4 - Drop status promotion in UrlDiscoveredListener; defer to keywords listener

app/Enums/PageStatusEnum.php

@@ -0,0 +1,12 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Enums;
+
+enum PageStatusEnum: string
+{
+    case Discovered = 'discovered';
+    case Fetched = 'fetched';
+    case Failed = 'failed';
+}

app/Listeners/UrlDiscoveredListener.php

@@ -0,0 +1,39 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Listeners;
+
+use App\Enums\PageStatusEnum;
+use App\Models\Page;
+use App\Models\PageLink;
+use Illuminate\Contracts\Queue\ShouldQueue;
+use Illuminate\Support\Facades\DB;
+use Lvl0\FediDiscover\Events\UrlDiscovered;
+
+class UrlDiscoveredListener implements ShouldQueue
+{
+    public function handle(UrlDiscovered $event): void
+    {
+        DB::transaction(function () use ($event) {
+            $targetPage = Page::firstOrCreate(
+                ['url' => $event->url],
+                ['status' => PageStatusEnum::Discovered, 'instance_id' => $event->instanceId],
+            );
+
+            if ($event->postUrl === null || $event->postUrl === $event->url) {
+                return;
+            }
+
+            $sourcePage = Page::firstOrCreate(
+                ['url' => $event->postUrl],
+                ['status' => PageStatusEnum::Discovered, 'instance_id' => $event->instanceId],
+            );
+
+            PageLink::firstOrCreate([
+                'source_page_id' => $sourcePage->id,
+                'target_page_id' => $targetPage->id,
+            ]);
+        });
+    }
+}

app/Models/Page.php

@@ -0,0 +1,51 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Models;
+
+use App\Enums\PageStatusEnum;
+use Database\Factories\PageFactory;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+use Lvl0\FediDiscover\Models\Instance;
+
+class Page extends Model
+{
+    /** @use HasFactory<PageFactory> */
+    use HasFactory;
+
+    protected $fillable = [
+        'url',
+        'status',
+        'title',
+        'instance_id',
+        'posted_at',
+        'fetched_at',
+        'failed_at',
+    ];
+
+    protected $casts = [
+        'status' => PageStatusEnum::class,
+        'posted_at' => 'datetime',
+        'fetched_at' => 'datetime',
+        'failed_at' => 'datetime',
+    ];
+
+    public function instance(): BelongsTo
+    {
+        return $this->belongsTo(Instance::class);
+    }
+
+    public function outgoingLinks(): HasMany
+    {
+        return $this->hasMany(PageLink::class, 'source_page_id');
+    }
+
+    public function incomingLinks(): HasMany
+    {
+        return $this->hasMany(PageLink::class, 'target_page_id');
+    }
+}

app/Models/PageLink.php

@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Models;
+
+use Database\Factories\PageLinkFactory;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class PageLink extends Model
+{
+    /** @use HasFactory<PageLinkFactory> */
+    use HasFactory;
+
+    protected $fillable = [
+        'source_page_id',
+        'target_page_id',
+    ];
+
+    public function sourcePage(): BelongsTo
+    {
+        return $this->belongsTo(Page::class, 'source_page_id');
+    }
+
+    public function targetPage(): BelongsTo
+    {
+        return $this->belongsTo(Page::class, 'target_page_id');
+    }
+}

app/Providers/AppServiceProvider.php

@@ -2,7 +2,10 @@
 
 namespace App\Providers;
 
+use App\Listeners\UrlDiscoveredListener;
+use Illuminate\Support\Facades\Event;
 use Illuminate\Support\ServiceProvider;
+use Lvl0\FediDiscover\Events\UrlDiscovered;
 
 class AppServiceProvider extends ServiceProvider
 {
@@ -19,6 +22,6 @@ public function register(): void
      */
     public function boot(): void
     {
-        //
+        Event::listen(UrlDiscovered::class, UrlDiscoveredListener::class);
     }
 }

database/factories/PageFactory.php

@@ -1,7 +1,10 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Database\Factories;
 
+use App\Enums\PageStatusEnum;
 use App\Models\Page;
 use Illuminate\Database\Eloquent\Factories\Factory;
 
@@ -11,14 +14,13 @@
 class PageFactory extends Factory
 {
     /**
-     * Define the model's default state.
-     *
      * @return array<string, mixed>
      */
     public function definition(): array
     {
         return [
-            //
+            'url' => fake()->url(),
+            'status' => PageStatusEnum::Discovered,
         ];
     }
 }

database/factories/PageLinkFactory.php

@@ -0,0 +1,34 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Database\Factories;
+
+use App\Models\Page;
+use App\Models\PageLink;
+use Illuminate\Database\Eloquent\Factories\Factory;
+
+/**
+ * @extends Factory<PageLink>
+ */
+class PageLinkFactory extends Factory
+{
+    public function definition(): array
+    {
+        return [];
+    }
+
+    public function withSource(Page $page): static
+    {
+        return $this->state(fn () => [
+            'source_page_id' => $page->id,
+        ]);
+    }
+
+    public function withTarget(Page $page): static
+    {
+        return $this->state(fn () => [
+            'target_page_id' => $page->id,
+        ]);
+    }
+}

database/migrations/2026_04_25_234157_create_pages_table.php

@@ -0,0 +1,34 @@
+<?php
+
+declare(strict_types=1);
+
+use App\Enums\PageStatusEnum;
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::create('pages', function (Blueprint $table) {
+            $table->id();
+            $table->text('url')->unique();
+            $table->string('status')->default(PageStatusEnum::Discovered->value)->index();
+            $table->string('title')->nullable();
+            $table->foreignId('instance_id')
+                ->nullable()
+                ->constrained('fedi_discover_instances')
+                ->nullOnDelete();
+            $table->timestampTz('posted_at')->nullable();
+            $table->timestampTz('fetched_at')->nullable();
+            $table->timestampTz('failed_at')->nullable();
+            $table->timestampsTz();
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('pages');
+    }
+};

database/migrations/2026_04_26_001957_create_page_links_table.php

@@ -0,0 +1,27 @@
+<?php
+
+declare(strict_types=1);
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::create('page_links', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('source_page_id')->constrained('pages');
+            $table->foreignId('target_page_id')->constrained('pages');
+            $table->timestampsTz();
+
+            $table->unique(['source_page_id', 'target_page_id']);
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('page_links');
+    }
+};

packages/Lvl0/FediDiscover/src/Actions/PollFediverseAction.php

@@ -0,0 +1,71 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Lvl0\FediDiscover\Actions;
+
+use Carbon\CarbonImmutable;
+use Illuminate\Support\Facades\Log;
+use Lvl0\FediDiscover\Clients\FediverseClientFactory;
+use Lvl0\FediDiscover\Events\UrlDiscovered;
+use Lvl0\FediDiscover\Models\Instance;
+use Lvl0\FediDiscover\ValueObjects\FediversePost;
+use Throwable;
+
+class PollFediverseAction
+{
+    public function __construct(private FediverseClientFactory $factory) {}
+
+    public function execute(Instance $instance): void
+    {
+        $client = $this->factory->for($instance);
+        $posts = $client->fetchPostsSince($instance, $instance->last_seen_id);
+
+        $posts->each(function (FediversePost $post) use ($instance) {
+            try {
+                $this->processLinks($post, $instance);
+            } catch (Throwable $e) {
+                Log::warning('fedi-discover:processLinks failed', [
+                    'instance_id' => $instance->id,
+                    'instance_url' => $instance->url,
+                    'post_url' => $post->selfUrl,
+                    'exception' => $e::class,
+                    'message' => $e->getMessage(),
+                ]);
+            }
+        });
+
+        if ($posts->isNotEmpty()) {
+            $instance->last_seen_id = $posts->first()->cursorId;
+        }
+
+        $instance->last_polled_at = now();
+        $instance->save();
+    }
+
+    private function processLinks(FediversePost $post, Instance $instance): void
+    {
+        if ($post->body === null) {
+            return;
+        }
+
+        $linksFound = preg_match_all('~https?://[^\s<>"\'()\[\]]+~', $post->body, $matches);
+
+        if ($linksFound === 0) {
+            return;
+        }
+
+        collect($matches[0])
+            ->map(fn (string $u) => rtrim($u, '.,;:!?'))
+            ->filter(fn (string $u) => filter_var($u, FILTER_VALIDATE_URL) !== false)
+            ->filter(fn (string $u) => parse_url($u, PHP_URL_HOST) !== parse_url($instance->url, PHP_URL_HOST))
+            ->unique()
+            ->each(fn (string $url) => UrlDiscovered::dispatch(
+                url: $url,
+                instanceId: $instance->id,
+                discoveredAt: CarbonImmutable::now(),
+                postUrl: $post->selfUrl,
+                postBody: $post->body,
+            ));
+    }
+}

packages/Lvl0/FediDiscover/src/Clients/FediverseClientFactory.php

@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Lvl0\FediDiscover\Clients;
+
+use Lvl0\FediDiscover\Config\InstanceType;
+use Lvl0\FediDiscover\Models\Instance;
+
+class FediverseClientFactory
+{
+    public function __construct(
+        private MastodonClient $mastodonClient,
+        private LemmyClient $lemmyClient,
+    ) {}
+
+    public function for(Instance $instance): FediverseClientInterface
+    {
+        return match ($instance->type) {
+            InstanceType::Mastodon => $this->mastodonClient,
+            InstanceType::Lemmy => $this->lemmyClient,
+        };
+    }
+}

packages/Lvl0/FediDiscover/src/Clients/FediverseClientInterface.php

@@ -0,0 +1,22 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Lvl0\FediDiscover\Clients;
+
+use Illuminate\Support\Collection;
+use Lvl0\FediDiscover\Models\Instance;
+use Lvl0\FediDiscover\ValueObjects\FediversePost;
+
+interface FediverseClientInterface
+{
+    /**
+     * Fetch posts newer than the given cursor.
+     *
+     * MUST return posts in newest-first order. Callers treat the
+     * first item as the new high-water mark.
+     *
+     * @return Collection<int, FediversePost>
+     */
+    public function fetchPostsSince(Instance $instance, ?string $lastSeenId): Collection;
+}

packages/Lvl0/FediDiscover/src/Clients/LemmyClient.php

@@ -0,0 +1,43 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Lvl0\FediDiscover\Clients;
+
+use Illuminate\Support\Collection;
+use Illuminate\Support\Facades\Http;
+use Lvl0\FediDiscover\Models\Instance;
+use Lvl0\FediDiscover\ValueObjects\FediversePost;
+
+class LemmyClient implements FediverseClientInterface
+{
+    public function fetchPostsSince(Instance $instance, ?string $lastSeenId): Collection
+    {
+        $url = 'https://' . parse_url($instance->url, PHP_URL_HOST) . '/api/v3/post/list';
+
+        $params = $lastSeenId !== null ? ['min_id' => $lastSeenId] : [];
+
+        $response = Http::withHeaders([
+            'User-Agent' => config('fedi-discover.http.user_agent'),
+        ])->timeout(config('fedi-discover.http.timeout'))->get($url, $params);
+
+        if (! $response->successful()) {
+            return collect();
+        }
+
+        return collect($response->json('posts', []))
+            ->map(fn (array $p) => $p['post'])
+            ->map(function (array $t) {
+                $parts = array_filter([$t['body'] ?? null, $t['url'] ?? null]);
+                $body = $parts ? implode(' ', $parts) : null;
+
+                return new FediversePost(
+                    cursorId: (string) $t['id'],
+                    selfUrl: $t['ap_id'],
+                    body: $body,
+                    title: $t['name'],
+                    publishedAt: $t['published']
+                );
+            });
+    }
+}

packages/Lvl0/FediDiscover/src/Clients/MastodonClient.php

@@ -0,0 +1,36 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Lvl0\FediDiscover\Clients;
+
+use Illuminate\Support\Collection;
+use Illuminate\Support\Facades\Http;
+use Lvl0\FediDiscover\Models\Instance;
+use Lvl0\FediDiscover\ValueObjects\FediversePost;
+
+class MastodonClient implements FediverseClientInterface
+{
+    public function fetchPostsSince(Instance $instance, ?string $lastSeenId): Collection
+    {
+        $url = 'https://' . parse_url($instance->url, PHP_URL_HOST) . '/api/v1/timelines/public';
+
+        $params = $lastSeenId !== null ? ['min_id' => $lastSeenId] : [];
+
+        $response = Http::withHeaders([
+            'User-Agent' => config('fedi-discover.http.user_agent'),
+        ])->timeout(config('fedi-discover.http.timeout'))->get($url, $params);
+
+        if (! $response->successful()) {
+            return collect();
+        }
+
+        return collect($response->json() ?? [])
+            ->map(fn (array $t) => new FediversePost(
+                cursorId: $t['id'],
+                selfUrl: $t['url'] ?? $t['uri'] ?? null,
+                body: $t['content'],
+                publishedAt: $t['created_at'] ?? null
+            ));
+    }
+}

packages/Lvl0/FediDiscover/src/Config/InstanceType.php

@@ -7,4 +7,5 @@
 enum InstanceType: string
 {
     case Mastodon = 'mastodon';
+    case Lemmy = 'lemmy';
 }

packages/Lvl0/FediDiscover/src/Console/Commands/PollInstancesCommand.php

@@ -0,0 +1,52 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Lvl0\FediDiscover\Console\Commands;
+
+use Illuminate\Console\Attributes\Description;
+use Illuminate\Console\Attributes\Signature;
+use Illuminate\Console\Command;
+use Illuminate\Support\Facades\Log;
+use Lvl0\FediDiscover\Actions\PollFediverseAction;
+use Lvl0\FediDiscover\Models\Instance;
+use Throwable;
+
+#[Signature('fedi-discover:poll')]
+#[Description('Poll all enabled fediverse instances for new URLs')]
+class PollInstancesCommand extends Command
+{
+    public function __construct(
+        private readonly PollFediverseAction $action
+    ) {
+        parent::__construct();
+    }
+
+    public function handle(): int
+    {
+        $hadFailure = false;
+
+        Instance::enabled()
+            ->get()
+            ->each(function (Instance $instance) use (&$hadFailure) {
+                try {
+                    $this->action->execute($instance);
+                } catch (Throwable $e) {
+                    $this->error("Failed to poll {$instance->url}: {$e->getMessage()}");
+                    Log::warning('fedi-discover:poll failed', [
+                        'instance_id' => $instance->id,
+                        'instance_url' => $instance->url,
+                        'exception' => $e::class,
+                        'message' => $e->getMessage(),
+                    ]);
+                    $hadFailure = true;
+                }
+            });
+
+        if ($hadFailure) {
+            return self::FAILURE;
+        }
+
+        return self::SUCCESS;
+    }
+}

packages/Lvl0/FediDiscover/src/Events/UrlDiscovered.php

@@ -1,26 +1,22 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Lvl0\FediDiscover\Events;
 
-use Illuminate\Broadcasting\InteractsWithSockets;
-use Illuminate\Broadcasting\PrivateChannel;
+use Carbon\CarbonImmutable;
 use Illuminate\Foundation\Events\Dispatchable;
 use Illuminate\Queue\SerializesModels;
 
 class UrlDiscovered
 {
-    use Dispatchable, InteractsWithSockets, SerializesModels;
+    use Dispatchable, SerializesModels;
 
     public function __construct(
         public string $url,
-        public ?string $postUrl,
-        public ?string $postBody
+        public int $instanceId,
+        public CarbonImmutable $discoveredAt,
+        public ?string $postUrl = null,
+        public ?string $postBody = null,
     ) {}
-
-    public function broadcastOn(): array
-    {
-        return [
-            new PrivateChannel('discovery'),
-        ];
-    }
 }

packages/Lvl0/FediDiscover/src/FediDiscoverServiceProvider.php

@@ -4,32 +4,31 @@
 
 namespace Lvl0\FediDiscover;
 
-use Illuminate\Support\Facades\Event;
 use Illuminate\Support\ServiceProvider;
+use Lvl0\FediDiscover\Clients\FediverseClientFactory;
+use Lvl0\FediDiscover\Console\Commands\PollInstancesCommand;
 use Lvl0\FediDiscover\Console\Commands\ValidateInstancesCommand;
-use Lvl0\FediDiscover\Events\UrlDiscovered;
 
 class FediDiscoverServiceProvider extends ServiceProvider
 {
     public function register(): void
     {
         $this->mergeConfigFrom(__DIR__ . '/../config/fedi-discover.php', 'fedi-discover');
+
+        $this->app->singleton(FediverseClientFactory::class);
     }
 
     public function boot(): void
     {
         $this->loadMigrationsFrom(__DIR__ . '/../database/migrations');
 
-        Event::listen(
-            UrlDiscovered::class,
-        );
-
         if ($this->app->runningInConsole()) {
             $this->publishes([
                 __DIR__ . '/../config/fedi-discover.php' => config_path('fedi-discover.php'),
             ], 'fedi-discover-config');
 
             $this->commands([
+                PollInstancesCommand::class,
                 ValidateInstancesCommand::class,
             ]);
         }

packages/Lvl0/FediDiscover/src/Models/Instance.php

@@ -19,7 +19,7 @@
  * @property bool $enabled
  * @property int $interval_seconds
  * @property array<string, mixed> $extras
- * @property int $last_seen_id
+ * @property string|null $last_seen_id
  * @property Carbon|null $last_polled_at
  * @property Carbon $created_at
  * @property Carbon $updated_at
@@ -40,7 +40,11 @@ class Instance extends Model
         'last_polled_at' => 'datetime',
     ];
 
-    public function scopeEnabled($query): Builder
+    /**
+     * @param  Builder<self>  $query
+     * @return Builder<self>
+     */
+    public function scopeEnabled(Builder $query): Builder
     {
         return $query->where('enabled', true);
     }

packages/Lvl0/FediDiscover/src/ValueObjects/FediversePost.php

@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Lvl0\FediDiscover\ValueObjects;
+
+class FediversePost
+{
+    public function __construct(
+        public string $cursorId,
+        public ?string $selfUrl,
+        public ?string $body = null,
+        public ?string $title = null,
+        public ?string $publishedAt = null,
+    ) {}
+}

packages/Lvl0/FediDiscover/tests/Feature/FediverseClientFactoryTest.php

@@ -0,0 +1,45 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Lvl0\FediDiscover\Tests\Feature;
+
+use Lvl0\FediDiscover\Clients\FediverseClientFactory;
+use Lvl0\FediDiscover\Clients\LemmyClient;
+use Lvl0\FediDiscover\Clients\MastodonClient;
+use Lvl0\FediDiscover\Config\InstanceType;
+use Lvl0\FediDiscover\Models\Instance;
+use Tests\TestCase;
+
+class FediverseClientFactoryTest extends TestCase
+{
+    public function test_it_resolves_mastodon_client_for_mastodon_instance_type(): void
+    {
+        $factory = app(FediverseClientFactory::class);
+
+        $instance = new Instance(['type' => InstanceType::Mastodon, 'url' => 'https://mastodon.social']);
+
+        $client = $factory->for($instance);
+
+        $this->assertInstanceOf(MastodonClient::class, $client);
+    }
+
+    public function test_it_resolves_lemmy_client_for_lemmy_instance_type(): void
+    {
+        $factory = app(FediverseClientFactory::class);
+
+        $instance = new Instance(['type' => InstanceType::Lemmy, 'url' => 'https://lemmy.world']);
+
+        $client = $factory->for($instance);
+
+        $this->assertInstanceOf(LemmyClient::class, $client);
+    }
+
+    public function test_it_is_registered_as_a_singleton_in_the_container(): void
+    {
+        $a = $this->app->make(FediverseClientFactory::class);
+        $b = $this->app->make(FediverseClientFactory::class);
+
+        $this->assertSame($a, $b);
+    }
+}

packages/Lvl0/FediDiscover/tests/Feature/LemmyClientTest.php

@@ -0,0 +1,150 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Lvl0\FediDiscover\Tests\Feature;
+
+use Illuminate\Support\Facades\Http;
+use Lvl0\FediDiscover\Clients\LemmyClient;
+use Lvl0\FediDiscover\Config\InstanceType;
+use Lvl0\FediDiscover\Models\Instance;
+use Lvl0\FediDiscover\ValueObjects\FediversePost;
+use Tests\TestCase;
+
+class LemmyClientTest extends TestCase
+{
+    public function test_it_maps_each_post_to_a_fediverse_post(): void
+    {
+        Http::fake([
+            '*' => Http::response([
+                'posts' => [
+                    $this->lemmyPost(
+                        id: 42,
+                        apId: 'https://lemmy.world/post/42',
+                        name: 'My Great Post',
+                        body: 'Some body text',
+                        published: '2026-04-25T10:00:00.000000',
+                    ),
+                ],
+            ], 200),
+        ]);
+
+        $posts = (new LemmyClient)->fetchPostsSince($this->lemmyInstance(), null);
+
+        $this->assertCount(1, $posts);
+        $this->assertInstanceOf(FediversePost::class, $posts->first());
+        $this->assertSame('42', $posts->first()->cursorId);
+        $this->assertSame('https://lemmy.world/post/42', $posts->first()->selfUrl);
+        $this->assertSame('My Great Post', $posts->first()->title);
+        $this->assertSame('Some body text', $posts->first()->body);
+        $this->assertSame('2026-04-25T10:00:00.000000', $posts->first()->publishedAt);
+    }
+
+    public function test_url_field_is_appended_to_body(): void
+    {
+        Http::fake([
+            '*' => Http::response([
+                'posts' => [
+                    $this->lemmyPost(
+                        id: 42,
+                        apId: 'https://lemmy.world/post/42',
+                        url: 'https://example-garden.blog/post-42',
+                        body: 'Some original text.',
+                    ),
+                ],
+            ], 200),
+        ]);
+
+        $post = (new LemmyClient)->fetchPostsSince($this->lemmyInstance(), null)->first();
+
+        $this->assertStringContainsString('Some original text.', $post->body);
+        $this->assertStringContainsString('https://example-garden.blog/post-42', $post->body);
+    }
+
+    public function test_url_absent_leaves_body_clean(): void
+    {
+        Http::fake([
+            '*' => Http::response([
+                'posts' => [
+                    $this->lemmyPost(
+                        id: 7,
+                        apId: 'https://lemmy.world/post/7',
+                        body: 'Just a regular post.',
+                    ),
+                ],
+            ], 200),
+        ]);
+
+        $post = (new LemmyClient)->fetchPostsSince($this->lemmyInstance(), null)->first();
+
+        $this->assertSame('Just a regular post.', $post->body);
+    }
+
+    public function test_it_handles_posts_without_a_body_key(): void
+    {
+        Http::fake([
+            '*' => Http::response([
+                'posts' => [
+                    [
+                        'post' => [
+                            'id' => 99,
+                            'ap_id' => 'https://lemmy.world/post/99',
+                            'url' => null,
+                            'name' => 'Link-only post',
+                            'published' => '2026-04-25T10:00:00.000000',
+                            // 'body' key intentionally absent — real Lemmy API omits it for link-only posts
+                        ],
+                    ],
+                ],
+            ], 200),
+        ]);
+
+        $post = (new LemmyClient)->fetchPostsSince($this->lemmyInstance(), null)->first();
+
+        $this->assertNull($post->body);
+    }
+
+    public function test_it_hits_the_post_list_endpoint_of_the_instance(): void
+    {
+        Http::fake([
+            'lemmy.world/api/v3/post/list*' => Http::response(['posts' => []], 200),
+        ]);
+
+        (new LemmyClient)->fetchPostsSince($this->lemmyInstance(), null);
+
+        Http::assertSent(fn ($request) => str_starts_with($request->url(), 'https://lemmy.world/api/v3/post/list')
+            && $request->method() === 'GET'
+        );
+    }
+
+    private function lemmyInstance(): Instance
+    {
+        return new Instance([
+            'type' => InstanceType::Lemmy,
+            'url' => 'https://lemmy.world',
+        ]);
+    }
+
+    /**
+     * @return array<string, mixed>
+     */
+    private function lemmyPost(
+        int $id,
+        string $apId,
+        ?string $url = null,
+        string $body = '',
+        string $name = 'A post title',
+        string $published = '2026-04-25T10:00:00.000000',
+    ): array {
+        return [
+            'post' => [
+                'id' => $id,
+                'ap_id' => $apId,
+                'url' => $url,
+                'body' => $body,
+                'name' => $name,
+                'published' => $published,
+            ],
+        ];
+    }
+}

packages/Lvl0/FediDiscover/tests/Feature/MastodonClientTest.php

@@ -0,0 +1,191 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Lvl0\FediDiscover\Tests\Feature;
+
+use Illuminate\Support\Collection;
+use Illuminate\Support\Facades\Http;
+use Lvl0\FediDiscover\Clients\MastodonClient;
+use Lvl0\FediDiscover\Config\InstanceType;
+use Lvl0\FediDiscover\Models\Instance;
+use Lvl0\FediDiscover\ValueObjects\FediversePost;
+use Tests\TestCase;
+
+class MastodonClientTest extends TestCase
+{
+    public function test_it_hits_the_public_timeline_endpoint_of_the_instance(): void
+    {
+        Http::fake([
+            'mastodon.social/api/v1/timelines/public*' => Http::response([], 200),
+        ]);
+
+        (new MastodonClient)->fetchPostsSince($this->mastodonInstance(), null);
+
+        Http::assertSent(fn ($request) => str_starts_with($request->url(), 'https://mastodon.social/api/v1/timelines/public')
+            && $request->method() === 'GET'
+        );
+    }
+
+    public function test_it_omits_min_id_on_first_poll(): void
+    {
+        Http::fake(['*' => Http::response([], 200)]);
+
+        (new MastodonClient)->fetchPostsSince($this->mastodonInstance(), null);
+
+        Http::assertSent(fn ($request) => ! str_contains($request->url(), 'min_id'));
+    }
+
+    public function test_it_passes_min_id_on_subsequent_polls(): void
+    {
+        Http::fake(['*' => Http::response([], 200)]);
+
+        (new MastodonClient)->fetchPostsSince($this->mastodonInstance(), '109876543210');
+
+        Http::assertSent(fn ($request) => str_contains($request->url(), 'min_id=109876543210'));
+    }
+
+    public function test_it_returns_an_empty_collection_when_the_api_returns_no_posts(): void
+    {
+        Http::fake(['*' => Http::response([], 200)]);
+
+        $posts = (new MastodonClient)->fetchPostsSince($this->mastodonInstance(), null);
+
+        $this->assertInstanceOf(Collection::class, $posts);
+        $this->assertTrue($posts->isEmpty());
+    }
+
+    public function test_it_maps_each_status_to_a_fediverse_post(): void
+    {
+        Http::fake([
+            '*' => Http::response([
+                $this->mastodonStatus(id: '109876543210', url: 'https://mastodon.social/@alice/109876543210', content: '<p>Hello</p>'),
+                $this->mastodonStatus(id: '109876543211', url: 'https://mastodon.social/@bob/109876543211', content: '<p>World</p>'),
+            ], 200),
+        ]);
+
+        $posts = (new MastodonClient)->fetchPostsSince($this->mastodonInstance(), null);
+
+        $this->assertCount(2, $posts);
+        $this->assertInstanceOf(FediversePost::class, $posts->first());
+        $this->assertSame('109876543210', $posts->first()->cursorId);
+        $this->assertSame('https://mastodon.social/@alice/109876543210', $posts->first()->selfUrl);
+        $this->assertSame('<p>Hello</p>', $posts->first()->body);
+    }
+
+    public function test_it_maps_published_at_from_created_at(): void
+    {
+        Http::fake([
+            '*' => Http::response([
+                $this->mastodonStatus(id: '109876543210', url: 'https://mastodon.social/@alice/109876543210'),
+            ], 200),
+        ]);
+
+        $posts = (new MastodonClient)->fetchPostsSince($this->mastodonInstance(), null);
+
+        $this->assertSame('2026-04-25T10:00:00Z', $posts->first()->publishedAt);
+    }
+
+    public function test_it_sets_title_to_null_for_mastodon_statuses(): void
+    {
+        Http::fake([
+            '*' => Http::response([
+                $this->mastodonStatus(id: '109876543210', url: 'https://mastodon.social/@alice/109876543210'),
+            ], 200),
+        ]);
+
+        $posts = (new MastodonClient)->fetchPostsSince($this->mastodonInstance(), null);
+
+        $this->assertNull($posts->first()->title);
+    }
+
+    public function test_it_falls_back_to_uri_when_url_is_null(): void
+    {
+        Http::fake([
+            '*' => Http::response([
+                $this->mastodonStatus(
+                    id: '109876543210',
+                    url: null,
+                    uri: 'https://hachyderm.io/users/bob/statuses/5678',
+                    content: '<p>federated post</p>'
+                ),
+            ], 200),
+        ]);
+
+        $posts = (new MastodonClient)->fetchPostsSince($this->mastodonInstance(), null);
+
+        $this->assertSame('https://hachyderm.io/users/bob/statuses/5678', $posts->first()->selfUrl);
+    }
+
+    public function test_it_preserves_newest_first_ordering_from_the_api(): void
+    {
+        Http::fake([
+            '*' => Http::response([
+                $this->mastodonStatus(id: '300', url: 'https://mastodon.social/@a/300'),
+                $this->mastodonStatus(id: '200', url: 'https://mastodon.social/@b/200'),
+                $this->mastodonStatus(id: '100', url: 'https://mastodon.social/@c/100'),
+            ], 200),
+        ]);
+
+        $posts = (new MastodonClient)->fetchPostsSince($this->mastodonInstance(), null);
+
+        $this->assertSame(['300', '200', '100'], $posts->pluck('cursorId')->all());
+    }
+
+    public function test_it_returns_an_empty_collection_on_a_non_2xx_response(): void
+    {
+        Http::fake(['*' => Http::response('Too many requests', 429)]);
+
+        $posts = (new MastodonClient)->fetchPostsSince($this->mastodonInstance(), null);
+
+        $this->assertInstanceOf(Collection::class, $posts);
+        $this->assertTrue($posts->isEmpty());
+    }
+
+    public function test_it_returns_an_empty_collection_when_the_response_body_is_not_json(): void
+    {
+        Http::fake(['*' => Http::response('<html>error</html>', 200)]);
+
+        $posts = (new MastodonClient)->fetchPostsSince($this->mastodonInstance(), null);
+
+        $this->assertInstanceOf(Collection::class, $posts);
+        $this->assertTrue($posts->isEmpty());
+    }
+
+    public function test_it_sends_the_configured_user_agent(): void
+    {
+        Http::fake(['*' => Http::response([], 200)]);
+
+        (new MastodonClient)->fetchPostsSince($this->mastodonInstance(), null);
+
+        $expected = config('fedi-discover.http.user_agent');
+        Http::assertSent(fn ($request) => $request->header('User-Agent')[0] === $expected);
+    }
+
+    private function mastodonInstance(): Instance
+    {
+        return new Instance([
+            'type' => InstanceType::Mastodon,
+            'url' => 'https://mastodon.social',
+        ]);
+    }
+
+    /**
+     * @return array<string, mixed>
+     */
+    private function mastodonStatus(
+        string $id,
+        ?string $url = null,
+        ?string $uri = null,
+        string $content = '<p>example</p>',
+    ): array {
+        return [
+            'id' => $id,
+            'url' => $url,
+            'uri' => $uri ?? "https://mastodon.social/users/x/statuses/{$id}",
+            'content' => $content,
+            'created_at' => '2026-04-25T10:00:00Z',
+            'account' => ['acct' => 'alice@mastodon.social'],
+        ];
+    }
+}

packages/Lvl0/FediDiscover/tests/Feature/PollFediverseActionTest.php

@@ -0,0 +1,235 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Lvl0\FediDiscover\Tests\Feature;
+
+use Carbon\CarbonImmutable;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Facades\Event;
+use Lvl0\FediDiscover\Actions\PollFediverseAction;
+use Lvl0\FediDiscover\Clients\FediverseClientFactory;
+use Lvl0\FediDiscover\Clients\FediverseClientInterface;
+use Lvl0\FediDiscover\Config\InstanceType;
+use Lvl0\FediDiscover\Events\UrlDiscovered;
+use Lvl0\FediDiscover\Models\Instance;
+use Lvl0\FediDiscover\ValueObjects\FediversePost;
+use Mockery;
+use Tests\TestCase;
+
+class PollFediverseActionTest extends TestCase
+{
+    use RefreshDatabase;
+
+    public function test_it_fires_one_event_per_extracted_url(): void
+    {
+        Event::fake([UrlDiscovered::class]);
+
+        $this->poll([
+            new FediversePost('1', 'https://mastodon.social/@alice/1', 'See https://example.com/one and https://other.example/two'),
+        ]);
+
+        Event::assertDispatched(UrlDiscovered::class, fn (UrlDiscovered $e) => $e->url === 'https://example.com/one');
+        Event::assertDispatched(UrlDiscovered::class, fn (UrlDiscovered $e) => $e->url === 'https://other.example/two');
+        Event::assertDispatchedTimes(UrlDiscovered::class, 2);
+    }
+
+    public function test_it_extracts_urls_from_html_anchor_tags(): void
+    {
+        Event::fake([UrlDiscovered::class]);
+
+        $this->poll([
+            new FediversePost('1', 'https://mastodon.social/@alice/1', '<p>Check <a href="https://example.com/article">this</a>!</p>'),
+        ]);
+
+        Event::assertDispatched(UrlDiscovered::class, fn (UrlDiscovered $e) => $e->url === 'https://example.com/article');
+        Event::assertDispatchedTimes(UrlDiscovered::class, 1);
+    }
+
+    public function test_it_extracts_urls_from_markdown_links(): void
+    {
+        Event::fake([UrlDiscovered::class]);
+
+        $this->poll(
+            posts: [new FediversePost('1', 'https://lemmy.world/post/42', 'A [great article](https://example.com/article) about trees.')],
+            instanceUrl: 'https://lemmy.world',
+        );
+
+        Event::assertDispatched(UrlDiscovered::class, fn (UrlDiscovered $e) => $e->url === 'https://example.com/article');
+        Event::assertDispatchedTimes(UrlDiscovered::class, 1);
+    }
+
+    public function test_it_strips_trailing_punctuation_from_urls(): void
+    {
+        Event::fake([UrlDiscovered::class]);
+
+        $this->poll([
+            new FediversePost('1', 'https://mastodon.social/@alice/1', 'Check https://example.com/article, it is great. Also https://other.example/page.'),
+        ]);
+
+        Event::assertDispatched(UrlDiscovered::class, fn (UrlDiscovered $e) => $e->url === 'https://example.com/article');
+        Event::assertDispatched(UrlDiscovered::class, fn (UrlDiscovered $e) => $e->url === 'https://other.example/page');
+    }
+
+    public function test_it_deduplicates_urls_within_a_single_post(): void
+    {
+        Event::fake([UrlDiscovered::class]);
+
+        $this->poll([
+            new FediversePost('1', 'https://mastodon.social/@alice/1', 'Here is https://example.com/article and again https://example.com/article'),
+        ]);
+
+        Event::assertDispatchedTimes(UrlDiscovered::class, 1);
+    }
+
+    public function test_it_filters_urls_on_the_polling_instance_host(): void
+    {
+        Event::fake([UrlDiscovered::class]);
+
+        $this->poll([
+            new FediversePost('1', 'https://mastodon.social/@alice/1', 'See https://mastodon.social/@bob/42 and https://example.com/article'),
+        ]);
+
+        Event::assertDispatched(UrlDiscovered::class, fn (UrlDiscovered $e) => $e->url === 'https://example.com/article');
+        Event::assertDispatchedTimes(UrlDiscovered::class, 1);
+    }
+
+    public function test_it_ignores_posts_with_a_null_body(): void
+    {
+        Event::fake([UrlDiscovered::class]);
+
+        $this->poll([
+            new FediversePost('1', 'https://mastodon.social/@alice/1', null),
+        ]);
+
+        Event::assertNotDispatched(UrlDiscovered::class);
+    }
+
+    public function test_it_ignores_non_http_schemes(): void
+    {
+        Event::fake([UrlDiscovered::class]);
+
+        $this->poll([
+            new FediversePost('1', 'https://mastodon.social/@alice/1', 'Email mailto:alice@example.com or try ftp://files.example.com/x'),
+        ]);
+
+        Event::assertNotDispatched(UrlDiscovered::class);
+    }
+
+    public function test_it_passes_post_self_url_and_body_through_to_the_event(): void
+    {
+        Event::fake([UrlDiscovered::class]);
+
+        $instance = $this->makeInstance();
+        $body = 'Here is https://example.com/article with surrounding context.';
+
+        $this->pollInstance($instance, [
+            new FediversePost('1', 'https://mastodon.social/@alice/1', $body),
+        ]);
+
+        Event::assertDispatched(UrlDiscovered::class, fn (UrlDiscovered $e) => $e->postUrl === 'https://mastodon.social/@alice/1'
+            && $e->postBody === $body
+            && $e->instanceId === $instance->id
+            && $e->discoveredAt instanceof CarbonImmutable
+        );
+    }
+
+    public function test_it_processes_multiple_posts(): void
+    {
+        Event::fake([UrlDiscovered::class]);
+
+        $this->poll([
+            new FediversePost('1', 'https://mastodon.social/@alice/1', 'See https://example.com/one'),
+            new FediversePost('2', 'https://mastodon.social/@bob/2', 'Also https://example.com/two'),
+        ]);
+
+        Event::assertDispatchedTimes(UrlDiscovered::class, 2);
+    }
+
+    public function test_it_updates_last_seen_id_to_the_first_posts_cursor(): void
+    {
+        $instance = $this->makeInstance();
+
+        // Clients return newest-first; the action treats posts[0]
+        // as the new high-water mark without inspecting cursor values.
+        $this->pollInstance($instance, [
+            new FediversePost('newest-cursor', 'https://mastodon.social/@alice/3', 'x'),
+            new FediversePost('middle-cursor', 'https://mastodon.social/@bob/2', 'y'),
+            new FediversePost('oldest-cursor', 'https://mastodon.social/@carol/1', 'z'),
+        ]);
+
+        $this->assertSame('newest-cursor', $instance->fresh()->last_seen_id);
+    }
+
+    public function test_it_updates_last_polled_at(): void
+    {
+        $instance = $this->makeInstance();
+        $this->assertNull($instance->last_polled_at);
+
+        $this->pollInstance($instance, [
+            new FediversePost('1', 'https://mastodon.social/@alice/1', 'x'),
+        ]);
+
+        $this->assertNotNull($instance->fresh()->last_polled_at);
+    }
+
+    public function test_it_passes_the_existing_last_seen_id_to_the_client(): void
+    {
+        $instance = $this->makeInstance(['last_seen_id' => '999']);
+
+        $client = Mockery::mock(FediverseClientInterface::class);
+        $client->shouldReceive('fetchPostsSince')
+            ->once()
+            ->with($instance, $instance->last_seen_id)
+            ->andReturn(collect());
+
+        $factory = Mockery::mock(FediverseClientFactory::class);
+        $factory->shouldReceive('for')->with($instance)->andReturn($client);
+
+        (new PollFediverseAction($factory))->execute($instance);
+    }
+
+    public function test_it_leaves_last_seen_id_unchanged_when_no_posts_are_returned(): void
+    {
+        $instance = $this->makeInstance(['last_seen_id' => '500']);
+
+        $this->pollInstance($instance, []);
+
+        $this->assertSame('500', $instance->fresh()->last_seen_id);
+    }
+
+    /**
+     * @param  array<FediversePost>  $posts
+     */
+    private function poll(array $posts, string $instanceUrl = 'https://mastodon.social'): void
+    {
+        $this->pollInstance($this->makeInstance(['url' => $instanceUrl]), $posts);
+    }
+
+    /**
+     * @param  array<FediversePost>  $posts
+     */
+    private function pollInstance(Instance $instance, array $posts): void
+    {
+        $client = Mockery::mock(FediverseClientInterface::class);
+        $client->shouldReceive('fetchPostsSince')->andReturn(collect($posts));
+
+        $factory = Mockery::mock(FediverseClientFactory::class);
+        $factory->shouldReceive('for')->andReturn($client);
+
+        (new PollFediverseAction($factory))->execute($instance);
+    }
+
+    /**
+     * @param  array<string, mixed>  $overrides
+     */
+    private function makeInstance(array $overrides = []): Instance
+    {
+        return Instance::create(array_merge([
+            'type' => InstanceType::Mastodon,
+            'url' => 'https://mastodon.social',
+            'enabled' => true,
+            'interval_seconds' => 600,
+        ], $overrides));
+    }
+}

packages/Lvl0/FediDiscover/tests/Feature/PollInstancesCommandTest.php

@@ -0,0 +1,154 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Lvl0\FediDiscover\Tests\Feature;
+
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Lvl0\FediDiscover\Actions\PollFediverseAction;
+use Lvl0\FediDiscover\Clients\FediverseClientFactory;
+use Lvl0\FediDiscover\Clients\FediverseClientInterface;
+use Lvl0\FediDiscover\Config\InstanceType;
+use Lvl0\FediDiscover\Models\Instance;
+use Mockery;
+use RuntimeException;
+use Tests\TestCase;
+
+class PollInstancesCommandTest extends TestCase
+{
+    use RefreshDatabase;
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        // Bind a no-op factory stub so the command can resolve PollFediverseAction
+        // from the container without making real HTTP calls.
+        $clientStub = Mockery::mock(FediverseClientInterface::class);
+        $clientStub->shouldReceive('fetchPostsSince')->andReturn(collect());
+
+        $factoryStub = Mockery::mock(FediverseClientFactory::class);
+        $factoryStub->shouldReceive('for')->andReturn($clientStub);
+
+        $this->app->instance(FediverseClientFactory::class, $factoryStub);
+    }
+
+    public function test_it_exits_zero_when_there_are_no_enabled_instances(): void
+    {
+        $this->artisan('fedi-discover:poll')
+            ->assertExitCode(0);
+    }
+
+    public function test_it_calls_the_action_for_each_enabled_instance_and_skips_disabled(): void
+    {
+        $enabled1 = Instance::create([
+            'type' => InstanceType::Mastodon,
+            'url' => 'https://mastodon.social',
+            'enabled' => true,
+            'interval_seconds' => 600,
+        ]);
+
+        $enabled2 = Instance::create([
+            'type' => InstanceType::Mastodon,
+            'url' => 'https://fosstodon.org',
+            'enabled' => true,
+            'interval_seconds' => 600,
+        ]);
+
+        Instance::create([
+            'type' => InstanceType::Mastodon,
+            'url' => 'https://disabled.example',
+            'enabled' => false,
+            'interval_seconds' => 600,
+        ]);
+
+        $calledWith = [];
+
+        $action = Mockery::mock(PollFediverseAction::class);
+        $action->shouldReceive('execute')
+            ->twice()
+            ->withArgs(function (Instance $instance) use (&$calledWith): bool {
+                $calledWith[] = $instance->url;
+
+                return true;
+            });
+
+        $this->app->instance(PollFediverseAction::class, $action);
+
+        $this->artisan('fedi-discover:poll')->assertExitCode(0);
+
+        $this->assertEqualsCanonicalizing(
+            [$enabled1->url, $enabled2->url],
+            $calledWith,
+        );
+    }
+
+    public function test_one_instance_throwing_does_not_stop_remaining_instances_from_being_polled(): void
+    {
+        Instance::create([
+            'type' => InstanceType::Mastodon,
+            'url' => 'https://failing.example',
+            'enabled' => true,
+            'interval_seconds' => 600,
+        ]);
+
+        $healthy = Instance::create([
+            'type' => InstanceType::Mastodon,
+            'url' => 'https://healthy.example',
+            'enabled' => true,
+            'interval_seconds' => 600,
+        ]);
+
+        $calledWith = [];
+
+        $action = Mockery::mock(PollFediverseAction::class);
+        $action->shouldReceive('execute')
+            ->twice()
+            ->andReturnUsing(function (Instance $instance) use (&$calledWith): void {
+                $calledWith[] = $instance->url;
+
+                if ($instance->url === 'https://failing.example') {
+                    throw new RuntimeException('Connection refused');
+                }
+            });
+
+        $this->app->instance(PollFediverseAction::class, $action);
+
+        $this->artisan('fedi-discover:poll')->assertExitCode(1);
+
+        $this->assertEqualsCanonicalizing(
+            ['https://failing.example', $healthy->url],
+            $calledWith,
+        );
+    }
+
+    public function test_it_exits_one_when_at_least_one_instance_fails(): void
+    {
+        Instance::create([
+            'type' => InstanceType::Mastodon,
+            'url' => 'https://failing.example',
+            'enabled' => true,
+            'interval_seconds' => 600,
+        ]);
+
+        Instance::create([
+            'type' => InstanceType::Mastodon,
+            'url' => 'https://healthy.example',
+            'enabled' => true,
+            'interval_seconds' => 600,
+        ]);
+
+        $action = Mockery::mock(PollFediverseAction::class);
+        $action->shouldReceive('execute')
+            ->twice()
+            ->andReturnUsing(function (Instance $instance): void {
+                if ($instance->url === 'https://failing.example') {
+                    throw new RuntimeException('Connection refused');
+                }
+            });
+
+        $this->app->instance(PollFediverseAction::class, $action);
+
+        $this->artisan('fedi-discover:poll')->assertExitCode(1);
+    }
+}

packages/Lvl0/FediDiscover/tests/Unit/UrlDiscoveredTest.php

@@ -4,6 +4,7 @@
 
 namespace Lvl0\FediDiscover\Tests\Unit;
 
+use Carbon\CarbonImmutable;
 use Lvl0\FediDiscover\Events\UrlDiscovered;
 use PHPUnit\Framework\TestCase;
 
@@ -11,13 +12,19 @@ class UrlDiscoveredTest extends TestCase
 {
     public function test_it_exposes_all_payload_fields(): void
     {
+        $discoveredAt = CarbonImmutable::parse('2026-04-26T12:00:00');
+
         $event = new UrlDiscovered(
             url: 'https://example.com/article',
+            instanceId: 42,
+            discoveredAt: $discoveredAt,
             postUrl: 'https://mastodon.social/@alice/109876543210',
             postBody: 'Check out this article: https://example.com/article'
         );
 
         $this->assertSame('https://example.com/article', $event->url);
+        $this->assertSame(42, $event->instanceId);
+        $this->assertTrue($discoveredAt->eq($event->discoveredAt));
         $this->assertSame('https://mastodon.social/@alice/109876543210', $event->postUrl);
         $this->assertSame('Check out this article: https://example.com/article', $event->postBody);
     }
@@ -26,6 +33,8 @@ public function test_post_body_is_nullable(): void
     {
         $event = new UrlDiscovered(
             url: 'https://example.com/article',
+            instanceId: 1,
+            discoveredAt: CarbonImmutable::parse('2026-04-26T12:00:00'),
             postUrl: 'https://mastodon.social/@alice/109876543210',
             postBody: null
         );

phpunit.xml

@@ -3,6 +3,11 @@
          xsi:noNamespaceSchemaLocation="vendor/phpunit/phpunit/phpunit.xsd"
          bootstrap="vendor/autoload.php"
          colors="true"
+    processIsolation="false"
+    displayDetailsOnPhpunitDeprecations="true"
+    displayDetailsOnTestsThatTriggerErrors="true"
+    displayDetailsOnTestsThatTriggerWarnings="true"
+    displayDetailsOnTestsThatTriggerNotices="true"
 >
     <testsuites>
         <testsuite name="Unit">
@@ -22,19 +27,21 @@
         </include>
     </source>
     <php>
-        <env name="APP_ENV" value="testing"/>
-        <env name="APP_MAINTENANCE_DRIVER" value="file"/>
-        <env name="BCRYPT_ROUNDS" value="4"/>
-        <env name="BROADCAST_CONNECTION" value="null"/>
-        <env name="CACHE_STORE" value="array"/>
-        <env name="DB_CONNECTION" value="sqlite"/>
-        <env name="DB_DATABASE" value=":memory:"/>
-        <env name="DB_URL" value=""/>
-        <env name="MAIL_MAILER" value="array"/>
-        <env name="QUEUE_CONNECTION" value="sync"/>
-        <env name="SESSION_DRIVER" value="array"/>
-        <env name="PULSE_ENABLED" value="false"/>
-        <env name="TELESCOPE_ENABLED" value="false"/>
-        <env name="NIGHTWATCH_ENABLED" value="false"/>
+        <server name="APP_ENV" value="testing"/>
+        <server name="APP_MAINTENANCE_DRIVER" value="file"/>
+        <server name="BCRYPT_ROUNDS" value="4"/>
+        <server name="BROADCAST_CONNECTION" value="null"/>
+        <server name="CACHE_STORE" value="array"/>
+        <server name="DB_CONNECTION" value="sqlite"/>
+        <server name="DB_DATABASE" value=":memory:"/>
+        <server name="DB_URL" value=""/>
+        <server name="MAIL_MAILER" value="array"/>
+        <server name="QUEUE_CONNECTION" value="sync"/>
+        <server name="SESSION_DRIVER" value="array"/>
+        <server name="PULSE_ENABLED" value="false"/>
+        <server name="TELESCOPE_ENABLED" value="false"/>
+        <server name="NIGHTWATCH_ENABLED" value="false"/>
+        <ini name="display_errors" value="On"/>
+        <ini name="error_reporting" value="-1"/>
     </php>
 </phpunit>

routes/console.php

@@ -1,8 +1,8 @@
 <?php
 
-use Illuminate\Foundation\Inspiring;
-use Illuminate\Support\Facades\Artisan;
+use Illuminate\Support\Facades\Schedule;
 
-Artisan::command('inspire', function () {
-    $this->comment(Inspiring::quote());
-})->purpose('Display an inspiring quote');
+Schedule::command('fedi-discover:poll')
+    ->everyMinute()
+    ->withoutOverlapping(5)
+    ->runInBackground();

tests/Feature/UrlDiscoveryTest.php

@@ -0,0 +1,139 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\Feature;
+
+use App\Enums\PageStatusEnum;
+use App\Listeners\UrlDiscoveredListener;
+use App\Models\Page;
+use App\Models\PageLink;
+use Carbon\CarbonImmutable;
+use Illuminate\Events\CallQueuedListener;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Facades\Queue;
+use Lvl0\FediDiscover\Config\InstanceType;
+use Lvl0\FediDiscover\Events\UrlDiscovered;
+use Lvl0\FediDiscover\Models\Instance;
+use Tests\TestCase;
+
+class UrlDiscoveryTest extends TestCase
+{
+    use RefreshDatabase;
+
+    // ---------------------------------------------------------------------------
+    // Helpers
+    // ---------------------------------------------------------------------------
+
+    private function makeInstance(): Instance
+    {
+        return Instance::factory()
+            ->type(InstanceType::Mastodon)
+            ->enabled()
+            ->create();
+    }
+
+    private function makeEvent(Instance $instance, array $overrides = []): UrlDiscovered
+    {
+        return new UrlDiscovered(
+            url: $overrides['url'] ?? 'https://example-blog.com/article',
+            instanceId: $overrides['instanceId'] ?? $instance->id,
+            discoveredAt: $overrides['discoveredAt'] ?? CarbonImmutable::parse('2026-04-26T12:00:00Z'),
+            postUrl: array_key_exists('postUrl', $overrides) ? $overrides['postUrl'] : 'https://mastodon.social/@alice/109876543210',
+            postBody: array_key_exists('postBody', $overrides) ? $overrides['postBody'] : 'check this out https://example-blog.com/article',
+        );
+    }
+
+    // ---------------------------------------------------------------------------
+    // Test 9 — happy path
+    // ---------------------------------------------------------------------------
+
+    public function test_listener_creates_target_page_and_source_page_with_link(): void
+    {
+        $instance = $this->makeInstance();
+        $discoveredAt = CarbonImmutable::parse('2026-04-26T12:00:00Z');
+
+        $event = new UrlDiscovered(
+            url: 'https://example-blog.com/article',
+            instanceId: $instance->id,
+            discoveredAt: $discoveredAt,
+            postUrl: 'https://mastodon.social/@alice/109876543210',
+            postBody: 'check this out https://example-blog.com/article',
+        );
+
+        event($event);
+
+        // Target page
+        $targetPage = Page::where('url', 'https://example-blog.com/article')->first();
+        $this->assertNotNull($targetPage);
+        $this->assertSame(PageStatusEnum::Discovered, $targetPage->status);
+        $this->assertSame($instance->id, $targetPage->instance_id);
+
+        // Source page
+        $sourcePage = Page::where('url', 'https://mastodon.social/@alice/109876543210')->first();
+        $this->assertNotNull($sourcePage);
+        $this->assertSame(PageStatusEnum::Discovered, $sourcePage->status);
+        $this->assertSame($instance->id, $sourcePage->instance_id);
+        $this->assertNull($sourcePage->fetched_at);
+
+        // Edge
+        $link = PageLink::where('source_page_id', $sourcePage->id)
+            ->where('target_page_id', $targetPage->id)
+            ->first();
+        $this->assertNotNull($link);
+    }
+
+    // ---------------------------------------------------------------------------
+    // Test 10 — idempotency
+    // ---------------------------------------------------------------------------
+
+    public function test_listener_is_idempotent_on_repeated_event(): void
+    {
+        $instance = $this->makeInstance();
+        $event = $this->makeEvent($instance);
+
+        event($event);
+        event($event);
+
+        $this->assertSame(2, Page::count());
+        $this->assertSame(1, PageLink::count());
+    }
+
+    // ---------------------------------------------------------------------------
+    // Test 11 — null postUrl: only target page, no edge
+    // ---------------------------------------------------------------------------
+
+    public function test_listener_with_null_post_url_creates_only_target_page(): void
+    {
+        $instance = $this->makeInstance();
+        $event = $this->makeEvent($instance, ['postUrl' => null, 'postBody' => null]);
+
+        event($event);
+
+        $this->assertSame(1, Page::count());
+        $this->assertSame(0, PageLink::count());
+
+        $targetPage = Page::where('url', 'https://example-blog.com/article')->first();
+        $this->assertNotNull($targetPage);
+        $this->assertSame(PageStatusEnum::Discovered, $targetPage->status);
+        $this->assertSame($instance->id, $targetPage->instance_id);
+    }
+
+    // ---------------------------------------------------------------------------
+    // Test 12 — listener is queued, not run inline
+    // ---------------------------------------------------------------------------
+
+    public function test_listener_is_pushed_to_queue_not_run_inline(): void
+    {
+        Queue::fake();
+
+        $instance = $this->makeInstance();
+        $event = $this->makeEvent($instance);
+
+        event($event);
+
+        Queue::assertPushed(CallQueuedListener::class, function (CallQueuedListener $job): bool {
+            return $job->class === UrlDiscoveredListener::class;
+        });
+    }
+}

tests/Unit/Models/PageLinkTest.php

@@ -0,0 +1,52 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\Unit\Models;
+
+use App\Models\Page;
+use App\Models\PageLink;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class PageLinkTest extends TestCase
+{
+    use RefreshDatabase;
+
+    public function test_page_link_model_fillable_fields_and_relationships(): void
+    {
+        $source = Page::factory()->create(['url' => 'https://source.example.com/post/1']);
+        $target = Page::factory()->create(['url' => 'https://target.example.com/page/2']);
+
+        $link = PageLink::create([
+            'source_page_id' => $source->id,
+            'target_page_id' => $target->id,
+        ]);
+
+        $fresh = $link->fresh();
+
+        $this->assertNotNull($fresh);
+        $this->assertSame($source->id, $fresh->source_page_id);
+        $this->assertSame($target->id, $fresh->target_page_id);
+
+        $this->assertInstanceOf(Page::class, $fresh->sourcePage);
+        $this->assertSame($source->id, $fresh->sourcePage->id);
+
+        $this->assertInstanceOf(Page::class, $fresh->targetPage);
+        $this->assertSame($target->id, $fresh->targetPage->id);
+    }
+
+    public function test_page_link_factory_with_source_and_target_methods_create_a_link(): void
+    {
+        $source = Page::factory()->create(['url' => 'https://source.example.com/post/1']);
+        $target = Page::factory()->create(['url' => 'https://target.example.com/page/2']);
+
+        $link = PageLink::factory()
+            ->withSource($source)
+            ->withTarget($target)
+            ->create();
+
+        $this->assertSame($source->id, $link->source_page_id);
+        $this->assertSame($target->id, $link->target_page_id);
+    }
+}

tests/Unit/Models/PageTest.php

@@ -0,0 +1,99 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\Unit\Models;
+
+use App\Enums\PageStatusEnum;
+use App\Models\Page;
+use App\Models\PageLink;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Lvl0\FediDiscover\Config\InstanceType;
+use Lvl0\FediDiscover\Models\Instance;
+use Tests\TestCase;
+
+class PageTest extends TestCase
+{
+    use RefreshDatabase;
+
+    public function test_page_model_fillable_fields_can_be_mass_assigned(): void
+    {
+        $page = Page::create([
+            'url' => 'https://example.com/article',
+            'status' => 'discovered',
+            'title' => 'An Example Article',
+            'instance_id' => null,
+            'posted_at' => null,
+            'fetched_at' => null,
+        ]);
+
+        $fresh = $page->fresh();
+
+        $this->assertNotNull($fresh);
+        $this->assertSame('https://example.com/article', $fresh->url);
+        $this->assertSame('An Example Article', $fresh->title);
+        $this->assertNull($fresh->instance_id);
+    }
+
+    public function test_page_instance_relationship_returns_the_owning_instance(): void
+    {
+        $instance = Instance::factory()
+            ->type(InstanceType::Mastodon)
+            ->enabled()
+            ->create();
+
+        $page = Page::create([
+            'url' => 'https://example.com/post/1',
+            'status' => 'discovered',
+            'instance_id' => $instance->id,
+        ]);
+
+        $fresh = $page->fresh();
+
+        $this->assertInstanceOf(Instance::class, $fresh->instance);
+        $this->assertSame($instance->id, $fresh->instance->id);
+    }
+
+    public function test_page_outgoing_and_incoming_links_relationships(): void
+    {
+        $source = Page::factory()->create(['url' => 'https://example.com/source']);
+        $target = Page::factory()->create(['url' => 'https://example.com/target']);
+
+        PageLink::create([
+            'source_page_id' => $source->id,
+            'target_page_id' => $target->id,
+        ]);
+
+        $freshSource = $source->fresh();
+        $freshTarget = $target->fresh();
+
+        $this->assertCount(1, $freshSource->outgoingLinks);
+        $this->assertCount(0, $freshSource->incomingLinks);
+        $this->assertCount(1, $freshTarget->incomingLinks);
+        $this->assertCount(0, $freshTarget->outgoingLinks);
+
+        $this->assertSame($source->id, $freshTarget->incomingLinks->first()->source_page_id);
+        $this->assertSame($target->id, $freshSource->outgoingLinks->first()->target_page_id);
+    }
+
+    public function test_page_status_is_cast_to_enum(): void
+    {
+        $cases = [
+            ['string' => 'discovered', 'enum' => PageStatusEnum::Discovered],
+            ['string' => 'fetched',    'enum' => PageStatusEnum::Fetched],
+            ['string' => 'failed',     'enum' => PageStatusEnum::Failed],
+        ];
+
+        foreach ($cases as ['string' => $raw, 'enum' => $expected]) {
+            $page = Page::create([
+                'url' => 'https://example.com/' . $raw,
+                'status' => $raw,
+            ]);
+
+            $fresh = $page->fresh();
+
+            $this->assertInstanceOf(PageStatusEnum::class, $fresh->status, "status '{$raw}' should cast to PageStatusEnum");
+            $this->assertSame($expected, $fresh->status, "status '{$raw}' should equal PageStatusEnum::{$expected->name}");
+        }
+    }
+}