[API] Forgejo API /api/forgejo/v1

(cherry picked from commit 20b5669269)
(cherry picked from commit 1574643a6a)

Update semantic version according to specification

(cherry picked from commit 22510f4130)

Mise à jour de 'Makefile'

(cherry picked from commit c3d85d8409)
(cherry picked from commit 5ea2309851)
(cherry picked from commit 4f3970e6c4)

[API] [SEMVER] replace number with version

[API] [SEMVER] [v1.20] less is replaced by css

(cherry picked from commit 43a3a40825)
(cherry picked from commit 669cea25bb)
(cherry picked from commit e25190d2b4)
(cherry picked from commit 5df876e19e)
(cherry picked from commit fc94f6fae2)
(cherry picked from commit 58c50c1fe4)

Makefile

@@ -102,7 +102,10 @@ ifeq ($(VERSION),main)
 	VERSION := main-nightly
 endif
 
-LDFLAGS := $(LDFLAGS) -X "main.MakeVersion=$(MAKE_VERSION)" -X "main.Version=$(GITEA_VERSION)" -X "main.Tags=$(TAGS)"
+# SemVer
+FORGEJO_VERSION := 3.0.0+0-gitea-1.19.0
+
+LDFLAGS := $(LDFLAGS) -X "main.MakeVersion=$(MAKE_VERSION)" -X "main.Version=$(GITEA_VERSION)" -X "main.Tags=$(TAGS)" -X "code.gitea.io/gitea/routers/api/forgejo/v1.ForgejoVersion=$(FORGEJO_VERSION)"
 
 LINUX_ARCHS ?= linux/amd64,linux/386,linux/arm-5,linux/arm-6,linux/arm64
 
@@ -154,6 +157,8 @@ ifdef DEPS_PLAYWRIGHT
 	PLAYWRIGHT_FLAGS += --with-deps
 endif
 
+FORGEJO_API_SPEC := public/forgejo/api.v1.yml
+
 SWAGGER_SPEC := templates/swagger/v1_json.tmpl
 SWAGGER_SPEC_S_TMPL := s|"basePath": *"/api/v1"|"basePath": "{{AppSubUrl \| JSEscape \| Safe}}/api/v1"|g
 SWAGGER_SPEC_S_JSON := s|"basePath": *"{{AppSubUrl \| JSEscape \| Safe}}/api/v1"|"basePath": "/api/v1"|g
@@ -214,6 +219,8 @@ help:
 	@echo " - generate-license                 update license files"
 	@echo " - generate-gitignore               update gitignore files"
 	@echo " - generate-manpage                 generate manpage"
+	@echo " - generate-forgejo-api             generate the forgejo API from spec"
+	@echo " - forgejo-api-validate             check if the forgejo API matches the specs"
 	@echo " - generate-swagger                 generate the swagger spec from code comments"
 	@echo " - swagger-validate                 check if the swagger spec is valid"
 	@echo " - golangci-lint                    run golangci-lint linter"
@@ -303,6 +310,27 @@ ifneq "$(TAGS)" "$(shell cat $(TAGS_EVIDENCE) 2>/dev/null)"
 TAGS_PREREQ := $(TAGS_EVIDENCE)
 endif
 
+OAPI_CODEGEN_PACKAGE ?= github.com/deepmap/oapi-codegen/cmd/oapi-codegen@v1.12.4
+KIN_OPENAPI_CODEGEN_PACKAGE ?= github.com/getkin/kin-openapi/cmd/validate@v0.114.0
+FORGEJO_API_SERVER = routers/api/forgejo/v1/generated.go
+
+.PHONY: generate-forgejo-api
+generate-forgejo-api: $(FORGEJO_API_SPEC)
+	$(GO) run $(OAPI_CODEGEN_PACKAGE) -package v1 -generate chi-server,types $< > $(FORGEJO_API_SERVER)
+
+.PHONY: forgejo-api-check
+forgejo-api-check: generate-forgejo-api
+	@diff=$$(git diff $(FORGEJO_API_SERVER) ; \
+	if [ -n "$$diff" ]; then \
+		echo "Please run 'make generate-forgejo-api' and commit the result:"; \
+		echo "$${diff}"; \
+		exit 1; \
+	fi
+
+.PHONY: forgejo-api-validate
+forgejo-api-validate:
+	$(GO) run $(KIN_OPENAPI_CODEGEN_PACKAGE) $(FORGEJO_API_SPEC)
+
 .PHONY: generate-swagger
 generate-swagger: $(SWAGGER_SPEC)
 
@@ -338,7 +366,7 @@ checks: checks-frontend checks-backend
 checks-frontend: lockfile-check svg-check
 
 .PHONY: checks-backend
-checks-backend: tidy-check swagger-check fmt-check misspell-check swagger-validate security-check
+checks-backend: tidy-check swagger-check fmt-check misspell-check forgejo-api-validate swagger-validate security-check
 
 .PHONY: lint
 lint: lint-frontend lint-backend

public/forgejo/api.v1.yml

@@ -0,0 +1,40 @@
+openapi: 3.0.0
+info:
+  title: Forgejo API
+  description: |-
+    Forgejo REST API
+
+  contact:
+    email: contact@forgejo.org
+  license:
+    name: MIT
+    url: https://codeberg.org/forgejo/forgejo/src/branch/forgejo/LICENSE
+  version: 1.0.0
+externalDocs:
+  description: Find out more about Forgejo
+  url: http://forgejo.org
+servers:
+  - url: /api/forgejo/v1
+paths:
+  /version:
+    get:
+      summary: API version
+      description: Semantic version of the Forgejo API
+      operationId: getVersion
+      responses:
+        '200':
+          description: successful operation
+          content:
+            application/json:
+              schema:
+                type: array
+                items:
+                  $ref: '#/components/schemas/Version'
+components:
+  schemas:
+    Version:
+      type: object
+      properties:
+        version:
+          type: string
+

routers/api/forgejo/v1/api.go

@@ -0,0 +1,18 @@
+// Copyright 2023 The Forgejo Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package v1
+
+import (
+	gocontext "context"
+
+	"code.gitea.io/gitea/modules/web"
+)
+
+func Routes(ctx gocontext.Context) *web.Route {
+	m := web.NewRoute()
+	forgejo := NewForgejo()
+	m.Get("", Root)
+	m.Get("/version", forgejo.GetVersion)
+	return m
+}

routers/api/forgejo/v1/forgejo.go

@@ -0,0 +1,24 @@
+// SPDX-License-Identifier: MIT
+
+package v1
+
+import (
+	"net/http"
+
+	"code.gitea.io/gitea/modules/json"
+)
+
+type Forgejo struct{}
+
+var _ ServerInterface = &Forgejo{}
+
+func NewForgejo() *Forgejo {
+	return &Forgejo{}
+}
+
+var ForgejoVersion = "development"
+
+func (f *Forgejo) GetVersion(w http.ResponseWriter, r *http.Request) {
+	w.WriteHeader(http.StatusOK)
+	_ = json.NewEncoder(w).Encode(Version{&ForgejoVersion})
+}

routers/api/forgejo/v1/generated.go

@@ -0,0 +1,167 @@
+// Package v1 provides primitives to interact with the openapi HTTP API.
+//
+// Code generated by github.com/deepmap/oapi-codegen version v1.12.4 DO NOT EDIT.
+package v1
+
+import (
+	"fmt"
+	"net/http"
+
+	"github.com/go-chi/chi/v5"
+)
+
+// Version defines model for Version.
+type Version struct {
+	Version *string `json:"version,omitempty"`
+}
+
+// ServerInterface represents all server handlers.
+type ServerInterface interface {
+	// API version
+	// (GET /version)
+	GetVersion(w http.ResponseWriter, r *http.Request)
+}
+
+// ServerInterfaceWrapper converts contexts to parameters.
+type ServerInterfaceWrapper struct {
+	Handler            ServerInterface
+	HandlerMiddlewares []MiddlewareFunc
+	ErrorHandlerFunc   func(w http.ResponseWriter, r *http.Request, err error)
+}
+
+type MiddlewareFunc func(http.Handler) http.Handler
+
+// GetVersion operation middleware
+func (siw *ServerInterfaceWrapper) GetVersion(w http.ResponseWriter, r *http.Request) {
+	ctx := r.Context()
+
+	var handler http.Handler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		siw.Handler.GetVersion(w, r)
+	})
+
+	for _, middleware := range siw.HandlerMiddlewares {
+		handler = middleware(handler)
+	}
+
+	handler.ServeHTTP(w, r.WithContext(ctx))
+}
+
+type UnescapedCookieParamError struct {
+	ParamName string
+	Err       error
+}
+
+func (e *UnescapedCookieParamError) Error() string {
+	return fmt.Sprintf("error unescaping cookie parameter '%s'", e.ParamName)
+}
+
+func (e *UnescapedCookieParamError) Unwrap() error {
+	return e.Err
+}
+
+type UnmarshallingParamError struct {
+	ParamName string
+	Err       error
+}
+
+func (e *UnmarshallingParamError) Error() string {
+	return fmt.Sprintf("Error unmarshalling parameter %s as JSON: %s", e.ParamName, e.Err.Error())
+}
+
+func (e *UnmarshallingParamError) Unwrap() error {
+	return e.Err
+}
+
+type RequiredParamError struct {
+	ParamName string
+}
+
+func (e *RequiredParamError) Error() string {
+	return fmt.Sprintf("Query argument %s is required, but not found", e.ParamName)
+}
+
+type RequiredHeaderError struct {
+	ParamName string
+	Err       error
+}
+
+func (e *RequiredHeaderError) Error() string {
+	return fmt.Sprintf("Header parameter %s is required, but not found", e.ParamName)
+}
+
+func (e *RequiredHeaderError) Unwrap() error {
+	return e.Err
+}
+
+type InvalidParamFormatError struct {
+	ParamName string
+	Err       error
+}
+
+func (e *InvalidParamFormatError) Error() string {
+	return fmt.Sprintf("Invalid format for parameter %s: %s", e.ParamName, e.Err.Error())
+}
+
+func (e *InvalidParamFormatError) Unwrap() error {
+	return e.Err
+}
+
+type TooManyValuesForParamError struct {
+	ParamName string
+	Count     int
+}
+
+func (e *TooManyValuesForParamError) Error() string {
+	return fmt.Sprintf("Expected one value for %s, got %d", e.ParamName, e.Count)
+}
+
+// Handler creates http.Handler with routing matching OpenAPI spec.
+func Handler(si ServerInterface) http.Handler {
+	return HandlerWithOptions(si, ChiServerOptions{})
+}
+
+type ChiServerOptions struct {
+	BaseURL          string
+	BaseRouter       chi.Router
+	Middlewares      []MiddlewareFunc
+	ErrorHandlerFunc func(w http.ResponseWriter, r *http.Request, err error)
+}
+
+// HandlerFromMux creates http.Handler with routing matching OpenAPI spec based on the provided mux.
+func HandlerFromMux(si ServerInterface, r chi.Router) http.Handler {
+	return HandlerWithOptions(si, ChiServerOptions{
+		BaseRouter: r,
+	})
+}
+
+func HandlerFromMuxWithBaseURL(si ServerInterface, r chi.Router, baseURL string) http.Handler {
+	return HandlerWithOptions(si, ChiServerOptions{
+		BaseURL:    baseURL,
+		BaseRouter: r,
+	})
+}
+
+// HandlerWithOptions creates http.Handler with additional options
+func HandlerWithOptions(si ServerInterface, options ChiServerOptions) http.Handler {
+	r := options.BaseRouter
+
+	if r == nil {
+		r = chi.NewRouter()
+	}
+	if options.ErrorHandlerFunc == nil {
+		options.ErrorHandlerFunc = func(w http.ResponseWriter, r *http.Request, err error) {
+			http.Error(w, err.Error(), http.StatusBadRequest)
+		}
+	}
+	wrapper := ServerInterfaceWrapper{
+		Handler:            si,
+		HandlerMiddlewares: options.Middlewares,
+		ErrorHandlerFunc:   options.ErrorHandlerFunc,
+	}
+
+	r.Group(func(r chi.Router) {
+		r.Get(options.BaseURL+"/version", wrapper.GetVersion)
+	})
+
+	return r
+}

routers/api/forgejo/v1/root.go

@@ -0,0 +1,14 @@
+// Copyright The Forgejo Authors.
+// SPDX-License-Identifier: MIT
+
+package v1
+
+import (
+	"net/http"
+)
+
+func Root(w http.ResponseWriter, r *http.Request) {
+	// https://www.rfc-editor.org/rfc/rfc8631
+	w.Header().Set("Link", "</assets/forgejo/api.v1.yml>; rel=\"service-desc\"")
+	w.WriteHeader(http.StatusNoContent)
+}

routers/init.go

@@ -31,6 +31,7 @@ import (
 	"code.gitea.io/gitea/modules/util"
 	"code.gitea.io/gitea/modules/web"
 	actions_router "code.gitea.io/gitea/routers/api/actions"
+	forgejo "code.gitea.io/gitea/routers/api/forgejo/v1"
 	packages_router "code.gitea.io/gitea/routers/api/packages"
 	apiv1 "code.gitea.io/gitea/routers/api/v1"
 	"code.gitea.io/gitea/routers/common"
@@ -190,6 +191,7 @@ func NormalRoutes(ctx context.Context) *web.Route {
 
 	r.Mount("/", web_routers.Routes(ctx))
 	r.Mount("/api/v1", apiv1.Routes(ctx))
+	r.Mount("/api/forgejo/v1", forgejo.Routes(ctx))
 	r.Mount("/api/internal", private.Routes())
 
 	if setting.Packages.Enabled {

routers/web/misc/swagger-forgejo.go

@@ -0,0 +1,19 @@
+// Copyright 2017 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package misc
+
+import (
+	"net/http"
+
+	"code.gitea.io/gitea/modules/base"
+	"code.gitea.io/gitea/modules/context"
+)
+
+// tplSwagger swagger page template
+const tplForgejoSwagger base.TplName = "swagger/forgejo-ui"
+
+func SwaggerForgejo(ctx *context.Context) {
+	ctx.Data["APIVersion"] = "v1"
+	ctx.HTML(http.StatusOK, tplForgejoSwagger)
+}

routers/web/web.go

@@ -212,6 +212,7 @@ func Routes(ctx gocontext.Context) *web.Route {
 	if setting.API.EnableSwagger {
 		// Note: The route moved from apiroutes because it's in fact want to render a web page
 		routes.Get("/api/swagger", append(common, misc.Swagger)...) // Render V1 by default
+		routes.Get("/api/forgejo/swagger", append(common, misc.SwaggerForgejo)...)
 	}
 
 	// TODO: These really seem like things that could be folded into Contexter or as helper functions

templates/swagger/forgejo-ui.tmpl

@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<html lang="en">
+	<head>
+		<meta charset="UTF-8">
+		<title>Forgejo API</title>
+		<link href="{{AssetUrlPrefix}}/css/swagger.css?v={{AssetVersion}}" rel="stylesheet">
+	</head>
+	<body>
+		<a class="swagger-back-link" href="{{AppUrl}}">{{svg "octicon-reply"}}{{.locale.Tr "return_to_gitea"}}</a>
+		<div id="swagger-ui" data-source="{{AssetUrlPrefix}}/forgejo/api.{{.APIVersion}}.yml"></div>
+		<script src="{{AssetUrlPrefix}}/js/forgejoswagger.js?v={{AssetVersion}}"></script>
+	</body>
+</html>

tests/integration/api_forgejo_root_test.go

@@ -0,0 +1,21 @@
+// Copyright The Forgejo Authors.
+// SPDX-License-Identifier: MIT
+
+package integration
+
+import (
+	"net/http"
+	"testing"
+
+	"code.gitea.io/gitea/tests"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestAPIForgejoRoot(t *testing.T) {
+	defer tests.PrepareTestEnv(t)()
+
+	req := NewRequest(t, "GET", "/api/forgejo/v1")
+	resp := MakeRequest(t, req, http.StatusNoContent)
+	assert.Contains(t, resp.Header().Get("Link"), "/assets/forgejo/api.v1.yml")
+}

tests/integration/api_forgejo_version_test.go

@@ -0,0 +1,25 @@
+// Copyright The Forgejo Authors.
+// SPDX-License-Identifier: MIT
+
+package integration
+
+import (
+	"net/http"
+	"testing"
+
+	"code.gitea.io/gitea/routers/api/forgejo/v1"
+	"code.gitea.io/gitea/tests"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestAPIForgejoVersion(t *testing.T) {
+	defer tests.PrepareTestEnv(t)()
+
+	req := NewRequest(t, "GET", "/api/forgejo/v1/version")
+	resp := MakeRequest(t, req, http.StatusOK)
+
+	var version v1.Version
+	DecodeJSON(t, resp, &version)
+	assert.Equal(t, "development", *version.Version)
+}

web_src/js/standalone/forgejo-swagger.js

@@ -0,0 +1,22 @@
+import SwaggerUI from 'swagger-ui-dist/swagger-ui-es-bundle.js';
+import 'swagger-ui-dist/swagger-ui.css';
+
+window.addEventListener('load', async () => {
+  const url = document.getElementById('swagger-ui').getAttribute('data-source');
+
+  const ui = SwaggerUI({
+    url: url,
+    dom_id: '#swagger-ui',
+    deepLinking: true,
+    docExpansion: 'none',
+    defaultModelRendering: 'model', // don't show examples by default, because they may be incomplete
+    presets: [
+      SwaggerUI.presets.apis
+    ],
+    plugins: [
+      SwaggerUI.plugins.DownloadUrl
+    ]
+  });
+
+  window.ui = ui;
+});

webpack.config.js

@@ -62,6 +62,10 @@ export default {
     webcomponents: [
 	fileURLToPath(new URL('web_src/js/webcomponents/GiteaOriginUrl.js', import.meta.url)),
     ],
+    forgejoswagger: [ // Forgejo swagger is OpenAPI 3.0.0 and has specific parameters
+	fileURLToPath(new URL('web_src/js/standalone/forgejo-swagger.js', import.meta.url)),
+	fileURLToPath(new URL('web_src/css/standalone/swagger.css', import.meta.url)),
+    ],
     swagger: [
       fileURLToPath(new URL('web_src/js/standalone/swagger.js', import.meta.url)),
       fileURLToPath(new URL('web_src/css/standalone/swagger.css', import.meta.url)),