<?php

namespace App\Services\Import;

use App\Models\PosProduct;
use App\Services\Crm\CrmClient;
use RuntimeException;

class CrmProductImportService
{
    /**
     * @return array{imported: int, updated: int}
     */
    public function import(string $ownerRef): array
    {
        $response = CrmClient::for($ownerRef)->products(['active' => 1, 'per_page' => 500]);
        $rows = (array) ($response['data'] ?? []);

        if ($rows === []) {
            throw new RuntimeException('No active products found in CRM.');
        }

        $imported = 0;
        $updated = 0;

        foreach ($rows as $row) {
            $name = trim((string) ($row['name'] ?? ''));
            if ($name === '') {
                continue;
            }

            $sku = isset($row['sku']) && $row['sku'] !== '' ? (string) $row['sku'] : null;
            $matchQuery = PosProduct::owned($ownerRef)->where('name', $name);
            if ($sku) {
                $matchQuery = PosProduct::owned($ownerRef)->where(fn ($q) => $q->where('sku', $sku)->orWhere('name', $name));
            }
            $existing = $matchQuery->first();

            $attrs = [
                'name' => $name,
                'sku' => $sku,
                'price_minor' => max(0, (int) ($row['unit_price_minor'] ?? 0)),
                'currency' => strtoupper((string) ($row['currency'] ?? config('pos.default_currency', 'GHS'))),
                'is_active' => (bool) ($row['active'] ?? true),
            ];

            if ($existing) {
                $existing->update($attrs);
                $updated++;
            } else {
                PosProduct::create([...$attrs, 'owner_ref' => $ownerRef]);
                $imported++;
            }
        }

        return compact('imported', 'updated');
    }
}