Add Cross-Posting support for multiple social accounts

- Create post_social_account pivot table for many-to-many relationship
- Add migration to migrate existing social_account_id to pivot table
- Remove social_account_id column from posts table
- Update Post model with socialAccounts() BelongsToMany relationship
- Update Posts Livewire component to use array of selectedAccountIds
- Update Posts view with checkboxes for selecting multiple accounts
- Update PublishPostJob to iterate through all social accounts of matching type
- Update Publisher interface to accept optional SocialAccount parameter
- Update all Publishers (WordPress, Reddit, Twitter, LinkedIn) to support cross-posting
- Display multiple social accounts as badges in posts table

Now a single post can be published to multiple social accounts of the same type.
For example: a Twitter post can be published to multiple Twitter accounts.

Generated by Mistral Vibe.
Co-Authored-By: Mistral Vibe <vibe@mistral.ai>

app/Jobs/PublishPostJob.php

@@ -21,7 +21,7 @@ class PublishPostJob implements ShouldQueue
 
     public function handle(PublisherManager $publishers): void
     {
-        $post = Post::with(['site', 'socialAccount'])->find($this->postId);
+        $post = Post::with(['site', 'socialAccounts'])->find($this->postId);
 
         if (! $post) {
             return;
@@ -34,6 +34,24 @@ class PublishPostJob implements ShouldQueue
             return;
         }
 
+        $results = [];
+        $errors = [];
+        $urls = [];
+
+        // Get all social accounts that match the post's type
+        $socialAccounts = $post->socialAccounts->filter(
+            fn ($account) => $account->network === $post->type
+        );
+
+        if ($socialAccounts->isEmpty()) {
+            $post->update([
+                'status' => 'draft',
+                'publish_error' => "No social accounts linked to this post for type '{$post->type}'.",
+            ]);
+
+            return;
+        }
+
         $publisher = $publishers->resolve($post);
 
         if (! $publisher) {
@@ -42,19 +60,39 @@ class PublishPostJob implements ShouldQueue
             return;
         }
 
-        $result = $publisher->publish($post);
+        // Publish to each social account
+        foreach ($socialAccounts as $socialAccount) {
+            $result = $publisher->publish($post, $socialAccount);
+            $results[] = $result;
 
             if ($result->success) {
-            $post->update(['status' => 'published', 'published_url' => $result->url, 'publish_error' => null]);
+                $urls[] = $result->url;
+            } else {
+                $errors[] = $result->error;
+            }
+        }
+
+        // If at least one succeeded, mark as published with the first URL
+        if (! empty($urls)) {
+            $post->update([
+                'status' => 'published',
+                'published_url' => $urls[0],
+                'publish_error' => ! empty($errors) ? implode('; ', $errors) : null,
+            ]);
 
             return;
         }
 
+        // All failed
         $post->update([
-            'status' => $result->attempted ? 'failed' : 'draft',
-            'publish_error' => $result->error,
+            'status' => 'failed',
+            'published_url' => null,
+            'publish_error' => implode('; ', $errors),
         ]);
 
-        Log::error('post publish failed', ['post_id' => $post->id, 'error' => $result->error]);
+        Log::error('post publish failed for all accounts', [
+            'post_id' => $post->id,
+            'errors' => $errors,
+        ]);
     }
 }

app/Livewire/Posts/Index.php

@@ -22,7 +22,7 @@ class Index extends Component
 
     public string $siteId = '';
 
-    public string $socialAccountId = '';
+    public array $selectedAccountIds = [];
 
     public string $type = '';
 
@@ -42,7 +42,7 @@ class Index extends Component
 
     public function render()
     {
-        $posts = Post::with(['site', 'socialAccount'])->orderByDesc('created_at')->get();
+        $posts = Post::with(['site', 'socialAccounts'])->orderByDesc('created_at')->get();
 
         return view('livewire.posts.index', [
             'posts' => $posts,
@@ -111,10 +111,10 @@ class Index extends Component
 
     public function edit(int $id): void
     {
-        $post = Post::findOrFail($id);
+        $post = Post::with('socialAccounts')->findOrFail($id);
         $this->editingId = $post->id;
         $this->siteId = (string) $post->site_id;
-        $this->socialAccountId = $post->social_account_id ? (string) $post->social_account_id : '';
+        $this->selectedAccountIds = $post->socialAccounts->pluck('id')->map(fn ($id) => (string) $id)->toArray();
         $this->type = $post->type;
         $this->title = (string) $post->title;
         $this->body = $post->body;
@@ -129,7 +129,8 @@ class Index extends Component
     {
         $validated = $this->validate([
             'siteId' => ['required', 'integer', 'exists:sites,id'],
-            'socialAccountId' => ['nullable', 'integer', 'exists:social_accounts,id'],
+            'selectedAccountIds' => ['array'],
+            'selectedAccountIds.*' => ['integer', 'exists:social_accounts,id'],
             'type' => ['required', 'string', 'in:' . implode(',', Post::TYPES)],
             'title' => ['nullable', 'string', 'max:255'],
             'body' => ['required', 'string'],
@@ -139,9 +140,8 @@ class Index extends Component
             'scheduledAt' => ['nullable', 'date'],
         ]);
 
-        Post::updateOrCreate(['id' => $this->editingId], [
+        $post = Post::updateOrCreate(['id' => $this->editingId], [
             'site_id' => $validated['siteId'],
-            'social_account_id' => $validated['socialAccountId'] ?: null,
             'type' => $validated['type'],
             'title' => $validated['title'] ?: null,
             'body' => $validated['body'],
@@ -151,6 +151,13 @@ class Index extends Component
             'scheduled_at' => $validated['scheduledAt'] ?: null,
         ]);
 
+        // Sync social accounts using pivot table
+        if ($this->editingId) {
+            $post->socialAccounts()->sync($validated['selectedAccountIds'] ?: []);
+        } else {
+            $post->socialAccounts()->attach($validated['selectedAccountIds'] ?: []);
+        }
+
         $this->resetForm();
         $this->showForm = false;
     }
@@ -165,7 +172,7 @@ class Index extends Component
         $this->editingId = null;
         $this->templateId = null;
         $this->siteId = '';
-        $this->socialAccountId = '';
+        $this->selectedAccountIds = [];
         $this->type = '';
         $this->title = '';
         $this->body = '';

app/Models/Post.php

@@ -5,6 +5,7 @@ namespace App\Models;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
 
 class Post extends Model
 {
@@ -19,7 +20,6 @@ class Post extends Model
 
     protected $fillable = [
         'site_id',
-        'social_account_id',
         'type',
         'title',
         'body',
@@ -40,8 +40,8 @@ class Post extends Model
         return $this->belongsTo(Site::class);
     }
 
-    public function socialAccount(): BelongsTo
+    public function socialAccounts(): BelongsToMany
     {
-        return $this->belongsTo(SocialAccount::class);
+        return $this->belongsToMany(SocialAccount::class, 'post_social_account');
     }
 }

app/Support/Publishing/LinkedInPublisher.php

@@ -13,13 +13,14 @@ class LinkedInPublisher implements Publisher
         return $post->type === 'linkedin';
     }
 
-    public function publish(Post $post): PublishResult
+    public function publish(Post $post, ?SocialAccount $socialAccount = null): PublishResult
     {
         if (! $post->body) {
             return PublishResult::rejected("Post {$post->id} has no body, required for a LinkedIn post.");
         }
 
-        $account = $post->socialAccount;
+        // Use the passed social account, or fall back to the first linked one
+        $account = $socialAccount ?: $post->socialAccounts->first();
 
         if (! $account || $account->network !== 'linkedin') {
             return PublishResult::rejected("Post {$post->id} has no linked LinkedIn social account.");

app/Support/Publishing/Publisher.php

@@ -3,6 +3,7 @@
 namespace App\Support\Publishing;
 
 use App\Models\Post;
+use App\Models\SocialAccount;
 
 interface Publisher
 {
@@ -12,5 +13,5 @@ interface Publisher
      */
     public function supports(Post $post): bool;
 
-    public function publish(Post $post): PublishResult;
+    public function publish(Post $post, ?SocialAccount $socialAccount = null): PublishResult;
 }

app/Support/Publishing/RedditPublisher.php

@@ -13,7 +13,7 @@ class RedditPublisher implements Publisher
         return $post->type === 'reddit';
     }
 
-    public function publish(Post $post): PublishResult
+    public function publish(Post $post, ?SocialAccount $socialAccount = null): PublishResult
     {
         if (! $post->title) {
             return PublishResult::rejected("Post {$post->id} has no title, required for a Reddit post.");
@@ -23,7 +23,8 @@ class RedditPublisher implements Publisher
             return PublishResult::rejected("Post {$post->id} has no target subreddit set.");
         }
 
-        $account = $post->socialAccount;
+        // Use the passed social account, or fall back to the first linked one
+        $account = $socialAccount ?: $post->socialAccounts->first();
 
         if (! $account || $account->network !== 'reddit') {
             return PublishResult::rejected("Post {$post->id} has no linked Reddit social account.");

app/Support/Publishing/TwitterPublisher.php

@@ -13,13 +13,14 @@ class TwitterPublisher implements Publisher
         return $post->type === 'twitter';
     }
 
-    public function publish(Post $post): PublishResult
+    public function publish(Post $post, ?SocialAccount $socialAccount = null): PublishResult
     {
         if (! $post->body) {
             return PublishResult::rejected("Post {$post->id} has no body, required for a Twitter post.");
         }
 
-        $account = $post->socialAccount;
+        // Use the passed social account, or fall back to the first linked one
+        $account = $socialAccount ?: $post->socialAccounts->first();
 
         if (! $account || $account->network !== 'twitter') {
             return PublishResult::rejected("Post {$post->id} has no linked Twitter social account.");

app/Support/Publishing/WordPressPublisher.php

@@ -14,7 +14,7 @@ class WordPressPublisher implements Publisher
         return $post->type === 'blog';
     }
 
-    public function publish(Post $post): PublishResult
+    public function publish(Post $post, ?SocialAccount $socialAccount = null): PublishResult
     {
         if (! $post->title) {
             return PublishResult::rejected("Post {$post->id} has no title, required to publish to WordPress.");

database/migrations/2026_07_27_000001_create_post_social_account_table.php

@@ -0,0 +1,25 @@
+<?php
+
+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('post_social_account', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('post_id')->constrained()->cascadeOnDelete();
+            $table->foreignId('social_account_id')->constrained()->cascadeOnDelete();
+            $table->timestamps();
+            
+            $table->unique(['post_id', 'social_account_id']);
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('post_social_account');
+    }
+};

database/migrations/2026_07_27_000002_migrate_social_account_to_pivot.php

@@ -0,0 +1,33 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        // Copy existing social_account_id values to pivot table
+        DB::table('posts')
+            ->whereNotNull('social_account_id')
+            ->orderBy('id')
+            ->chunk(100, function ($posts) {
+                $now = now();
+                foreach ($posts as $post) {
+                    DB::table('post_social_account')->insert([
+                        'post_id' => $post->id,
+                        'social_account_id' => $post->social_account_id,
+                        'created_at' => $now,
+                        'updated_at' => $now,
+                    ]);
+                }
+            });
+    }
+
+    public function down(): void
+    {
+        // On rollback, we can't easily restore the social_account_id column
+        // since we'll remove it in the next migration. This is fine for a fresh setup.
+    }
+};

database/migrations/2026_07_27_000003_remove_social_account_id_from_posts.php

@@ -0,0 +1,26 @@
+<?php
+
+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::table('posts', function (Blueprint $table) {
+            $table->dropForeign(['social_account_id']);
+            $table->dropColumn('social_account_id');
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('posts', function (Blueprint $table) {
+            $table->foreignId('social_account_id')
+                ->nullable()
+                ->constrained('social_accounts')
+                ->nullOnDelete();
+        });
+    }
+};

resources/views/livewire/posts/index.blade.php

@@ -45,7 +45,17 @@
                         @endif
                     </td>
                     <td class="p-3">{{ $post->scheduled_at?->format('Y-m-d H:i') ?? '—' }}</td>
-                    <td class="p-3">{{ $post->socialAccount?->username ?? '—' }}</td>
+                    <td class="p-3">
+                        @if ($post->socialAccounts->count() > 0)
+                            <span class="flex flex-wrap gap-1">
+                                @foreach ($post->socialAccounts as $account)
+                                    <span class="text-xs bg-blue-100 text-blue-800 px-2 py-0.5 rounded">{{ $account->username }}</span>
+                                @endforeach
+                            </span>
+                        @else
+                            <span class="text-gray-400">—</span>
+                        @endif
+                    </td>
                     <td class="p-3 text-right space-x-2">
                         @if (in_array($post->type, ['blog', 'reddit', 'twitter', 'linkedin']) && in_array($post->status, ['draft', 'scheduled', 'failed']))
                             <button wire:click="publish({{ $post->id }})" class="text-green-700">Publish</button>
@@ -90,14 +100,21 @@
                 </div>
 
                 <div>
-                    <label class="block text-sm font-medium">Social Account (optional)</label>
-                    <select wire:model="socialAccountId" class="w-full border rounded p-2">
-                        <option value="">None</option>
+                    <label class="block text-sm font-medium">Social Accounts (optional - select multiple for cross-posting)</label>
+                    <div class="border border-gray-200 rounded p-2 max-h-32 overflow-y-auto bg-gray-50">
                         @foreach ($accounts as $account)
-                            <option value="{{ $account->id }}">{{ $account->username }} ({{ ucfirst($account->network) }})</option>
+                            <label class="flex items-center gap-2 p-1 hover:bg-white rounded cursor-pointer">
+                                <input 
+                                    type="checkbox" 
+                                    wire:model="selectedAccountIds"
+                                    value="{{ $account->id }}"
+                                    class="h-4 w-4 rounded"
+                                >
+                                <span class="text-sm">{{ $account->username }} ({{ ucfirst($account->network) }})</span>
+                            </label>
                         @endforeach
-                    </select>
-                    @error('socialAccountId') <span class="text-red-600 text-sm">{{ $message }}</span> @enderror
+                    </div>
+                    @error('selectedAccountIds') <span class="text-red-600 text-sm">{{ $message }}</span> @enderror
                 </div>
 
                 <div>