package survey_mechanism

import (
	"surveyService/model"
	"surveyService/response"
	"surveyService/service/survey"
	"surveyService/validators"

	"github.com/golang-module/carbon"
	"github.com/samber/lo"
	"gogs.uu.mdfitnesscao.com/cuiguohai/sdk"
	"gogs.uu.mdfitnesscao.com/cuiguohai/sdk/mechanism"
)

// 获取某个问卷已被授权的机构列表
func ListMechanismIdsForSurvey(surveyId string) ([]string, *response.ErrCode) {
	var mechanismIds []string
	// 检查问卷是否真实存在
	surveyModel, findErr := survey.FindBySn(surveyId)
	if findErr != nil {
		return nil, findErr
	}

	model.DB.Where("survey_id = ?", surveyModel.ID).Pluck("mechanism_id", &mechanismIds)

	return mechanismIds, nil
}

// 获取问卷授权信息
func FindBySn(sn string) (*model.SurveyMechanism, *response.ErrCode) {
	var surveyMechanismModel model.SurveyMechanism
	findErr := model.DB.Where("sn = ?", sn).First(&surveyMechanismModel).Error
	if findErr != nil {
		return nil, &response.ErrCode{
			Code: response.ERROR,
			Msg:  "问卷授权不存在",
		}
	}

	return &surveyMechanismModel, nil
}

// 开始创建问卷授权
func Create(surveyId string, mechanismIds []string) *response.ErrCode {
	// 检查问卷是否真实存在
	surveyModel, findErr := survey.FindBySn(surveyId)
	if findErr != nil {
		return findErr
	}

	// 过滤掉所有跟问卷已经授权的机构
	var existMechanismIds []string
	model.DB.Model(&model.SurveyMechanism{}).Where("survey_id = ?", surveyModel.ID).Pluck("mechanism_id", &existMechanismIds)
	mechanismIds, _ = lo.Difference(mechanismIds, existMechanismIds)

	if len(mechanismIds) == 0 {
		return &response.ErrCode{
			Code: response.ERROR,
			Msg:  "没有需要授权的机构",
		}
	}

	// 开始创建授权
	var surveyMechanisms []*model.SurveyMechanism
	for _, mechanismId := range mechanismIds {
		surveyMechanisms = append(surveyMechanisms, &model.SurveyMechanism{
			SurveyId:    surveyModel.ID,
			MechanismId: mechanismId,
		})
	}
	createErr := model.DB.CreateInBatches(surveyMechanisms, len(surveyMechanisms)).Error
	if createErr != nil {
		return &response.ErrCode{
			Code: response.ERROR,
			Msg:  "创建问卷授权失败",
		}
	}

	return nil
}

// 获取授权列表
func Paginate(page, pageSize int, key string, mechanismId string, surveyId string) ([]*model.SurveyMechanism, int64, *response.ErrCode) {

	var surveyMechanisms []*model.SurveyMechanism
	var total int64

	// 开始查询
	query := model.DB.Model(&model.SurveyMechanism{})

	// 模糊搜索
	if key != "" {
		query = query.Where("name LIKE @key or description like @key", map[string]any{
			"key": "%" + key + "%",
		})
	}

	// 机构ID
	if mechanismId != "" {
		query = query.Where("mechanism_id = ?", mechanismId)
	}

	// 问卷ID
	if surveyId != "" {
		// 检查问卷是否真实存在
		surveyModel, findErr := survey.FindBySn(surveyId)
		if findErr != nil {
			return surveyMechanisms, total, findErr
		}
		query = query.Where("survey_id = ?", surveyModel.ID)
	}

	// 开始分页
	paginateErr := query.Count(&total).Error
	if paginateErr != nil {
		return nil, 0, &response.ErrCode{
			Code: response.ERROR,
			Msg:  "获取授权列表失败",
		}
	}

	query.Scopes(model.Paginate(page, pageSize)).Order("id desc").Preload("Survey").Find(&surveyMechanisms)
	return surveyMechanisms, total, nil
}

// 修改授权状态
func UpdateAuthorizeStatus(sn string, status int) *response.ErrCode {
	if status != model.SURVEY_MECHANISM_AUTHORIZE_STATUS_ENABLE && status != model.SURVEY_MECHANISM_AUTHORIZE_STATUS_DISABLE {
		return &response.ErrCode{
			Code: response.ERROR,
			Msg:  "不支持的状态",
		}
	}
	existsSurveyMechanism, findErr := FindBySn(sn)
	if findErr != nil {
		return findErr
	}

	// 修改状态
	updateErr := model.DB.Model(model.SurveyMechanism{}).Where("id = ?", existsSurveyMechanism.ID).Update("authorize_status", status).Error
	if updateErr != nil {
		return &response.ErrCode{
			Code: response.ERROR,
			Msg:  "修改授权状态失败",
		}
	}

	return nil
}

// 批量格式化
func ListFormat(surveyMechanisms []*model.SurveyMechanism) []*validators.SurveyMechanism {
	formatedSurveyMechanisms := make([]*validators.SurveyMechanism, 0)
	var mechanismIds []string
	for _, surveyMechanism := range surveyMechanisms {
		if surveyMechanism != nil {
			mechanismIds = append(mechanismIds, surveyMechanism.MechanismId)
		}
	}
	mechanismIds = lo.Uniq(mechanismIds)

	// 获取机构列表
	mechanisms, _ := mechanism.ListMechanismByIds(mechanismIds)

	for _, surveyMechanism := range surveyMechanisms {
		var mechanism *sdk.Mechanism
		// 找到机构
		_, index, _ := lo.FindIndexOf(mechanisms, func(mechanismItem *sdk.Mechanism) bool {
			return mechanismItem.ID == surveyMechanism.MechanismId
		})
		if index >= 0 {
			mechanism = mechanisms[index]
			formatedSurveyMechanisms = append(formatedSurveyMechanisms, Format(surveyMechanism, mechanism, true))
		}
	}

	return formatedSurveyMechanisms
}

// 格式化
func Format(surveyMechanism *model.SurveyMechanism, mechanism *sdk.Mechanism, visibleSurvey bool) *validators.SurveyMechanism {
	if surveyMechanism == nil {
		return nil
	}
	formatedSurvey := survey.Format(&surveyMechanism.Survey)
	surveyId := formatedSurvey.ID
	name := surveyMechanism.Name
	cover := surveyMechanism.Cover
	if name == "" {
		name = formatedSurvey.Name
	}
	if cover == "" {
		cover = formatedSurvey.Cover
	}
	if !visibleSurvey {
		formatedSurvey = nil
		surveyId = ""
	}
	return &validators.SurveyMechanism{
		ID:              surveyMechanism.SN,
		AuthorizeStatus: surveyMechanism.AuthorizeStatus,
		Status:          surveyMechanism.Status,
		MechanismId:     surveyMechanism.MechanismId,
		Mechanism:       mechanism,
		SurveyId:        surveyId,
		Survey:          formatedSurvey,
		CreatedAt:       carbon.Time2Carbon(surveyMechanism.CreatedAt).Format("Y/m/d H:i:s"),
		UpdatedAt:       carbon.Time2Carbon(surveyMechanism.UpdatedAt).Format("Y/m/d H:i:s"),
		Permissions:     surveyMechanism.Permissions,
		Name:            name,
		Cover:           cover,
		Description:     surveyMechanism.Description,
	}
}