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routes_tag.go
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routes_tag.go
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package api
import (
"context"
"errors"
"net/http"
"strconv"
"github.com/go-chi/chi/v5"
"github.com/stashapp/stash/internal/static"
"github.com/stashapp/stash/pkg/logger"
"github.com/stashapp/stash/pkg/models"
"github.com/stashapp/stash/pkg/utils"
)
type TagFinder interface {
models.TagGetter
GetImage(ctx context.Context, tagID int) ([]byte, error)
}
type tagRoutes struct {
routes
tagFinder TagFinder
}
func (rs tagRoutes) Routes() chi.Router {
r := chi.NewRouter()
r.Route("/{tagId}", func(r chi.Router) {
r.Use(rs.TagCtx)
r.Get("/image", rs.Image)
})
return r
}
func (rs tagRoutes) Image(w http.ResponseWriter, r *http.Request) {
tag := r.Context().Value(tagKey).(*models.Tag)
defaultParam := r.URL.Query().Get("default")
var image []byte
if defaultParam != "true" {
readTxnErr := rs.withReadTxn(r, func(ctx context.Context) error {
var err error
image, err = rs.tagFinder.GetImage(ctx, tag.ID)
return err
})
if errors.Is(readTxnErr, context.Canceled) {
return
}
if readTxnErr != nil {
logger.Warnf("read transaction error on fetch tag image: %v", readTxnErr)
}
}
// fallback to default image
if len(image) == 0 {
image = static.ReadAll(static.DefaultTagImage)
}
utils.ServeImage(w, r, image)
}
func (rs tagRoutes) TagCtx(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
tagID, err := strconv.Atoi(chi.URLParam(r, "tagId"))
if err != nil {
http.Error(w, http.StatusText(404), 404)
return
}
var tag *models.Tag
_ = rs.withReadTxn(r, func(ctx context.Context) error {
var err error
tag, err = rs.tagFinder.Find(ctx, tagID)
return err
})
if tag == nil {
http.Error(w, http.StatusText(404), 404)
return
}
ctx := context.WithValue(r.Context(), tagKey, tag)
next.ServeHTTP(w, r.WithContext(ctx))
})
}