<?php

namespace App\Http\Controllers\User;

use App\Http\Controllers\Controller;
use App\Models\ProjectCollaborator;
use App\Models\TranscriptionProject;
use App\Models\User;
use App\Services\AuditLogService;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;

class CollaboratorController extends Controller
{
    public function store(Request $request, TranscriptionProject $project, AuditLogService $audit): RedirectResponse
    {
        $this->authorize('manageCollaborators', $project);

        $data = $request->validate([
            'email' => ['required', 'email', 'exists:users,email'],
            'role'  => ['nullable', 'in:editor,viewer'],
        ]);

        $user = User::where('email', $data['email'])->where('is_active', true)->firstOrFail();

        // Owner tidak boleh jadi collaborator
        if ($project->isOwnedBy($user)) {
            return back()->withErrors(['email' => 'Pengguna ini adalah pemilik projek.']);
        }

        // Elak duplicate
        $existing = ProjectCollaborator::where('project_id', $project->id)
            ->where('user_id', $user->id)
            ->exists();

        if ($existing) {
            return back()->withErrors(['email' => 'Pengguna ini sudah menjadi collaborator.']);
        }

        ProjectCollaborator::create([
            'project_id' => $project->id,
            'user_id'    => $user->id,
            'role'       => $data['role'] ?? 'editor',
            'added_by'   => auth()->id(),
        ]);

        $audit->log('collaborator_added', [
            'project_id'     => $project->id,
            'target_user_id' => $user->id,
            'new_values'     => ['email' => $user->email, 'role' => $data['role'] ?? 'editor'],
        ]);

        return back()->with('success', "{$user->name} berjaya ditambah sebagai collaborator.");
    }

    public function destroy(TranscriptionProject $project, User $user, AuditLogService $audit): RedirectResponse
    {
        $this->authorize('manageCollaborators', $project);

        ProjectCollaborator::where('project_id', $project->id)
            ->where('user_id', $user->id)
            ->delete();

        $audit->log('collaborator_removed', [
            'project_id'     => $project->id,
            'target_user_id' => $user->id,
            'old_values'     => ['email' => $user->email],
        ]);

        return back()->with('success', "{$user->name} telah dibuang daripada collaborator.");
    }
}