Develop triangle

jdk_21_maven/cs/web/triangle-ssr/pom.xml

@@ -1 +1,58 @@
-TODO replace me
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>3.4.3</version>
+        <relativePath/> <!-- lookup parent from repository -->
+    </parent>
+    <groupId>com.example</groupId>
+    <artifactId>triangle-ssr</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>TriangleSSR</name>
+    <description>TriangleSSR</description>
+    <url/>
+    <licenses>
+        <license/>
+    </licenses>
+    <developers>
+        <developer/>
+    </developers>
+    <scm>
+        <connection/>
+        <developerConnection/>
+        <tag/>
+        <url/>
+    </scm>
+    <properties>
+        <java.version>21</java.version>
+    </properties>
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-thymeleaf</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>

jdk_21_maven/cs/web/triangle-ssr/src/main/java/com/example/springmvcdocker/FormController.java

@@ -0,0 +1,62 @@
+package com.example.springmvcdocker;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+@Controller
+public class FormController {
+
+    @GetMapping("/")
+    public String showForm() {
+        return "index";
+    }
+
+    @PostMapping("/process")
+    public String processForm(
+            @RequestParam("a") int a,
+            @RequestParam("b") int b,
+            @RequestParam("c") int c)
+    {
+        int value = TriangleClassification.classify(a, b, c);
+        String triangleType = getTriangleType(value);
+        return "redirect:/" + triangleType.toLowerCase().replace(" ", "-");
+    }
+
+    @RequestMapping("/not-a-triangle")
+    public String notATriangle(Model model) {
+        model.addAttribute("output", "The input does not form a triangle.");
+        return "notTriangle";
+    }
+
+    @RequestMapping("/scalene-triangle")
+    public String scaleneTriangle(Model model) {
+        model.addAttribute("output", "This is a Scalene triangle.");
+        return "scalene";
+    }
+
+    @RequestMapping("/isosceles-triangle")
+    public String isoscelesTriangle(Model model) {
+        model.addAttribute("output", "This is an Isosceles triangle.");
+        return "isosceles";
+    }
+
+    @RequestMapping("/equilateral-triangle")
+    public String equilateralTriangle(Model model) {
+        model.addAttribute("output", "This is an Equilateral triangle.");
+        return "equilateral";
+    }
+
+    public static String getTriangleType(int value) {
+        switch (value) {
+            case 0: return "Not a triangle";
+            case 1: return "Scalene triangle";
+            case 2: return "Isosceles triangle";
+            case 3: return "Equilateral triangle";
+            default: return "Invalid input";
+        }
+    }
+}

jdk_21_maven/cs/web/triangle-ssr/src/main/java/com/example/springmvcdocker/TriangleClassification.java

@@ -0,0 +1,29 @@
+package com.example.springmvcdocker;
+
+public class TriangleClassification {
+
+    public static int classify(int a, int b, int c) {
+
+        if (a <= 0 || b <= 0 || c <= 0) {
+            return 0;
+        }
+
+        if (a == b && b == c) {
+            return 3;
+        }
+
+        int max = Math.max(a, Math.max(b, c));
+
+        if ((max == a && max - b - c >= 0) ||
+                (max == b && max - a - c >= 0) ||
+                (max == c && max - a - b >= 0)) {
+            return 0;
+        }
+
+        if (a == b || b == c || a == c) {
+            return 2;
+        } else {
+            return 1;
+        }
+    }
+}

jdk_21_maven/cs/web/triangle-ssr/src/main/java/com/example/springmvcdocker/TriangleSSRApplication.java

@@ -0,0 +1,11 @@
+package com.example.springmvcdocker;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class TriangleSSRApplication {
+    public static void main(String[] args) {
+        SpringApplication.run(TriangleSSRApplication.class, args);
+    }
+}

jdk_21_maven/cs/web/triangle-ssr/src/main/resources/templates/equilateral.html

@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html xmlns:th="http://www.thymeleaf.org">
+<head>
+  <title>Equilateral Triangle</title>
+</head>
+<body>
+<h2><span th:text="${output}"></span></h2>
+<a href="/"> << Go back</a>
+</body>
+</html>

jdk_21_maven/cs/web/triangle-ssr/src/main/resources/templates/index.html

@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<html xmlns:th="http://www.thymeleaf.org">
+<head>
+    <title>SUT</title>
+</head>
+<body>
+<h1>Spring MVC test app</h1>
+<h2>Triangle classification</h2>
+<h2>Enter side values:</h2>
+<form action="/process" method="post">
+    <label for="a">Side A:</label>
+    <input type="number" id="a" name="a" required><br><br>
+
+    <label for="b">Side B:</label>
+    <input type="number" id="b" name="b" required><br><br>
+
+    <label for="c">Side C:</label>
+    <input type="number" id="c" name="c" required><br><br>
+
+    <button type="submit">Submit</button>
+</form>
+</body>
+</html>

jdk_21_maven/cs/web/triangle-ssr/src/main/resources/templates/isosceles.html

@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html xmlns:th="http://www.thymeleaf.org">
+<head>
+  <title>Isosceles Triangle</title>
+</head>
+<body>
+<h2><span th:text="${output}"></span></h2>
+<a href="/"> << Go back</a>
+</body>
+</html>

jdk_21_maven/cs/web/triangle-ssr/src/main/resources/templates/notTriangle.html

@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html xmlns:th="http://www.thymeleaf.org">
+<head>
+  <title>Not a Triangle</title>
+</head>
+<body>
+<h2><span th:text="${output}"></span></h2>
+<a href="/"> << Go back</a>
+</body>
+</html>

jdk_21_maven/cs/web/triangle-ssr/src/main/resources/templates/scalene.html

@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html xmlns:th="http://www.thymeleaf.org">
+<head>
+  <title>Scalene Triangle</title>
+</head>
+<body>
+<h2><span th:text="${output}"></span></h2>
+<a href="/"> << Go back</a>
+</body>
+</html>