[API] Add repoCreateTag (#16165)

* Add API CreateTag

* Add Test

* API: expose Tag Message

routers/api/v1/api.go

@@ -775,6 +775,7 @@ func Routes() *web.Route {
 				}, reqToken(), reqAdmin())
 				m.Group("/tags", func() {
 					m.Get("", repo.ListTags)
+					m.Post("", reqRepoWriter(models.UnitTypeCode), bind(api.CreateTagOption{}), repo.CreateTag)
 					m.Delete("/{tag}", repo.DeleteTag)
 				}, reqRepoReader(models.UnitTypeCode), context.ReferencesGitRepo(true))
 				m.Group("/keys", func() {

routers/api/v1/repo/tag.go

@@ -6,12 +6,14 @@ package repo
 
 import (
 	"errors"
+	"fmt"
 	"net/http"
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/modules/context"
 	"code.gitea.io/gitea/modules/convert"
 	api "code.gitea.io/gitea/modules/structs"
+	"code.gitea.io/gitea/modules/web"
 	"code.gitea.io/gitea/routers/api/v1/utils"
 	releaseservice "code.gitea.io/gitea/services/release"
 )
@@ -160,3 +162,62 @@ func DeleteTag(ctx *context.APIContext) {
 
 	ctx.Status(http.StatusNoContent)
 }
+
+// CreateTag create a new git tag in a repository
+func CreateTag(ctx *context.APIContext) {
+	// swagger:operation POST /repos/{owner}/{repo}/tags repository repoCreateTag
+	// ---
+	// summary: Create a new git tag in a repository
+	// produces:
+	// - application/json
+	// parameters:
+	// - name: owner
+	//   in: path
+	//   description: owner of the repo
+	//   type: string
+	//   required: true
+	// - name: repo
+	//   in: path
+	//   description: name of the repo
+	//   type: string
+	//   required: true
+	// - name: body
+	//   in: body
+	//   schema:
+	//     "$ref": "#/definitions/CreateTagOption"
+	// responses:
+	//   "200":
+	//     "$ref": "#/responses/AnnotatedTag"
+	//   "404":
+	//     "$ref": "#/responses/notFound"
+	//   "409":
+	//     "$ref": "#/responses/conflict"
+	form := web.GetForm(ctx).(*api.CreateTagOption)
+
+	// If target is not provided use default branch
+	if len(form.Target) == 0 {
+		form.Target = ctx.Repo.Repository.DefaultBranch
+	}
+
+	commit, err := ctx.Repo.GitRepo.GetCommit(form.Target)
+	if err != nil {
+		ctx.Error(http.StatusNotFound, "target not found", fmt.Errorf("target not found: %v", err))
+		return
+	}
+
+	if err := releaseservice.CreateNewTag(ctx.User, ctx.Repo.Repository, commit.ID.String(), form.TagName, form.Message); err != nil {
+		if models.IsErrTagAlreadyExists(err) {
+			ctx.Error(http.StatusConflict, "tag exist", err)
+			return
+		}
+		ctx.InternalServerError(err)
+		return
+	}
+
+	tag, err := ctx.Repo.GitRepo.GetTag(form.TagName)
+	if err != nil {
+		ctx.InternalServerError(err)
+		return
+	}
+	ctx.JSON(http.StatusCreated, convert.ToTag(ctx.Repo.Repository, tag))
+}

routers/api/v1/swagger/options.go

@@ -158,4 +158,7 @@ type swaggerParameterBodies struct {
 
 	// in:body
 	PullReviewRequestOptions api.PullReviewRequestOptions
+
+	// in:body
+	CreateTagOption api.CreateTagOption
 }