/
links.go
80 lines (63 loc) · 1.65 KB
/
links.go
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package postgres
import (
"database/sql"
sq "github.com/Masterminds/squirrel"
"github.com/acs-dl/gitlab-module-svc/internal/data"
"github.com/fatih/structs"
"github.com/pkg/errors"
"gitlab.com/distributed_lab/kit/pgdb"
)
const (
linksTableName = "links"
linksLinkColumn = linksTableName + ".link"
)
type LinksQ struct {
db *pgdb.DB
selectBuilder sq.SelectBuilder
deleteBuilder sq.DeleteBuilder
}
func NewLinksQ(db *pgdb.DB) data.Links {
return &LinksQ{
db: db,
selectBuilder: sq.Select(linksTableName + ".*").From(linksTableName),
deleteBuilder: sq.Delete(linksTableName),
}
}
func (r LinksQ) New() data.Links {
return NewLinksQ(r.db)
}
func (r LinksQ) Get() (*data.Link, error) {
var result data.Link
err := r.db.Get(&result, r.selectBuilder)
if err != nil {
return nil, err
}
return &result, nil
}
func (r LinksQ) Select() ([]data.Link, error) {
var result []data.Link
err := r.db.Select(&result, r.selectBuilder)
return result, err
}
func (r LinksQ) Insert(link data.Link) error {
insertStmt := sq.Insert(linksTableName).SetMap(structs.Map(link)).Suffix("ON CONFLICT (link) DO NOTHING")
err := r.db.Exec(insertStmt)
return errors.Wrap(err, "failed to insert link")
}
func (r LinksQ) Delete() error {
var deleted []data.Link
err := r.db.Select(&deleted, r.deleteBuilder.Suffix("RETURNING *"))
if err != nil {
return err
}
if len(deleted) == 0 {
return sql.ErrNoRows
}
return nil
}
func (r LinksQ) FilterByLinks(links ...string) data.Links {
equalLinks := sq.Eq{linksLinkColumn: links}
r.selectBuilder = r.selectBuilder.Where(equalLinks)
r.deleteBuilder = r.deleteBuilder.Where(equalLinks)
return r
}