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//Pekka Helenius <fincer89@hotmail.com>, Fjordtek 2020
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package com.fjordtek.chapter2_task3_friendlist.web;
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import org.springframework.stereotype.Controller;
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import org.springframework.ui.Model;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RequestMethod;
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import org.springframework.web.bind.annotation.RequestParam;
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import org.springframework.http.HttpStatus;
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import org.springframework.web.bind.annotation.ResponseStatus;
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import java.util.ArrayList;
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import javax.servlet.http.HttpServletRequest;
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import javax.validation.Valid;
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import com.fjordtek.chapter2_task3_friendlist.domain.Friend;
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@Controller
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public class FriendController {
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protected static final String landingPageURL = "index";
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private HttpServerLogger httpServerLogger = new HttpServerLogger();
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private HttpExceptionHandler httpExceptionHandler = new HttpExceptionHandler();
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private ArrayList<Friend> friendList = new ArrayList<>();
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// NOTE NOTE
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// We could alternatively use two attributes (firstName & lastName) for names.
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// However, only single query parameter 'friend' must be given, according to the assignment description.
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// Therefore, parse/split it internally.
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// Additionally: Internal, native constraint checks should be used/preferred here.
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private String splitFriendName(@Valid Friend friend, HttpServletRequest requestData) {
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String[] fullNameParts = friend.toString().split(" ");
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if (fullNameParts.length != 2) {
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httpServerLogger.commonError("Invalid name submitted", requestData, friend.toString());
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return "Invalid name";
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} else {
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for (int i = 0; i < fullNameParts.length; i++) {
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if (!fullNameParts[i].matches("^[a-zA-Z]+$")) {
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httpServerLogger.commonError("Invalid name submitted", requestData, "Error in string", fullNameParts[i]);
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return "Invalid name";
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}
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fullNameParts[i] = fullNameParts[i].substring(0,1).toUpperCase() + fullNameParts[i].substring(1);
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}
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String name = fullNameParts[0].trim() + ' ' + fullNameParts[1].trim();
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friend.setFullName(name);
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// Ref: https://stackoverflow.com/questions/18852059/java-list-containsobject-with-field-value-equal-to-x
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// Ref: https://knpcode.com/java/variable-scope-java-lambda-expression/
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// Ref: https://www.geeksforgeeks.org/stream-anymatch-java-examples/
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if (!this.friendList.stream().anyMatch(obj -> friend.getFullName().equals(obj.getFullName()))) {
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this.friendList.add(friend);
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return "Name OK";
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} else {
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return "Name already in the list";
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}
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}
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}
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@RequestMapping(
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value = landingPageURL,
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method = RequestMethod.GET
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)
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public String FriendWebFormGet(
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@RequestParam(
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value = "friend",
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required = false
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) @Valid Friend friend,
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Model dataModel,
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HttpServletRequest requestData
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)
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{
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if (friend != null) {
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dataModel.addAttribute("formvalidation", this.splitFriendName(friend, requestData));
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}
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dataModel.addAttribute("friend", friend);
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dataModel.addAttribute("friends", this.friendList);
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httpServerLogger.logMessageNormal(
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requestData,
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"HTTPOK"
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);
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return landingPageURL;
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}
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// Redirect
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@RequestMapping(
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value = "/",
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method = RequestMethod.GET
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)
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@ResponseStatus(HttpStatus.FOUND)
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public String redirectToFriendWebForm() {
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return "redirect:" + landingPageURL;
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}
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// Other URL requests
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@RequestMapping(
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value = "*",
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method = { RequestMethod.GET, RequestMethod.POST }
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)
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public String ErrorWebForm(HttpServletRequest requestData) {
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return httpExceptionHandler.notFoundErrorHandler(requestData);
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}
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// NOTE: No POST method implementation here since assignment description required *GET method use only*
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}
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