<?php

namespace App\Http\Controllers\Customer;

use App\Exceptions\RepositoryException;
use App\Http\Requests\Customer\CustomerLevelFormRequest;
use App\Models\CustomerLevelModel;
use App\Models\NoticeModel;
use App\Models\StoreModel;
use App\Models\UserModel;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\DB;
use Modules\AnnoRoute\Attribute\DeleteRoute;
use Modules\AnnoRoute\Attribute\GetRoute;
use Modules\AnnoRoute\Attribute\PostRoute;
use Modules\AnnoRoute\Attribute\PutRoute;
use Modules\AnnoRoute\Attribute\RequestAttribute;
use Modules\Common\Http\Controllers\BaseController;
use Modules\SystemTool\Services\SysFileService;

/**
 * 客户等级管理（同一商品按等级上浮比例定价：售价 = 成本价 × (100 + percent) / 100）
 */
#[RequestAttribute('/customer/level', 'customer.level')]
class CustomerLevelController extends BaseController
{
    protected array $searchField = [
        'name' => 'like',
        'status' => '=',
    ];

    /** 等级列表 */
    #[GetRoute(authorize: 'query')]
    public function query(Request $request): JsonResponse
    {
        $params = $request->all();
        $pageSize = $params['pageSize'] ?? 10;
        $data = $this->buildSearch($params, CustomerLevelModel::query())
            ->orderBy('sort')
            ->orderBy('id', 'desc')
            ->paginate($pageSize)
            ->toArray();
        return $this->success($data);
    }

    /** 上传等级图片文件 */
    #[PostRoute('/upload', 'create')]
    public function uploadImage(Request $request, SysFileService $service): JsonResponse
    {
        $data = $request->validate(['file' => 'required|file']);
        $result = $service->upload(
            $data['file'],
            8,
            20,
            Auth::id()
        );
        return $this->success($result);
    }

    /** 创建等级 */
    #[PostRoute(authorize: 'create')]
    public function create(CustomerLevelFormRequest $request): JsonResponse
    {
        CustomerLevelModel::create($request->validated());
        return $this->success();
    }

    /** 编辑等级（上浮比例变更时通知该等级下门店用户） */
    #[PutRoute(route: '/{id}', authorize: 'update', where: ['id' => '[0-9]+'])]
    public function update(int $id, CustomerLevelFormRequest $request): JsonResponse
    {
        $model = CustomerLevelModel::find($id);
        if (empty($model)) {
            throw new RepositoryException('客户等级不存在');
        }
        $validated = $request->validated();
        DB::transaction(function () use ($model, $validated) {
            $model->update($validated);
            // 上浮比例变化 → 该等级下所有商品的售价联动变化，通知受影响门店用户
            if ($model->wasChanged('percent')) {
                $this->notifyPriceChange($model);
            }
        });
        return $this->success();
    }

    /** 删除等级（被门店引用时拒绝） */
    #[DeleteRoute(route: '/{id}', authorize: 'delete', where: ['id' => '[0-9]+'])]
    public function delete(int $id): JsonResponse
    {
        $model = CustomerLevelModel::find($id);
        if (empty($model)) {
            throw new RepositoryException('客户等级不存在');
        }
        if ($model->stores()->exists()) {
            throw new RepositoryException('该等级下存在门店，无法删除');
        }
        $model->delete();
        return $this->success();
    }

    /** 等级下拉选项（门店表单 / 价格矩阵用） */
    #[GetRoute('/options', 'query')]
    public function options(): JsonResponse
    {
        $data = CustomerLevelModel::query()
            ->where('status', CustomerLevelModel::STATUS_NORMAL)
            ->orderBy('sort')
            ->get(['id', 'name', 'percent'])
            ->toArray();
        return $this->success($data);
    }

    /**
     * 上浮比例变更后，给该等级下正常门店绑定的正常用户生成价格变更通知
     */
    private function notifyPriceChange(CustomerLevelModel $level): void
    {
        $userIds = UserModel::query()
            ->where('status', UserModel::STATUS_NORMAL)
            ->whereIn('store_id', function ($q) use ($level) {
                $q->select('id')
                    ->from('store')
                    ->where('status', StoreModel::STATUS_NORMAL)
                    ->where('level_id', $level->id);
            })
            ->pluck('id');

        $content = mb_substr(
            '您所在客户等级「' . $level->name . '」的价格上浮比例已调整为 ' . (float) $level->percent . '%，商品价格将按新比例显示',
            0,
            500
        );

        foreach ($userIds as $userId) {
            NoticeModel::create([
                'user_id' => $userId,
                'type' => NoticeModel::TYPE_PRICE,
                'title' => '商品价格变更',
                'content' => $content,
                'data' => ['level_id' => $level->id],
                'is_read' => NoticeModel::UNREAD,
            ]);
        }
    }
}