Code challenge

pom.xml

@@ -1,63 +1,78 @@
 <?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 http://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>2.1.3.RELEASE</version>
-		<relativePath/> <!-- lookup parent from repository -->
-	</parent>
-	<groupId>com.zoomcare</groupId>
-	<artifactId>java-candidate-challenge</artifactId>
-	<version>0.0.1-SNAPSHOT</version>
-	<name>candidate-challenge</name>
-	<description>ZoomCare Candidate Code Challenge</description>
+         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>3.0.5</version>
+        <relativePath/> <!-- lookup parent from repository -->
+    </parent>
+    <groupId>com.example</groupId>
+    <artifactId>ZoomCareCodeChallenge</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>ZoomCareCodeChallenge</name>
+    <description>ZoomCareCodeChallenge</description>
+    <properties>
+        <java.version>17</java.version>
+    </properties>
+    <dependencies>
+        <dependency>
+            <groupId>org.hamcrest</groupId>
+            <artifactId>hamcrest</artifactId>
+            <version>2.2</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-jpa</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <optional>true</optional>
+        </dependency>
+        <dependency>
+            <groupId>com.h2database</groupId>
+            <artifactId>h2</artifactId>
+            <scope>runtime</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <optional>true</optional>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
 
-	<properties>
-		<java.version>1.8</java.version>
-	</properties>
-
-	<dependencies>
-		<dependency>
-			<groupId>org.springframework.boot</groupId>
-			<artifactId>spring-boot-starter-actuator</artifactId>
-		</dependency>
-		<dependency>
-			<groupId>org.springframework.boot</groupId>
-			<artifactId>spring-boot-starter-data-jdbc</artifactId>
-		</dependency>
-		<dependency>
-			<groupId>org.springframework.boot</groupId>
-			<artifactId>spring-boot-starter-web</artifactId>
-		</dependency>
-
-		<dependency>
-			<groupId>org.flywaydb</groupId>
-			<artifactId>flyway-core</artifactId>
-			<scope>runtime</scope>
-		</dependency>
-
-		<dependency>
-			<groupId>com.h2database</groupId>
-			<artifactId>h2</artifactId>
-			<scope>runtime</scope>
-		</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>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+                <configuration>
+                    <excludes>
+                        <exclude>
+                            <groupId>org.projectlombok</groupId>
+                            <artifactId>lombok</artifactId>
+                        </exclude>
+                    </excludes>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
 
 </project>

src/main/java/com/zoomcare/candidatechallenge/controller/EmployeeController.java

@@ -0,0 +1,34 @@
+package com.zoomcare.candidatechallenge.controller;
+
+import com.zoomcare.candidatechallenge.dto.EmployeeDTO;
+import com.zoomcare.candidatechallenge.service.EmployeeService;
+import lombok.AllArgsConstructor;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+
+@RestController
+@AllArgsConstructor
+@RequestMapping("/employees")
+public class EmployeeController {
+
+    private final EmployeeService employeeService;
+
+
+    @GetMapping("/")
+    public ResponseEntity<List<EmployeeDTO>> getTopLevelEmployees() {
+        List<EmployeeDTO> topLevelEmployees = employeeService.getTopLevelEmployees();
+        return new ResponseEntity<>(topLevelEmployees, HttpStatus.OK);
+    }
+
+    @GetMapping("/{id}")
+    public ResponseEntity<EmployeeDTO> getEmployee(@PathVariable Long id) {
+        EmployeeDTO employee = employeeService.getEmployee(id);
+        return new ResponseEntity<>(employee, HttpStatus.OK);
+    }
+}

src/main/java/com/zoomcare/candidatechallenge/dto/EmployeeDTO.java

@@ -0,0 +1,24 @@
+package com.zoomcare.candidatechallenge.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+
+import java.util.List;
+
+@Data
+@AllArgsConstructor
+public class EmployeeDTO {
+
+    private Long id;
+    private List<PropertiesDTO> properties;
+    private List<EmployeeDTO> reports;
+
+    public EmployeeDTO() {
+
+    }
+
+    public EmployeeDTO(long l) {
+    }
+
+    // Getters and setters
+}

src/main/java/com/zoomcare/candidatechallenge/dto/PropertiesDTO.java

@@ -0,0 +1,17 @@
+package com.zoomcare.candidatechallenge.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class PropertiesDTO {
+
+    private String key;
+    private String value;
+
+
+    // Getters and setters
+}

src/main/java/com/zoomcare/candidatechallenge/exceptions/EmployeeNotFoundException.java

@@ -0,0 +1,11 @@
+package com.zoomcare.candidatechallenge.exceptions;
+
+public class EmployeeNotFoundException extends RuntimeException {
+
+        public EmployeeNotFoundException(Long id) {
+            super("Could not find employee with id: " + id);
+        }
+
+    }
+
+

src/main/java/com/zoomcare/candidatechallenge/model/Employee.java

@@ -0,0 +1,40 @@
+package com.zoomcare.candidatechallenge.model;
+
+import jakarta.persistence.*;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+
+import java.util.ArrayList;
+import java.util.List;
+@Data
+@AllArgsConstructor
+@Entity
+@Table(name = "EMPLOYEE")
+public class Employee {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "SUPERVISOR_ID")
+    private Employee supervisor;
+
+    @OneToMany(mappedBy = "supervisor", fetch = FetchType.LAZY, cascade = CascadeType.ALL)
+    private List<Employee> reports = new ArrayList<>();
+
+    @OneToMany(mappedBy = "employee", fetch = FetchType.LAZY, cascade = CascadeType.ALL)
+    private List<Properties> properties = new ArrayList<>();
+
+    public Employee() {
+
+    }
+
+    public Employee(long l, Object o, Object o1) {
+    }
+
+    public Employee(long l) {
+    }
+
+    // Getters and setters
+}

src/main/java/com/zoomcare/candidatechallenge/model/Properties.java

@@ -0,0 +1,40 @@
+package com.zoomcare.candidatechallenge.model;
+
+
+import jakarta.persistence.*;
+import lombok.Data;
+
+@Data
+@Entity
+@Table(name = "PROPERTIES")
+public class Properties {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "EMPLOYEE_ID")
+    private Employee employee;
+
+
+
+    @Column(name = "SUPERVISOR_ID")
+    private Long supervisorId;
+    @Column(name = "property_key")
+    private String key;
+    @Column(name = "property_value")
+    private String value;
+
+    public Properties(String key1, String value1) {
+    }
+
+    public Properties() {
+
+    }
+
+
+    // Getters and setters
+
+}
+

src/main/java/com/zoomcare/candidatechallenge/repository/EmployeeRepository.java

@@ -0,0 +1,14 @@
+package com.zoomcare.candidatechallenge.repository;
+
+import com.zoomcare.candidatechallenge.model.Employee;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+
+@Repository
+public interface EmployeeRepository extends JpaRepository<Employee, Long> {
+
+    List<Employee> findBySupervisorIsNull();
+
+}

src/main/java/com/zoomcare/candidatechallenge/service/EmployeeService.java

@@ -0,0 +1,68 @@
+package com.zoomcare.candidatechallenge.service;
+
+import com.zoomcare.candidatechallenge.dto.EmployeeDTO;
+import com.zoomcare.candidatechallenge.dto.PropertiesDTO;
+import com.zoomcare.candidatechallenge.exceptions.EmployeeNotFoundException;
+import com.zoomcare.candidatechallenge.model.Employee;
+import com.zoomcare.candidatechallenge.model.Properties;
+import com.zoomcare.candidatechallenge.repository.EmployeeRepository;
+import org.springframework.stereotype.Service;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Optional;
+
+@Service
+public class EmployeeService {
+
+    private final EmployeeRepository employeeRepository;
+
+    public EmployeeService(EmployeeRepository employeeRepository) {
+        this.employeeRepository = employeeRepository;
+    }
+
+    public List<EmployeeDTO> getTopLevelEmployees() {
+        List<Employee> topLevelEmployees = employeeRepository.findBySupervisorIsNull();
+        return convertToDTO(topLevelEmployees);
+    }
+
+    public EmployeeDTO getEmployee(Long id) {
+        Optional<Employee> employee = employeeRepository.findById(id);
+        if (employee.isPresent()) {
+            return convertToDTO(employee.get());
+        } else {
+            throw new EmployeeNotFoundException(id);
+        }
+    }
+
+    private List<EmployeeDTO> convertToDTO(List<Employee> employees) {
+        List<EmployeeDTO> employeeDTOs = new ArrayList<>();
+        for (Employee employee : employees) {
+            employeeDTOs.add(convertToDTO(employee));
+        }
+        return employeeDTOs;
+    }
+
+    public EmployeeDTO convertToDTO(Employee employee) {
+        EmployeeDTO employeeDTO = new EmployeeDTO();
+        employeeDTO.setId(employee.getId());
+        employeeDTO.setProperties(convertPropertiesToDTO(employee.getProperties()));
+        employeeDTO.setReports((List<EmployeeDTO>) convertToDTO(employee.getReports()));
+        return employeeDTO;
+    }
+
+    public List<PropertiesDTO> convertPropertiesToDTO(List<Properties> properties) {
+        List<PropertiesDTO> propertiesDTOs = new ArrayList<>();
+        for (Properties property : properties) {
+            propertiesDTOs.add(convertToDTO(property));
+        }
+        return propertiesDTOs;
+    }
+
+    private PropertiesDTO convertToDTO(Properties property) {
+        PropertiesDTO propertiesDTO = new PropertiesDTO();
+        propertiesDTO.setKey(property.getKey());
+        propertiesDTO.setValue(property.getValue());
+        return propertiesDTO;
+    }
+}