Build Laravel 13 ticket assistant with Docker, Livewire admin, and helpdesk scraper command

app/Services/EmbeddingService.php

@@ -0,0 +1,47 @@
+<?php
+
+namespace App\Services;
+
+use App\Exceptions\OllamaUnavailableException;
+use App\Models\EmbeddingCache;
+use Illuminate\Support\Facades\Http;
+use Throwable;
+
+class EmbeddingService
+{
+    public function embed(string $text): array
+    {
+        $hash = hash('sha256', $text);
+        $cached = EmbeddingCache::query()->where('text_hash', $hash)->first();
+
+        if ($cached !== null) {
+            return $cached->embedding;
+        }
+
+        $baseUrl = rtrim((string) config('services.ollama.base_url'), '/');
+
+        try {
+            $response = Http::timeout((int) config('services.ollama.timeout', 30))
+                ->post($baseUrl.'/api/embeddings', [
+                    'model' => config('services.ollama.embed_model', 'nomic-embed-text'),
+                    'prompt' => $text,
+                ])
+                ->throw()
+                ->json();
+        } catch (Throwable $e) {
+            throw new OllamaUnavailableException('Ollama embedding endpoint is unavailable', 0, $e);
+        }
+
+        $embedding = $response['embedding'] ?? [];
+        if (!is_array($embedding) || $embedding === []) {
+            throw new OllamaUnavailableException('Ollama embedding response did not include a valid embedding');
+        }
+
+        EmbeddingCache::query()->updateOrCreate(
+            ['text_hash' => $hash],
+            ['text' => $text, 'embedding' => $embedding]
+        );
+
+        return $embedding;
+    }
+}