package repository_test

import (
	"errors"
	"fmt"
	"testing"
	"time"

	"git.huangwc.com/pig/pig-farm-controller/internal/infra/models"
	"git.huangwc.com/pig/pig-farm-controller/internal/infra/repository"
	"github.com/stretchr/testify/assert"
	"gorm.io/gorm"
)

// createTestPlan 是一个辅助函数，用于创建测试计划。
func createTestPlan(name, description string, execType models.PlanExecutionType, contentType models.PlanContentType) models.Plan {
	return models.Plan{
		Name:          name,
		Description:   description,
		ExecutionType: execType,
		ContentType:   contentType,
	}
}

// TestListBasicPlans 测试 ListBasicPlans 方法，确保它能正确返回所有计划的基本信息。
func TestListBasicPlans(t *testing.T) {
	tests := []struct {
		name          string
		setupPlans    []models.Plan
		expectedCount int
		expectedError error
	}{
		{
			name:          "数据库中没有计划",
			setupPlans:    []models.Plan{},
			expectedCount: 0,
			expectedError: nil,
		},
		{
			name: "数据库中有多个计划",
			setupPlans: []models.Plan{
				createTestPlan("计划 A", "描述 A", models.PlanExecutionTypeAutomatic, models.PlanContentTypeTasks),
				createTestPlan("计划 B", "描述 B", models.PlanExecutionTypeManual, models.PlanContentTypeSubPlans),
			},
			expectedCount: 2,
			expectedError: nil,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			db := setupTestDB(t)
			repo := repository.NewGormPlanRepository(db)

			for i := range tt.setupPlans {
				err := db.Create(&tt.setupPlans[i]).Error
				assert.NoError(t, err, "插入设置计划失败")
			}

			plans, err := repo.ListBasicPlans()

			if tt.expectedError != nil {
				assert.Error(t, err)
				assert.True(t, errors.Is(err, tt.expectedError))
			} else {
				assert.NoError(t, err)
				assert.Len(t, plans, tt.expectedCount)
				if tt.expectedCount > 0 {
					// 验证返回的计划是否包含预期的ID
					var actualIDs []uint
					for _, p := range plans {
						actualIDs = append(actualIDs, p.ID)
						assert.Empty(t, p.SubPlans, "ListBasicPlans 不应加载子计划")
						assert.Empty(t, p.Tasks, "ListBasicPlans 不应加载任务")
					}
					for _, setupPlan := range tt.setupPlans {
						assert.Contains(t, actualIDs, setupPlan.ID, "返回的计划应包含设置计划的ID")
					}
				}
			}
		})
	}
}

// TestGetBasicPlanByID 测试 GetBasicPlanByID 方法，确保它能根据ID正确返回计划的基本信息。
func TestGetBasicPlanByID(t *testing.T) {
	tests := []struct {
		name          string
		setupPlan     models.Plan
		idToFetch     uint
		expectFound   bool
		expectedError error
	}{
		{
			name:        "通过ID找到计划",
			setupPlan:   createTestPlan("计划 C", "描述 C", models.PlanExecutionTypeAutomatic, models.PlanContentTypeTasks),
			idToFetch:   0, // 创建后设置
			expectFound: true,
		},
		{
			name:          "通过ID未找到计划",
			setupPlan:     models.Plan{}, // 此情况下无需设置计划
			idToFetch:     999,
			expectFound:   false,
			expectedError: gorm.ErrRecordNotFound,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			db := setupTestDB(t)
			repo := repository.NewGormPlanRepository(db)

			if tt.setupPlan.Name != "" { // 仅在有效设置时创建计划
				err := db.Create(&tt.setupPlan).Error
				assert.NoError(t, err, "插入设置计划失败")
				tt.idToFetch = tt.setupPlan.ID // 使用数据库生成的ID
			}

			fetchedPlan, err := repo.GetBasicPlanByID(tt.idToFetch)

			if tt.expectedError != nil {
				assert.Error(t, err)
				assert.True(t, errors.Is(err, tt.expectedError), "预期错误类型不匹配")
				assert.Nil(t, fetchedPlan)
			} else {
				assert.NoError(t, err)
				assert.NotNil(t, fetchedPlan)
				assert.Equal(t, tt.setupPlan.Name, fetchedPlan.Name)
				assert.Equal(t, tt.setupPlan.Description, fetchedPlan.Description)
				assert.Equal(t, tt.setupPlan.ExecutionType, fetchedPlan.ExecutionType)
				assert.Equal(t, tt.setupPlan.ContentType, fetchedPlan.ContentType)
				assert.Empty(t, fetchedPlan.SubPlans, "GetBasicPlanByID 不应加载子计划")
				assert.Empty(t, fetchedPlan.Tasks, "GetBasicPlanByID 不应加载任务")
			}
		})
	}
}

// TestGetPlanByID 测试 GetPlanByID 方法，确保它能根据ID正确返回计划的完整信息，包括关联数据。
func TestGetPlanByID(t *testing.T) {
	type testCase struct {
		name          string
		setupData     func(db *gorm.DB) // 用于在测试前插入数据
		planID        uint
		expectedPlan  *models.Plan
		expectedError string
	}

	testCases := []testCase{
		{
			name: "PlanNotFound",
			setupData: func(db *gorm.DB) {
				// 不插入任何数据
			},
			planID:        999,
			expectedPlan:  nil,
			expectedError: "record not found",
		},
		{
			name: "PlanWithTasks",
			setupData: func(db *gorm.DB) {
				// 使用硬编码的ID创建计划，使测试可预测
				plan := models.Plan{
					Model:       gorm.Model{ID: 1},
					Name:        "Plan A",
					ContentType: models.PlanContentTypeTasks,
				}
				db.Create(&plan)
				// 创建任务，它们的ID将由数据库自动生成
				db.Create(&models.Task{PlanID: 1, Name: "Task 2", ExecutionOrder: 1})
				db.Create(&models.Task{PlanID: 1, Name: "Task 1", ExecutionOrder: 2})
			},
			planID: 1,
			expectedPlan: &models.Plan{
				Model:       gorm.Model{ID: 1},
				Name:        "Plan A",
				ContentType: models.PlanContentTypeTasks,
				Tasks: []models.Task{
					// 期望按 "order" 字段升序排序
					{PlanID: 1, Name: "Task 2", ExecutionOrder: 1},
					{PlanID: 1, Name: "Task 1", ExecutionOrder: 2},
				},
			},
			expectedError: "",
		},
		{
			name: "PlanWithMultiLevelSubPlans",
			setupData: func(db *gorm.DB) {
				// 创建一个三层结构的计划
				db.Create(&models.Plan{Model: gorm.Model{ID: 20}, Name: "Grandparent Plan", ContentType: models.PlanContentTypeSubPlans})
				db.Create(&models.Plan{Model: gorm.Model{ID: 21}, Name: "Parent Plan", ContentType: models.PlanContentTypeSubPlans})
				db.Create(&models.Plan{Model: gorm.Model{ID: 22}, Name: "Child Plan With Tasks", ContentType: models.PlanContentTypeTasks})
				db.Create(&models.Task{PlanID: 22, Name: "Grandchild's Task", ExecutionOrder: 1})

				// 创建关联关系
				db.Create(&models.SubPlan{ParentPlanID: 20, ChildPlanID: 21, ExecutionOrder: 1})
				db.Create(&models.SubPlan{ParentPlanID: 21, ChildPlanID: 22, ExecutionOrder: 1})
			},
			planID: 20,
			expectedPlan: &models.Plan{
				Model:       gorm.Model{ID: 20},
				Name:        "Grandparent Plan",
				ContentType: models.PlanContentTypeSubPlans,
				SubPlans: []models.SubPlan{
					{
						ParentPlanID:   20,
						ChildPlanID:    21,
						ExecutionOrder: 1,
						ChildPlan: &models.Plan{
							Model:       gorm.Model{ID: 21},
							Name:        "Parent Plan",
							ContentType: models.PlanContentTypeSubPlans,
							SubPlans: []models.SubPlan{
								{
									ParentPlanID:   21,
									ChildPlanID:    22,
									ExecutionOrder: 1,
									ChildPlan: &models.Plan{
										Model:       gorm.Model{ID: 22},
										Name:        "Child Plan With Tasks",
										ContentType: models.PlanContentTypeTasks,
										Tasks: []models.Task{
											{PlanID: 22, Name: "Grandchild's Task", ExecutionOrder: 1},
										},
									},
								},
							},
						},
					},
				},
			},
			expectedError: "",
		},
		{
			name: "UnknownContentType",
			setupData: func(db *gorm.DB) {
				db.Create(&models.Plan{
					Model:       gorm.Model{ID: 30},
					Name:        "Unknown Type Plan",
					ContentType: "INVALID_TYPE",
				})
			},
			planID:        30,
			expectedPlan:  nil,
			expectedError: fmt.Sprintf("未知的计划内容类型: INVALID_TYPE; 计划ID: 30"),
		},
		// 新增场景：测试空的关联数据
		{
			name: "PlanWithTasksType_ButNoTasks",
			setupData: func(db *gorm.DB) {
				db.Create(&models.Plan{
					Model:       gorm.Model{ID: 50},
					Name:        "Plan with empty tasks",
					ContentType: models.PlanContentTypeTasks,
				})
			},
			planID: 50,
			expectedPlan: &models.Plan{
				Model:       gorm.Model{ID: 50},
				Name:        "Plan with empty tasks",
				ContentType: models.PlanContentTypeTasks,
				Tasks:       []models.Task{}, // 期望一个空的切片
			},
			expectedError: "",
		},
		// 新增场景：测试复杂的同级排序
		{
			name: "PlanWithSubPlans_ComplexSorting",
			setupData: func(db *gorm.DB) {
				db.Create(&models.Plan{Model: gorm.Model{ID: 60}, Name: "Main Plan For Sorting", ContentType: models.PlanContentTypeSubPlans})
				db.Create(&models.Plan{Model: gorm.Model{ID: 61}, Name: "SubPlan C", ContentType: models.PlanContentTypeTasks})
				db.Create(&models.Plan{Model: gorm.Model{ID: 62}, Name: "SubPlan A", ContentType: models.PlanContentTypeTasks})
				db.Create(&models.Plan{Model: gorm.Model{ID: 63}, Name: "SubPlan B", ContentType: models.PlanContentTypeTasks})
				// 故意打乱顺序插入
				db.Create(&models.SubPlan{ParentPlanID: 60, ChildPlanID: 61, ExecutionOrder: 3})
				db.Create(&models.SubPlan{ParentPlanID: 60, ChildPlanID: 62, ExecutionOrder: 1})
				db.Create(&models.SubPlan{ParentPlanID: 60, ChildPlanID: 63, ExecutionOrder: 2})
			},
			planID: 60,
			expectedPlan: &models.Plan{
				Model:       gorm.Model{ID: 60},
				Name:        "Main Plan For Sorting",
				ContentType: models.PlanContentTypeSubPlans,
				SubPlans: []models.SubPlan{
					{ParentPlanID: 60, ChildPlanID: 62, ExecutionOrder: 1, ChildPlan: &models.Plan{Model: gorm.Model{ID: 62}, Name: "SubPlan A", ContentType: models.PlanContentTypeTasks, Tasks: []models.Task{}}},
					{ParentPlanID: 60, ChildPlanID: 63, ExecutionOrder: 2, ChildPlan: &models.Plan{Model: gorm.Model{ID: 63}, Name: "SubPlan B", ContentType: models.PlanContentTypeTasks, Tasks: []models.Task{}}},
					{ParentPlanID: 60, ChildPlanID: 61, ExecutionOrder: 3, ChildPlan: &models.Plan{Model: gorm.Model{ID: 61}, Name: "SubPlan C", ContentType: models.PlanContentTypeTasks, Tasks: []models.Task{}}},
				},
			},
			expectedError: "",
		},
		// 新增场景：测试混合内容的子计划树
		{
			name: "PlanWithSubPlans_MixedContentTypes",
			setupData: func(db *gorm.DB) {
				db.Create(&models.Plan{Model: gorm.Model{ID: 70}, Name: "Mixed Main Plan", ContentType: models.PlanContentTypeSubPlans})
				db.Create(&models.Plan{Model: gorm.Model{ID: 71}, Name: "Child with SubPlans", ContentType: models.PlanContentTypeSubPlans})
				db.Create(&models.Plan{Model: gorm.Model{ID: 72}, Name: "Grandchild with Tasks", ContentType: models.PlanContentTypeTasks})
				db.Create(&models.Task{PlanID: 72, Name: "Grandchild's Task", ExecutionOrder: 1})
				db.Create(&models.Plan{Model: gorm.Model{ID: 73}, Name: "Child with Tasks", ContentType: models.PlanContentTypeTasks})
				db.Create(&models.Task{PlanID: 73, Name: "Child's Task", ExecutionOrder: 1})

				// 创建关联
				db.Create(&models.SubPlan{ParentPlanID: 70, ChildPlanID: 71, ExecutionOrder: 1}) // Main -> Child with SubPlans
				db.Create(&models.SubPlan{ParentPlanID: 70, ChildPlanID: 73, ExecutionOrder: 2}) // Main -> Child with Tasks
				db.Create(&models.SubPlan{ParentPlanID: 71, ChildPlanID: 72, ExecutionOrder: 1}) // Child with SubPlans -> Grandchild
			},
			planID: 70,
			expectedPlan: &models.Plan{
				Model:       gorm.Model{ID: 70},
				Name:        "Mixed Main Plan",
				ContentType: models.PlanContentTypeSubPlans,
				SubPlans: []models.SubPlan{
					{
						ParentPlanID: 70, ChildPlanID: 71, ExecutionOrder: 1,
						ChildPlan: &models.Plan{
							Model: gorm.Model{ID: 71}, Name: "Child with SubPlans", ContentType: models.PlanContentTypeSubPlans,
							SubPlans: []models.SubPlan{
								{ParentPlanID: 71, ChildPlanID: 72, ExecutionOrder: 1, ChildPlan: &models.Plan{
									Model: gorm.Model{ID: 72}, Name: "Grandchild with Tasks", ContentType: models.PlanContentTypeTasks,
									Tasks: []models.Task{{PlanID: 72, Name: "Grandchild's Task", ExecutionOrder: 1}},
								}},
							},
						},
					},
					{
						ParentPlanID: 70, ChildPlanID: 73, ExecutionOrder: 2,
						ChildPlan: &models.Plan{
							Model: gorm.Model{ID: 73}, Name: "Child with Tasks", ContentType: models.PlanContentTypeTasks,
							Tasks: []models.Task{{PlanID: 73, Name: "Child's Task", ExecutionOrder: 1}},
						},
					},
				},
			},
			expectedError: "",
		},
	}

	for _, tc := range testCases {
		t.Run(tc.name, func(t *testing.T) {
			db := setupTestDB(t)
			// 使用 defer 确保数据库连接在测试结束后关闭
			sqlDB, _ := db.DB()
			defer sqlDB.Close()

			tc.setupData(db)

			repo := repository.NewGormPlanRepository(db)
			plan, err := repo.GetPlanByID(tc.planID)

			if tc.expectedError != "" {
				assert.Error(t, err)
				assert.Contains(t, err.Error(), tc.expectedError)
				assert.Nil(t, plan)
			} else {
				assert.NoError(t, err)
				assert.NotNil(t, plan)

				// 在比较之前，清理实际结果和期望结果中所有不确定的、由数据库自动生成的字段
				cleanPlanForComparison(plan)
				cleanPlanForComparison(tc.expectedPlan)

				assert.Equal(t, tc.expectedPlan, plan)
			}
		})
	}
}

// cleanPlanForComparison 递归地重置 Plan 对象及其关联对象中由数据库自动生成的字段（如ID和时间戳），
// 以便在测试中断言它们与期望值相等。
func cleanPlanForComparison(p *models.Plan) {
	if p == nil {
		return
	}

	// 重置 Plan 自身的时间戳
	p.CreatedAt = time.Time{}
	p.UpdatedAt = time.Time{}
	p.DeletedAt = gorm.DeletedAt{}

	// 重置所有 Task 的自动生成字段
	for i := range p.Tasks {
		p.Tasks[i].ID = 0 // ID是自动生成的，必须重置为0才能与期望值匹配
		p.Tasks[i].CreatedAt = time.Time{}
		p.Tasks[i].UpdatedAt = time.Time{}
		p.Tasks[i].DeletedAt = gorm.DeletedAt{}
	}

	// 重置所有 SubPlan 的自动生成字段，并递归清理子计划
	for i := range p.SubPlans {
		p.SubPlans[i].ID = 0 // SubPlan 连接记录的ID也是自动生成的
		p.SubPlans[i].CreatedAt = time.Time{}
		p.SubPlans[i].UpdatedAt = time.Time{}
		p.SubPlans[i].DeletedAt = gorm.DeletedAt{}

		// 递归调用以清理嵌套的子计划
		cleanPlanForComparison(p.SubPlans[i].ChildPlan)
	}
}

// TestUpdatePlan_Validation 专注于测试 UpdatePlan 中前置检查逻辑的各种失败和成功场景。
func TestUpdatePlan_Validation(t *testing.T) {
	// 定义Go测试中使用的计划实体
	planA := &models.Plan{Model: gorm.Model{ID: 1}, Name: "Plan A", ContentType: models.PlanContentTypeSubPlans}
	planB := &models.Plan{Model: gorm.Model{ID: 2}, Name: "Plan B", ContentType: models.PlanContentTypeSubPlans}
	planC := &models.Plan{Model: gorm.Model{ID: 3}, Name: "Plan C", ContentType: models.PlanContentTypeSubPlans}
	planD := &models.Plan{Model: gorm.Model{ID: 4}, Name: "Plan D", ContentType: models.PlanContentTypeTasks}
	planNew := &models.Plan{Model: gorm.Model{ID: 0}, Name: "New Plan"} // ID为0的新计划

	type testCase struct {
		name          string
		setupDB       func(db *gorm.DB)
		buildInput    func() *models.Plan // 修改为构建函数
		expectedError string              // 保持 string 类型
	}

	testCases := []testCase{
		{
			name: "成功-合法的菱形依赖树",
			setupDB: func(db *gorm.DB) {
				db.Create(&models.Plan{Model: gorm.Model{ID: 1}})
				db.Create(&models.Plan{Model: gorm.Model{ID: 2}})
				db.Create(&models.Plan{Model: gorm.Model{ID: 3}})
				db.Create(&models.Plan{Model: gorm.Model{ID: 4}})
			},
			buildInput: func() *models.Plan {
				planD.ContentType = models.PlanContentTypeTasks
				planB.ContentType = models.PlanContentTypeSubPlans
				planB.SubPlans = []models.SubPlan{{ChildPlanID: 4, ChildPlan: planD}}
				planC.ContentType = models.PlanContentTypeSubPlans
				planC.SubPlans = []models.SubPlan{{ChildPlanID: 4, ChildPlan: planD}}
				planA.ContentType = models.PlanContentTypeSubPlans
				planA.SubPlans = []models.SubPlan{
					{ChildPlanID: 2, ChildPlan: planB, ExecutionOrder: 1},
					{ChildPlanID: 3, ChildPlan: planC, ExecutionOrder: 2},
				}
				return planA
			},
			expectedError: "", // 期望没有错误
		},
		{
			name:          "错误-根节点ID为零",
			setupDB:       func(db *gorm.DB) {},
			buildInput:    func() *models.Plan { return planNew },
			expectedError: repository.ErrUpdateWithInvalidRoot.Error(),
		},
		{
			name: "错误-子计划ID为零",
			setupDB: func(db *gorm.DB) {
				db.Create(&models.Plan{Model: gorm.Model{ID: 1}})
			},
			buildInput: func() *models.Plan {
				planA.ContentType = models.PlanContentTypeSubPlans
				planA.SubPlans = []models.SubPlan{{ChildPlan: planNew}}
				return planA
			},
			expectedError: repository.ErrNewSubPlanInUpdate.Error(),
		},
		{
			name: "错误-节点在数据库中不存在",
			setupDB: func(db *gorm.DB) {
				db.Create(&models.Plan{Model: gorm.Model{ID: 1}})
				db.Create(&models.Plan{Model: gorm.Model{ID: 2}})
			},
			buildInput: func() *models.Plan {
				planA.ContentType = models.PlanContentTypeSubPlans
				planA.SubPlans = []models.SubPlan{
					{ChildPlanID: 2, ChildPlan: planB, ExecutionOrder: 1},
					{ChildPlanID: 3, ChildPlan: planC, ExecutionOrder: 2}, // C 不存在
				}
				return planA
			},
			expectedError: repository.ErrNodeDoesNotExist.Error(),
		},
		{
			name: "错误-简单循环引用(A->B->A)",
			setupDB: func(db *gorm.DB) {
				db.Create(&models.Plan{Model: gorm.Model{ID: 1}})
				db.Create(&models.Plan{Model: gorm.Model{ID: 2}})
			},
			buildInput: func() *models.Plan {
				planA.ContentType = models.PlanContentTypeSubPlans
				planA.SubPlans = []models.SubPlan{{ChildPlanID: 2, ChildPlan: planB}}
				planB.ContentType = models.PlanContentTypeSubPlans
				planB.SubPlans = []models.SubPlan{{ChildPlanID: 1, ChildPlan: planA}}
				return planA
			},
			expectedError: "检测到循环引用：计划 (ID: 1)",
		},
		{
			name: "错误-复杂循环引用(A->B->C->A)",
			setupDB: func(db *gorm.DB) {
				db.Create(&models.Plan{Model: gorm.Model{ID: 1}})
				db.Create(&models.Plan{Model: gorm.Model{ID: 2}})
				db.Create(&models.Plan{Model: gorm.Model{ID: 3}})
			},
			buildInput: func() *models.Plan {
				planA.ContentType = models.PlanContentTypeSubPlans
				planA.SubPlans = []models.SubPlan{{ChildPlanID: 2, ChildPlan: planB}}
				planB.ContentType = models.PlanContentTypeSubPlans
				planB.SubPlans = []models.SubPlan{{ChildPlanID: 3, ChildPlan: planC}}
				planC.ContentType = models.PlanContentTypeSubPlans
				planC.SubPlans = []models.SubPlan{{ChildPlanID: 1, ChildPlan: planA}}
				return planA
			},
			expectedError: "检测到循环引用：计划 (ID: 1)",
		},
		{
			name: "错误-自引用(A->A)",
			setupDB: func(db *gorm.DB) {
				db.Create(&models.Plan{Model: gorm.Model{ID: 1}})
			},
			buildInput: func() *models.Plan {
				planA.ContentType = models.PlanContentTypeSubPlans
				planA.SubPlans = []models.SubPlan{{ChildPlanID: 1, ChildPlan: planA}}
				return planA
			},
			expectedError: "检测到循环引用：计划 (ID: 1)",
		},
		{
			name: "错误-根节点内容混合",
			setupDB: func(db *gorm.DB) {
				db.Create(&models.Plan{Model: gorm.Model{ID: 1}})
				db.Create(&models.Plan{Model: gorm.Model{ID: 2}})
			},
			buildInput: func() *models.Plan {
				planA.ContentType = models.PlanContentTypeSubPlans
				planA.SubPlans = []models.SubPlan{{ChildPlanID: 2, ChildPlan: planB}}
				planA.Tasks = []models.Task{{Name: "A's Task"}}
				return planA
			},
			expectedError: "不能同时包含任务和子计划",
		},
		{
			name: "错误-任务执行顺序重复",
			setupDB: func(db *gorm.DB) {
				db.Create(&models.Plan{Model: gorm.Model{ID: 1}})
			},
			buildInput: func() *models.Plan {
				planA.ContentType = models.PlanContentTypeTasks
				planA.Tasks = []models.Task{
					{Name: "Task 1", ExecutionOrder: 1},
					{Name: "Task 2", ExecutionOrder: 1}, // 重复的顺序
				}
				return planA
			},
			expectedError: fmt.Sprintf("任务执行顺序重复: %d", 1),
		}, {
			name: "错误-子计划执行顺序重复",
			setupDB: func(db *gorm.DB) {
				db.Create(&models.Plan{Model: gorm.Model{ID: 1}})
				db.Create(&models.Plan{Model: gorm.Model{ID: 10}})
				db.Create(&models.Plan{Model: gorm.Model{ID: 11}})
			},
			buildInput: func() *models.Plan {
				planA.ContentType = models.PlanContentTypeSubPlans
				planA.SubPlans = []models.SubPlan{
					{ChildPlanID: 10, ChildPlan: &models.Plan{Model: gorm.Model{ID: 10}}, ExecutionOrder: 1},
					{ChildPlanID: 11, ChildPlan: &models.Plan{Model: gorm.Model{ID: 11}}, ExecutionOrder: 1}, // 重复的顺序
				}
				return planA
			},
			expectedError: fmt.Sprintf("子计划执行顺序重复: %d", 1),
		},
	}

	for _, tc := range testCases {
		t.Run(tc.name, func(t *testing.T) {
			// 1. 为每个测试用例重置基础对象的状态
			*planA = models.Plan{Model: gorm.Model{ID: 1}, Name: "Plan A"}
			*planB = models.Plan{Model: gorm.Model{ID: 2}, Name: "Plan B"}
			*planC = models.Plan{Model: gorm.Model{ID: 3}, Name: "Plan C"}
			*planD = models.Plan{Model: gorm.Model{ID: 4}, Name: "Plan D"}
			*planNew = models.Plan{Model: gorm.Model{ID: 0}, Name: "New Plan"}

			// 2. 设置数据库
			db := setupTestDB(t)
			sqlDB, _ := db.DB()
			defer sqlDB.Close()
			tc.setupDB(db)

			// 3. 在对象重置后，构建本次测试需要的输入结构
			input := tc.buildInput()

			// 4. 执行测试
			repo := repository.NewGormPlanRepository(db)
			err := repo.UpdatePlan(input)

			// 5. 断言结果
			if tc.expectedError != "" {
				assert.Error(t, err)
				assert.Contains(t, err.Error(), tc.expectedError)
			} else {
				assert.NoError(t, err)
			}
		})
	}
}

// TestUpdatePlan_Reconciliation 专注于测试 UpdatePlan 成功执行后，数据库状态是否与预期一致。
func TestUpdatePlan_Reconciliation(t *testing.T) {
	type testCase struct {
		name       string
		setupDB    func(db *gorm.DB) (rootPlanID uint)
		buildInput func(db *gorm.DB) *models.Plan
		verifyDB   func(t *testing.T, db *gorm.DB, rootPlanID uint)
	}

	testCases := []testCase{
		{
			name: "任务协调-新增一个任务",
			setupDB: func(db *gorm.DB) uint {
				plan := models.Plan{Model: gorm.Model{ID: 1}, Name: "Plan With Tasks", ContentType: models.PlanContentTypeTasks}
				db.Create(&plan)
				db.Create(&models.Task{PlanID: 1, Name: "Task 1", ExecutionOrder: 1})
				return 1
			},
			buildInput: func(db *gorm.DB) *models.Plan {
				return &models.Plan{
					Model:       gorm.Model{ID: 1},
					Name:        "Plan With Tasks",
					ContentType: models.PlanContentTypeTasks,
					Tasks: []models.Task{
						{Model: gorm.Model{ID: 1}, PlanID: 1, Name: "Task 1", ExecutionOrder: 1},
						{Name: "New Task 2", ExecutionOrder: 2},
					},
				}
			},
			verifyDB: func(t *testing.T, db *gorm.DB, rootPlanID uint) {
				var finalPlan models.Plan
				db.Preload("Tasks").First(&finalPlan, rootPlanID)
				assert.Len(t, finalPlan.Tasks, 2)
				assert.Equal(t, "New Task 2", finalPlan.Tasks[1].Name)
			},
		},
		{
			name: "任务协调-删除一个任务",
			setupDB: func(db *gorm.DB) uint {
				plan := models.Plan{Model: gorm.Model{ID: 1}, Name: "Plan With Tasks", ContentType: models.PlanContentTypeTasks}
				db.Create(&plan)
				db.Create(&models.Task{Model: gorm.Model{ID: 10}, PlanID: 1, Name: "Task 1", ExecutionOrder: 1})
				db.Create(&models.Task{Model: gorm.Model{ID: 11}, PlanID: 1, Name: "Task to Delete", ExecutionOrder: 2})
				return 1
			},
			buildInput: func(db *gorm.DB) *models.Plan {
				return &models.Plan{
					Model:       gorm.Model{ID: 1},
					Name:        "Plan With Tasks",
					ContentType: models.PlanContentTypeTasks,
					Tasks: []models.Task{
						{Model: gorm.Model{ID: 10}, PlanID: 1, Name: "Task 1", ExecutionOrder: 1},
					},
				}
			},
			verifyDB: func(t *testing.T, db *gorm.DB, rootPlanID uint) {
				var tasks []models.Task
				db.Where("plan_id = ?", rootPlanID).Find(&tasks)
				assert.Len(t, tasks, 1)
				var count int64
				db.Model(&models.Task{}).Where("id = ?", 11).Count(&count)
				assert.Equal(t, int64(0), count, "被删除的任务不应再存在")
			},
		},
		{
			name: "任务协调-更新并重排序任务",
			setupDB: func(db *gorm.DB) uint {
				plan := models.Plan{Model: gorm.Model{ID: 1}, Name: "Plan", ContentType: models.PlanContentTypeTasks}
				db.Create(&plan)
				db.Create(&models.Task{Model: gorm.Model{ID: 10}, PlanID: 1, Name: "A", ExecutionOrder: 1})
				db.Create(&models.Task{Model: gorm.Model{ID: 11}, PlanID: 1, Name: "B", ExecutionOrder: 2})
				return 1
			},
			buildInput: func(db *gorm.DB) *models.Plan {
				return &models.Plan{
					Model:       gorm.Model{ID: 1},
					Name:        "Plan",
					ContentType: models.PlanContentTypeTasks,
					Tasks: []models.Task{
						{Model: gorm.Model{ID: 11}, PlanID: 1, Name: "B Updated", ExecutionOrder: 1},
						{Model: gorm.Model{ID: 10}, PlanID: 1, Name: "A", ExecutionOrder: 2},
					},
				}
			},
			verifyDB: func(t *testing.T, db *gorm.DB, rootPlanID uint) {
				var finalPlan models.Plan
				db.Preload("Tasks", func(db *gorm.DB) *gorm.DB {
					return db.Order("execution_order")
				}).First(&finalPlan, rootPlanID)
				assert.Len(t, finalPlan.Tasks, 2)
				assert.Equal(t, "B Updated", finalPlan.Tasks[0].Name)
				assert.Equal(t, uint(11), finalPlan.Tasks[0].ID)
			},
		},
		{
			name: "任务协调-混沌的同步操作(增删改重排)",
			setupDB: func(db *gorm.DB) uint {
				plan := models.Plan{Model: gorm.Model{ID: 1}, Name: "Plan", ContentType: models.PlanContentTypeTasks}
				db.Create(&plan)
				db.Create(&models.Task{Model: gorm.Model{ID: 10}, PlanID: 1, Name: "Task 1 (Original)", ExecutionOrder: 1})
				db.Create(&models.Task{Model: gorm.Model{ID: 11}, PlanID: 1, Name: "Task 2 (To Be Deleted)", ExecutionOrder: 2})
				db.Create(&models.Task{Model: gorm.Model{ID: 12}, PlanID: 1, Name: "Task 3 (Original)", ExecutionOrder: 3})
				return 1
			},
			buildInput: func(db *gorm.DB) *models.Plan {
				return &models.Plan{
					Model:       gorm.Model{ID: 1},
					Name:        "Plan",
					ContentType: models.PlanContentTypeTasks,
					Tasks: []models.Task{
						// T4 (新) -> T3 (不变) -> T1 (更新)
						{Name: "Task 4 (New)", ExecutionOrder: 1},
						{Model: gorm.Model{ID: 12}, PlanID: 1, Name: "Task 3 (Original)", ExecutionOrder: 2},
						{Model: gorm.Model{ID: 10}, PlanID: 1, Name: "Task 1 (Updated)", ExecutionOrder: 3},
					},
				}
			},
			verifyDB: func(t *testing.T, db *gorm.DB, rootPlanID uint) {
				var finalPlan models.Plan
				db.Preload("Tasks", func(db *gorm.DB) *gorm.DB {
					return db.Order("execution_order")
				}).First(&finalPlan, rootPlanID)

				// 验证最终数量
				assert.Len(t, finalPlan.Tasks, 3)

				// 验证被删除的 T2 不存在
				var count int64
				db.Model(&models.Task{}).Where("id = ?", 11).Count(&count)
				assert.Equal(t, int64(0), count)

				// 验证顺序和内容
				assert.Equal(t, "Task 4 (New)", finalPlan.Tasks[0].Name)
				assert.Equal(t, "Task 3 (Original)", finalPlan.Tasks[1].Name)
				assert.Equal(t, "Task 1 (Updated)", finalPlan.Tasks[2].Name)
			},
		},
		{
			name: "子计划协调-新增一个关联",
			setupDB: func(db *gorm.DB) uint {
				db.Create(&models.Plan{Model: gorm.Model{ID: 1}, Name: "Parent", ContentType: models.PlanContentTypeSubPlans})
				db.Create(&models.Plan{Model: gorm.Model{ID: 2}, Name: "Existing Child"})
				return 1
			},
			buildInput: func(db *gorm.DB) *models.Plan {
				return &models.Plan{
					Model:       gorm.Model{ID: 1},
					Name:        "Parent",
					ContentType: models.PlanContentTypeSubPlans,
					SubPlans:    []models.SubPlan{{ChildPlanID: 2}},
				}
			},
			verifyDB: func(t *testing.T, db *gorm.DB, rootPlanID uint) {
				var links []models.SubPlan
				db.Where("parent_plan_id = ?", rootPlanID).Find(&links)
				assert.Len(t, links, 1)
				assert.Equal(t, uint(2), links[0].ChildPlanID)
			},
		},
		{
			name: "子计划协调-删除一个关联",
			setupDB: func(db *gorm.DB) uint {
				db.Create(&models.Plan{Model: gorm.Model{ID: 1}, Name: "Parent", ContentType: models.PlanContentTypeSubPlans})
				db.Create(&models.Plan{Model: gorm.Model{ID: 2}, Name: "Child To Unlink"})
				db.Create(&models.SubPlan{ParentPlanID: 1, ChildPlanID: 2})
				return 1
			},
			buildInput: func(db *gorm.DB) *models.Plan {
				return &models.Plan{
					Model:       gorm.Model{ID: 1},
					Name:        "Parent",
					ContentType: models.PlanContentTypeSubPlans,
					SubPlans:    []models.SubPlan{},
				}
			},
			verifyDB: func(t *testing.T, db *gorm.DB, rootPlanID uint) {
				var linkCount int64
				db.Model(&models.SubPlan{}).Where("parent_plan_id = ?", rootPlanID).Count(&linkCount)
				assert.Equal(t, int64(0), linkCount)

				var planCount int64
				db.Model(&models.Plan{}).Where("id = ?", 2).Count(&planCount)
				assert.Equal(t, int64(1), planCount, "子计划本身不应被删除")
			},
		},
		{
			name: "类型转换-从任务切换到子计划",
			setupDB: func(db *gorm.DB) uint {
				plan := models.Plan{Model: gorm.Model{ID: 1}, Name: "Plan", ContentType: models.PlanContentTypeTasks}
				db.Create(&plan)
				db.Create(&models.Task{PlanID: 1, Name: "Old Task"})
				db.Create(&models.Plan{Model: gorm.Model{ID: 10}, Name: "New Child"})
				return 1
			},
			buildInput: func(db *gorm.DB) *models.Plan {
				return &models.Plan{
					Model:       gorm.Model{ID: 1},
					Name:        "Plan",
					ContentType: models.PlanContentTypeSubPlans,
					SubPlans:    []models.SubPlan{{ChildPlanID: 10}},
				}
			},
			verifyDB: func(t *testing.T, db *gorm.DB, rootPlanID uint) {
				var taskCount int64
				db.Model(&models.Task{}).Where("plan_id = ?", rootPlanID).Count(&taskCount)
				assert.Equal(t, int64(0), taskCount, "旧任务应被清理")

				var linkCount int64
				db.Model(&models.SubPlan{}).Where("parent_plan_id = ?", rootPlanID).Count(&linkCount)
				assert.Equal(t, int64(1), linkCount, "新关联应被创建")
			},
		},
		{
			name: "类型转换-从子计划切换到任务",
			setupDB: func(db *gorm.DB) uint {
				db.Create(&models.Plan{Model: gorm.Model{ID: 1}, Name: "Plan", ContentType: models.PlanContentTypeSubPlans})
				db.Create(&models.Plan{Model: gorm.Model{ID: 10}, Name: "Old Child"})
				db.Create(&models.SubPlan{ParentPlanID: 1, ChildPlanID: 10})
				return 1
			},
			buildInput: func(db *gorm.DB) *models.Plan {
				return &models.Plan{
					Model:       gorm.Model{ID: 1},
					Name:        "Plan",
					ContentType: models.PlanContentTypeTasks, // 类型变更
					Tasks:       []models.Task{{Name: "New Task"}},
				}
			},
			verifyDB: func(t *testing.T, db *gorm.DB, rootPlanID uint) {
				var linkCount int64
				db.Model(&models.SubPlan{}).Where("parent_plan_id = ?", rootPlanID).Count(&linkCount)
				assert.Equal(t, int64(0), linkCount, "旧的子计划关联应被清理")

				var taskCount int64
				db.Model(&models.Task{}).Where("plan_id = ?", rootPlanID).Count(&taskCount)
				assert.Equal(t, int64(1), taskCount, "新任务应被创建")
			},
		},
		{
			name: "递归更新-深层节点的变更",
			setupDB: func(db *gorm.DB) uint {
				db.Create(&models.Plan{Model: gorm.Model{ID: 1}, Name: "A", ContentType: models.PlanContentTypeSubPlans})
				db.Create(&models.Plan{Model: gorm.Model{ID: 2}, Name: "B", ContentType: models.PlanContentTypeSubPlans})
				db.Create(&models.Plan{Model: gorm.Model{ID: 3}, Name: "C", ContentType: models.PlanContentTypeTasks})
				db.Create(&models.SubPlan{Model: gorm.Model{ID: 101}, ParentPlanID: 1, ChildPlanID: 2, ExecutionOrder: 1})
				db.Create(&models.SubPlan{Model: gorm.Model{ID: 102}, ParentPlanID: 2, ChildPlanID: 3, ExecutionOrder: 1})
				return 1
			},
			buildInput: func(db *gorm.DB) *models.Plan {
				planC := &models.Plan{Model: gorm.Model{ID: 3}, Name: "C Updated", ContentType: models.PlanContentTypeTasks}
				planB := &models.Plan{
					Model:       gorm.Model{ID: 2},
					Name:        "B",
					ContentType: models.PlanContentTypeSubPlans,
					SubPlans:    []models.SubPlan{{Model: gorm.Model{ID: 102}, ParentPlanID: 2, ChildPlanID: 3, ChildPlan: planC, ExecutionOrder: 2}},
				}
				planA := &models.Plan{
					Model:       gorm.Model{ID: 1},
					Name:        "A Updated",
					ContentType: models.PlanContentTypeSubPlans,
					SubPlans:    []models.SubPlan{{Model: gorm.Model{ID: 101}, ParentPlanID: 1, ChildPlanID: 2, ChildPlan: planB, ExecutionOrder: 1}},
				}
				return planA
			},
			verifyDB: func(t *testing.T, db *gorm.DB, rootPlanID uint) {
				var finalA, finalC models.Plan
				var finalLinkB models.SubPlan

				db.First(&finalA, 1)
				assert.Equal(t, "A Updated", finalA.Name)

				db.First(&finalLinkB, 102)
				assert.Equal(t, 2, finalLinkB.ExecutionOrder)

				db.First(&finalC, 3)
				assert.Equal(t, "C Updated", finalC.Name)
			},
		},
		{
			name: "递归更新-深层节点的类型转换(C从SubPlans变为Tasks)",
			setupDB: func(db *gorm.DB) uint {
				// 初始状态: A -> B -> C -> D
				db.Create(&models.Plan{Model: gorm.Model{ID: 1}, Name: "A", ContentType: models.PlanContentTypeSubPlans})
				db.Create(&models.Plan{Model: gorm.Model{ID: 2}, Name: "B", ContentType: models.PlanContentTypeSubPlans})
				db.Create(&models.Plan{Model: gorm.Model{ID: 3}, Name: "C", ContentType: models.PlanContentTypeSubPlans}) // C的初始类型
				db.Create(&models.Plan{Model: gorm.Model{ID: 4}, Name: "D"})
				db.Create(&models.SubPlan{ParentPlanID: 1, ChildPlanID: 2})
				db.Create(&models.SubPlan{ParentPlanID: 2, ChildPlanID: 3})
				db.Create(&models.SubPlan{Model: gorm.Model{ID: 99}, ParentPlanID: 3, ChildPlanID: 4}) // C->D 的关联
				return 1
			},
			buildInput: func(db *gorm.DB) *models.Plan {
				// 更新操作: C的类型变为Tasks，并增加一个新Task
				planC := &models.Plan{
					Model:       gorm.Model{ID: 3},
					Name:        "C",
					ContentType: models.PlanContentTypeTasks, // 类型变更
					Tasks:       []models.Task{{Name: "C's New Task"}},
				}
				planB := &models.Plan{
					Model:       gorm.Model{ID: 2},
					Name:        "B",
					ContentType: models.PlanContentTypeSubPlans,
					SubPlans:    []models.SubPlan{{ChildPlanID: 3, ChildPlan: planC}},
				}
				planA := &models.Plan{
					Model:       gorm.Model{ID: 1},
					Name:        "A",
					ContentType: models.PlanContentTypeSubPlans,
					SubPlans:    []models.SubPlan{{ChildPlanID: 2, ChildPlan: planB}},
				}
				return planA
			},
			verifyDB: func(t *testing.T, db *gorm.DB, rootPlanID uint) {
				// 1. 验证 C->D 的旧关联已被删除
				var linkCount int64
				db.Model(&models.SubPlan{}).Where("id = ?", 99).Count(&linkCount)
				assert.Equal(t, int64(0), linkCount, "C的旧子计划关联应被清理")

				// 2. 验证 C 的新Task已被创建
				var task models.Task
				err := db.Where("plan_id = ?", 3).First(&task).Error
				assert.NoError(t, err, "C的新任务应该被创建")
				assert.Equal(t, "C's New Task", task.Name)

				// 3. 验证 D 计划本身依然存在
				var planDCount int64
				db.Model(&models.Plan{}).Where("id = ?", 4).Count(&planDCount)
				assert.Equal(t, int64(1), planDCount, "计划D本身不应被删除")
			},
		}, {
			name: "递归更新-中间层分支替换(A->B变为A->D)",
			setupDB: func(db *gorm.DB) uint {
				// 初始状态: A -> B -> C
				db.Create(&models.Plan{Model: gorm.Model{ID: 1}, Name: "A", ContentType: models.PlanContentTypeSubPlans})
				db.Create(&models.Plan{Model: gorm.Model{ID: 2}, Name: "B", ContentType: models.PlanContentTypeSubPlans})
				db.Create(&models.Plan{Model: gorm.Model{ID: 3}, Name: "C"})
				db.Create(&models.SubPlan{Model: gorm.Model{ID: 101}, ParentPlanID: 1, ChildPlanID: 2}) // A->B
				db.Create(&models.SubPlan{ParentPlanID: 2, ChildPlanID: 3})                             // B->C

				// 准备用于替换的分支: D -> E
				db.Create(&models.Plan{Model: gorm.Model{ID: 4}, Name: "D", ContentType: models.PlanContentTypeSubPlans})
				db.Create(&models.Plan{Model: gorm.Model{ID: 5}, Name: "E"})
				db.Create(&models.SubPlan{ParentPlanID: 4, ChildPlanID: 5}) // D->E
				return 1
			},
			buildInput: func(db *gorm.DB) *models.Plan {
				// 更新操作: A的子计划从 B 替换为 D
				planE := &models.Plan{Model: gorm.Model{ID: 5}, Name: "E Updated"} // 同时更新深层节点
				planD := &models.Plan{
					Model:       gorm.Model{ID: 4},
					Name:        "D",
					ContentType: models.PlanContentTypeSubPlans,
					SubPlans:    []models.SubPlan{{ChildPlanID: 5, ChildPlan: planE}},
				}
				planA := &models.Plan{
					Model:       gorm.Model{ID: 1},
					Name:        "A",
					ContentType: models.PlanContentTypeSubPlans,
					SubPlans:    []models.SubPlan{{ChildPlanID: 4, ChildPlan: planD}}, // 新关联 A->D
				}
				return planA
			},
			verifyDB: func(t *testing.T, db *gorm.DB, rootPlanID uint) {
				// 1. 验证 A->B 的旧关联已被删除
				var linkCount int64
				db.Model(&models.SubPlan{}).Where("id = ?", 101).Count(&linkCount)
				assert.Equal(t, int64(0), linkCount, "A->B 的旧关联应被删除")

				// 2. 验证 A->D 的新关联已创建
				var newLink models.SubPlan
				err := db.Where("parent_plan_id = ? AND child_plan_id = ?", 1, 4).First(&newLink).Error
				assert.NoError(t, err, "A->D 的新关联应被创建")

				// 3. 验证 B, C, D, E 计划本身都依然存在
				var planCount int64
				db.Model(&models.Plan{}).Where("id IN ?", []uint{2, 3, 4, 5}).Count(&planCount)
				assert.Equal(t, int64(4), planCount, "所有被引用或解引用的计划本身都不应被删除")

				// 4. 验证对新分支深层节点的递归更新已生效
				var finalE models.Plan
				db.First(&finalE, 5)
				assert.Equal(t, "E Updated", finalE.Name)
			},
		},
		{
			name: "递归更新-菱形依赖下的冲突更新",
			setupDB: func(db *gorm.DB) uint {
				// 初始状态: A -> B -> D, A -> C -> D
				db.Create(&models.Plan{Model: gorm.Model{ID: 1}, Name: "A", ContentType: models.PlanContentTypeSubPlans})
				db.Create(&models.Plan{Model: gorm.Model{ID: 2}, Name: "B", ContentType: models.PlanContentTypeSubPlans})
				db.Create(&models.Plan{Model: gorm.Model{ID: 3}, Name: "C", ContentType: models.PlanContentTypeSubPlans})
				db.Create(&models.Plan{Model: gorm.Model{ID: 4}, Name: "D (Original)"}) // D的初始名字
				// 创建关联
				db.Create(&models.SubPlan{ParentPlanID: 1, ChildPlanID: 2, ExecutionOrder: 1}) // A->B
				db.Create(&models.SubPlan{ParentPlanID: 1, ChildPlanID: 3, ExecutionOrder: 2}) // A->C
				db.Create(&models.SubPlan{ParentPlanID: 2, ChildPlanID: 4})                    // B->D
				db.Create(&models.SubPlan{ParentPlanID: 3, ChildPlanID: 4})                    // C->D
				return 1
			},
			buildInput: func(db *gorm.DB) *models.Plan {
				// 在一次调用中，通过不同路径对 D 进行不同的更新
				planD_fromB := &models.Plan{Model: gorm.Model{ID: 4}, Name: "D (Updated from B)"}
				planD_fromC := &models.Plan{Model: gorm.Model{ID: 4}, Name: "D (Updated from C)"}

				planB := &models.Plan{
					Model:       gorm.Model{ID: 2},
					ContentType: models.PlanContentTypeSubPlans,
					SubPlans:    []models.SubPlan{{ChildPlanID: 4, ChildPlan: planD_fromB}},
				}
				planC := &models.Plan{
					Model:       gorm.Model{ID: 3},
					ContentType: models.PlanContentTypeSubPlans,
					SubPlans:    []models.SubPlan{{ChildPlanID: 4, ChildPlan: planD_fromC}},
				}
				planA := &models.Plan{
					Model:       gorm.Model{ID: 1},
					ContentType: models.PlanContentTypeSubPlans,
					SubPlans: []models.SubPlan{
						{ChildPlanID: 2, ChildPlan: planB, ExecutionOrder: 1},
						{ChildPlanID: 3, ChildPlan: planC, ExecutionOrder: 2}, // C 在 B 之后
					},
				}
				return planA
			},
			verifyDB: func(t *testing.T, db *gorm.DB, rootPlanID uint) {
				// 验证：D 的最终名字应该符合“最后一次更新获胜”的原则
				// 由于 planC 在 planB 之后被处理，D 的名字应该是 "D (Updated from C)"
				var finalD models.Plan
				db.First(&finalD, 4)
				assert.Equal(t, "D (Updated from C)", finalD.Name, "共享下游节点的更新应以后一次执行为准")

				// 确保所有关联依然存在
				var linkCount int64
				db.Model(&models.SubPlan{}).Where("child_plan_id = ?", 4).Count(&linkCount)
				assert.Equal(t, int64(2), linkCount, "D 的两个上游关联都应继续存在")
			},
		},
	}

	for _, tc := range testCases {
		t.Run(tc.name, func(t *testing.T) {
			db := setupTestDB(t)
			sqlDB, _ := db.DB()
			defer sqlDB.Close()

			rootID := tc.setupDB(db)
			input := tc.buildInput(db)

			repo := repository.NewGormPlanRepository(db)
			err := repo.UpdatePlan(input)
			assert.NoError(t, err)

			tc.verifyDB(t, db, rootID)
		})
	}
}

// createExistingPlan 辅助函数，用于在数据库中创建已存在的计划
func createExistingPlan(db *gorm.DB, name string, contentType models.PlanContentType) *models.Plan {
	plan := &models.Plan{
		Name:        name,
		ContentType: contentType,
	}
	db.Create(plan)
	return plan
}

func TestPlanRepository_Create(t *testing.T) {
	type testCase struct {
		name          string
		setupDB       func(db *gorm.DB)                                         // 准备数据库的初始状态
		inputPlan     *models.Plan                                              // 传入 Create 方法的计划对象
		expectedError error                                                     // 期望的错误类型
		verifyDB      func(t *testing.T, db *gorm.DB, createdPlan *models.Plan) // 验证数据库状态
	}

	testCases := []testCase{
		{
			name: "成功创建-只包含基本信息",
			setupDB: func(db *gorm.DB) {
				// 无需额外设置
			},
			inputPlan: &models.Plan{
				Name:        "简单计划",
				Description: "一个不包含任务或子计划的简单计划",
				ContentType: models.PlanContentTypeTasks, // 修改为有效的 ContentType
				Tasks:       []models.Task{},             // 明确为空任务列表
			},
			expectedError: nil,
			verifyDB: func(t *testing.T, db *gorm.DB, createdPlan *models.Plan) {
				assert.NotZero(t, createdPlan.ID, "创建后计划ID不应为0")
				var foundPlan models.Plan
				err := db.First(&foundPlan, createdPlan.ID).Error
				assert.NoError(t, err)
				assert.Equal(t, "简单计划", foundPlan.Name)
				assert.Equal(t, models.PlanContentTypeTasks, foundPlan.ContentType)
				var tasks []models.Task
				db.Where("plan_id = ?", createdPlan.ID).Find(&tasks)
				assert.Len(t, tasks, 0, "不应创建任何任务")
			},
		},
		{
			name: "成功创建-包含任务",
			setupDB: func(db *gorm.DB) {
				// 无需额外设置
			},
			inputPlan: &models.Plan{
				Name:        "任务计划",
				ContentType: models.PlanContentTypeTasks,
				Tasks: []models.Task{
					{Name: "任务A", ExecutionOrder: 1},
					{Name: "任务B", ExecutionOrder: 2},
				},
			},
			expectedError: nil,
			verifyDB: func(t *testing.T, db *gorm.DB, createdPlan *models.Plan) {
				assert.NotZero(t, createdPlan.ID, "计划ID不应为0")
				var foundPlan models.Plan
				db.Preload("Tasks").First(&foundPlan, createdPlan.ID)
				assert.Len(t, foundPlan.Tasks, 2, "应创建两个任务")
				assert.NotZero(t, foundPlan.Tasks[0].ID, "任务ID不应为0")
				assert.Equal(t, "任务A", foundPlan.Tasks[0].Name)
			},
		},
		{
			name: "成功创建-包含子计划关联",
			setupDB: func(db *gorm.DB) {
				// 预先创建子计划实体，使用有效的 ContentType
				createExistingPlan(db, "子计划1", models.PlanContentTypeTasks)
				createExistingPlan(db, "子计划2", models.PlanContentTypeTasks)
			},
			inputPlan: &models.Plan{
				Name:        "父计划",
				ContentType: models.PlanContentTypeSubPlans,
				SubPlans: []models.SubPlan{
					{ChildPlanID: 1, ExecutionOrder: 1, ChildPlan: &models.Plan{Model: gorm.Model{ID: 1}}}, // 关联已存在的子计划1
					{ChildPlanID: 2, ExecutionOrder: 2, ChildPlan: &models.Plan{Model: gorm.Model{ID: 2}}}, // 关联已存在的子计划2
				},
			},
			expectedError: nil,
			verifyDB: func(t *testing.T, db *gorm.DB, createdPlan *models.Plan) {
				assert.NotZero(t, createdPlan.ID, "创建后计划ID不应为0")

				// 直接查询 SubPlan 关联记录
				var foundSubPlanLinks []models.SubPlan
				err := db.Where("parent_plan_id = ?", createdPlan.ID).Find(&foundSubPlanLinks).Error
				assert.NoError(t, err)

				assert.Len(t, foundSubPlanLinks, 2, "应创建两个子计划关联")
				assert.NotZero(t, foundSubPlanLinks[0].ID, "子计划关联ID不应为0")
				assert.Equal(t, createdPlan.ID, foundSubPlanLinks[0].ParentPlanID)
				assert.Equal(t, uint(1), foundSubPlanLinks[0].ChildPlanID)
			},
		},
		{
			name: "失败-计划ID不为0",
			setupDB: func(db *gorm.DB) {
				// 无需额外设置
			},
			inputPlan: &models.Plan{
				Model: gorm.Model{ID: 100}, // ID不为0
				Name:  "无效计划",
			},
			expectedError: repository.ErrCreateWithNonZeroID,
			verifyDB: func(t *testing.T, db *gorm.DB, createdPlan *models.Plan) {
				// 验证数据库中没有创建该计划
				var count int64
				db.Model(&models.Plan{}).Where("id = ?", 100).Count(&count)
				assert.Equal(t, int64(0), count, "计划不应被创建")
			},
		},
		{
			name: "失败-同时包含任务和子计划",
			setupDB: func(db *gorm.DB) {
				createExistingPlan(db, "子计划", models.PlanContentTypeTasks) // 使用有效的 ContentType
			},
			inputPlan: &models.Plan{
				Name:        "混合内容计划",
				ContentType: models.PlanContentTypeTasks, // 声明为任务类型
				Tasks:       []models.Task{{Name: "任务A"}},
				SubPlans:    []models.SubPlan{{ChildPlanID: 1, ChildPlan: &models.Plan{Model: gorm.Model{ID: 1}}}}, // 但也包含子计划
			},
			expectedError: repository.ErrMixedContent,
			verifyDB: func(t *testing.T, db *gorm.DB, createdPlan *models.Plan) {
				// 验证数据库中没有创建该计划
				var count int64
				db.Model(&models.Plan{}).Where("name = ?", "混合内容计划").Count(&count)
				assert.Equal(t, int64(0), count, "计划不应被创建")
			},
		},
		{
			name: "失败-子计划ID为0",
			setupDB: func(db *gorm.DB) {
				// 无需额外设置
			},
			inputPlan: &models.Plan{
				Name:        "无效子计划关联",
				ContentType: models.PlanContentTypeSubPlans,
				SubPlans: []models.SubPlan{
					{ChildPlanID: 0, ChildPlan: &models.Plan{Model: gorm.Model{ID: 0}}}, // 子计划ID为0
				},
			},
			expectedError: repository.ErrSubPlanIDIsZeroOnCreate,
			verifyDB: func(t *testing.T, db *gorm.DB, createdPlan *models.Plan) {
				var count int64
				db.Model(&models.Plan{}).Where("name = ?", "无效子计划关联").Count(&count)
				assert.Equal(t, int64(0), count, "计划不应被创建")
			},
		},
		{
			name: "失败-子计划在数据库中不存在",
			setupDB: func(db *gorm.DB) {
				// 不创建ID为999的计划
			},
			inputPlan: &models.Plan{
				Name:        "不存在的子计划",
				ContentType: models.PlanContentTypeSubPlans,
				SubPlans: []models.SubPlan{
					{ChildPlanID: 999, ChildPlan: &models.Plan{Model: gorm.Model{ID: 999}}}, // 关联一个不存在的ID
				},
			},
			expectedError: repository.ErrNodeDoesNotExist,
			verifyDB: func(t *testing.T, db *gorm.DB, createdPlan *models.Plan) {
				var count int64
				db.Model(&models.Plan{}).Where("name = ?", "不存在的子计划").Count(&count)
				assert.Equal(t, int64(0), count, "计划不应被创建")
			},
		},
		{
			name: "失败-任务执行顺序重复",
			setupDB: func(db *gorm.DB) {
				// 无需额外设置
			},
			inputPlan: &models.Plan{
				Name:        "重复任务顺序计划",
				ContentType: models.PlanContentTypeTasks,
				Tasks: []models.Task{
					{Name: "Task 1", ExecutionOrder: 1},
					{Name: "Task 2", ExecutionOrder: 1}, // 重复的顺序
				},
			},
			expectedError: fmt.Errorf("任务执行顺序重复: %d", 1), // 假设 Create 方法会返回此错误
			verifyDB: func(t *testing.T, db *gorm.DB, createdPlan *models.Plan) {
				var count int64
				db.Model(&models.Plan{}).Where("name = ?", "重复任务顺序计划").Count(&count)
				assert.Equal(t, int64(0), count, "重复任务顺序的计划不应被创建")
			},
		},
		{
			name: "失败-子计划执行顺序重复",
			setupDB: func(db *gorm.DB) {
				createExistingPlan(db, "子计划A", models.PlanContentTypeTasks)
				createExistingPlan(db, "子计划B", models.PlanContentTypeTasks)
			},
			inputPlan: &models.Plan{
				Name:        "重复子计划顺序计划",
				ContentType: models.PlanContentTypeSubPlans,
				SubPlans: []models.SubPlan{
					{ChildPlanID: 1, ExecutionOrder: 1},
					{ChildPlanID: 2, ExecutionOrder: 1}, // 重复的顺序
				},
			},
			expectedError: fmt.Errorf("子计划执行顺序重复: %d", 1), // 假设 Create 方法会返回此错误
			verifyDB: func(t *testing.T, db *gorm.DB, createdPlan *models.Plan) {
				var count int64
				db.Model(&models.Plan{}).Where("name = ?", "重复子计划顺序计划").Count(&count)
				assert.Equal(t, int64(0), count, "重复子计划顺序的计划不应被创建")
			},
		},
	}

	for _, tc := range testCases {
		t.Run(tc.name, func(t *testing.T) {
			db := setupTestDB(t)
			repo := repository.NewGormPlanRepository(db)

			// 准备数据库状态
			tc.setupDB(db)

			// 执行 Create 操作
			err := repo.Create(tc.inputPlan)

			// 断言错误
			if tc.expectedError != nil {
				assert.Error(t, err)
				// 使用 Contains 检查错误信息，因为 fmt.Errorf 会创建新的错误实例
				assert.Contains(t, err.Error(), tc.expectedError.Error())
			} else {
				assert.NoError(t, err)
			}

			// 验证数据库状态
			tc.verifyDB(t, db, tc.inputPlan)
		})
	}
}