Initial commit

.devcontainer/devcontainer.json

@@ -0,0 +1,28 @@
+// For format details, see https://aka.ms/devcontainer.json. For config options, see the
+// README at: https://github.com/devcontainers/templates/tree/main/src/docker-existing-dockerfile
+{
+	"name": "Existing Dockerfile",
+	"build": {
+		// Sets the run context to one level up instead of the .devcontainer folder.
+		"context": "..",
+		// Update the 'dockerFile' property if you aren't using the standard 'Dockerfile' filename.
+		"dockerfile": "../Dockerfile"
+	},
+	"customizations": {
+		"vscode": {
+			"extensions": [
+				"ms-azuretools.vscode-containers"
+			]
+		}
+	}
+	// Features to add to the dev container. More info: https://containers.dev/features.
+	// "features": {},
+	// Use 'forwardPorts' to make a list of ports inside the container available locally.
+	// "forwardPorts": [],
+	// Uncomment the next line to run commands after the container is created.
+	// "postCreateCommand": "cat /etc/os-release",
+	// Configure tool-specific properties.
+	// "customizations": {},
+	// Uncomment to connect as an existing user other than the container default. More info: https://aka.ms/dev-containers-non-root.
+	// "remoteUser": "devcontainer"
+}

.gitattributes

@@ -0,0 +1,3 @@
+/gradlew text eol=lf
+*.bat text eol=crlf
+*.jar binary

.gitignore

@@ -0,0 +1,37 @@
+HELP.md
+.gradle
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/

Dockerfile

@@ -0,0 +1,9 @@
+FROM --platform=linux/amd64 openjdk:21
+
+WORKDIR /app
+
+COPY ./build/libs/ilp-coursework-0.0.1-SNAPSHOT.jar app.jar
+
+EXPOSE 8080
+
+ENTRYPOINT ["java", "-jar", "app.jar"]

Makefile

@@ -0,0 +1,57 @@
+# Makefile
+
+# --- Variables ---
+IMAGE_NAME      := ilp-coursework
+IMAGE_TAG       := 0.1
+FULL_IMAGE_NAME := ${IMAGE_NAME}:${IMAGE_TAG}
+CONTAINER_NAME  := ilp-coursework-app
+SUBMISSION_FILE := ilp_submission_image.tar
+
+
+# --- Targets ---
+
+# Default command
+.PHONY: all
+all: save
+
+.PHONY: build
+build:
+	./gradlew build
+
+.PHONY: docker-build
+docker-build: build
+	podman build -t ${FULL_IMAGE_NAME} .
+
+# Run the container in detached mode.
+# It will first stop and remove any existing container with the same name.
+.PHONY: run
+run: docker-build
+	@echo "Stopping and removing old container if it exists..."
+# 	-podman stop ${CONTAINER_NAME} > /dev/null 2>&1 || true
+# 	-podman rm ${CONTAINER_NAME} > /dev/null 2>&1 || true
+	podman-compose stop
+	@echo "Starting new container '${CONTAINER_NAME}' on http://localhost:8080"
+	podman-compose up -d
+
+.PHONY: stop
+stop:
+	@echo "Stopping and removing container: ${CONTAINER_NAME}"
+# 	-podman stop ${CONTAINER_NAME} > /dev/null 2>&1 || true
+# 	-podman rm ${CONTAINER_NAME} > /dev/null 2>&1 || true
+	podman-compose stop > /dev/null 2>&1 || true
+
+
+# --- Submission Target ---
+
+.PHONY: save
+save: docker-build
+	podman save -o ${SUBMISSION_FILE} ${FULL_IMAGE_NAME}
+	@echo "Submission file '${SUBMISSION_FILE}' created successfully."
+
+
+# --- Utility Target ---
+
+.PHONY: clean
+clean:
+	./gradlew clean
+	-rm -f ${SUBMISSION_FILE}

build.gradle

@@ -0,0 +1,31 @@
+plugins {
+	id 'java'
+	id 'org.springframework.boot' version '3.5.6'
+	id 'io.spring.dependency-management' version '1.1.7'
+}
+
+group = 'io.github.js0ny'
+version = '0.0.1-SNAPSHOT'
+description = 'Demo project for Spring Boot'
+
+java {
+	toolchain {
+		languageVersion = JavaLanguageVersion.of(21)
+	}
+}
+
+repositories {
+	mavenCentral()
+}
+
+dependencies {
+	implementation 'org.springframework.boot:spring-boot-starter-web'
+	testImplementation 'org.springframework.boot:spring-boot-starter-test'
+	testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
+	implementation 'org.springframework.boot:spring-boot-starter-actuator'
+
+}
+
+tasks.named('test') {
+	useJUnitPlatform()
+}

compose.yaml

@@ -0,0 +1,8 @@
+# compose.yaml
+services:
+  app:
+    build: .
+    image: ilp-coursework:0.1
+    container_name: ilp-coursework-app
+    ports:
+      - "8080:8080"

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.14.3-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

@@ -0,0 +1,251 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original 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.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH="\\\"\\\""
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"

gradlew.bat

@@ -0,0 +1,94 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+@rem SPDX-License-Identifier: Apache-2.0
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

settings.gradle

@@ -0,0 +1 @@
+rootProject.name = 'ilp-coursework'

src/main/java/io/github/js0ny/ilp_coursework/IlpCourseworkApplication.java

@@ -0,0 +1,13 @@
+package io.github.js0ny.ilp_coursework;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class IlpCourseworkApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(IlpCourseworkApplication.class, args);
+	}
+
+}

src/main/java/io/github/js0ny/ilp_coursework/controller/ApiController.java

@@ -0,0 +1,57 @@
+package io.github.js0ny.ilp_coursework.controller;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import io.github.js0ny.ilp_coursework.dto.DistanceRequestDto;
+import io.github.js0ny.ilp_coursework.dto.LngLatDto;
+import io.github.js0ny.ilp_coursework.dto.MovementRequestDto;
+import io.github.js0ny.ilp_coursework.dto.RegionCheckRequestDto;
+import io.github.js0ny.ilp_coursework.service.GpsCalculationService;
+
+@RestController
+@RequestMapping("/api/v1")
+public class ApiController {
+
+    private final String myUid = "s2522255";
+    private final GpsCalculationService gpsService;
+
+    public ApiController(GpsCalculationService gpsService) {
+        this.gpsService = gpsService;
+    }
+
+    @GetMapping("/uid")
+    public String getUid() {
+        return myUid;
+    }
+
+    @PostMapping("/distanceTo")
+    public double getDistance(@RequestBody DistanceRequestDto request) {
+
+        LngLatDto position1 = request.position1();
+        LngLatDto position2 = request.position2();
+        return gpsService.calculateDistance(position1, position2);
+    }
+
+    @PostMapping("/isCloseTo")
+    public boolean getIsCloseTo(@RequestBody DistanceRequestDto request) {
+        LngLatDto position1 = request.position1();
+        LngLatDto position2 = request.position2();
+        return gpsService.isCloseTo(position1, position2);
+    }
+
+    @PostMapping("/nextPosition")
+    public LngLatDto getNextPosition(@RequestBody MovementRequestDto request) {
+        LngLatDto start = request.start();
+        double angle = request.angle();
+        return gpsService.nextPosition(start, angle);
+    }
+
+    @PostMapping("/isInRegion")
+    public boolean getIsInRegion(@RequestBody RegionCheckRequestDto request) {
+        return true;
+    }
+}

src/main/java/io/github/js0ny/ilp_coursework/dto/DistanceRequestDto.java

@@ -0,0 +1,4 @@
+package io.github.js0ny.ilp_coursework.dto;
+
+public record DistanceRequestDto(LngLatDto position1, LngLatDto position2) {
+}

src/main/java/io/github/js0ny/ilp_coursework/dto/LngLatDto.java

@@ -0,0 +1,5 @@
+package io.github.js0ny.ilp_coursework.dto;
+
+public record LngLatDto(double lng, double lat) {
+
+}

src/main/java/io/github/js0ny/ilp_coursework/dto/MovementRequestDto.java

@@ -0,0 +1,8 @@
+package io.github.js0ny.ilp_coursework.dto;
+
+/**
+ * Represents the data transfer object for a movement action request.
+ * Used for endpoint: `/api/v1/nextPosition`
+ */
+public record MovementRequestDto(LngLatDto start, double angle) {
+}

src/main/java/io/github/js0ny/ilp_coursework/dto/RegionCheckRequestDto.java

@@ -0,0 +1,5 @@
+package io.github.js0ny.ilp_coursework.dto;
+
+public record RegionCheckRequestDto(LngLatDto position) {
+
+}

src/main/java/io/github/js0ny/ilp_coursework/dto/RegionDto.java

@@ -0,0 +1,19 @@
+package io.github.js0ny.ilp_coursework.dto;
+
+import java.util.List;
+import java.util.Objects;
+
+public record RegionDto(String name, List<LngLatDto> vertices) {
+
+    public boolean isClose() {
+        // Magic number 4: For a polygon, 3 edges is required.
+        // In this dto, edges + 1 vertices is required.
+        if (vertices == null || vertices.size() < 4) {
+            return false;
+        }
+        LngLatDto first = vertices.get(0);
+        LngLatDto last = vertices.get(vertices.size() - 1);
+        return Objects.equals(last, first);
+    }
+
+}

src/main/java/io/github/js0ny/ilp_coursework/exception/GlobalExceptionHandler.java

@@ -0,0 +1,5 @@
+package io.github.js0ny.ilp_coursework.exception;
+
+public class GlobalExceptionHandler {
+
+}

src/main/java/io/github/js0ny/ilp_coursework/service/GpsCalculationService.java

@@ -0,0 +1,30 @@
+package io.github.js0ny.ilp_coursework.service;
+
+import org.springframework.stereotype.Service;
+
+import io.github.js0ny.ilp_coursework.dto.LngLatDto;
+
+@Service
+public class GpsCalculationService {
+    private static final double STEP = 0.00015;
+    private static final double CLOSE_THRESHOLD = STEP;
+
+    public double calculateDistance(LngLatDto position1, LngLatDto position2) {
+        double lngDistance = position2.lng() - position1.lng();
+        double latDistance = position2.lat() - position1.lat();
+        return Math.sqrt(lngDistance * lngDistance + latDistance * latDistance);
+    }
+
+    public boolean isCloseTo(LngLatDto position1, LngLatDto position2) {
+        double distance = calculateDistance(position1, position2);
+        return distance < CLOSE_THRESHOLD;
+    }
+
+    public LngLatDto nextPosition(LngLatDto start, double angle) {
+        double rad = Math.toRadians(angle);
+        double newLng = Math.cos(rad) * STEP + start.lng();
+        double newLat = Math.sin(rad) * STEP + start.lat();
+        return new LngLatDto(newLng, newLat);
+    }
+
+}

src/main/resources/application.properties

@@ -0,0 +1 @@
+spring.application.name=ilp-coursework

src/test/java/io/github/js0ny/ilp_coursework/IlpCourseworkApplicationTests.java

@@ -0,0 +1,13 @@
+package io.github.js0ny.ilp_coursework;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class IlpCourseworkApplicationTests {
+
+	@Test
+	void contextLoads() {
+	}
+
+}