<?php

namespace Modules\Core\Cart\Commands;

use Illuminate\Console\Command;
use Illuminate\Support\Facades\Event;
use Lunar\Models\Cart;
use Modules\Core\Cart\Filament\Resources\CartResource;
use Modules\Core\Recovery\Events\CartAbandoned;
use Modules\Core\Recovery\Events\CheckoutAbandoned;

/**
 * "Abandoned" is a derived state (Cart::updated_at older than
 * config('core.cart.abandoned_after')) — nothing transitions a cart into it
 * via a normal Eloquent write, so there's no model-event hook to dispatch
 * CartAbandoned/CheckoutAbandoned from directly. This command is the only
 * place that moment gets detected; run it on a schedule (see docs/cart.md).
 *
 * Splits Cart::scopeActive()'s two branches into their own events —
 * see CartAbandoned/CheckoutAbandoned's docblocks for why they're distinct,
 * not one combined "abandoned" state: a cart with no order at all is a much
 * weaker purchase-intent signal than one with a draft order that was never
 * placed.
 *
 * Deliberately does NOT write anything to Cart/Order — dispatch only. An
 * earlier version recorded an "already notified" marker on Cart::meta/
 * Order::meta, but that write bumped updated_at as an Eloquent side effect,
 * which un-staled the very cart being marked abandoned (the same field
 * abandonment staleness is computed from) — see docs/cart.md's former
 * "Known bug" note. Cart/Checkout must have no way of writing abandonment
 * state at all; every cart still matching the query below refires its event
 * on every run until Recovery (not yet built — see
 * docs/recovery-strategies.md) owns its own dedup/tracking table.
 */
class DetectAbandonedCarts extends Command
{
    protected $signature = 'boboko:cart:detect-abandoned';

    protected $description = 'Dispatch CartAbandoned/CheckoutAbandoned for carts that just crossed the abandonment threshold.';

    public function handle(): void
    {
        $cutoff = CartResource::abandonedCutoff();

        $cartsAbandoned = 0;
        $checkoutsAbandoned = 0;

        Cart::query()
            ->whereDoesntHave('orders')
            ->where('updated_at', '<=', $cutoff)
            ->with('lines')
            ->chunkById(200, function ($carts) use (&$cartsAbandoned) {
                foreach ($carts as $cart) {
                    if ($cart->lines->isEmpty()) {
                        continue;
                    }

                    Event::dispatch(new CartAbandoned($cart));

                    $cartsAbandoned++;
                }
            });

        Cart::query()
            ->whereHas('orders', fn ($query) => $query->whereNull('placed_at'))
            ->where('updated_at', '<=', $cutoff)
            ->with(['orders' => fn ($query) => $query->whereNull('placed_at')])
            ->chunkById(200, function ($carts) use (&$checkoutsAbandoned) {
                foreach ($carts as $cart) {
                    $order = $cart->orders->first();

                    if ($order === null) {
                        continue;
                    }

                    Event::dispatch(new CheckoutAbandoned($cart, $order));

                    $checkoutsAbandoned++;
                }
            });

        $this->components->info("Dispatched CartAbandoned for {$cartsAbandoned} cart(s), CheckoutAbandoned for {$checkoutsAbandoned} checkout(s).");
    }
}