<?php

namespace Tests\Feature;

use App\Models\ProductCategoryModel;
use App\Models\StoreModel;

/**
 * 商品分类两级限制 + 商品只能挂末级分类：
 * 创建/编辑分类的父级必须为顶级、含子分类的分类不可移动为子级、商品分类必须为末级
 */
class ProductCategoryTest extends ProcurementTestCase
{
    /** 造一个顶级分类 */
    private function makeTopCategory(string $name = '蔬菜'): ProductCategoryModel
    {
        return ProductCategoryModel::create([
            'parent_id' => 0,
            'name' => $name,
            'sort' => 1,
            'status' => ProductCategoryModel::STATUS_NORMAL,
        ]);
    }

    /** 顶级分类下可创建子分类（二级） */
    public function test_create_child_category_under_top_level(): void
    {
        $this->actingAsSysUser();
        $top = $this->makeTopCategory();

        $this->postJson('/product/category', [
            'parent_id' => $top->id,
            'name' => '叶菜类',
        ])->assertOk()->assertJsonPath('success', true);

        $this->assertDatabaseHas('product_category', ['name' => '叶菜类', 'parent_id' => $top->id]);
    }

    /** 二级分类不可作为父级（最多二级） */
    public function test_create_category_under_second_level_rejected(): void
    {
        $this->actingAsSysUser();
        $top = $this->makeTopCategory();
        $child = ProductCategoryModel::create([
            'parent_id' => $top->id,
            'name' => '叶菜类',
            'sort' => 1,
            'status' => ProductCategoryModel::STATUS_NORMAL,
        ]);

        $this->postJson('/product/category', [
            'parent_id' => $child->id,
            'name' => '菠菜',
        ])->assertOk()
            ->assertJsonPath('success', false)
            ->assertJsonPath('msg', '最多支持二级分类，不能选择子分类作为上级');
    }

    /** 编辑：二级分类可平级移动到另一个顶级分类下 */
    public function test_update_second_level_move_to_another_top(): void
    {
        $this->actingAsSysUser();
        $topA = $this->makeTopCategory('蔬菜');
        $topB = $this->makeTopCategory('水果');
        $child = ProductCategoryModel::create([
            'parent_id' => $topA->id,
            'name' => '叶菜类',
            'sort' => 1,
            'status' => ProductCategoryModel::STATUS_NORMAL,
        ]);

        $this->putJson('/product/category/' . $child->id, [
            'parent_id' => $topB->id,
            'name' => '叶菜类',
        ])->assertOk()->assertJsonPath('success', true);

        $this->assertSame($topB->id, (int) $child->fresh()->parent_id);
    }

    /** 编辑：含子分类的分类不能调整为子分类（否则子分类变三级） */
    public function test_update_parent_with_children_cannot_move_under_category(): void
    {
        $this->actingAsSysUser();
        $top = $this->makeTopCategory('蔬菜');
        $other = $this->makeTopCategory('水果');
        ProductCategoryModel::create([
            'parent_id' => $top->id,
            'name' => '叶菜类',
            'sort' => 1,
            'status' => ProductCategoryModel::STATUS_NORMAL,
        ]);

        $this->putJson('/product/category/' . $top->id, [
            'parent_id' => $other->id,
            'name' => '蔬菜',
        ])->assertOk()
            ->assertJsonPath('success', false)
            ->assertJsonPath('msg', '该分类下存在子分类，不能调整为子分类');
    }

    /** 编辑：父级不存在时提示 */
    public function test_update_with_missing_parent_rejected(): void
    {
        $this->actingAsSysUser();
        $top = $this->makeTopCategory();

        $this->putJson('/product/category/' . $top->id, [
            'parent_id' => 99999,
            'name' => '蔬菜',
        ])->assertOk()
            ->assertJsonPath('success', false)
            ->assertJsonPath('msg', '父级分类不存在');
    }

    /** 商品只能挂在末级分类：选择有子分类的分类创建商品 → 验证失败 */
    public function test_create_product_with_parent_category_rejected(): void
    {
        $this->actingAsSysUser();
        $top = $this->makeTopCategory('蔬菜');
        ProductCategoryModel::create([
            'parent_id' => $top->id,
            'name' => '叶菜类',
            'sort' => 1,
            'status' => ProductCategoryModel::STATUS_NORMAL,
        ]);

        $this->postJson('/product/goods', [
            'category_id' => $top->id,
            'name' => '大白菜',
        ])->assertOk()
            ->assertJsonPath('success', false)
            ->assertJsonPath('msg', '该分类下存在子分类，请选择末级分类');
    }

    /** 商品挂在末级分类（无子分类）可正常创建 */
    public function test_create_product_with_leaf_category_ok(): void
    {
        $this->actingAsSysUser();
        $top = $this->makeTopCategory('蔬菜');
        $leaf = ProductCategoryModel::create([
            'parent_id' => $top->id,
            'name' => '叶菜类',
            'sort' => 1,
            'status' => ProductCategoryModel::STATUS_NORMAL,
        ]);

        $this->postJson('/product/goods', [
            'category_id' => $leaf->id,
            'name' => '大白菜',
            'content' => '图文详情',
        ])->assertOk()->assertJsonPath('success', true);
    }

    /** 小程序分类树：返回全部启用分类（含无商品的分类），停用分类不返回 */
    public function test_mini_categories_returns_all_enabled_categories(): void
    {
        $top = $this->makeTopCategory('蔬菜');
        $empty = $this->makeTopCategory('水产'); // 无任何商品
        ProductCategoryModel::create([
            'parent_id' => $top->id,
            'name' => '叶菜类',
            'sort' => 1,
            'status' => ProductCategoryModel::STATUS_NORMAL,
        ]);
        $disabled = ProductCategoryModel::create([
            'parent_id' => 0,
            'name' => '停用分类',
            'sort' => 1,
            'status' => ProductCategoryModel::STATUS_DISABLED,
        ]);

        $this->actingAsMiniStore(StoreModel::factory()->create());

        $response = $this->getJson('/mini/product/categories');
        $response->assertOk()->assertJsonPath('success', true);

        $ids = collect($response->json('data'))->pluck('id');
        $this->assertContains($top->id, $ids);
        $this->assertContains($empty->id, $ids, '无商品的分类也应返回');
        $this->assertNotContains($disabled->id, $ids, '停用分类不应返回');
    }
}