add: tags list page info

modules/git/repo_tag.go

@@ -186,6 +186,16 @@ func (repo *Repository) GetTag(name string) (*Tag, error) {
 	return tag, nil
 }
 
+func (repo *Repository) GetTagCount() (int64, error) {
+	stdout, err := NewCommand("tag").RunInDir(repo.Path)
+	if err != nil {
+		return 0, err
+	}
+
+	tagNames := strings.Split(strings.TrimRight(stdout, "\n"), "\n")
+	return int64(len(tagNames)), nil
+}
+
 // GetTagInfos returns all tag infos of the repository.
 func (repo *Repository) GetTagInfos(page, pageSize int) ([]*Tag, error) {
 	// TODO this a slow implementation, makes one git command per tag

routers/api/v1/repo/tag.go

@@ -5,7 +5,10 @@
 package repo
 
 import (
+	"fmt"
+	"math"
 	"net/http"
+	"strconv"
 
 	"code.gitea.io/gitea/modules/context"
 	"code.gitea.io/gitea/modules/convert"
@@ -56,6 +59,22 @@ func ListTags(ctx *context.APIContext) {
 		apiTags[i] = convert.ToTag(ctx.Repo.Repository, tags[i])
 	}
 
+	tagsCountTotal, err := ctx.Repo.GitRepo.GetTagCount()
+	if err != nil {
+		ctx.Error(http.StatusInternalServerError, "GetTagCount", err)
+		return
+	}
+
+	pageCount := int(math.Ceil(float64(tagsCountTotal) / float64(listOpts.PageSize)))
+	ctx.Header().Set("X-Page", strconv.Itoa(listOpts.Page))
+	ctx.Header().Set("X-PerPage", strconv.Itoa(listOpts.PageSize))
+	ctx.Header().Set("X-Total", strconv.FormatInt(tagsCountTotal, 10))
+	ctx.Header().Set("X-PageCount", strconv.Itoa(pageCount))
+	ctx.Header().Set("X-HasMore", strconv.FormatBool(listOpts.Page < pageCount))
+
+	ctx.SetLinkHeader(int(tagsCountTotal), listOpts.PageSize)
+	ctx.Header().Set("X-Total-Count", fmt.Sprintf("%d", tagsCountTotal))
+
 	ctx.JSON(http.StatusOK, &apiTags)
 }
 

routers/api/v1/swagger/repo.go

@@ -53,6 +53,21 @@ type swaggerResponseBranchProtectionList struct {
 // TagList
 // swagger:response TagList
 type swaggerResponseTagList struct {
+	// The current page
+	Page int `json:"X-Page"`
+
+	// Commits per page
+	PerPage int `json:"X-PerPage"`
+
+	// Total commit count
+	Total int `json:"X-Total"`
+
+	// Total number of pages
+	PageCount int `json:"X-PageCount"`
+
+	// True if there is another page
+	HasMore bool `json:"X-HasMore"`
+
 	// in:body
 	Body []api.Tag `json:"body"`
 }

templates/swagger/v1_json.tmpl

@@ -16379,6 +16379,32 @@
         "items": {
           "$ref": "#/definitions/Tag"
         }
+      },
+      "headers": {
+        "X-HasMore": {
+          "type": "boolean",
+          "description": "True if there is another page"
+        },
+        "X-Page": {
+          "type": "integer",
+          "format": "int64",
+          "description": "The current page"
+        },
+        "X-PageCount": {
+          "type": "integer",
+          "format": "int64",
+          "description": "Total number of pages"
+        },
+        "X-PerPage": {
+          "type": "integer",
+          "format": "int64",
+          "description": "Commits per page"
+        },
+        "X-Total": {
+          "type": "integer",
+          "format": "int64",
+          "description": "Total commit count"
+        }
       }
     },
     "Team": {