<?php

namespace App\Http\Livewire\Chat;

use App\Models\ChatConversation;
use App\Models\ChatMessage;
use App\Services\ChatBotEngine;
use Livewire\Component;

class ShowConversaciones extends Component
{
    public string $busqueda     = '';
    public string $filtroEstado = '';
    public ?int   $convSelecId  = null;
    public string $replyText    = '';
    public array  $mensajes     = [];

    public function selectConv(int $convId): void
    {
        $this->convSelecId = $convId;
        $this->replyText   = '';
        $this->cargarMensajes();

        // Marcar mensajes entrantes como leídos
        ChatMessage::where('conversation_id', $convId)
            ->where('tipo', 'usuario')
            ->where('leido', false)
            ->update(['leido' => true]);

        ChatConversation::where('id', $convId)
            ->update(['mensajes_no_leidos' => 0]);
    }

    public function cargarMensajes(): void
    {
        if (! $this->convSelecId) {
            $this->mensajes = [];
            return;
        }

        $this->mensajes = ChatMessage::where('conversation_id', $this->convSelecId)
            ->orderBy('id')
            ->get()
            ->map(fn($m) => [
                'id'         => $m->id,
                'tipo'       => $m->tipo,
                'contenido'  => $m->contenido,
                'created_at' => $m->created_at->format('d/m H:i'),
            ])
            ->toArray();

        $this->dispatchBrowserEvent('scroll-admin');
    }

    public function sendReply(): void
    {
        $this->validate(['replyText' => 'required|string|max:4096']);

        if (! $this->convSelecId) {
            return;
        }

        $conv = ChatConversation::with('contact')->find($this->convSelecId);
        if (! $conv) {
            return;
        }

        ChatMessage::create([
            'conversation_id' => $this->convSelecId,
            'tipo'            => 'agente',
            'contenido'       => $this->replyText,
            'leido'           => true,
        ]);

        $conv->update(['ultimo_mensaje_at' => now()]);

        // Enviar via Telegram si el canal es telegram
        if ($conv->canal === 'telegram') {
            $engine = new ChatBotEngine();
            $engine->enviarTelegram($conv->contact->canal_id, $this->replyText);
        }

        $this->replyText = '';
        $this->cargarMensajes();
    }

    public function cerrarConv(): void
    {
        if (! $this->convSelecId) {
            return;
        }

        ChatConversation::where('id', $this->convSelecId)
            ->update(['estado' => 'cerrada']);

        $this->cargarMensajes();
    }

    public function devolverAlBot(): void
    {
        if (! $this->convSelecId) {
            return;
        }

        ChatConversation::where('id', $this->convSelecId)
            ->update(['estado' => 'bot', 'menu_actual_id' => null]);
    }

    public function tomarControl(): void
    {
        if (! $this->convSelecId) {
            return;
        }

        ChatConversation::where('id', $this->convSelecId)
            ->update(['estado' => 'agente']);
    }

    public function render()
    {
        $conversaciones = ChatConversation::with('contact')
            ->when($this->filtroEstado, fn($q) => $q->where('estado', $this->filtroEstado))
            ->when($this->busqueda, function ($q) {
                $q->whereHas('contact', function ($s) {
                    $s->where('nombre', 'like', "%{$this->busqueda}%")
                      ->orWhere('telefono', 'like', "%{$this->busqueda}%")
                      ->orWhere('canal_id', 'like', "%{$this->busqueda}%");
                });
            })
            ->orderByDesc('ultimo_mensaje_at')
            ->get();

        $convSelec = $this->convSelecId
            ? ChatConversation::with('contact')->find($this->convSelecId)
            : null;

        return view('livewire.chat.show-conversaciones', compact('conversaciones', 'convSelec'));
    }
}