<?php
namespace App\Domains\Virtual\Services;

use App\Dicts;
use App\Core\Service;
use App\Models\Virtual\Product;
use Illuminate\Validation\Rule;
use Illuminate\Support\Facades\DB;
use App\Exceptions\NotExistException;
use App\Exceptions\NotAllowedException;
use Illuminate\Support\Facades\Validator;
use App\Domains\Virtual\Services\CompanyService;
use App\Domains\Virtual\Services\PackageService;
use App\Domains\Virtual\Repositories\PackageRepository;
use App\Domains\Virtual\Repositories\ProductRepository;

class ProductService extends Service
{
    protected $productRepository;

    protected static $products;

    /**
     * 构造函数
     *
     * @return void
     */
    public function __construct(ProductRepository $productRepository)
    {
        $this->productRepository = $productRepository;
    }

    /**
     * 获取企业定价列表
     *
     * @param array $conditions
     * @return Collection
     */
    public function index(array $conditions = [])
    {
        $list = $this->productRepository->whereHas('package', function ($query) {
            $query->whereNull('deleted_at');
        })->whereHas('company', function ($query) {
            $query->whereNull('deleted_at');
        })->withConditions($conditions)->applyConditions()->get();

        $carrierOperators = app(Dicts::class)->get('carrier_operator');

        $list->map(function ($item) use ($carrierOperators) {
            $item->company = CompanyService::load($item->company_id);
            $item->package = PackageService::load($item->package_id);
            $item->price = sprintf('%.02f', $item->price/100);
            $item->renew_price = sprintf('%.02f', $item->renew_price/100);
            $item->status = $item['package']['status'] ? 1 : $item->status;
            $item->carrier_operator = $item['package']['carrier_operator'];
            $item->carrier_operator_name = $carrierOperators[$item->carrier_operator] ?? '未知';
            $item->status = $item->deleted_at ? 2 : $item->status;
        });

        return $list;
    }

    /**
     * 获取历史定价列表
     *
     * @param array $conditions
     * @return Collection
     */
    public function history(array $conditions = [])
    {
        $select = ['id', 'company_id', 'package_id', 'price', 'renew_price', 'created_at', 'updated_at'];

        $list = $this->productRepository->select($select)->withTrashed()->withConditions($conditions)->orderBy('created_at', 'desc')->get();

        $list->map(function ($item) {
            $item->price = sprintf('%.02f', $item->price/100);
            $item->renew_price = sprintf('%.02f', $item->renew_price/100);
        });

        return $list;
    }

    /**
     * 存储企业定价
     *
     * @param array $attributes
     * @return Product
     */
    public function store(array $attributes = [])
    {
        if (isset($attributes['price'])) {
            $attributes['price'] = intval($attributes['price'] * 100);
        }

        if (isset($attributes['renew_price'])) {
            $attributes['renew_price'] = intval($attributes['renew_price'] * 100);
        }

        $rule = [
            'name' => ['required', 'between:2,32', Rule::unique($this->productRepository->getTable(), 'name')->ignore($attributes['id'])->whereNUll('deleted_at')->where('company_id', $attributes['company_id'])],
            'company_id' => ['required', 'exists:virtual_companies,id'],
            'package_id' => ['required'],
            'price' => [],
            'remark' => [],
        ];

        $message = [
            'name.required' => '请输入定价名称',
            'name.between' => '请输入2-32个字符',
            'name.unique' => '定价名称已存在，请更新输入',
            'company_id.required' => '请输入企业ID',
            'company_id.exists' => '企业不存在或已删除',
            'package_id.required' => '请输入套餐ID',
        ];

        Validator::validate($attributes, $rule, $message);

        if (!$package = app(PackageRepository::class)->find($attributes['package_id'])) {
            throw new NotExistException('套餐不存在或已删除');
        }

        DB::beginTransaction();

        try {
            // 上一次定价
            $newest =  $this->productRepository->where('company_id', $attributes['company_id'])
                ->where('package_id', $attributes['package_id'])->first();

            if ($newest && (isset($attributes['price']) && $newest->price !== $attributes['price']) || (isset($attributes['renew_price']) && $newest->renew_price !== $attributes['renew_price'])) {
                unset($attributes['id']);
                $newest->delete();

                $attributes['renew_price'] = $attributes['renew_price'] ?? $newest->renew_price;
                $attributes['price'] = $attributes['price'] ?? $newest->price;
            }

            if ($attributes['id']) {
                if (!$node = $this->productRepository->find($attributes['id'])) {
                    throw new NotExistException('定价不存在或已删除');
                }

                if ($attributes['status'] == 0) {
                    $node->load(['package:id,status']);

                    if ($node['package']['status'] === 1) {
                        throw new NotAllowedException('套餐已被禁用,不能启用');
                    }
                }

                $this->productRepository->setModel($node)->update($attributes);
                return $node;
            } else {
                $attributes['sn'] = self::sn($package['sn'], $attributes['company_id']);

                $node = $this->productRepository->create($attributes);
            }

            DB::commit();
        } catch (\Exception $e) {
            DB::rollback();
            throw $e;
        }

        return $node;
    }

    /**
     * 删除
     *
     * @return bool
     */
    public function destroy($ids)
    {
        $ids = is_array($ids) ? $ids : [$ids];

        $this->productRepository->destroy($ids);

        return true;
    }

    public static function load($type, $companyId, $packageId)
    {
        $type = $type === 1 ? 0 : $type;

        if (!self::$products) {
            self::$products = app(ProductRepository::class)
                ->select(['id', 'type', 'name', 'company_id', 'package_id', 'price', 'renew_price', 'status'])
                ->get();
        }

        return self::$products->filter(function ($item) use ($type, $companyId, $packageId) {
            return $item->type === $type && $item->company_id === $companyId && $item->package_id === $packageId;
        })->first();
    }

    public static function sn($packageSn, $companyId)
    {
        return strtoupper($packageSn . '_' . $companyId);
    }

    /**
     * 获取定价
     *
     * @param int $type
     * @param int $companyId
     * @param int $packageId
     * @param int $price
     * @return void
     */
    public static function getProduct($type, $companyId, $packageId, $price)
    {
        $package = PackageService::load($packageId);

        $product = self::load($type, $companyId, $packageId);

        $field = $type === 1 ? 'renew_price' : 'price';

        if (!$product || $product[$field] !== $price) {
            $product = app(ProductService::class)->store([
                'name'          => $package['name'],
                'company_id'    => $companyId,
                'package_id'    => $package['id'],
                $field => $price/100,
            ]);
        }

        return $product;
    }
}