package technology

import (
	"SciencesServer/app/api/enterprise/model"
	"SciencesServer/app/basic/controller"
	model2 "SciencesServer/app/common/model"
	"SciencesServer/app/session"
	"SciencesServer/utils"
	"errors"
	"time"
)

// Paper 论文管理
type Paper struct {
	*session.Enterprise
	local string
}

type PaperHandle func(session *session.Enterprise, local string) *Paper

type (
	PaperInfo struct {
		ID string `json:"id"`
		*model2.TechnologyPaper
		Tags []string `json:"tags"`
	}
	PaperParams struct {
		ID                                    uint64
		Title, Ext, Author, PublishAt, Remark string
		Keywords, Tags                        []string
	}
)

// List 列表信息
func (c *Paper) List(title string, page, pageSize int) (*controller.ReturnPages, error) {
	mTechnologyPaper := model.NewTechnologyPaper()

	where := []*model2.ModelWhereOrder{&model2.ModelWhereOrder{
		Order: model2.NewOrder("id", model2.OrderModeToDesc),
	}, &model2.ModelWhereOrder{
		Where: model2.NewWhere("local", c.local),
	}}
	if title != "" {
		where = append(where, &model2.ModelWhereOrder{Where: model2.NewWhereLike("title", title)})
	}
	out := make([]*model2.TechnologyPaper, 0)

	var count int64

	if err := model2.Pages(mTechnologyPaper.TechnologyPaper, &out, page, pageSize, &count, where...); err != nil {
		return nil, err
	}
	list := make([]*PaperInfo, 0)

	for _, v := range out {
		list = append(list, &PaperInfo{ID: v.GetEncodeID(), TechnologyPaper: v, Tags: v.GetTagAttribute()})
	}
	return &controller.ReturnPages{Data: list, Count: count}, nil
}

// Form 参数信息
func (c *Paper) Form(params *PaperParams) error {
	mTechnologyPaper := model.NewTechnologyPaper()

	if params.ID > 0 {
		mTechnologyPaper.ID = params.ID

		if isExist, err := model2.First(mTechnologyPaper.TechnologyPaper); err != nil {
			return err
		} else if !isExist {
			return errors.New("当前论文信息不存在")
		} else if mTechnologyPaper.UID != c.UID {
			return errors.New("无权限操作")
		}
	}
	mTechnologyPaper.Title = params.Title
	mTechnologyPaper.Ext = params.Ext
	mTechnologyPaper.Author = params.Author
	mTechnologyPaper.PublishAt = utils.DateTimeToTime(params.PublishAt)
	mTechnologyPaper.SetKeywordAttribute(params.Keywords)
	mTechnologyPaper.SetTagAttribute(params.Tags)
	mTechnologyPaper.Remark = params.Remark

	if params.ID <= 0 {
		mTechnologyPaper.UID = c.UID
		mTechnologyPaper.Local.Local = c.local
		return model2.Create(mTechnologyPaper.TechnologyPaper)
	}
	mTechnologyPaper.UpdatedAt = time.Now()
	return model2.Updates(mTechnologyPaper.TechnologyPaper, mTechnologyPaper.TechnologyPaper)
}

// Delete 删除操作
func (c *Paper) Delete(id uint64) error {
	mTechnologyPaper := model.NewTechnologyPaper()
	mTechnologyPaper.ID = id

	var count int64

	err := model2.Count(mTechnologyPaper.TechnologyPaper, &count, model2.NewWhere("id", id), model2.NewWhere("uid", c.UID))

	if err != nil {
		return err
	} else if count <= 0 {
		return errors.New("操作错误，当前论文信息不存在或已被删除")
	}
	if err = model2.Delete(mTechnologyPaper.TechnologyPaper); err != nil {
		return err
	}
	return nil
}

func NewPaper() PaperHandle {
	return func(session *session.Enterprise, local string) *Paper {
		return &Paper{Enterprise: session, local: local}
	}
}