API: Expose its limitation settings (#12714)

* API: Expose its limitation settings

* TESTs

Co-authored-by: zeripath <art27@cantab.net>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>

routers/api/v1/api.go

@@ -521,6 +521,7 @@ func RegisterRoutes(m *macaron.Macaron) {
 		m.Post("/markdown/raw", misc.MarkdownRaw)
 		m.Group("/settings", func() {
 			m.Get("/ui", settings.GetGeneralUISettings)
+			m.Get("/api", settings.GetGeneralAPISettings)
 			m.Get("/repository", settings.GetGeneralRepoSettings)
 		})
 

routers/api/v1/settings/settings.go

@@ -27,6 +27,24 @@ func GetGeneralUISettings(ctx *context.APIContext) {
 	})
 }
 
+// GetGeneralAPISettings returns instance's global settings for api
+func GetGeneralAPISettings(ctx *context.APIContext) {
+	// swagger:operation GET /settings/api settings getGeneralAPISettings
+	// ---
+	// summary: Get instance's global settings for api
+	// produces:
+	// - application/json
+	// responses:
+	//   "200":
+	//     "$ref": "#/responses/GeneralAPISettings"
+	ctx.JSON(http.StatusOK, api.GeneralAPISettings{
+		MaxResponseItems:       setting.API.MaxResponseItems,
+		DefaultPagingNum:       setting.API.DefaultPagingNum,
+		DefaultGitTreesPerPage: setting.API.DefaultGitTreesPerPage,
+		DefaultMaxBlobSize:     setting.API.DefaultMaxBlobSize,
+	})
+}
+
 // GetGeneralRepoSettings returns instance's global settings for repositories
 func GetGeneralRepoSettings(ctx *context.APIContext) {
 	// swagger:operation GET /settings/repository settings getGeneralRepositorySettings

routers/api/v1/swagger/settings.go

@@ -19,3 +19,10 @@ type swaggerResponseGeneralUISettings struct {
 	// in:body
 	Body api.GeneralUISettings `json:"body"`
 }
+
+// GeneralAPISettings
+// swagger:response GeneralAPISettings
+type swaggerResponseGeneralAPISettings struct {
+	// in:body
+	Body api.GeneralAPISettings `json:"body"`
+}