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package redis
import (
"errors"
"fmt"
"log"
"github.com/gomodule/redigo/redis"
"git.ofmax.li/iserv/internal/image"
)
const V1FilePathFmt = "v1imagepost:%s"
var ErrNotFound error = errors.New("Not Found")
// ImageRepo deps. for storage
type ImageRepo struct {
db *redis.Pool
}
// NewRedisImageRepo
func NewRedisImageRepo(conn *redis.Pool) *ImageRepo {
return &ImageRepo{
conn,
}
}
func fileKey(imageID, V1FilePathFmt string) string {
return fmt.Sprintf(V1FilePathFmt, imageID)
}
func (r *ImageRepo) AddNewFile(imageID string, meta *image.PostMeta, timeout int) error {
conn := r.db.Get()
defer conn.Close()
key := fileKey(imageID, V1FilePathFmt)
_, err := conn.Do("HMSET", redis.Args{}.Add(key).AddFlat(meta)...)
if err != nil {
log.Fatal(err)
}
return err
}
func (r *ImageRepo) GetFile(fileUrl string) (*image.PostMeta, error) {
conn := r.db.Get()
defer conn.Close()
imageMeta := &image.PostMeta{}
key := fileKey(fileUrl, V1FilePathFmt)
res, err := redis.Values(conn.Do("HGETALL", key))
if err != nil {
return &image.PostMeta{}, err
}
err = redis.ScanStruct(res, imageMeta)
if imageMeta.FilePath == "" {
return &image.PostMeta{}, ErrNotFound
}
return imageMeta, err
}
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