muninn/app/Support/Publishing/LinkedInPublisher.php

<?php

namespace App\Support\Publishing;

use App\Models\Post;
use App\Models\SocialAccount;
use Illuminate\Support\Facades\Log;
use Illuminate\Support\Facades\Process;

class LinkedInPublisher implements Publisher
{
    public function supports(Post $post): bool
    {
        return $post->type === 'linkedin';
    }

    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.");
        }

        // 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.");
        }

        // LinkedIn uses email and password
        $result = Process::timeout(120)->run([
            base_path('sidecars/linkedin-post/run.sh'),
            "--email={$account->email}",
            "--password={$account->password}",
            "--post=" . escapeshellarg($post->body),
        ]);

        $data = json_decode(trim($result->output()), true);

        if (! is_array($data) || ! array_key_exists('success', $data)) {
            Log::error('linkedin sidecar returned unparseable output', [
                'post_id' => $post->id,
                'output' => $result->output(),
                'stderr' => $result->errorOutput(),
            ]);

            return PublishResult::failed('LinkedIn sidecar returned unparseable output — check logs.');
        }

        if (! $data['success']) {
            return PublishResult::failed($data['error'] ?? 'unknown LinkedIn sidecar failure');
        }

        return PublishResult::success($data['url']);
    }
}