package infrastructure

import (
	"approveflow/app/provider/database_connect"
	InstanceModule "approveflow/app/provider/flow_instance"
	InstanceModel "approveflow/app/provider/flow_instance/model"
	"context"
	"github.com/Superdanda/hade/framework"
	"github.com/Superdanda/hade/framework/contract"
	"github.com/Superdanda/hade/framework/provider/repository"
	"gorm.io/gorm"
)

type InstanceRepositoryImpl struct {
	container framework.Container
	db        *gorm.DB
	contract.OrmRepository[InstanceModel.ApprovalInstance, int64]
	InstanceModule.FlowInstanceRepository
}

func (u *InstanceRepositoryImpl) GetGenericRepository() contract.GenericRepository[InstanceModel.ApprovalInstance, int64] {
	repositoryService := u.container.MustMake(contract.RepositoryKey).(contract.RepositoryService)
	return repositoryService.GetGenericRepositoryByKey(InstanceModule.InstanceRepositoryKey).(contract.GenericRepository[InstanceModel.ApprovalInstance, int64])
}

func NewOrmInstanceRepositoryImplAndRegister(container framework.Container) {
	// 获取必要的服务对象
	connectService := container.MustMake(database_connect.DatabaseConnectKey).(database_connect.Service)
	infrastructureService := container.MustMake(contract.InfrastructureKey).(contract.InfrastructureService)
	repositoryService := container.MustMake(contract.RepositoryKey).(contract.RepositoryService)

	connect := connectService.DefaultDatabaseConnect()
	InstanceRepositoryOrmService := &InstanceRepositoryImpl{container: container, db: connect}
	infrastructureService.RegisterOrmRepository(InstanceModule.InstanceRepositoryKey, InstanceRepositoryOrmService)

	// 注册通用仓储对象
	repository.RegisterRepository[InstanceModel.ApprovalInstance, int64](repositoryService, InstanceModule.InstanceRepositoryKey, InstanceRepositoryOrmService)
}

func (u *InstanceRepositoryImpl) SaveToDB(entity *InstanceModel.ApprovalInstance) error {
	// 先保存 ApprovalFlow 本身
	if entity.ID != 0 {
		// 使用FullSaveAssociations 方法来确保模型的整体状态，包括其所有关联都反映在了数据库中，从在应用中保持数据的完整性和一致性
		return u.db.Session(&gorm.Session{FullSaveAssociations: true}).Updates(entity).Error
	}
	return u.db.Save(entity).Error
}

func (u *InstanceRepositoryImpl) FindByIDFromDB(id int64) (*InstanceModel.ApprovalInstance, error) {
	entity := &InstanceModel.ApprovalInstance{}
	err := u.db.Preload("CurrentStepIDs").Preload("StatusEvents").Preload("Steps").Preload("Steps.StatusEvents").Preload("Steps.Records").Preload("Steps.InstancePathConfigs").First(entity, id).Error
	return entity, err
}

func (u *InstanceRepositoryImpl) FindByIDsFromDB(ids []int64) ([]*InstanceModel.ApprovalInstance, error) {
	var entities []*InstanceModel.ApprovalInstance
	err := u.db.Where("id IN ?", ids).Preload("StatusEvents").Preload("CurrentStepIDs").Preload("Steps").Preload("Steps.StatusEvents").Preload("Steps.Records").Preload("Steps.InstancePathConfigs").Find(&entities).Error
	return entities, err
}

func (u *InstanceRepositoryImpl) GetPrimaryKey(entity *InstanceModel.ApprovalInstance) int64 {
	return entity.ID
}

func (u *InstanceRepositoryImpl) GetBaseField() string {
	return InstanceModule.FlowInstanceKey
}

func (u *InstanceRepositoryImpl) GetFieldQueryFunc(fieldName string) (func(value string) ([]*InstanceModel.ApprovalInstance, error), bool) {
	switch fieldName {
	// 根据您的实际情况添加字段查询函数
	default:
		return nil, false
	}
}

func (u *InstanceRepositoryImpl) GetFieldInQueryFunc(fieldName string) (func(values []string) ([]*InstanceModel.ApprovalInstance, error), bool) {
	switch fieldName {
	// 根据您的实际情况添加字段批量查询函数
	default:
		return nil, false
	}
}

func (u *InstanceRepositoryImpl) GetFieldValueFunc(fieldName string) (func(entity *InstanceModel.ApprovalInstance) string, bool) {
	switch fieldName {
	// 根据您的实际情况添加获取字段值的函数
	default:
		return nil, false
	}
}

// SaveInstance 保存审批流程实例
func (u *InstanceRepositoryImpl) SaveInstance(ctx context.Context, flow *InstanceModel.ApprovalInstance) error {
	return u.GetGenericRepository().Save(ctx, flow)
}

// GetInstanceByID 根据流程 ID 获取审批流程实例
func (u *InstanceRepositoryImpl) GetInstanceByID(ctx context.Context, id int64) (*InstanceModel.ApprovalInstance, error) {
	return u.GetGenericRepository().FindByID(ctx, id)
}

// GetInstancePage 实例分页查询
func (u *InstanceRepositoryImpl) GetInstancePage(ctx context.Context, pageNum, pageSize int, instance *InstanceModel.ApprovalInstance) ([]*InstanceModel.ApprovalInstance, int64, error) {
	return ListFlows[InstanceModel.ApprovalInstance](u.db, pageNum, pageSize, instance)
}