Auth\Middleware\AuthenticateWithBasicAuth::class,
+        'auth.session' => \Illuminate\Session\Middleware\AuthenticateSession::class,
+        'cache.headers' => \Illuminate\Http\Middleware\SetCacheHeaders::class,
+        'can' => \Illuminate\Auth\Middleware\Authorize::class,
+        'guest' => \App\Http\Middleware\RedirectIfAuthenticated::class,
+        'password.confirm' => \Illuminate\Auth\Middleware\RequirePassword::class,
+        'precognitive' => \Illuminate\Foundation\Http\Middleware\HandlePrecognitiveRequests::class,
+        'signed' => \App\Http\Middleware\ValidateSignature::class,
+        'throttle' => \Illuminate\Routing\Middleware\ThrottleRequests::class,
+        'verified' => \Illuminate\Auth\Middleware\EnsureEmailIsVerified::class,
+    ];
+}

app/Http/Middleware/Authenticate.php

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+<?php
+
+namespace App\Http\Middleware;
+
+use Illuminate\Auth\Middleware\Authenticate as Middleware;
+use Illuminate\Http\Request;
+
+class Authenticate extends Middleware
+{
+    /**
+     * Get the path the user should be redirected to when they are not authenticated.
+     */
+    protected function redirectTo(Request $request): ?string
+    {
+        return $request->expectsJson() ? null : route('login');
+    }
+}

app/Http/Middleware/EncryptCookies.php

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+<?php
+
+namespace App\Http\Middleware;
+
+use Illuminate\Cookie\Middleware\EncryptCookies as Middleware;
+
+class EncryptCookies extends Middleware
+{
+    /**
+     * The names of the cookies that should not be encrypted.
+     *
+     * @var array<int, string>
+     */
+    protected $except = [
+        //
+    ];
+}

app/Http/Middleware/PreventRequestsDuringMaintenance.php

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+<?php
+
+namespace App\Http\Middleware;
+
+use Illuminate\Foundation\Http\Middleware\PreventRequestsDuringMaintenance as Middleware;
+
+class PreventRequestsDuringMaintenance extends Middleware
+{
+    /**
+     * The URIs that should be reachable while maintenance mode is enabled.
+     *
+     * @var array<int, string>
+     */
+    protected $except = [
+        //
+    ];
+}

app/Http/Middleware/RedirectIfAuthenticated.php

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+<?php
+
+namespace App\Http\Middleware;
+
+use App\Providers\RouteServiceProvider;
+use Closure;
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\Auth;
+use Symfony\Component\HttpFoundation\Response;
+
+class RedirectIfAuthenticated
+{
+    /**
+     * Handle an incoming request.
+     *
+     * @param  \Closure(\Illuminate\Http\Request): (\Symfony\Component\HttpFoundation\Response)  $next
+     */
+    public function handle(Request $request, Closure $next, string ...$guards): Response
+    {
+        $guards = empty($guards) ? [null] : $guards;
+
+        foreach ($guards as $guard) {
+            if (Auth::guard($guard)->check()) {
+                return redirect(RouteServiceProvider::HOME);
+            }
+        }
+
+        return $next($request);
+    }
+}

app/Http/Middleware/TrimStrings.php

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+<?php
+
+namespace App\Http\Middleware;
+
+use Illuminate\Foundation\Http\Middleware\TrimStrings as Middleware;
+
+class TrimStrings extends Middleware
+{
+    /**
+     * The names of the attributes that should not be trimmed.
+     *
+     * @var array<int, string>
+     */
+    protected $except = [
+        'current_password',
+        'password',
+        'password_confirmation',
+    ];
+}

app/Http/Middleware/TrustHosts.php

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+<?php
+
+namespace App\Http\Middleware;
+
+use Illuminate\Http\Middleware\TrustHosts as Middleware;
+
+class TrustHosts extends Middleware
+{
+    /**
+     * Get the host patterns that should be trusted.
+     *
+     * @return array<int, string|null>
+     */
+    public function hosts(): array
+    {
+        return [
+            $this->allSubdomainsOfApplicationUrl(),
+        ];
+    }
+}

app/Http/Middleware/TrustProxies.php

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+<?php
+
+namespace App\Http\Middleware;
+
+use Illuminate\Http\Middleware\TrustProxies as Middleware;
+use Illuminate\Http\Request;
+
+class TrustProxies extends Middleware
+{
+    /**
+     * The trusted proxies for this application.
+     *
+     * @var array<int, string>|string|null
+     */
+    protected $proxies;
+
+    /**
+     * The headers that should be used to detect proxies.
+     *
+     * @var int
+     */
+    protected $headers =
+        Request::HEADER_X_FORWARDED_FOR |
+        Request::HEADER_X_FORWARDED_HOST |
+        Request::HEADER_X_FORWARDED_PORT |
+        Request::HEADER_X_FORWARDED_PROTO |
+        Request::HEADER_X_FORWARDED_AWS_ELB;
+}

app/Http/Middleware/ValidateSignature.php

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+<?php
+
+namespace App\Http\Middleware;
+
+use Illuminate\Routing\Middleware\ValidateSignature as Middleware;
+
+class ValidateSignature extends Middleware
+{
+    /**
+     * The names of the query string parameters that should be ignored.
+     *
+     * @var array<int, string>
+     */
+    protected $except = [
+        // 'fbclid',
+        // 'utm_campaign',
+        // 'utm_content',
+        // 'utm_medium',
+        // 'utm_source',
+        // 'utm_term',
+    ];
+}

app/Http/Middleware/VerifyCsrfToken.php

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+<?php
+
+namespace App\Http\Middleware;
+
+use Illuminate\Foundation\Http\Middleware\VerifyCsrfToken as Middleware;
+
+class VerifyCsrfToken extends Middleware
+{
+    /**
+     * The URIs that should be excluded from CSRF verification.
+     *
+     * @var array<int, string>
+     */
+    protected $except = [
+        //
+    ];
+}