<?php

namespace App\Services\Woo;

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

class CatalogWriteService
{
    public function __construct(
        private PluginClient $client,
        private ProductIngestService $productIngest,
        private CategoryIngestService $categoryIngest,
    ) {}

    /** @param  array<string, mixed>  $input */
    public function createProduct(WooStore $store, array $input): WooProduct
    {
        $payload = $this->productPayload($input);
        $response = $this->client->post($store, 'products', $payload);

        if (is_array($response) && isset($response['id'])) {
            return $this->productIngest->ingest($store, $response);
        }

        return $this->createLocalProduct($store, $payload);
    }

    /** @param  array<string, mixed>  $input */
    public function updateProduct(WooProduct $product, array $input): WooProduct
    {
        $product->loadMissing('store');
        $store = $product->store;
        abort_if(! $store, 404);

        $payload = $this->productPayload($input);
        $response = $this->client->put($store, 'products/'.$product->external_id, $payload);

        if (is_array($response) && isset($response['id'])) {
            return $this->productIngest->ingest($store, $response);
        }

        $product->update($this->localProductAttributes($payload));

        return $product->fresh();
    }

    /** @param  array<string, mixed>  $input */
    public function createCategory(WooStore $store, array $input): WooCategory
    {
        $payload = $this->categoryPayload($input);
        $response = $this->client->post($store, 'categories', $payload);

        if (is_array($response) && isset($response['id'])) {
            return $this->categoryIngest->ingest($store, $response);
        }

        return $this->createLocalCategory($store, $payload);
    }

    /** @param  array<string, mixed>  $input */
    public function updateCategory(WooCategory $category, array $input): WooCategory
    {
        $category->loadMissing('store');
        $store = $category->store;
        abort_if(! $store, 404);

        $payload = $this->categoryPayload($input);
        $response = $this->client->put($store, 'categories/'.$category->external_id, $payload);

        if (is_array($response) && isset($response['id'])) {
            return $this->categoryIngest->ingest($store, $response);
        }

        $category->update($this->localCategoryAttributes($payload));

        return $category->fresh();
    }

    public function deleteCategory(WooCategory $category): bool
    {
        $category->loadMissing('store');
        $store = $category->store;
        abort_if(! $store, 404);

        if ($this->client->delete($store, 'categories/'.$category->external_id)) {
            $category->delete();

            return true;
        }

        $category->delete();

        return true;
    }

    /** @param  array<string, mixed>  $input */
    private function productPayload(array $input): array
    {
        $categories = collect($input['category_external_ids'] ?? [])
            ->map(fn ($id) => ['id' => (int) $id])
            ->filter(fn (array $row) => $row['id'] > 0)
            ->values()
            ->all();

        return array_filter([
            'name' => (string) ($input['name'] ?? ''),
            'sku' => $input['sku'] ?? null,
            'status' => (string) ($input['status'] ?? WooProduct::STATUS_DRAFT),
            'regular_price' => $this->majorPrice($input['regular_price'] ?? null),
            'sale_price' => $this->majorPrice($input['sale_price'] ?? null),
            'manage_stock' => (bool) ($input['manage_stock'] ?? false),
            'stock_quantity' => isset($input['stock_quantity']) ? (int) $input['stock_quantity'] : null,
            'short_description' => WooHtml::sanitize($input['short_description'] ?? null),
            'description' => WooHtml::sanitize($input['description'] ?? null),
            'categories' => $categories,
            'images' => $input['images'] ?? null,
        ], fn ($value) => $value !== null && $value !== '');
    }

    /** @param  array<string, mixed>  $input */
    private function categoryPayload(array $input): array
    {
        $parent = (int) ($input['parent_external_id'] ?? 0);

        return array_filter([
            'name' => (string) ($input['name'] ?? ''),
            'slug' => $input['slug'] ?? null,
            'description' => WooHtml::sanitize($input['description'] ?? null),
            'parent' => $parent > 0 ? $parent : 0,
        ], fn ($value) => $value !== null && $value !== '');
    }

    /** @param  array<string, mixed>  $payload */
    private function createLocalProduct(WooStore $store, array $payload): WooProduct
    {
        $externalId = (int) (WooProduct::query()->where('woo_store_id', $store->id)->max('external_id') ?? 0) + 1;

        return WooProduct::query()->create(array_merge(
            $this->localProductAttributes($payload),
            [
                'woo_store_id' => $store->id,
                'external_id' => $externalId,
                'slug' => \Illuminate\Support\Str::slug((string) ($payload['name'] ?? 'product')).'-'.$externalId,
            ],
        ));
    }

    /** @param  array<string, mixed>  $payload */
    private function createLocalCategory(WooStore $store, array $payload): WooCategory
    {
        $externalId = (int) (WooCategory::query()->where('woo_store_id', $store->id)->max('external_id') ?? 0) + 1;
        $parent = (int) ($payload['parent'] ?? 0);

        return WooCategory::query()->create(array_merge(
            $this->localCategoryAttributes($payload),
            [
                'woo_store_id' => $store->id,
                'external_id' => $externalId,
                'parent_external_id' => $parent > 0 ? $parent : null,
                'slug' => (string) ($payload['slug'] ?? \Illuminate\Support\Str::slug((string) ($payload['name'] ?? 'category')).'-'.$externalId),
            ],
        ));
    }

    /** @param  array<string, mixed>  $payload */
    private function localProductAttributes(array $payload): array
    {
        $categoryIds = collect($payload['categories'] ?? [])
            ->map(fn (array $row) => (int) ($row['id'] ?? 0))
            ->filter(fn (int $id) => $id > 0)
            ->values()
            ->all();

        return [
            'name' => (string) ($payload['name'] ?? 'Product'),
            'sku' => $payload['sku'] ?? null,
            'status' => (string) ($payload['status'] ?? WooProduct::STATUS_DRAFT),
            'regular_price_minor' => $this->minorPrice($payload['regular_price'] ?? null),
            'sale_price_minor' => $this->minorPrice($payload['sale_price'] ?? null),
            'manage_stock' => (bool) ($payload['manage_stock'] ?? false),
            'stock_quantity' => isset($payload['stock_quantity']) ? (int) $payload['stock_quantity'] : null,
            'short_description' => $payload['short_description'] ?? null,
            'description' => $payload['description'] ?? null,
            'category_external_ids' => $categoryIds,
            'images' => $payload['images'] ?? null,
        ];
    }

    /** @param  array<string, mixed>  $payload */
    private function localCategoryAttributes(array $payload): array
    {
        $parent = (int) ($payload['parent'] ?? 0);

        return [
            'name' => (string) ($payload['name'] ?? 'Category'),
            'slug' => (string) ($payload['slug'] ?? \Illuminate\Support\Str::slug((string) ($payload['name'] ?? 'category'))),
            'description' => $payload['description'] ?? null,
            'parent_external_id' => $parent > 0 ? $parent : null,
        ];
    }

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

        return number_format(((float) $value), 2, '.', '');
    }

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

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