Implement all endpoints

bin/.gitignore

@@ -0,0 +1,2 @@
+/main/
+/test/

build.gradle

@@ -0,0 +1,26 @@
+plugins {
+	id 'org.springframework.boot' version '2.3.1.RELEASE'
+	id 'io.spring.dependency-management' version '1.0.9.RELEASE'
+	id 'java'
+}
+
+group = 'com.example'
+version = '0.0.1-SNAPSHOT'
+sourceCompatibility = '1.8'
+
+repositories {
+	mavenCentral()
+}
+
+dependencies {
+	implementation 'org.springframework.boot:spring-boot-starter-web'
+	testImplementation('org.springframework.boot:spring-boot-starter-test') {
+		exclude group: 'org.junit.vintage', module: 'junit-vintage-engine'
+	}
+	compile('org.springframework.boot:spring-boot-starter-data-jpa:2.0.0.RELEASE')
+	runtime('mysql:mysql-connector-java:8.0.21')
+}
+
+test {
+	useJUnitPlatform()
+}

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.4.1-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

@@ -0,0 +1,185 @@
+#!/usr/bin/env sh
+
+#
+# Copyright 2015 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.
+#
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# 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: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=`expr $i + 1`
+    done
+    case $i in
+        0) set -- ;;
+        1) set -- "$args0" ;;
+        2) set -- "$args0" "$args1" ;;
+        3) set -- "$args0" "$args1" "$args2" ;;
+        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=`save "$@"`
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+exec "$JAVACMD" "$@"

gradlew.bat

@@ -0,0 +1,104 @@
+@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
+
+@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=.
+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%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="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!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

settings.gradle

@@ -0,0 +1 @@
+rootProject.name = 'user-database-checkpoint'

src/main/java/com/example/demo/DemoApplication.java

@@ -0,0 +1,13 @@
+package com.example.demo;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class DemoApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(DemoApplication.class, args);
+	}
+
+}

src/main/java/com/example/demo/User.java

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+package com.example.demo;
+
+import java.lang.reflect.Field;
+import java.util.Arrays;
+import java.util.Date;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.Table;
+
+import com.fasterxml.jackson.annotation.JsonFormat;
+import com.fasterxml.jackson.annotation.JsonInclude;
+
+@Entity
+@Table(name="users")
+@JsonInclude(JsonInclude.Include.NON_NULL)
+public class User {
+	@Id
+	@GeneratedValue(strategy=GenerationType.IDENTITY)
+	Long id;
+	
+	String password;
+	String email;
+	public Long getId() {
+		return id;
+	}
+	public void setId(Long id) {
+		this.id = id;
+	}
+	public String getPassword() {
+		return password;
+	}
+	public void setPassword(String password) {
+		this.password = password;
+	}
+	public String getEmail() {
+		return email;
+	}
+	public void setEmail(String email) {
+		this.email = email;
+	}
+	public User stripPassword() {
+		password=null;
+		return this;
+	}
+	public User patchProperties(User patchUser) {
+		for (Field f : this.getClass().getDeclaredFields()) {
+			try {
+				if (patchUser.getClass().getDeclaredField(f.getName())!=null 
+						&&  patchUser.getClass().getDeclaredField(f.getName()).get(patchUser)!=null) {
+					f.set(this, patchUser.getClass().getDeclaredField(f.getName()).get(patchUser));
+				}
+			} catch (NoSuchFieldException | SecurityException | IllegalArgumentException | IllegalAccessException e) {
+				e.printStackTrace();
+			}
+		}
+		return this;
+	}
+}

src/main/java/com/example/demo/UserController.java

@@ -0,0 +1,260 @@
+package com.example.demo;
+
+import org.springframework.format.annotation.DateTimeFormat;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PatchMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.fasterxml.jackson.annotation.JsonFormat;
+import com.fasterxml.jackson.annotation.JsonInclude;
+
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.net.ConnectException;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.nio.channels.Channels;
+import java.nio.channels.ReadableByteChannel;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+
+import javax.imageio.ImageIO;
+import javax.websocket.server.PathParam;
+
+@RestController
+public class UserController {
+	
+	UserRepository database;
+	
+	public UserController(UserRepository database) {
+		this.database=database;
+	}
+	
+	@GetMapping("/users")
+	public Iterable<User> _1(){
+		Iterable<User> data = database.findAll();
+		data.forEach((item)->{item.stripPassword();}); //Hide passwords.
+		return data;
+	}
+	@GetMapping("/users/{id}")
+	public User _1(@PathVariable Long id){
+		return database.findById(id).orElse(new User()).stripPassword();
+	}
+	@PatchMapping("/users/{id}")
+	public ResponseEntity<User> _1(@PathVariable Long id,
+			@RequestBody User user){
+		Optional<User> u = database.findById(id);
+		if (u.isPresent()) {
+			User u2 = u.get();
+			u2.patchProperties(user);
+			u2.id=id; //We're not allowed to patch the Id. Set it back.
+			return ResponseEntity.ok(database.save(u2).stripPassword());
+		} else {
+			return ResponseEntity.badRequest().body(null);
+		}
+	}
+	@DeleteMapping("/users/{id}")
+	public UserCount _2(@PathVariable Long id){
+		if (database.existsById(id)) {
+			database.deleteById(id);
+		}
+		return new UserCount().set(database.count());
+	}
+	@PostMapping("/users/authenticate")
+	public AuthenticationStatus _2(@RequestBody User user){
+		List<User> u = database.findByPasswordAndEmail(user.password, user.email);
+		return new AuthenticationStatus((u.size()>0),(u.size()>0)?u.get(0):null).filter();
+	}
+			
+	@JsonInclude(JsonInclude.Include.NON_NULL)
+	@RequestMapping
+	static class AuthenticationStatus{
+		boolean authenticated;
+		User user;
+		
+		AuthenticationStatus(boolean auth,User u) {
+			this.authenticated=auth;
+			this.user=u;
+		}
+		
+		public User getUser() {
+			return user;
+		}
+		public void setUser(User user) {
+			this.user = user;
+		}
+		public AuthenticationStatus filter() {
+			if (authenticated) {
+				user.stripPassword();
+				return this;
+			} else {
+				user=null; //Strip the user object entirely. Not authenticated.
+				return this;
+			}
+		}
+
+		public boolean isAuthenticated() {
+			return authenticated;
+		}
+
+		public void setAuthenticated(boolean authenticated) {
+			this.authenticated = authenticated;
+		}
+	}
+	
+	@RequestMapping
+	static class UserCount{
+		Long count;
+
+		public Long getCount() {
+			return count;
+		}
+
+		public void setCount(Long count) {
+			this.count = count;
+		}
+		
+		public UserCount set(Long count) {
+			setCount(count);
+			return this;
+		}
+	}
+	
+	@PostMapping("/users")
+	public ResponseEntity<User> _1(@RequestBody User user){
+		User u = user;
+		if (u.email!=null && u.password!=null && u.id==null/*Cannot specify an id. This is POST'ing only.*/) {
+			database.save(u);
+			return ResponseEntity.ok(u.stripPassword());
+		} else {
+			return ResponseEntity.badRequest().body(null);
+		}
+	}
+	
+	public static void downloadFileFromUrl(String url, String file) throws IOException{
+		  File filer = new File(file);
+		  filer.createNewFile();
+		  
+		  URL website = new URL(url);
+		  HttpURLConnection connection = (HttpURLConnection) website.openConnection();
+		    /*for (String s : connection.getHeaderFields().keySet()) {
+		    	System.out.println(s+": "+connection.getHeaderFields().get(s));
+		    }*/
+		    connection.setRequestMethod("GET");
+		    //connection.setRequestProperty("Content-Type", "application/json");
+		    try {
+			  ReadableByteChannel rbc = Channels.newChannel(connection.getInputStream());
+			  FileOutputStream fos = new FileOutputStream(file);
+			  fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
+			  fos.close();
+		    } catch (ConnectException e) {
+		    	System.out.println("Failed to connect, moving on...");
+		    }
+	  }
+	
+	public double CalculateArea(double width,double height) {
+		return width*height;
+	}
+	
+	public double CalculateArea(double radius) {
+		return Math.PI*Math.pow(radius, 2);
+	}
+
+	@PostMapping("/math/area")
+	public String areaDisplay(
+			@RequestParam Map<String,String> map) {
+		if (map.containsKey("type")) {
+			if (map.get("type").equalsIgnoreCase("circle")) {
+				if (map.containsKey("radius")) {
+					return new StringBuilder("Area of a circle with a radius of ")
+						.append(map.get("radius"))
+						.append(" is "+CalculateArea(Double.parseDouble(map.get("radius"))))
+						.toString();
+				}
+			}else if(map.get("type").equalsIgnoreCase("rectangle")) {
+				if (map.containsKey("width") && map.containsKey("height")) {
+					return new StringBuilder("Area of a ")
+							.append(map.get("width")).append("x")
+							.append(map.get("height"))
+							.append(" rectangle is "+CalculateArea(Double.parseDouble(map.get("width")),Double.parseDouble(map.get("height"))))
+							.toString();
+				}
+			}
+		}
+		return "Invalid";
+	}
+	
+	@GetMapping("/math/volume/{l}/{w}/{h}")
+	public String volumeDisplay(
+			@PathVariable(value="l") String length,
+			@PathVariable(value="w") String width,
+			@PathVariable(value="h") String height) {
+		return new StringBuilder("The volume of a ")
+				.append(length).append("x")
+				.append(width).append("x")
+				.append(height)
+				.append(" rectangle is ")
+				.append(Integer.parseInt(length)*Integer.parseInt(width)*Integer.parseInt(height))
+				.toString();
+	}
+	
+	@GetMapping("/math/calculate")
+	public String piDisplay(@RequestParam(value="operation",required=false) String operation,
+			@RequestParam(value="x") String x,
+			@RequestParam(value="y") String y) {
+		int val1=Integer.parseInt(x);
+		int val2=Integer.parseInt(y);
+		switch (operation) {
+			case "subtract":{
+				return Integer.toString(val1-val2);
+			}
+			case "multiply":{
+				return Integer.toString(val1*val2);
+			}
+			case "divide":{
+				return Integer.toString(val1/val2);
+			}
+			default:{
+				return Integer.toString(val1+val2);
+			}
+		}
+	}
+	
+	@PostMapping("/math/sum")
+	public String sumDisplay(@RequestParam Map<String,String> keys) {
+		int sum = 0;
+		for (String i : keys.keySet()) {
+			sum += Integer.parseInt(keys.get(i));
+		}
+		return Integer.toString(sum);
+	}
+	
+	@GetMapping("/math/pi")
+	public String piDisplay() {
+		return Double.toString(Math.PI);
+	}
+
+    @GetMapping("/image")
+    public HashMap<String,String> helloWorld(@RequestParam("url") String url){
+		try {
+			downloadFileFromUrl("http://pbs.twimg.com/media/EdKE8xzVcCEf1qd.jpg","temp");
+			BufferedImage img = ImageIO.read(new File("temp"));
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
+		return null;
+    }
+}

src/main/java/com/example/demo/UserRepository.java

@@ -0,0 +1,10 @@
+package com.example.demo;
+
+import java.util.Date;
+import java.util.List;
+
+import org.springframework.data.repository.CrudRepository;
+
+public interface UserRepository extends CrudRepository<User,Long>{
+	List<User> findByPasswordAndEmail(String pw,String email);
+}

src/main/resources/application.properties

@@ -0,0 +1,6 @@
+spring.datasource.url=jdbc:mysql://localhost/playground?serverTimezone=UTC
+spring.datasource.username=sigonasr2
+spring.datasource.password=
+spring.datasource.driver-class-name=com.mysql.jdbc.Driver
+spring.jpa.hibernate.ddl-auto=update
+spring.jpa.database-platform=org.hibernate.dialect.MySQL8Dialect

src/test/java/com/example/demo/DemoApplicationTests.java

@@ -0,0 +1,13 @@
+package com.example.demo;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class DemoApplicationTests {
+
+	@Test
+	void contextLoads() {
+	}
+
+}