<?php

declare(strict_types=1);

namespace Modules\Helpdesk\Livewire;

use App\Models\User;
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 $archiveModalOpen = false;

    public ?int $pendingArchiveTicketId = null;

    public ?string $pendingArchiveTicketReference = null;

    public ?string $pendingArchiveTicketSubject = 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 archive confirmation modal for a visible ticket.
     */
    public function askToArchiveTicket(int $ticketId): void
    {
        $ticket = Ticket::query()
            ->visibleTo(Auth::user())
            ->findOrFail($ticketId);

        $this->pendingArchiveTicketId = $ticket->id;
        $this->pendingArchiveTicketReference = $ticket->reference;
        $this->pendingArchiveTicketSubject = $ticket->subject;
        $this->archiveModalOpen = true;
    }

    public function cancelTicketArchive(): void
    {
        $this->resetTicketArchiveState();
    }

    /**
     * Archive the confirmed ticket using Laravel soft deletes.
     */
    public function confirmTicketArchive(): void
    {
        if ($this->pendingArchiveTicketId === null) {
            $this->resetTicketArchiveState();

            return;
        }

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

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

        $reference = $ticket->reference;

        $ticket->forceFill(['archived_at' => now()])->save();
        $ticket->delete();

        $this->resetTicketArchiveState();
        $this->resetPage();

        $this->dispatch(
            'thredary:toast',
            type: 'success',
            title: 'Ticket archived',
            message: "Ticket {$reference} was moved to the archive.",
        );
    }

    public function render(): View
    {
        return view('modules.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 resetTicketArchiveState(): void
    {
        $this->archiveModalOpen = false;
        $this->pendingArchiveTicketId = null;
        $this->pendingArchiveTicketReference = null;
        $this->pendingArchiveTicketSubject = null;
    }

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

        return Ticket::query()
            ->without('user')
            ->select('helpdesk_tickets.*')
            ->addSelect([
                'agent_name' => User::query()
                    ->select('name')
                    ->whereColumn('users.id', 'helpdesk_tickets.agent_id')
                    ->limit(1),
            ])
            ->with(['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);
    }
}