Add OAuth2 provider listing and conversion functions

modules/structs/auth_oauth2.go

@@ -4,6 +4,12 @@
 
 package structs
 
+type AuthOauth2Option struct {
+	SourceID           int64  `json:"source_id"`
+	AuthenticationName string `json:"authentication_name" binding:"Required"`
+	ProviderIconURL    string `json:"provider_icon_url"`
+}
+
 // CreateUserOption create user options
 type CreateAuthOauth2Option struct {
 	AuthenticationName       string `json:"authentication_name" binding:"Required"`

routers/api/v1/admin/auth_oauth.go

@@ -11,10 +11,14 @@ import (
 
 	auth_model "code.gitea.io/gitea/models/auth"
 	api "code.gitea.io/gitea/modules/structs"
+	"code.gitea.io/gitea/routers/api/v1/utils"
 
+	"code.gitea.io/gitea/models/auth"
+	"code.gitea.io/gitea/models/db"
 	"code.gitea.io/gitea/modules/web"
 	"code.gitea.io/gitea/services/auth/source/oauth2"
 	"code.gitea.io/gitea/services/context"
+	"code.gitea.io/gitea/services/convert"
 )
 
 // CreateOauthAuth create a new external authentication for oauth2
@@ -77,5 +81,22 @@ func DeleteOauthAuth(ctx *context.APIContext) {
 
 // // SearchOauthAuth API for getting information of the configured authentication methods according the filter conditions
 func SearchOauthAuth(ctx *context.APIContext) {
+	listOptions := utils.GetListOptions(ctx)
 
+	authSources, maxResults, err := db.FindAndCount[auth.Source](ctx, auth.FindSourcesOptions{})
+	// fmt.Printf("Count: %d, models: %v, err: %v", count, models[0].Name, err)
+
+	if err != nil {
+		ctx.APIErrorInternal(err)
+		return
+	}
+
+	results := make([]*api.AuthOauth2Option, len(authSources))
+	for i := range authSources {
+		results[i] = convert.ToOauthProvider(ctx, authSources[i])
+	}
+
+	ctx.SetLinkHeader(int(maxResults), listOptions.PageSize)
+	ctx.SetTotalCountHeader(maxResults)
+	ctx.JSON(http.StatusOK, &results)
 }

routers/api/v1/api.go

@@ -1650,6 +1650,7 @@ func Routes() *web.Router {
 
 		m.Group("/admin", func() {
 			m.Group("/identity-auth", func() {
+				m.Get("", admin.SearchOauthAuth)
 				m.Post("/new", admin.CreateOauthAuth)
 			})
 

services/convert/auth_oauth.go

@@ -0,0 +1,37 @@
+// // Copyright 2020 The Gitea Authors. All rights reserved.
+// // SPDX-License-Identifier: MIT
+
+package convert
+
+import (
+	"context"
+
+	auth_model "code.gitea.io/gitea/models/auth"
+	api "code.gitea.io/gitea/modules/structs"
+)
+
+// ToUser convert user_model.User to api.User
+// if doer is set, private information is added if the doer has the permission to see it
+func ToOauthProvider(ctx context.Context, provider *auth_model.Source) *api.AuthOauth2Option {
+	if provider == nil {
+		return nil
+	}
+
+	return toOauthProvider(ctx, provider)
+}
+
+// ToUsers convert list of user_model.User to list of api.User
+func ToOauthProviders(ctx context.Context, provider []*auth_model.Source) []*api.AuthOauth2Option {
+	result := make([]*api.AuthOauth2Option, len(provider))
+	for i := range provider {
+		result[i] = ToOauthProvider(ctx, provider[i])
+	}
+	return result
+}
+
+func toOauthProvider(ctx context.Context, provider *auth_model.Source) *api.AuthOauth2Option {
+	return &api.AuthOauth2Option{
+		SourceID:           provider.ID,
+		AuthenticationName: provider.Name,
+	}
+}