<?php

namespace App\Livewire\Requests;

use App\Exports\CsvExport;
use App\Models\Priority;
use App\Models\RequestType;
use App\Models\ServiceRequest;
use App\Models\Status;
use App\Models\User;
use App\Services\ActivityLogService;
use Illuminate\Database\Eloquent\Builder;
use Livewire\Attributes\Layout;
use Livewire\Component;
use Livewire\WithPagination;

#[Layout('layouts.app')]
class RequestIndexPage extends Component
{
    use WithPagination;

    public string $search = '';

    public string $statusId = '';

    public string $priorityId = '';

    public string $typeId = '';

    public string $technicianId = '';

    public string $dateFrom = '';

    public string $dateTo = '';

    public string $sortField = 'created_at';

    public string $sortDirection = 'desc';

    public int $perPage = 15;

    public array $selected = [];

    public string $bulkAssignee = '';

    public string $bulkStatus = '';

    public function mount(): void
    {
        abort_unless(auth()->user()->isAdmin() || auth()->user()->isManager(), 403);
    }

    public function updatingSearch(): void
    {
        $this->resetPage();
    }

    public function sortBy(string $field): void
    {
        if ($this->sortField === $field) {
            $this->sortDirection = $this->sortDirection === 'asc' ? 'desc' : 'asc';

            return;
        }

        $this->sortField = $field;
        $this->sortDirection = 'asc';
    }

    public function clearFilters(): void
    {
        $this->reset(['search', 'statusId', 'priorityId', 'typeId', 'technicianId', 'dateFrom', 'dateTo']);
        $this->resetPage();
    }

    public function bulkAssign(ActivityLogService $activityLogService): void
    {
        if (!$this->bulkAssignee || empty($this->selected)) {
            return;
        }

        ServiceRequest::query()
            ->whereIn('id', $this->selected)
            ->update(['assigned_to' => $this->bulkAssignee]);

        $activityLogService->log(auth()->user(), ServiceRequest::class, 0, 'bulk_assign', 'Массовое назначение заявок', request()->ip());

        $this->selected = [];
        session()->flash('success', 'Исполнитель назначен выбранным заявкам.');
    }

    public function bulkChangeStatus(ActivityLogService $activityLogService): void
    {
        if (!$this->bulkStatus || empty($this->selected)) {
            return;
        }

        ServiceRequest::query()
            ->whereIn('id', $this->selected)
            ->update(['status_id' => $this->bulkStatus]);

        $activityLogService->log(auth()->user(), ServiceRequest::class, 0, 'bulk_status_change', 'Массовая смена статуса заявок', request()->ip());

        $this->selected = [];
        session()->flash('success', 'Статус обновлен для выбранных заявок.');
    }

    public function exportCsv()
    {
        $rows = $this->query()->get()->map(function (ServiceRequest $request) {
            return [
                $request->ticket_number,
                $request->title,
                $request->client?->name,
                $request->assignee?->name,
                $request->priority?->name,
                $request->status?->name,
                $request->deadline_at?->format('d.m.Y H:i'),
                $request->created_at?->format('d.m.Y H:i'),
            ];
        })->toArray();

        return CsvExport::download(
            'requests.csv',
            ['Ticket', 'Заголовок', 'Клиент', 'Исполнитель', 'Приоритет', 'Статус', 'Дедлайн', 'Создана'],
            $rows
        );
    }

    private function query(): Builder
    {
        return ServiceRequest::query()
            ->with(['client', 'assignee', 'priority', 'status', 'type'])
            ->when($this->search !== '', function (Builder $query): void {
                $query->where(function (Builder $q): void {
                    $q->where('title', 'like', "%{$this->search}%")
                        ->orWhere('ticket_number', 'like', "%{$this->search}%");
                });
            })
            ->when($this->statusId !== '', fn (Builder $q) => $q->where('status_id', $this->statusId))
            ->when($this->priorityId !== '', fn (Builder $q) => $q->where('priority_id', $this->priorityId))
            ->when($this->typeId !== '', fn (Builder $q) => $q->where('type_id', $this->typeId))
            ->when($this->technicianId !== '', fn (Builder $q) => $q->where('assigned_to', $this->technicianId))
            ->when($this->dateFrom !== '', fn (Builder $q) => $q->whereDate('created_at', '>=', $this->dateFrom))
            ->when($this->dateTo !== '', fn (Builder $q) => $q->whereDate('created_at', '<=', $this->dateTo))
            ->orderBy($this->sortField, $this->sortDirection);
    }

    public function render()
    {
        return view('livewire.requests.request-index-page', [
            'requests' => $this->query()->paginate($this->perPage),
            'statuses' => Status::query()->orderBy('sort_order')->get(),
            'priorities' => Priority::query()->orderBy('level')->get(),
            'types' => RequestType::query()->orderBy('name')->get(),
            'technicians' => User::query()->where('role', 'technician')->orderBy('name')->get(),
        ])->title('Заявки');
    }
}