[API] Forgejo API /api/forgejo/v1

(cherry picked from commit 20b56692693e054bb3c04b4ef12b29b0715b4530)
(cherry picked from commit 1574643a6a9634e5b92c033a4bfb69062a86bd05)

Update semantic version according to specification

(cherry picked from commit 22510f41306f9c133a7e99b61f9c38dabfd4b810)

Mise à jour de 'Makefile'

(cherry picked from commit c3d85d8409f1bb18a45659a167cf1ffee057f3b6)
(cherry picked from commit 5ea23098513c068444226af41faf9be9c4c998e6)
(cherry picked from commit ec5217b9d1b94bb04e34ce8c27eecbdc6f3a247a)
(cherry picked from commit 14f08e364b2ad7e3176b45d3ec8da5f5605b4315)
(cherry picked from commit b4465c67b8737aed9fd79a43046aa3795a298e68)

[API] [SEMVER] replace number with version

(cherry picked from commit fba48e64977a75e77c9c6cf8e3f8a679a5e7b733)
(cherry picked from commit 532ec5d8782703b62d7d02312764e50637cd016e)

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

(cherry picked from commit 01ca3a4f4291cf4c62df42cbd12a00638f3cdc70)
(cherry picked from commit 1d928c3ab2e1fda6082e1400d89ea96d6605ebaa)
(cherry picked from commit a39dc804cd1da86444ed709455857f069475e7db)

Conflicts:
	webpack.config.js
(cherry picked from commit adc68578b3eb41215338125edfca91804706f8a1)
(cherry picked from commit 9b8d98475fd7efcc15bf0d91b0af6ef3aff64508)
(cherry picked from commit 25161039745a63282257eded9616390241af8013)
(cherry picked from commit 18e6287963a0e1863cd08fd514a4e732a1904a68)
(cherry picked from commit e9694e67ab93ad74f7eae3152d88d95e8493e739)
(cherry picked from commit a9763edaf002c8009a2cca4115cb8b926f8cdc85)
(cherry picked from commit e2b550f4fba144f9637a212b56bfe30cac1adb3b)

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
@@ -229,6 +234,8 @@ 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 " - go-licenses                      regenerate go licenses"
@@ -314,6 +321,27 @@ 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)
 
@@ -344,7 +372,7 @@ 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"
@@ -181,6 +182,7 @@ 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

@@ -160,6 +160,7 @@ func Routes(ctx gocontext.Context) *web.Route {
 	if setting.API.EnableSwagger {
 		// Note: The route is here but no in API routes because it renders a web page
 		routes.Get("/api/swagger", append(mid, misc.Swagger)...) // Render V1 by default
+		routes.Get("/api/forgejo/swagger", append(mid, 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

@@ -58,6 +58,10 @@ export default {
     webcomponents: [
       fileURLToPath(new URL('web_src/js/webcomponents/webcomponents.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)),