<?php

namespace Modules\DocumentManagement\Http\Controllers;

use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
use Modules\DocumentManagement\Models\Document;
use Illuminate\Support\Facades\Gate;

class DocumentApprovalController extends Controller
{
    /**
     * Approve or reject a document.
     */
    public function __invoke(Request $request, Document $document)
    {
        // Typically, we would use a Gate or Policy. 
        // For Contractor Admin, they should have a specific role or permission.
        // Assuming there is a policy checking user->hasRole('Contractor Admin') or similar.
        Gate::authorize('approve', $document);

        $validated = $request->validate([
            'status' => 'required|in:Approved,Rejected',
            'comments' => 'nullable|string|max:1000',
        ]);

        // Find the global approval chain if it exists
        $chain = \Modules\ApprovalWorkflow\Models\ApprovalChain::where('approvable_type', Document::class)
            ->where('approvable_id', $document->id)
            ->whereIn('status', ['pending', 'in_review'])
            ->first();

        if ($chain) {
            $service = app(\Modules\ApprovalWorkflow\Services\ApprovalService::class);
            if ($validated['status'] === 'Approved') {
                $service->approve($chain, $request->user(), $validated['comments']);
            } else {
                $service->reject($chain, $request->user(), $validated['comments']);
            }
        } else {
            // Fallback for older documents that didn't go through the ApprovalWorkflow
            $document->approvals()->create([
                'approved_by' => $request->user()->id,
                'status' => $validated['status'],
                'comments' => $validated['comments'] ?? null,
                'approved_at' => now(),
            ]);

            $document->update([
                'status' => $validated['status'],
            ]);
        }

        return back()->with('success', "Document has been {$validated['status']}.");
    }
}