kknongchang_2506/app/Module/Shop/AdminControllers/ShopPromotionController.php

<?php

namespace App\Module\Shop\AdminControllers;


use App\Module\Shop\Models\ShopItem;
use App\Module\Shop\Models\ShopPromotion;
use App\Module\Shop\Repositorys\ShopPromotionRepository;
use Dcat\Admin\Form;
use Dcat\Admin\Grid;
use Dcat\Admin\Show;
use Dcat\Admin\Http\Controllers\AdminController;
use Dcat\Admin\Layout\Content;
use Dcat\Admin\Widgets\Card;
use Dcat\Admin\Widgets\Table;
use Illuminate\Http\Request;
use Spatie\RouteAttributes\Attributes\Resource;
use Spatie\RouteAttributes\Attributes\Get;
use Spatie\RouteAttributes\Attributes\Post;

/**
 * 商店促销活动管理控制器
 */
#[Resource('shop-promotions', names: 'dcat.admin.shop.promotions')]
class ShopPromotionController extends AdminController
{
    /**
     * 页面标题
     *
     * @var string
     */
    protected $title = '促销活动';

    /**
     * 创建表格
     *
     * @return Grid
     */
    protected function grid()
    {
        return Grid::make(new ShopPromotionRepository(), function (Grid $grid) {
            $grid->column('id', 'ID')->sortable();
            $grid->column('name', '活动名称');
            $grid->column('banner', '横幅图片')->image('', 100, 50);
            $grid->column('discount_type', '折扣类型')->display(function ($type) {
                return $type == ShopPromotion::DISCOUNT_TYPE_FIXED ? '固定折扣' : '百分比折扣';
            });
            $grid->column('discount_value', '折扣值')->display(function ($value) {
                if ($this->discount_type == ShopPromotion::DISCOUNT_TYPE_FIXED) {
                    return $value . ' 元';
                } else {
                    return $value . '%';
                }
            });
            $grid->column('is_active', '状态')->switch();
            $grid->column('sort_order', '排序权重')->sortable();
            $grid->column('start_time', '开始时间')->sortable();
            $grid->column('end_time', '结束时间')->sortable();
            $grid->column('created_at', '创建时间')->sortable();

            // 添加操作按钮
            $grid->actions(function (Grid\Displayers\Actions $actions) {
                $actions->append('<a href="' . admin_url('shop/promotions/' . $actions->row->id . '/items') . '" class="btn btn-sm btn-primary">管理商品</a>');
            });

            // 过滤器
            $grid->filter(function (Grid\Filter $filter) {
                $filter->equal('id', 'ID');
                $filter->like('name', '活动名称');
                $filter->equal('discount_type', '折扣类型')->select([
                    ShopPromotion::DISCOUNT_TYPE_FIXED => '固定折扣',
                    ShopPromotion::DISCOUNT_TYPE_PERCENTAGE => '百分比折扣',
                ]);
                $filter->equal('is_active', '状态')->select([
                    0 => '禁用',
                    1 => '启用',
                ]);
                $filter->between('start_time', '开始时间')->datetime();
                $filter->between('end_time', '结束时间')->datetime();
            });

            // 工具栏
            $grid->toolsWithOutline(false);
            $grid->disableViewButton();
            $grid->showQuickEditButton();
            $grid->enableDialogCreate();
            $grid->enableDialogEdit();
            $grid->setDialogFormDimensions('800px', '720px');
        });
    }

    /**
     * 创建详情页
     *
     * @param mixed $id
     * @return Show
     */
    protected function detail($id)
    {
        return Show::make($id, new ShopPromotionRepository(), function (Show $show) {
            $show->field('id', 'ID');
            $show->field('name', '活动名称');
            $show->field('description', '活动描述');
            $show->field('banner', '横幅图片')->image();
            $show->field('discount_type', '折扣类型')->as(function ($type) {
                return $type == ShopPromotion::DISCOUNT_TYPE_FIXED ? '固定折扣' : '百分比折扣';
            });
            $show->field('discount_value', '折扣值')->as(function ($value) {
                if ($this->discount_type == ShopPromotion::DISCOUNT_TYPE_FIXED) {
                    return $value . ' 元';
                } else {
                    return $value . '%';
                }
            });
            $show->field('is_active', '状态')->as(function ($isActive) {
                return $isActive ? '启用' : '禁用';
            });
            $show->field('sort_order', '排序权重');
            $show->field('start_time', '开始时间');
            $show->field('end_time', '结束时间');
            $show->field('created_at', '创建时间');
            $show->field('updated_at', '更新时间');
        });
    }

    /**
     * 创建表单
     *
     * @return Form
     */
    protected function form()
    {
        return Form::make(new ShopPromotionRepository(), function (Form $form) {
            $form->display('id', 'ID');
            $form->text('name', '活动名称')->required();
            $form->textarea('description', '活动描述')->rows(3);
            $form->image('banner', '横幅图片')->autoUpload()->uniqueName()->help('建议尺寸：1200x300');
            $form->radio('discount_type', '折扣类型')
                ->options([
                    ShopPromotion::DISCOUNT_TYPE_FIXED => '固定折扣',
                    ShopPromotion::DISCOUNT_TYPE_PERCENTAGE => '百分比折扣',
                ])
                ->default(ShopPromotion::DISCOUNT_TYPE_PERCENTAGE)
                ->required();
            $form->number('discount_value', '折扣值')
                ->min(0)
                ->help('固定折扣为具体金额，百分比折扣为1-100的整数')
                ->required();
            $form->number('sort_order', '排序权重')->default(0)->help('数字越小越靠前');
            $form->switch('is_active', '状态')->default(true);
            $form->datetime('start_time', '开始时间')->help('留空表示不限制开始时间');
            $form->datetime('end_time', '结束时间')->help('留空表示不限制结束时间');

            $form->display('created_at', '创建时间');
            $form->display('updated_at', '更新时间');
        });
    }

    /**
     * 管理促销活动商品
     *
     * @param Content $content
     * @param int $id
     * @return Content
     */
    #[Get('shop/promotions/{id}/items')]
    public function items(Content $content, $id)
    {
        $promotion = ShopPromotion::findOrFail($id);

        $content->title('管理促销活动商品');
        $content->description('为促销活动 "' . $promotion->name . '" 添加或移除商品');

        // 已添加的商品
        $addedItems = $promotion->items()->with('category')->get();
        $addedItemsTable = $this->buildAddedItemsTable($addedItems, $promotion);

        // 添加商品表单
        $addItemForm = $this->buildAddItemForm($id);

        $content->row(function ($row) use ($promotion) {
            $row->column(12, new Card('促销活动信息', view('admin.shop.promotion_info', ['promotion' => $promotion])));
        });

        $content->row(function ($row) use ($addedItemsTable) {
            $row->column(12, new Card('已添加商品', $addedItemsTable));
        });

        $content->row(function ($row) use ($addItemForm) {
            $row->column(12, new Card('添加商品', $addItemForm));
        });

        return $content;
    }

    /**
     * 构建已添加商品表格
     *
     * @param Collection $items
     * @param ShopPromotion $promotion
     * @return Table
     */
    protected function buildAddedItemsTable($items, $promotion)
    {
        $headers = ['ID', '商品名称', '分类', '原价', '折扣价', '自定义折扣值', '操作'];
        $rows = [];

        foreach ($items as $item) {
            $customDiscountValue = $item->pivot->custom_discount_value;
            $originalPrice = $item->price;
            $discountedPrice = $promotion->calculateDiscountedPrice($originalPrice, $customDiscountValue);

            $removeUrl = admin_url('shop/promotions/' . $promotion->id . '/items/remove?item_id=' . $item->id);
            $removeButton = "<a href=\"{$removeUrl}\" class=\"btn btn-sm btn-danger\" onclick=\"return confirm('确定要移除该商品吗？')\">移除</a>";

            $rows[] = [
                $item->id,
                $item->name,
                $item->category->name ?? '未分类',
                $originalPrice,
                $discountedPrice,
                $customDiscountValue ?? '使用默认值',
                $removeButton
            ];
        }

        return new Table($headers, $rows);
    }

    /**
     * 构建添加商品表单
     *
     * @param int $promotionId
     * @return string
     */
    protected function buildAddItemForm($promotionId)
    {
        $form = new Form();
        $form->action(admin_url('shop/promotions/' . $promotionId . '/items/add'));

        $form->select('item_id', '选择商品')
            ->options(ShopItem::where('is_active', true)->pluck('name', 'id'))
            ->required();

        $form->number('custom_discount_value', '自定义折扣值')
            ->help('留空则使用促销活动的默认折扣值');

        $form->hidden('_token')->default(csrf_token());

        $form->submit('添加商品');

        return $form->render();
    }

    /**
     * 添加商品到促销活动
     *
     * @param Request $request
     * @param int $id
     * @return \Illuminate\Http\RedirectResponse
     */
    #[Post('shop/promotions/{id}/items/add')]
    public function addItem(Request $request, $id)
    {
        $request->validate([
            'item_id' => 'required|integer|exists:shop_items,id',
            'custom_discount_value' => 'nullable|integer|min:0',
        ]);

        $promotionId = $id;
        $shopItemId = $request->input('item_id');
        $customDiscountValue = $request->input('custom_discount_value');

        // 添加商品到促销活动
        $result = \App\Module\Shop\Services\ShopService::addItemToPromotion(
            $promotionId,
            $shopItemId,
            $customDiscountValue
        );

        admin_success('成功', '商品已添加到促销活动');

        return redirect()->back();
    }

    /**
     * 从促销活动中移除商品
     *
     * @param Request $request
     * @param int $id
     * @return \Illuminate\Http\RedirectResponse
     */
    #[Get('shop/promotions/{id}/items/remove')]
    public function removeItem(Request $request, $id)
    {
        $request->validate([
            'item_id' => 'required|integer|exists:shop_items,id',
        ]);

        $promotionId = $id;
        $shopItemId = $request->input('item_id');

        // 从促销活动中移除商品
        $result = \App\Module\Shop\Services\ShopService::removeItemFromPromotion(
            $promotionId,
            $shopItemId
        );

        if ($result) {
            admin_success('成功', '商品已从促销活动中移除');
        } else {
            admin_error('失败', '移除商品失败');
        }

        return redirect()->back();
    }
}