<?php

namespace App\Services;

use App\Models\Department;
use App\Models\Feedback;
use App\Models\User;
use Illuminate\Support\Facades\App;
use Illuminate\Validation\ValidationException;
use Symfony\Component\HttpKernel\Exception\HttpException;

class ClosingService
{
    /**
     * Close a feedback. Throws if staff tries to close or no proof exists.
     */
    public function close(Feedback $feedback, User $actor): void
    {
        if ($feedback->status === 'closed') {
            throw ValidationException::withMessages([
                'status' => __('Phiếu này đã được đóng.'),
            ]);
        }

        if (! $actor->hasPermissionTo('close-ticket')) {
            throw new HttpException(403, __('Chỉ lãnh đạo cấp phòng mới có quyền đóng phiếu.'));
        }

        if ($actor->hasRole('manager') && ! $actor->hasRole('admin')) {
            $managedDeptIds = Department::where('manager_id', $actor->id)->pluck('id');
            if (! $managedDeptIds->contains($feedback->current_department_id)) {
                throw new HttpException(403, __('Bạn chỉ có thể đóng phiếu thuộc phòng ban mình quản lý.'));
            }
        }

        $fileService = App::make(FileService::class);

        if (! $fileService->hasCollection($feedback, 'proof_of_resolution')) {
            throw ValidationException::withMessages([
                'status' => __('Yêu cầu cung cấp tài liệu bằng chứng để hoàn tất quy trình.'),
            ]);
        }

        $feedback->update(['status' => 'closed']);

        $this->notifyStakeholders($feedback, $actor);
    }

    /**
     * Resolve a feedback. Any role can resolve.
     */
    public function resolve(Feedback $feedback, User $actor): void
    {
        if (in_array($feedback->status, ['closed', 'resolved'])) {
            throw ValidationException::withMessages([
                'status' => __('Phiếu này đã được xử lý hoặc đóng.'),
            ]);
        }

        $feedback->update(['status' => 'resolved']);
    }

    protected function notifyStakeholders(Feedback $feedback, User $actor): void
    {
        if ($feedback->assignedTo) {
            $feedback->assignedTo->notify(new \App\Notifications\TicketClosed($feedback, $actor));
        }

        $department = $feedback->currentDepartment;
        if ($department && $department->manager && $department->manager->id !== ($feedback->assignedTo?->id ?? null)) {
            $department->manager->notify(new \App\Notifications\TicketClosed($feedback, $actor));
        }
    }
}