cas_tt_cloud_backend/app/api/website/controller/activity.go

package controller

import (
	"SciencesServer/app/api/website/model"
	config2 "SciencesServer/app/basic/config"
	"SciencesServer/app/basic/controller"
	model2 "SciencesServer/app/common/model"
	"SciencesServer/app/service"
	"SciencesServer/app/session"
	"SciencesServer/config"
	"errors"
	"fmt"
	"strings"
	"time"
)

type Activity struct {
	*session.Enterprise
	tenantID uint64
}

type ActivityHandle func(session *session.Enterprise, tenantID uint64) *Activity

type (
	// ActivityInfo 活动信息
	ActivityInfo struct {
		ID string `json:"id"`
		*model.ActivityInstanceInfo
		Amount float64 `json:"amount"`
		IsJoin bool    `json:"is_join"`
		Status int     `json:"status"` // 状态（1：未开始，2：进行中，3：已结束）
	}
	// ActivityDetail 详细信息
	ActivityDetail struct {
		ID string `json:"id"`
		*model.ActivityInstanceDetail
		Industry string `json:"industry"`
		IsJoin   bool   `json:"is_join"`
	}
)

// Instance 活动信息
func (c *Activity) Instance(title, industry string, status, page, pageSize int) (*controller.ReturnPages, error) {
	mActivityInstance := model.NewActivityInstance()

	now := time.Now()

	where := []*model2.ModelWhere{model2.NewWhere("a.tenant_id", c.tenantID)}

	if title != "" {
		where = append(where, model2.NewWhereLike("a.title", title))
	}
	if industry != "" {
		where = append(where, model2.NewWhereCondition("a.industry", "LIKE", "%"+fmt.Sprintf(`"%v`, industry)+"%"))
	}
	if status > 0 {
		if status == 1 {
			where = append(where, model2.NewWhereCondition("a.begin_at", ">", now))
		} else if status == 2 {
			where = append(where, model2.NewWhereCondition("a.begin_at", "<=", now),
				model2.NewWhereCondition("a.finish_at", ">=", now))
		} else {
			where = append(where, model2.NewWhereCondition("a.finish_at", "<", now))
		}
	}
	var count int64

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

	if err != nil {
		return nil, err
	}

	list := make([]*ActivityInfo, 0)

	for _, v := range out {
		v.Image.Image = v.Image.Analysis(config.SystemConfig[config.SysImageDomain])

		data := &ActivityInfo{
			ID: v.GetEncodeID(), Amount: v.Amount, ActivityInstanceInfo: v, IsJoin: v.JoinID > 0, Status: 2,
		}
		if now.Before(v.BeginAt) {
			data.Status = 1
			goto CONTINUE
		}

		if now.After(v.FinishAt) {
			data.Status = 3
			goto CONTINUE
		}
	CONTINUE:
		list = append(list, data)
	}
	return &controller.ReturnPages{Data: list, Count: count}, nil
}

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

	out, err := mActivityInstance.Detail(id, c.UID, c.SelectIdentity)

	if err != nil {
		return nil, err
	}
	out.Image.Image = out.Image.Analysis(config.SystemConfig[config.SysImageDomain])

	industrys := make([]string, 0)

	for _, v := range out.GetIndustryAttribute() {
		industrys = append(industrys, config2.GetIndustryInfo(v, "-", "-").Value)
	}

	return &ActivityDetail{
		ID:                     out.GetEncodeID(),
		ActivityInstanceDetail: out,
		Industry:               strings.Join(industrys, "；"),
		IsJoin:                 out.JoinID > 0.,
	}, nil
}

// Join 加入活动
func (c *Activity) Join(id uint64) error {
	mActivityInstance := model.NewActivityInstance()

	isExist, err := model2.FirstField(mActivityInstance.ActivityInstance, []string{"id", "amount", "join_deadline"},
		model2.NewWhere("id", id), model2.NewWhere("tenant_id", c.tenantID),
		model2.NewWhere("status", model2.ActivityInstanceStatusForShow))

	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 !mActivityInstance.IsCanJoin() {
		return errors.New("操作错误，当前活动信息不可报名")
	}
	if c.SelectIdentity <= 0 {
		return errors.New("操作错误，当前未选择任何身份信息")
	}
	// 查看当前活动是否报名
	var count int64

	if err = model2.Count(model.NewActivityJoin().ActivityJoin, &count, model2.NewWhere("id", c.UID),
		model2.NewWhere("identity", c.SelectIdentity), model2.NewWhere("activity_id", id),
		model2.NewWhere("status", model2.ActivityJoinStatusForSuccess)); err != nil {
		return err
	}
	if count > 0 {
		return errors.New("操作错误，不可重复报名")
	}
	if mActivityInstance.Amount <= 0 {
		service.Publish(config.EventForActivityJoinProduce, id, c.UID, c.SelectIdentity)
	}
	return nil
}

func NewActivity() ActivityHandle {
	return func(session *session.Enterprise, tenantID uint64) *Activity {
		return &Activity{Enterprise: session, tenantID: tenantID}
	}
}