<?php

declare(strict_types=1);

namespace Modules\Helpdesk\Livewire;

use Illuminate\Contracts\View\View;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Pagination\LengthAwarePaginator;
use Illuminate\Support\Facades\Auth;
use Livewire\Attributes\Url;
use Livewire\Component;
use Livewire\WithPagination;
use Modules\Helpdesk\Models\Priority;
use Modules\Helpdesk\Models\Status;
use Modules\Helpdesk\Models\Ticket;

final class TicketIndex extends Component
{
    use WithPagination;


    public bool $confirmingTicketDeletion = false;

    public ?int $ticketDeletionId = null;

    public ?string $ticketDeletionReference = null;

    #[Url]
    public string $search = '';

    #[Url]
    public string $status = '';

    #[Url]
    public string $priority = '';

    #[Url]
    public string $scope = 'open';

    /**
     * Reset pagination when filters change.
     */
    public function updated(): void
    {
        $this->resetPage();
    }

    /**
     * Render the ticket list.
     */
    public function render(): View
    {
        return view('helpdesk::livewire.ticket-index', [
            'tickets' => $this->tickets(),
            'statuses' => Status::query()->orderBy('sort_order')->get(),
            'priorities' => Priority::query()->orderBy('sort_order')->get(),
        ])->layout('layouts.app');
    }

    /**
     * Build paginated ticket results.
     *
     * @return LengthAwarePaginator<int, Ticket>
     */
    private function tickets(): LengthAwarePaginator
    {
        $user = Auth::user();
        $search = trim($this->search);

        return Ticket::query()
            ->with(['owner', 'agent', 'status', 'priority', 'category', 'project', 'team'])
            ->withCount('attachments')
            ->visibleTo($user)
            ->when($this->scope === 'open', static fn (Builder $query): Builder => $query->whereNull('completed_at'))
            ->when($this->scope === 'closed', static fn (Builder $query): Builder => $query->whereNotNull('completed_at'))
            ->when($this->status !== '', fn (Builder $query): Builder => $query->where('status_id', (int) $this->status))
            ->when($this->priority !== '', fn (Builder $query): Builder => $query->where('priority_id', (int) $this->priority))
            ->when($search !== '', static function (Builder $query) use ($search): Builder {
                return $query->where(static function (Builder $subQuery) use ($search): void {
                    $subQuery->where('reference', 'like', '%'.$search.'%')
                        ->orWhere('subject', 'like', '%'.$search.'%')
                        ->orWhere('body', 'like', '%'.$search.'%');
                });
            })
            ->latest('last_activity_at')
            ->paginate(15);
    }

    /**

     * Open the delete confirmation modal for a ticket.

     */

    public function confirmDeleteTicket(int $ticketId): void

    {

        $ticket = Ticket::query()->findOrFail($ticketId);

        $this->authorize('delete', $ticket);

        $this->ticketDeletionId = $ticket->id;

        $this->ticketDeletionReference = $ticket->reference;

        $this->confirmingTicketDeletion = true;

    }

    /**

     * Close the delete confirmation modal.

     */

    public function cancelDeleteTicket(): void

    {

        $this->resetTicketDeletionState();

    }

    /**

     * Delete the confirmed ticket.

     */

    public function deleteConfirmedTicket(): void

    {

        if ($this->ticketDeletionId === null) {

            $this->resetTicketDeletionState();

            return;

        }

        $ticket = Ticket::query()->findOrFail($this->ticketDeletionId);

        $this->authorize('delete', $ticket);

        $reference = $ticket->reference;

        $ticket->delete();

        $this->resetTicketDeletionState();

        $this->resetPage();

        $this->dispatch('wms:toast', [

            'type' => 'success',

            'title' => 'Ticket deleted',

            'message' => "Ticket {$reference} was deleted successfully.",

        ]);

    }

    /**

     * Reset ticket deletion modal state.

     */

    private function resetTicketDeletionState(): void

    {

        $this->confirmingTicketDeletion = false;

        $this->ticketDeletionId = null;

        $this->ticketDeletionReference = null;

    }
}