<?php

namespace App\Services\Woo;

use App\Models\WooProduct;
use App\Models\WooStore;
use App\Support\WooHtml;
use Carbon\Carbon;

class ProductIngestService
{
    /** @param  array<string, mixed>  $payload */
    public function ingest(WooStore $store, array $payload): WooProduct
    {
        $externalId = (int) ($payload['id'] ?? 0);
        if ($externalId === 0) {
            throw new \InvalidArgumentException('WooCommerce product id missing.');
        }

        $regular = $this->priceMinor($payload['regular_price'] ?? null);
        $sale = $this->priceMinor($payload['sale_price'] ?? null);

        $images = collect((array) ($payload['images'] ?? []))
            ->map(fn (array $image, int $index) => [
                'id' => (int) ($image['id'] ?? 0),
                'src' => (string) ($image['src'] ?? ''),
                'alt' => (string) ($image['alt'] ?? ''),
                'position' => (int) ($image['position'] ?? $index),
            ])
            ->filter(fn (array $image) => $image['src'] !== '' || $image['id'] > 0)
            ->sortBy('position')
            ->values()
            ->all();

        $categoryIds = collect((array) ($payload['categories'] ?? []))
            ->map(fn (array $category) => (int) ($category['id'] ?? 0))
            ->filter(fn (int $id) => $id > 0)
            ->values()
            ->all();

        return WooProduct::query()->updateOrCreate(
            [
                'woo_store_id' => $store->id,
                'external_id' => $externalId,
            ],
            [
                'name' => (string) ($payload['name'] ?? 'Product'),
                'slug' => (string) ($payload['slug'] ?? 'product-'.$externalId),
                'sku' => $this->nullableString($payload['sku'] ?? null),
                'status' => (string) ($payload['status'] ?? WooProduct::STATUS_DRAFT),
                'type' => (string) ($payload['type'] ?? 'simple'),
                'regular_price_minor' => $regular,
                'sale_price_minor' => $sale,
                'stock_quantity' => isset($payload['stock_quantity']) ? (int) $payload['stock_quantity'] : null,
                'manage_stock' => (bool) ($payload['manage_stock'] ?? false),
                'category_external_ids' => $categoryIds,
                'images' => $images,
                'short_description' => WooHtml::sanitize($payload['short_description'] ?? null),
                'description' => WooHtml::sanitize($payload['description'] ?? null),
                'wc_updated_at' => $this->updatedAt($payload),
                'metadata' => [
                    'permalink' => $payload['permalink'] ?? null,
                    'featured' => (bool) ($payload['featured'] ?? false),
                ],
            ],
        );
    }

    public function delete(WooStore $store, int $externalId): void
    {
        WooProduct::query()
            ->where('woo_store_id', $store->id)
            ->where('external_id', $externalId)
            ->delete();
    }

    private function priceMinor(mixed $value): ?int
    {
        if ($value === null || $value === '') {
            return null;
        }

        return (int) round(((float) $value) * 100);
    }

    /** @param  array<string, mixed>  $payload */
    private function updatedAt(array $payload): ?Carbon
    {
        $raw = $payload['date_modified_gmt'] ?? $payload['date_modified'] ?? null;

        return is_string($raw) && $raw !== '' ? Carbon::parse($raw) : null;
    }

    private function nullableString(mixed $value): ?string
    {
        $text = trim((string) $value);

        return $text === '' ? null : $text;
    }
}