<?php

declare(strict_types=1);

namespace Modules\Helpdesk\Livewire;

use Illuminate\Contracts\View\View;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Foundation\Auth\Access\AuthorizesRequests;
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 AuthorizesRequests;
    use WithPagination;

    public bool $deleteModalOpen = false;

    public ?int $pendingDeleteTicketId = null;

    public ?string $pendingDeleteTicketReference = null;

    public ?string $pendingDeleteTicketSubject = null;

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

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

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

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

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

    /**
     * Open the delete confirmation modal for a visible ticket.
     */
    public function askToDeleteTicket(int $ticketId): void
    {
        $ticket = Ticket::query()
            ->visibleTo(Auth::user())
            ->findOrFail($ticketId);

        $this->pendingDeleteTicketId = $ticket->id;
        $this->pendingDeleteTicketReference = $ticket->reference;
        $this->pendingDeleteTicketSubject = $ticket->subject;
        $this->deleteModalOpen = true;
    }

    public function cancelTicketDelete(): void
    {
        $this->resetTicketDeletionState();
    }

    /**
     * Delete the confirmed ticket.
     */
    public function confirmTicketDelete(): void
    {
        if ($this->pendingDeleteTicketId === null) {
            $this->resetTicketDeletionState();

            return;
        }

        $ticket = Ticket::query()
            ->visibleTo(Auth::user())
            ->findOrFail($this->pendingDeleteTicketId);

        $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.",
        );
    }

    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');
    }

    private function resetTicketDeletionState(): void
    {
        $this->deleteModalOpen = false;
        $this->pendingDeleteTicketId = null;
        $this->pendingDeleteTicketReference = null;
        $this->pendingDeleteTicketSubject = null;
    }

    /**
     * @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);

    }
}