<?php

namespace App\Livewire\Requests;

use App\Models\RequestComment;
use App\Models\ServiceRequest;
use App\Models\Status;
use App\Services\NotificationService;
use App\Services\RequestService;
use Illuminate\Support\Facades\Gate;
use Livewire\Attributes\Layout;
use Livewire\Component;

#[Layout('layouts.app')]
class RequestShowPage extends Component
{
    public ServiceRequest $request;

    public string $commentBody = '';

    public bool $commentInternal = false;

    public string $nextStatusId = '';

    public ?int $rating = null;

    public string $ratingComment = '';

    public function mount(ServiceRequest $request): void
    {
        Gate::authorize('view', $request);
        $this->request = $request->load([
            'type',
            'priority',
            'status',
            'client',
            'assignee',
            'equipment.category',
            'comments.user',
            'attachments.user',
        ]);
    }

    public function addComment(NotificationService $notificationService): void
    {
        Gate::authorize('update', $this->request);

        $data = $this->validate([
            'commentBody' => ['required', 'string', 'max:5000'],
            'commentInternal' => ['nullable', 'boolean'],
        ]);

        if (($data['commentInternal'] ?? false) && !auth()->user()->isStaff()) {
            abort(403);
        }

        $comment = $this->request->comments()->create([
            'user_id' => auth()->id(),
            'body' => $data['commentBody'],
            'is_internal' => (bool) ($data['commentInternal'] ?? false),
        ]);

        $this->commentBody = '';
        $this->commentInternal = false;

        $notificationService->notifyCommentAdded($this->request->fresh(['assignee', 'client']), auth()->user());

        session()->flash('success', 'Комментарий добавлен.');

        $this->request->refresh();
    }

    public function deleteComment(int $commentId): void
    {
        $comment = RequestComment::query()->findOrFail($commentId);

        abort_unless($comment->user_id === auth()->id(), 403);

        $comment->delete();
        session()->flash('success', 'Комментарий удален.');
        $this->request->refresh();
    }

    public function changeStatus(RequestService $requestService): void
    {
        Gate::authorize('update', $this->request);

        if ($this->nextStatusId === '') {
            return;
        }

        $target = Status::query()->findOrFail($this->nextStatusId);

        $allowed = $requestService->allowedTransitions($this->request->fresh('status'), auth()->user());

        if (!in_array($target->slug, $allowed, true)) {
            abort(422, 'Переход статуса недоступен.');
        }

        $requestService->changeStatus($this->request, $target, auth()->user());

        $this->nextStatusId = '';
        session()->flash('success', 'Статус обновлен.');
        $this->request->refresh();
    }

    public function submitRating(): void
    {
        Gate::authorize('rate', $this->request);

        $data = $this->validate([
            'rating' => ['required', 'integer', 'between:1,5'],
            'ratingComment' => ['nullable', 'string', 'max:2000'],
        ]);

        $this->request->update([
            'client_rating' => $data['rating'],
            'client_comment' => $data['ratingComment'] ?? null,
        ]);

        session()->flash('success', 'Спасибо за оценку заявки.');
        $this->request->refresh();
    }

    private function allowedStatuses()
    {
        $requestService = app(RequestService::class);

        $slugs = $requestService->allowedTransitions($this->request->fresh('status'), auth()->user());

        return Status::query()->whereIn('slug', $slugs)->orderBy('sort_order')->get();
    }

    public function render()
    {
        $isClient = auth()->user()->isClient();

        $comments = $this->request->comments()
            ->with('user')
            ->when($isClient, fn ($q) => $q->where('is_internal', false))
            ->latest()
            ->get();

        return view('livewire.requests.request-show-page', [
            'allowedStatuses' => $this->allowedStatuses(),
            'comments' => $comments,
            'activity' => $this->request->id
                ? \App\Models\ActivityLog::query()
                    ->where('model_type', ServiceRequest::class)
                    ->where('model_id', $this->request->id)
                    ->with('user')
                    ->latest('created_at')
                    ->limit(20)
                    ->get()
                : collect(),
        ])->title("Заявка {$this->request->ticket_number}");
    }
}