Add X-Total-Count header

Author: 6543

models/release.go

@@ -215,6 +215,11 @@ func GetReleasesByRepoID(repoID int64, opts FindReleasesOptions) ([]*Release, er
 	return rels, sess.Find(&rels)
 }
 
+// CountReleasesByRepoID returns a number of releases matching FindReleaseOptions and RepoID.
+func CountReleasesByRepoID(repoID int64, opts FindReleasesOptions) (int64, error) {
+	return x.Where(opts.toConds(repoID)).Count(new(Release))
+}
+
 // GetLatestReleaseByRepoID returns the latest release for a repository
 func GetLatestReleaseByRepoID(repoID int64) (*Release, error) {
 	cond := builder.NewCond().

routers/api/v1/repo/release.go

@@ -5,6 +5,7 @@
 package repo
 
 import (
+	"fmt"
 	"net/http"
 
 	"code.gitea.io/gitea/models"
@@ -112,13 +113,15 @@ func ListReleases(ctx *context.APIContext) {
 		listOptions.PageSize = ctx.QueryInt("per_page")
 	}
 
-	releases, err := models.GetReleasesByRepoID(ctx.Repo.Repository.ID, models.FindReleasesOptions{
+	opts := models.FindReleasesOptions{
 		ListOptions:   listOptions,
 		IncludeDrafts: ctx.Repo.AccessMode >= models.AccessModeWrite,
 		IncludeTags:   false,
 		IsDraft:       ctx.QueryOptionalBool("draft"),
 		IsPreRelease:  ctx.QueryOptionalBool("pre-release"),
-	})
+	}
+
+	releases, err := models.GetReleasesByRepoID(ctx.Repo.Repository.ID, opts)
 	if err != nil {
 		ctx.Error(http.StatusInternalServerError, "GetReleasesByRepoID", err)
 		return
@@ -131,6 +134,16 @@ func ListReleases(ctx *context.APIContext) {
 		}
 		rels[i] = convert.ToRelease(release)
 	}
+
+	filteredCount, err := models.CountReleasesByRepoID(ctx.Repo.Repository.ID, opts)
+	if err != nil {
+		ctx.InternalServerError(err)
+		return
+	}
+
+	ctx.SetLinkHeader(int(filteredCount), listOptions.PageSize)
+	ctx.Header().Set("X-Total-Count", fmt.Sprint(filteredCount))
+	ctx.Header().Set("Access-Control-Expose-Headers", "X-Total-Count, Link")
 	ctx.JSON(http.StatusOK, rels)
 }