gosora/common/likes.go

63 lines
1.5 KiB
Go

package common
import (
"database/sql"
qgen "github.com/Azareal/Gosora/query_gen"
)
var Likes LikeStore
type LikeStore interface {
BulkExists(ids []int, sentBy int, targetType string) ([]int, error)
Delete(targetID int, targetType string) error
Count() (count int)
}
type DefaultLikeStore struct {
count *sql.Stmt
delete *sql.Stmt
}
func NewDefaultLikeStore(acc *qgen.Accumulator) (*DefaultLikeStore, error) {
return &DefaultLikeStore{
count: acc.Count("likes").Prepare(),
delete: acc.Delete("likes").Where("targetItem=? AND targetType=?").Prepare(),
}, acc.FirstError()
}
// TODO: Write a test for this
func (s *DefaultLikeStore) BulkExists(ids []int, sentBy int, targetType string) (eids []int, err error) {
rows, err := qgen.NewAcc().Select("likes").Columns("targetItem").Where("sentBy=? AND targetType=?").In("targetItem", ids).Query(sentBy, targetType)
if err == sql.ErrNoRows {
return nil, nil
} else if err != nil {
return nil, err
}
defer rows.Close()
var id int
for rows.Next() {
if err := rows.Scan(&id); err != nil {
return nil, err
}
eids = append(eids, id)
}
return eids, rows.Err()
}
func (s *DefaultLikeStore) Delete(targetID int, targetType string) error {
_, err := s.delete.Exec(targetID, targetType)
return err
}
// TODO: Write a test for this
// Count returns the total number of likes globally
func (s *DefaultLikeStore) Count() (count int) {
err := s.count.QueryRow().Scan(&count)
if err != nil {
LogError(err)
}
return count
}