package activity

import (
	"SciencesServer/app/api/admin/model"
	"SciencesServer/app/basic/controller"
	model2 "SciencesServer/app/common/model"
	"SciencesServer/app/session"
	"errors"
)

type Instance struct {
	*session.Admin
}

type InstanceHandle func(session *session.Admin) *Instance

type (
	// InstanceInfo 活动信息
	InstanceInfo struct {
		ID string `json:"id"`
		*model.ActivityInstanceInfo
		Area string `json:"area"`
	}
	// InstanceDetailInfo 活动详细信息
	InstanceDetailInfo struct {
		ID       string `json:"id"`
		TenantID string `json:"tenant_id"`
		*model2.ActivityInstance
	}
)

func (c *Instance) Index(tenantID uint64, title string, page, pageSize int) (*controller.ReturnPages, error) {
	mActivityInstance := model.NewActivityInstance()

	where := make([]*model2.ModelWhere, 0)

	if c.TenantID > 0 {
		where = append(where, model2.NewWhere("a.tenant_id", c.TenantID))
	}
	if tenantID > 0 {
		where = append(where, model2.NewWhere("a.tenant_id", tenantID))
	}
	if title != "" {
		where = append(where, model2.NewWhereLike("a.title", title))
	}
	var count int64

	out, err := mActivityInstance.Activity(page, pageSize, &count, where...)

	if err != nil {
		return nil, err
	}
	list := make([]*InstanceInfo, 0)

	for _, v := range out {
		list = append(list, &InstanceInfo{
			ID:                   v.GetEncodeID(),
			ActivityInstanceInfo: v,
			Area:                 v.FormatBasic(),
		})
	}
	return &controller.ReturnPages{Data: list, Count: count}, nil
}

// Detail 详细信息
func (c *Instance) Detail(id uint64) (*InstanceDetailInfo, error) {
	mActivityInstance := model.NewActivityInstance()
	mActivityInstance.ID = id

	isExist, err := model2.First(mActivityInstance.ActivityInstance)

	if err != nil {
		return nil, err
	} else if !isExist {
		return nil, errors.New("操作错误，活动信息不存在或已被删除")
	}
	return &InstanceDetailInfo{
		ID:               mActivityInstance.GetEncodeID(),
		TenantID:         mActivityInstance.GetEncodeTenantID(),
		ActivityInstance: mActivityInstance.ActivityInstance,
	}, nil
}

func (c *Instance) Form() {

}

func (c *Instance) Delete(id uint64) error {
	mActivityInstance := model.NewActivityInstance()
	mActivityInstance.ID = id

	isExist, err := model2.FirstField(mActivityInstance.ActivityInstance, []string{"id", "tenant_id"})

	if err != nil {
		return err
	} else if !isExist {
		return errors.New("操作错误，活动信息不存在或已被删除")
	}
	if c.TenantID > 0 && c.TenantID != mActivityInstance.TenantID {
		return errors.New("操作错误，无权限操作")
	}
	return model2.Delete(mActivityInstance.ActivityInstance)
}

func NewInstance() InstanceHandle {
	return func(session *session.Admin) *Instance {
		return &Instance{session}
	}
}