package com.in28minutes.springboot.configuration;

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;

@Component
@ConfigurationProperties("basic")
public class BasicConfiguration {
	private boolean value;
	private String message;
	private int number;

	public boolean isValue() {
		return value;
	}

	public void setValue(boolean value) {
		this.value = value;
	}

	public String getMessage() {
		return message;
	}

	public void setMessage(String message) {
		this.message = message;
	}

	public int getNumber() {
		return number;
	}

	public void setNumber(int number) {
		this.number = number;
	}
}

package com.in28minutes.springboot.configuration;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Profile;

@Profile("dev")
public class DevelopmentOnlyConfiguration {
	@Bean
	public String dummy() {
		return "something";
	}
}

package com.in28minutes.springboot.configuration;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Profile;

@Profile("prod")
public class ProductionOnlyConfiguration {
	@Bean
	public String dummy() {
		return "something";
	}
}

package com.in28minutes.springboot.controller;

import java.net.URI;
import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
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.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.servlet.support.ServletUriComponentsBuilder;

import com.in28minutes.springboot.model.Course;
import com.in28minutes.springboot.service.StudentService;

@RestController
public class StudentController {

	@Autowired
	private StudentService studentService;

	@GetMapping("/students/{studentId}/courses")
	public List<Course> retrieveCoursesForStudent(@PathVariable String studentId) {
		return studentService.retrieveCourses(studentId);
	}

	@PostMapping("/students/{studentId}/courses")
	public ResponseEntity<Void> registerStudentForCourse(
			@PathVariable String studentId, @RequestBody Course newCourse) {

		Course course = studentService.addCourse(studentId, newCourse);

		if (course == null)
			return ResponseEntity.noContent().build();

		URI location = ServletUriComponentsBuilder.fromCurrentRequest().path(
				"/{id}").buildAndExpand(course.getId()).toUri();

		return ResponseEntity.created(location).build();
	}

	@GetMapping("/students/{studentId}/courses/{courseId}")
	public Course retrieveDetailsForCourse(@PathVariable String studentId,
			@PathVariable String courseId) {
		return studentService.retrieveCourse(studentId, courseId);
	}

}

package com.in28minutes.springboot.jpa;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;

@Entity
public class User {

	@Id
	@GeneratedValue(strategy = GenerationType.AUTO)
	private Long id;

	private String name;
	private String role;

	protected User() {
	}

	public User(String name, String role) {
		super();
		this.name = name;
		this.role = role;
	}

	public Long getId() {
		return id;
	}

	public String getName() {
		return name;
	}

	public String getRole() {
		return role;
	}

	@Override
	public String toString() {
		return "User [id=" + id + ", name=" + name + ", role=" + role + "]";
	}

}

package com.in28minutes.springboot.jpa;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.CommandLineRunner;
import org.springframework.stereotype.Component;

@Component
public class UserCommandLineRunner implements CommandLineRunner {

	private static final Logger log = LoggerFactory
			.getLogger(UserCommandLineRunner.class);

	@Autowired
	private UserRepository repository;

	@Override
	public void run(String... args) throws Exception {

		repository.save(new User("Ranga", "Admin"));
		repository.save(new User("Ravi", "User"));
		repository.save(new User("Satish", "Admin"));
		repository.save(new User("Raghu", "User"));

		for (User user : repository.findAll()) {
			log.info(user.toString());
		}

		log.info("Admin users are.....");
		log.info("____________________");
		for (User user : repository.findByRole("Admin")) {
			log.info(user.toString());
		}

	}

}

package com.in28minutes.springboot.jpa;

import java.util.List;

import org.springframework.data.repository.CrudRepository;

public interface UserRepository extends CrudRepository<User, Long> {
	List<User> findByRole(String role);
}

package com.in28minutes.springboot.jpa;

import java.util.List;

import org.springframework.data.repository.PagingAndSortingRepository;
import org.springframework.data.repository.query.Param;
import org.springframework.data.rest.core.annotation.RepositoryRestResource;

@RepositoryRestResource(path = "users", collectionResourceRel = "users")
public interface UserRestRepository extends
		PagingAndSortingRepository<User, Long> {
	List<User> findByRole(@Param("role") String role);
}

package com.in28minutes.springboot.model;

import java.util.List;

public class Course {
	private String id;
	private String name;
	private String description;
	private List<String> steps;

	// Needed by Caused by: com.fasterxml.jackson.databind.JsonMappingException:
	// Can not construct instance of com.in28minutes.springboot.model.Course:
	// no suitable constructor found, can not deserialize from Object value
	// (missing default constructor or creator, or perhaps need to add/enable
	// type information?)
	public Course() {

	}

	public Course(String id, String name, String description, List<String> steps) {
		super();
		this.id = id;
		this.name = name;
		this.description = description;
		this.steps = steps;
	}

	public String getId() {
		return id;
	}

	public void setId(String id) {
		this.id = id;
	}

	public String getDescription() {
		return description;
	}

	public String getName() {
		return name;
	}

	public List<String> getSteps() {
		return steps;
	}

	@Override
	public String toString() {
		return String.format(
				"Course [id=%s, name=%s, description=%s, steps=%s]", id, name,
				description, steps);
	}

	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + ((id == null) ? 0 : id.hashCode());
		return result;
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		Course other = (Course) obj;
		if (id == null) {
			if (other.id != null)
				return false;
		} else if (!id.equals(other.id))
			return false;
		return true;
	}

}

package com.in28minutes.springboot.model;

import java.util.List;

public class Student {
	private String id;
	private String name;
	private String description;
	private List<Course> courses;

	public Student(String id, String name, String description,
			List<Course> courses) {
		super();
		this.id = id;
		this.name = name;
		this.description = description;
		this.courses = courses;
	}

	public String getId() {
		return id;
	}

	public void setId(String id) {
		this.id = id;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public String getDescription() {
		return description;
	}

	public void setDescription(String description) {
		this.description = description;
	}

	public List<Course> getCourses() {
		return courses;
	}

	public void setCourses(List<Course> courses) {
		this.courses = courses;
	}

	@Override
	public String toString() {
		return String.format(
				"Student [id=%s, name=%s, description=%s, courses=%s]", id,
				name, description, courses);
	}
}

package com.in28minutes.springboot.security;

import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;

//@Configuration
public class SecurityConfig extends WebSecurityConfigurerAdapter {
	// Authentication : User --> Roles
	protected void configure(AuthenticationManagerBuilder auth)
			throws Exception {
		auth.inMemoryAuthentication().passwordEncoder(org.springframework.security.crypto.password.NoOpPasswordEncoder.getInstance()).withUser("user1").password("secret1")
				.roles("USER").and().withUser("admin1").password("secret1")
				.roles("USER", "ADMIN");
	}

	// Authorization : Role -> Access
	protected void configure(HttpSecurity http) throws Exception {
		http.httpBasic().and().authorizeRequests().antMatchers("/students/**")
				.hasRole("USER").antMatchers("/users/**").hasRole("USER")
				.antMatchers("/**").hasRole("ADMIN").and().csrf().disable()
				.headers().frameOptions().disable();
	}

}

package com.in28minutes.springboot.service;

import java.math.BigInteger;
import java.security.SecureRandom;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import org.springframework.stereotype.Component;

import com.in28minutes.springboot.model.Course;
import com.in28minutes.springboot.model.Student;

@Component
public class StudentService {

	private static List<Student> students = new ArrayList<>();

	static {
		//Initialize Data
		Course course1 = new Course("Course1", "Spring", "10 Steps", Arrays
				.asList("Learn Maven", "Import Project", "First Example",
						"Second Example"));
		Course course2 = new Course("Course2", "Spring MVC", "10 Examples",
				Arrays.asList("Learn Maven", "Import Project", "First Example",
						"Second Example"));
		Course course3 = new Course("Course3", "Spring Boot", "6K Students",
				Arrays.asList("Learn Maven", "Learn Spring",
						"Learn Spring MVC", "First Example", "Second Example"));
		Course course4 = new Course("Course4", "Maven",
				"Most popular maven course on internet!", Arrays.asList(
						"Pom.xml", "Build Life Cycle", "Parent POM",
						"Importing into Eclipse"));

		Student ranga = new Student("Student1", "Ranga Karanam",
				"Hiker, Programmer and Architect", new ArrayList<>(Arrays
						.asList(course1, course2, course3, course4)));

		Student satish = new Student("Student2", "Satish T",
				"Hiker, Programmer and Architect", new ArrayList<>(Arrays
						.asList(course1, course2, course3, course4)));

		students.add(ranga);
		students.add(satish);
	}

	public List<Student> retrieveAllStudents() {
		return students;
	}

	public Student retrieveStudent(String studentId) {
		for (Student student : students) {
			if (student.getId().equals(studentId)) {
				return student;
			}
		}
		return null;
	}

	public List<Course> retrieveCourses(String studentId) {
		Student student = retrieveStudent(studentId);
		
		if(studentId.equalsIgnoreCase("Student1")){
			throw new RuntimeException("Something went wrong");
		}

		if (student == null) {
			return null;
		}

		return student.getCourses();
	}

	public Course retrieveCourse(String studentId, String courseId) {
		Student student = retrieveStudent(studentId);

		if (student == null) {
			return null;
		}

		for (Course course : student.getCourses()) {
			if (course.getId().equals(courseId)) {
				return course;
			}
		}

		return null;
	}

	private SecureRandom random = new SecureRandom();

	public Course addCourse(String studentId, Course course) {
		Student student = retrieveStudent(studentId);

		if (student == null) {
			return null;
		}

		String randomId = new BigInteger(130, random).toString(32);
		course.setId(randomId);

		student.getCourses().add(course);

		return course;
	}
}

package com.in28minutes.springboot;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ApplicationContext;

@EnableAutoConfiguration(exclude = {
        org.springframework.boot.autoconfigure.security.SecurityAutoConfiguration.class,
        org.springframework.boot.actuate.autoconfigure.ManagementWebSecurityAutoConfiguration.class})

@SpringBootApplication
public class StudentApplication {

	public static void main(String[] args) {
		ApplicationContext ctx = SpringApplication.run(
				StudentApplication.class, args);
		//System.out.println(ctx);
	}
}

package com.in28minutes.springboot;

import java.util.HashMap;
import java.util.Map;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.in28minutes.springboot.configuration.BasicConfiguration;

@RestController
public class WelcomeController {

	@Autowired
	private WelcomeService service;

	@Autowired
	private BasicConfiguration configuration;

	@RequestMapping("/welcome")
	public String welcome() {
		return service.retrieveWelcomeMessage();
	}

	@RequestMapping("/dynamic-configuration")
	public Map<String, Object> dynamicConfiguration() {
		Map<String, Object> map = new HashMap<String, Object>();
		map.put("message", configuration.getMessage());
		map.put("number", configuration.getNumber());
		map.put("value", configuration.isValue());
		return map;
	}
}

package com.in28minutes.springboot;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

@Component
public class WelcomeService {

	@Value("${welcome.message}")
	private String welcomeMessage;

	public String retrieveWelcomeMessage() {
		//Complex Method
		return welcomeMessage;
	}
}

package com.in28minutes.springboot.controller;

import static org.junit.Assert.assertTrue;

import java.nio.charset.Charset;
import java.util.Arrays;

import org.json.JSONException;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.skyscreamer.jsonassert.JSONAssert;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.boot.test.web.client.TestRestTemplate;
import org.springframework.boot.web.server.LocalServerPort;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.security.crypto.codec.Base64;
import org.springframework.test.context.junit4.SpringRunner;

import com.in28minutes.springboot.StudentApplication;
import com.in28minutes.springboot.model.Course;

@RunWith(SpringRunner.class)
@SpringBootTest(classes = StudentApplication.class,
		webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
public class StudentControllerIT {

	@LocalServerPort
	private int port;

	TestRestTemplate restTemplate = new TestRestTemplate();

	HttpHeaders headers = new HttpHeaders();

	@Before
	public void before() {
		headers.add("Authorization", createHttpAuthenticationHeaderValue(
				"user1", "secret1"));
		headers.setAccept(Arrays.asList(MediaType.APPLICATION_JSON));
	}

	@Test
	public void testRetrieveStudentCourse() throws JSONException {

		HttpEntity<String> entity = new HttpEntity<String>(null, headers);

		ResponseEntity<String> response = restTemplate.exchange(
				createURLWithPort("/students/Student1/courses/Course1"),
				HttpMethod.GET, entity, String.class);

		String expected = "{id:Course1,name:Spring,description:10Steps}";

		JSONAssert.assertEquals(expected, response.getBody(), false);
	}

	@Test
	public void addCourse() {

		Course course = new Course("Course1", "Spring", "10Steps", Arrays
				.asList("Learn Maven", "Import Project", "First Example",
						"Second Example"));

		HttpEntity<Course> entity = new HttpEntity<Course>(course, headers);

		ResponseEntity<String> response = restTemplate.exchange(
				createURLWithPort("/students/Student1/courses"),
				HttpMethod.POST, entity, String.class);

		String actual = response.getHeaders().get(HttpHeaders.LOCATION).get(0);

		assertTrue(actual.contains("/students/Student1/courses/"));

	}

	private String createURLWithPort(String uri) {
		return "http://localhost:" + port + uri;
	}

	private String createHttpAuthenticationHeaderValue(String userId,
			String password) {

		String auth = userId + ":" + password;

		byte[] encodedAuth = Base64.encode(auth.getBytes(Charset
				.forName("US-ASCII")));

		String headerValue = "Basic " + new String(encodedAuth);

		return headerValue;
	}

}

package com.in28minutes.springboot.controller;

import static org.junit.Assert.assertEquals;

import java.util.Arrays;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mockito;
import org.skyscreamer.jsonassert.JSONAssert;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest;
import org.springframework.boot.test.mock.mockito.MockBean;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.mock.web.MockHttpServletResponse;
import org.springframework.test.context.junit4.SpringRunner;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.MvcResult;
import org.springframework.test.web.servlet.RequestBuilder;
import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;

import com.in28minutes.springboot.model.Course;
import com.in28minutes.springboot.service.StudentService;

@RunWith(SpringRunner.class)
@WebMvcTest(value = StudentController.class, secure = false)
public class StudentControllerTest {

	@Autowired
	private MockMvc mockMvc;

	@MockBean
	private StudentService studentService;

	Course mockCourse = new Course("Course1", "Spring", "10 Steps", Arrays
			.asList("Learn Maven", "Import Project", "First Example",
					"Second Example"));

	String exampleCourseJson = "{\"name\":\"Spring\",\"description\":\"10 Steps\",\"steps\":[\"Learn Maven\",\"Import Project\",\"First Example\",\"Second Example\"]}";

	@Test
	public void retrieveDetailsForCourse() throws Exception {

		Mockito.when(
				studentService.retrieveCourse(Mockito.anyString(), Mockito
						.anyString())).thenReturn(mockCourse);

		RequestBuilder requestBuilder = MockMvcRequestBuilders.get(
				"/students/Student1/courses/Course1").accept(
				MediaType.APPLICATION_JSON);

		MvcResult result = mockMvc.perform(requestBuilder).andReturn();

		System.out.println(result.getResponse());
		String expected = "{id:Course1,name:Spring,description:10 Steps}";

		//{"id":"Course1","name":"Spring","description":"10 Steps, 25 Examples and 10K Students","steps":["Learn Maven","Import Project","First Example","Second Example"]}

		JSONAssert.assertEquals(expected, result.getResponse()
				.getContentAsString(), false);
	}

	@Test
	public void createStudentCourse() throws Exception {
		Course mockCourse = new Course("1", "Smallest Number", "1", Arrays
				.asList("1", "2", "3", "4"));

		//studentService.addCourse to respond back with mockCourse
		Mockito.when(
				studentService.addCourse(Mockito.anyString(), Mockito
						.any(Course.class))).thenReturn(mockCourse);

		//Send course as body to /students/Student1/courses
		RequestBuilder requestBuilder = MockMvcRequestBuilders.post(
				"/students/Student1/courses")
				.accept(MediaType.APPLICATION_JSON).content(exampleCourseJson)
				.contentType(MediaType.APPLICATION_JSON);

		MvcResult result = mockMvc.perform(requestBuilder).andReturn();

		MockHttpServletResponse response = result.getResponse();

		assertEquals(HttpStatus.CREATED.value(), response.getStatus());

		assertEquals("http://localhost/students/Student1/courses/1", response
				.getHeader(HttpHeaders.LOCATION));

	}

}