/* * Copyright 2017-2020 the original author or authors. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * https://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.example; import java.util.HashMap; import java.util.Map; import freemarker.template.Configuration; import freemarker.template.Template; import org.springframework.cloud.gcp.core.GcpProjectIdProvider; import org.springframework.stereotype.Controller; import org.springframework.ui.freemarker.FreeMarkerTemplateUtils; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; /** * Controller to output the firebase javascript file. Used in order to allow injection of environment variables into * client side javascript * * @author Vinicius Carvalho * @since 1.2.2 */ @Controller @RequestMapping("/templates") public class TemplateController { private final Configuration configuration; private final GcpProjectIdProvider gcpProjectIdProvider; private final FirebaseConfig firebaseConfig; public TemplateController(Configuration configuration, GcpProjectIdProvider gcpProjectIdProvider, FirebaseConfig firebaseConfig) { this.configuration = configuration; this.gcpProjectIdProvider = gcpProjectIdProvider; this.firebaseConfig = firebaseConfig; } @GetMapping(value = "/js/app", produces = "application/javascript") public @ResponseBody String appJs() throws Exception { Map<String, Object> model = new HashMap<>(); model.put("projectId", this.gcpProjectIdProvider.getProjectId()); model.put("firebaseConfig", firebaseConfig); Template template = configuration.getTemplate("app.ftl"); String js = FreeMarkerTemplateUtils.processTemplateIntoString(template, model); return js; } }