<?php

namespace App\Http\Controllers\Web;

use App\Http\Controllers\Controller;
use App\Models\Character;
use App\Models\CharacterMessage;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;

/**
 * Persistent chat between world characters.
 */
class CharacterChatController extends Controller
{
    /**
     * List messages exchanged with another character (newest last).
     */
    public function index(Request $request, Character $character): JsonResponse
    {
        $me = Character::ensureForUser($request->user());

        $messages = CharacterMessage::query()
            ->where(function ($q) use ($me, $character): void {
                $q->where('from_character_id', $me->id)->where('to_character_id', $character->id);
            })
            ->orWhere(function ($q) use ($me, $character): void {
                $q->where('from_character_id', $character->id)->where('to_character_id', $me->id);
            })
            ->orderBy('id')
            ->limit(100)
            ->get()
            ->map(fn (CharacterMessage $m) => [
                'from' => (int) $m->from_character_id,
                'body' => $m->body,
                'at' => $m->created_at?->toIso8601String(),
            ]);

        return response()->json([
            'me' => $me->id,
            'them' => $character->id,
            'messages' => $messages,
        ]);
    }

    /**
     * Send a chat message to another character.
     */
    public function send(Request $request, Character $character): JsonResponse
    {
        $me = Character::ensureForUser($request->user());

        if ((int) $character->id === (int) $me->id) {
            return response()->json(['message' => __('city.social_self')], 422);
        }

        $data = $request->validate([
            'body' => ['required', 'string', 'max:1000'],
        ]);

        $message = CharacterMessage::create([
            'from_character_id' => $me->id,
            'to_character_id' => $character->id,
            'body' => $data['body'],
        ]);

        return response()->json([
            'message' => __('city.chat_sent'),
            'id' => $message->id,
        ]);
    }
}