<?php

namespace App\Http\Controllers\Pos;

use App\Http\Controllers\Controller;
use App\Http\Controllers\Pos\Concerns\ScopesToAccount;
use App\Models\PosProduct;
use App\Models\PosSale;
use App\Services\Afia\AfiaService;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;

class AiController extends Controller
{
    use ScopesToAccount;

    public function chat(Request $request, AfiaService $afia): JsonResponse
    {
        $validated = $request->validate([
            'message' => ['required', 'string', 'max:2000'],
            'history' => ['nullable', 'array', 'max:20'],
            'history.*.role' => ['nullable', 'string'],
            'history.*.text' => ['nullable', 'string'],
        ]);

        if (! $afia->enabled()) {
            return response()->json(['message' => 'Afia is not available right now.'], 503);
        }

        try {
            $reply = $afia->chat(trim($validated['message']), $validated['history'] ?? [], $this->context($request));
        } catch (\Throwable $e) {
            report($e);

            return response()->json(['message' => 'Afia could not respond right now. Please try again.'], 502);
        }

        return response()->json(['reply' => $reply]);
    }

    /** @return array<string,mixed> */
    private function context(Request $request): array
    {
        $owner = $this->ownerRef($request);
        $currency = strtoupper((string) config('pos.default_currency', 'GHS'));

        $todaySales = PosSale::owned($owner)
            ->where('status', PosSale::STATUS_PAID)
            ->where('paid_at', '>=', now()->startOfDay());

        $todayTotalMinor = (int) (clone $todaySales)->sum('total_minor');

        return [
            'signed_in' => 'yes',
            'today_takings' => $currency.' '.number_format($todayTotalMinor / 100, 2),
            'today_sales_count' => (clone $todaySales)->count(),
            'active_products' => PosProduct::owned($owner)->active()->count(),
            'pending_sales' => PosSale::owned($owner)->where('status', PosSale::STATUS_PENDING)->count(),
        ];
    }
}