[MM-25657] api4/config: add config migrate endpoint (#14928)

* api4/config: add config migrate endpoint

* api4/config: reflect review comments

* fix i18n lint error

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

api4/config.go

@@ -20,6 +20,7 @@ func (api *API) InitConfig() {
 	api.BaseRoutes.ApiRoot.Handle("/config/reload", api.ApiSessionRequired(configReload)).Methods("POST")
 	api.BaseRoutes.ApiRoot.Handle("/config/client", api.ApiHandler(getClientConfig)).Methods("GET")
 	api.BaseRoutes.ApiRoot.Handle("/config/environment", api.ApiSessionRequired(getEnvironmentConfig)).Methods("GET")
+	api.BaseRoutes.ApiRoot.Handle("/config/migrate", api.ApiSessionRequired(migrateConfig)).Methods("POST")
 }
 
 func getConfig(c *Context, w http.ResponseWriter, r *http.Request) {
@@ -227,3 +228,36 @@ func patchConfig(c *Context, w http.ResponseWriter, r *http.Request) {
 	w.Header().Set("Cache-Control", "no-cache, no-store, must-revalidate")
 	w.Write([]byte(c.App.GetSanitizedConfig().ToJson()))
 }
+
+func migrateConfig(c *Context, w http.ResponseWriter, r *http.Request) {
+	props := model.StringInterfaceFromJson(r.Body)
+	from, ok := props["from"].(string)
+	if !ok {
+		c.SetInvalidParam("from")
+		return
+	}
+	to, ok := props["to"].(string)
+	if !ok {
+		c.SetInvalidParam("to")
+		return
+	}
+
+	auditRec := c.MakeAuditRecord("migrateConfig", audit.Fail)
+	auditRec.AddMeta("from", from)
+	auditRec.AddMeta("to", to)
+	defer c.LogAuditRec(auditRec)
+
+	if !c.App.SessionHasPermissionTo(*c.App.Session(), model.PERMISSION_MANAGE_SYSTEM) {
+		c.SetPermissionError(model.PERMISSION_MANAGE_SYSTEM)
+		return
+	}
+
+	err := config.Migrate(from, to)
+	if err != nil {
+		c.Err = model.NewAppError("migrateConfig", "api.config.migrate_config.app_error", nil, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	auditRec.Success()
+	ReturnStatusOK(w)
+}