/* 
 * 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
 *
 *      http://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 org.ngrinder.operation.cotroller;

import org.ngrinder.common.controller.NGrinderBaseController;
import org.ngrinder.common.controller.RestAPI;
import org.ngrinder.operation.service.SystemConfigService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpEntity;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;

import static org.ngrinder.common.util.Preconditions.checkNotEmpty;

/**
 * System configuration controller.
 *
 * @author Alex Qin
 * @since 3.1
 */
@Controller
@RequestMapping("/operation/system_config")
@PreAuthorize("hasAnyRole('A')")
public class SystemConfigController extends NGrinderBaseController {

	@Autowired
	private SystemConfigService systemConfigService;

	/**
	 * Open the system configuration editor.
	 *
	 * @param model model
	 * @return operation/system_config
	 */
	@RequestMapping("")
	public String get(Model model) {
		model.addAttribute("content", systemConfigService.getSystemConfig());
		return "operation/system_config";
	}

	/**
	 * Save the system configuration.
	 *
	 * @param model   model
	 * @param content system configuration content to be saved
	 * @return operation/system_config
	 */
	@RequestMapping("/save")
	public String save(Model model, @RequestParam final String content) {
		model.addAttribute("success", systemConfigService.saveSystemConfig(content));
		return get(model);
	}

	/**
	 * Save the system configuration.
	 *
	 * @param model   model
	 * @param content system configuration content to be saved
	 * @return true if succeeded
	 */
	@RestAPI
	@RequestMapping(value = "api/save", method = RequestMethod.POST)
	public HttpEntity<String> save(@RequestParam final String content) {
		systemConfigService.saveSystemConfig(checkNotEmpty(content, "content should be " +
				"passed as parameter"));
		return successJsonHttpEntity();
	}
}

/* 
 * 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
 *
 *      http://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 org.ngrinder.operation.cotroller;

import org.ngrinder.common.controller.NGrinderBaseController;
import org.ngrinder.common.controller.RestAPI;
import org.ngrinder.operation.service.SystemConfigService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpEntity;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;

import static org.ngrinder.common.util.Preconditions.checkNotEmpty;

/**
 * System configuration controller.
 *
 * @author Alex Qin
 * @since 3.1
 */
@Controller
@RequestMapping("/operation/system_config")
@PreAuthorize("hasAnyRole('A')")
public class SystemConfigController extends NGrinderBaseController {

	@Autowired
	private SystemConfigService systemConfigService;

	/**
	 * Open the system configuration editor.
	 *
	 * @param model model
	 * @return operation/system_config
	 */
	@RequestMapping("")
	public String get(Model model) {
		model.addAttribute("content", systemConfigService.getSystemConfig());
		return "operation/system_config";
	}


	/**
	 * Save the system configuration.
	 *
	 * @param model   model
	 * @param content system configuration content to be saved
	 * @return operation/system_config
	 */
	@RequestMapping("/save")
	public String save(Model model, @RequestParam final String content) {
		model.addAttribute("success", systemConfigService.saveSystemConfig(content));
		return get(model);
	}


	/**
	 * Get the system configuration.
	 *
	 * @return system configuration
	 */
	@RestAPI
	@RequestMapping(value = "/api", method = RequestMethod.GET)
	public HttpEntity<String> get() {
		return toJsonHttpEntity(systemConfigService.getSystemConfig());
	}

	/**
	 * Save the system configuration.
	 *
	 * @param model   model
	 * @param content system configuration content to be saved
	 * @return true if succeeded
	 */
	@RestAPI
	@RequestMapping(value = "/api", method = RequestMethod.POST)
	public HttpEntity<String> save(@RequestParam(required = true) final String content) {
		systemConfigService.saveSystemConfig(checkNotEmpty(content, "content should be " +
				"passed as parameter"));
		return successJsonHttpEntity();
	}
}

Enhance architecture to provide full REST APIs