Add API for Label templates (#24602)

This adds API that allows getting the Label templates of the Gitea
Instance

Author: JakobDev

modules/structs/issue_label.go

@@ -44,3 +44,13 @@ type IssueLabelsOption struct {
 	// list of label IDs
 	Labels []int64 `json:"labels"`
 }
+
+// LabelTemplate info of a Label template
+type LabelTemplate struct {
+	Name string `json:"name"`
+	// example: false
+	Exclusive bool `json:"exclusive"`
+	// example: 00aabb
+	Color       string `json:"color"`
+	Description string `json:"description"`
+}

routers/api/v1/api.go

@@ -723,6 +723,8 @@ func Routes(ctx gocontext.Context) *web.Route {
 		m.Get("/gitignore/templates/{name}", misc.GetGitignoreTemplateInfo)
 		m.Get("/licenses", misc.ListLicenseTemplates)
 		m.Get("/licenses/{name}", misc.GetLicenseTemplateInfo)
+		m.Get("/label/templates", misc.ListLabelTemplates)
+		m.Get("/label/templates/{name}", misc.GetLabelTemplate)
 		m.Group("/settings", func() {
 			m.Get("/ui", settings.GetGeneralUISettings)
 			m.Get("/api", settings.GetGeneralAPISettings)

routers/api/v1/misc/label_templates.go

@@ -0,0 +1,60 @@
+// Copyright 2023 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package misc
+
+import (
+	"net/http"
+
+	"code.gitea.io/gitea/modules/context"
+	repo_module "code.gitea.io/gitea/modules/repository"
+	"code.gitea.io/gitea/modules/util"
+	"code.gitea.io/gitea/services/convert"
+)
+
+// Shows a list of all Label templates
+func ListLabelTemplates(ctx *context.APIContext) {
+	// swagger:operation GET /label/templates miscellaneous listLabelTemplates
+	// ---
+	// summary: Returns a list of all label templates
+	// produces:
+	// - application/json
+	// responses:
+	//   "200":
+	//     "$ref": "#/responses/LabelTemplateList"
+	result := make([]string, len(repo_module.LabelTemplateFiles))
+	for i := range repo_module.LabelTemplateFiles {
+		result[i] = repo_module.LabelTemplateFiles[i].DisplayName
+	}
+
+	ctx.JSON(http.StatusOK, result)
+}
+
+// Shows all labels in a template
+func GetLabelTemplate(ctx *context.APIContext) {
+	// swagger:operation GET /label/templates/{name} miscellaneous getLabelTemplateInfo
+	// ---
+	// summary: Returns all labels in a template
+	// produces:
+	// - application/json
+	// parameters:
+	// - name: name
+	//   in: path
+	//   description: name of the template
+	//   type: string
+	//   required: true
+	// responses:
+	//   "200":
+	//     "$ref": "#/responses/LabelTemplateInfo"
+	//   "404":
+	//     "$ref": "#/responses/notFound"
+	name := util.PathJoinRelX(ctx.Params("name"))
+
+	labels, err := repo_module.LoadTemplateLabelsByDisplayName(name)
+	if err != nil {
+		ctx.NotFound()
+		return
+	}
+
+	ctx.JSON(http.StatusOK, convert.ToLabelTemplateList(labels))
+}

routers/api/v1/swagger/misc.go

@@ -48,3 +48,17 @@ type swaggerResponseStringSlice struct {
 	// in:body
 	Body []string `json:"body"`
 }
+
+// LabelTemplateList
+// swagger:response LabelTemplateList
+type swaggerResponseLabelTemplateList struct {
+	// in:body
+	Body []string `json:"body"`
+}
+
+// LabelTemplateInfo
+// swagger:response LabelTemplateInfo
+type swaggerResponseLabelTemplateInfo struct {
+	// in:body
+	Body []api.LabelTemplate `json:"body"`
+}

services/convert/issue.go

@@ -13,6 +13,7 @@ import (
 	issues_model "code.gitea.io/gitea/models/issues"
 	repo_model "code.gitea.io/gitea/models/repo"
 	user_model "code.gitea.io/gitea/models/user"
+	"code.gitea.io/gitea/modules/label"
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/setting"
 	api "code.gitea.io/gitea/modules/structs"
@@ -238,3 +239,24 @@ func ToAPIMilestone(m *issues_model.Milestone) *api.Milestone {
 	}
 	return apiMilestone
 }
+
+// ToLabelTemplate converts Label to API format
+func ToLabelTemplate(label *label.Label) *api.LabelTemplate {
+	result := &api.LabelTemplate{
+		Name:        label.Name,
+		Exclusive:   label.Exclusive,
+		Color:       strings.TrimLeft(label.Color, "#"),
+		Description: label.Description,
+	}
+
+	return result
+}
+
+// ToLabelTemplateList converts list of Label to API format
+func ToLabelTemplateList(labels []*label.Label) []*api.LabelTemplate {
+	result := make([]*api.LabelTemplate, len(labels))
+	for i := range labels {
+		result[i] = ToLabelTemplate(labels[i])
+	}
+	return result
+}

templates/swagger/v1_json.tmpl

@@ -0,0 +1,61 @@
+// Copyright 2023 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package integration
+
+import (
+	"fmt"
+	"net/http"
+	"net/url"
+	"strings"
+	"testing"
+
+	repo_module "code.gitea.io/gitea/modules/repository"
+	api "code.gitea.io/gitea/modules/structs"
+	"code.gitea.io/gitea/tests"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestAPIListLabelTemplates(t *testing.T) {
+	defer tests.PrepareTestEnv(t)()
+
+	req := NewRequest(t, "GET", "/api/v1/label/templates")
+	resp := MakeRequest(t, req, http.StatusOK)
+
+	var templateList []string
+	DecodeJSON(t, resp, &templateList)
+
+	for i := range repo_module.LabelTemplateFiles {
+		assert.Equal(t, repo_module.LabelTemplateFiles[i].DisplayName, templateList[i])
+	}
+}
+
+func TestAPIGetLabelTemplateInfo(t *testing.T) {
+	defer tests.PrepareTestEnv(t)()
+
+	// If Gitea has for some reason no Label templates, we need to skip this test
+	if len(repo_module.LabelTemplateFiles) == 0 {
+		return
+	}
+
+	// Use the first template for the test
+	templateName := repo_module.LabelTemplateFiles[0].DisplayName
+
+	urlStr := fmt.Sprintf("/api/v1/label/templates/%s", url.PathEscape(templateName))
+	req := NewRequest(t, "GET", urlStr)
+	resp := MakeRequest(t, req, http.StatusOK)
+
+	var templateInfo []api.LabelTemplate
+	DecodeJSON(t, resp, &templateInfo)
+
+	labels, err := repo_module.LoadTemplateLabelsByDisplayName(templateName)
+	assert.NoError(t, err)
+
+	for i := range labels {
+		assert.Equal(t, strings.TrimLeft(labels[i].Color, "#"), templateInfo[i].Color)
+		assert.Equal(t, labels[i].Description, templateInfo[i].Description)
+		assert.Equal(t, labels[i].Exclusive, templateInfo[i].Exclusive)
+		assert.Equal(t, labels[i].Name, templateInfo[i].Name)
+	}
+}