<?php

namespace App\Services\Woo;

use App\Models\User;
use App\Models\WooStore;

class CatalogSyncService
{
    public function __construct(
        private PluginClient $client,
        private ProductIngestService $products,
        private CategoryIngestService $categories,
        private SubscriptionService $subscriptions,
    ) {}

    public function syncAll(WooStore $store, ?User $user = null): array
    {
        $this->syncStoreMeta($store);

        return [
            'categories' => $this->syncCategories($store),
            'products' => $this->syncProducts($store, $user),
        ];
    }

    /**
     * Pull store-level settings (currency, site name) from the WooCommerce plugin.
     */
    public function syncStoreMeta(WooStore $store): void
    {
        $response = $this->client->get($store, 'store');
        if (! is_array($response)) {
            return;
        }

        $this->applyStoreMeta($store, $response);
    }

    /** @param  array<string, mixed>  $payload */
    public function applyStoreMeta(WooStore $store, array $payload): void
    {
        $currency = strtoupper(trim((string) ($payload['currency'] ?? '')));
        if (preg_match('/^[A-Z]{3}$/', $currency) !== 1) {
            return;
        }

        $meta = is_array($store->metadata) ? $store->metadata : [];
        $meta['currency'] = $currency;

        $symbol = trim((string) ($payload['currency_symbol'] ?? ''));
        if ($symbol !== '') {
            $meta['currency_symbol'] = $symbol;
        }

        $siteName = trim((string) ($payload['site_name'] ?? ''));
        $updates = ['metadata' => $meta];
        if ($siteName !== '' && (string) $store->site_name !== $siteName) {
            $updates['site_name'] = $siteName;
        }

        $store->forceFill($updates)->save();
        $store->refresh();
    }

    public function syncCategories(WooStore $store): int
    {
        $response = $this->client->get($store, 'categories', ['per_page' => 100]);
        if (! is_array($response)) {
            return 0;
        }

        $items = $response['data'] ?? $response;
        if (! is_array($items)) {
            return 0;
        }

        $count = 0;
        foreach ($items as $item) {
            if (! is_array($item)) {
                continue;
            }
            $this->categories->ingest($store, $item);
            $count++;
        }

        return $count;
    }

    public function syncProducts(WooStore $store, ?User $user = null): int
    {
        $response = $this->client->get($store, 'products', ['per_page' => 100]);
        if (! is_array($response)) {
            return 0;
        }

        if (isset($response['currency']) || isset($response['currency_symbol'])) {
            $this->applyStoreMeta($store, $response);
        }

        $items = $response['data'] ?? $response;
        if (! is_array($items)) {
            return 0;
        }

        // Bare list responses are numeric arrays of products — ignore non-product keys.
        if (array_is_list($items) === false && isset($response['data']) === false) {
            $items = array_values(array_filter($items, fn ($item) => is_array($item) && isset($item['id'])));
        }

        $count = 0;
        foreach ($items as $item) {
            if (! is_array($item)) {
                continue;
            }

            $externalId = (int) ($item['id'] ?? 0);
            if ($user && ! $this->subscriptions->canIngestProduct($user, $store, $externalId)) {
                continue;
            }

            $this->products->ingest($store, $item);
            $count++;
        }

        return $count;
    }
}