package technology

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

type Paper struct {
	*session.Admin
}

type PaperHandle func(session *session.Admin) *Paper

type (
	// PaperInfo 论文信息
	PaperInfo struct {
		ID       string `json:"id"`
		TenantID string `json:"tenant_id"`
		*model.TechnologyPaperInfo
		Area string `json:"area"`
	}
	// PaperDetailInfo 论文详细信息
	PaperDetailInfo struct {
		ID       string `json:"id"`
		TenantID string `json:"tenant_id"`
		*model2.TechnologyPaper
	}
)

// Instance 首页信息
func (c *Paper) Instance(tenantID uint64, title string, page, pageSize int) (*controller.ReturnPages, error) {
	mTechnologyPaper := model.NewTechnologyPaper()

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

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

	out, err := mTechnologyPaper.Paper(page, pageSize, &count, where...)

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

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

// Detail 详细信息
func (c *Paper) Detail(id uint64) (*PaperDetailInfo, error) {
	mTechnologyPaper := model.NewTechnologyPaper()
	mTechnologyPaper.ID = id

	isExist, err := model2.First(mTechnologyPaper.TechnologyPaper)

	if err != nil {
		return nil, err
	} else if !isExist {
		return nil, errors.New("操作错误，论文信息不存在或已被删除")
	}
	return &PaperDetailInfo{
		ID:              mTechnologyPaper.GetEncodeID(),
		TenantID:        mTechnologyPaper.GetEncodeTenantID(),
		TechnologyPaper: mTechnologyPaper.TechnologyPaper,
	}, nil
}

func (c *Paper) Form() error {
	return nil
}

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

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

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

func NewPaper() PaperHandle {
	return func(session *session.Admin) *Paper {
		return &Paper{session}
	}
}