package repository_test

import (
	"errors"
	"testing"

	"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")
			}
		})
	}
}