Initial backend

backend/src/main/java/achievements/Application.java

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+package achievements;
+
+import achievements.services.DbConnectionService;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class Application {
+
+	public static void main(String[] args) {
+		var context = SpringApplication.run(Application.class, args);
+
+		// Verify the database connection succeeded
+		var db = context.getBean(DbConnectionService.class);
+		if (db.getConnection() == null) {
+			SpringApplication.exit(context, () -> 0);
+		}
+	}
+}

backend/src/main/java/achievements/controllers/Controller.java

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+package achievements.controllers;
+
+import achievements.data.InternalError;
+import achievements.services.DbService;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import static org.springframework.web.bind.annotation.RequestMethod.GET;
+
+@RestController
+public class Controller {
+
+	@Autowired
+	private DbService db;
+
+	public Controller() {}
+
+	@RequestMapping(value = "/achievements", method = GET, produces = "application/json")
+	public ResponseEntity index() {
+		try {
+			var achievements = db.getAchievements();
+			var mapper = new ObjectMapper();
+			if (achievements == null) {
+				return new ResponseEntity(mapper.writeValueAsString(new InternalError("Could not get achievements from database")), HttpStatus.INTERNAL_SERVER_ERROR);
+			} else {
+				return new ResponseEntity(mapper.writeValueAsString(achievements), HttpStatus.OK);
+			}
+		} catch (JsonProcessingException e) {
+			e.printStackTrace();
+			return new ResponseEntity("{}", HttpStatus.INTERNAL_SERVER_ERROR);
+		}
+	}
+}

backend/src/main/java/achievements/data/Achievements.java

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+package achievements.data;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Achievements {
+
+	public static class Achievement {
+
+		@JsonProperty("GameID")
+		private int gameID;
+		@JsonProperty("Name")
+		private String name;
+		@JsonProperty("Description")
+		private String description;
+		@JsonProperty("Stages")
+		private int stages;
+
+		public Achievement(int gameID, String name, String description, int stages) {
+			this.gameID      = gameID;
+			this.name        = name;
+			this.description = description;
+			this.stages      = stages;
+		}
+
+		public int getGameID() {
+			return gameID;
+		}
+
+		public void setGameID(int gameID) {
+			this.gameID = gameID;
+		}
+
+		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 int getStages() {
+			return stages;
+		}
+
+		public void setStages(int stages) {
+			this.stages = stages;
+		}
+	}
+
+	@JsonProperty("achievements")
+	List<Achievement> achievements;
+
+	public Achievements() {
+		achievements = new ArrayList<Achievement>();
+	}
+
+	public List<Achievement> getAchievements() {
+		return achievements;
+	}
+
+	public void setAchievements(List<Achievement> achievements) {
+		this.achievements = achievements;
+	}
+}

backend/src/main/java/achievements/data/InternalError.java

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+package achievements.data;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+public class InternalError {
+
+	@JsonProperty
+	private String message;
+
+	public InternalError(String message) {
+		this.message = message;
+	}
+
+	public String getMessage() {
+		return message;
+	}
+
+	public void setMessage(String message) {
+		this.message = message;
+	}
+}

backend/src/main/java/achievements/services/DbConnectionService.java

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+package achievements.services;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Component;
+
+import javax.annotation.PostConstruct;
+import javax.annotation.PreDestroy;
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.SQLException;
+import com.microsoft.sqlserver.jdbc.SQLServerDataSource;
+
+@Component
+public class DbConnectionService {
+
+	private Connection connection;
+
+	@Value("${database.server}")
+	private String serverName;
+	@Value("${database.name}")
+	private String databaseName;
+	@Value("${database.user.name}")
+	private String username;
+	@Value("${database.user.password}")
+	private String password;
+
+	public DbConnectionService() {}
+
+	@PostConstruct
+	public void connect() {
+		try {
+			var dataSource = new SQLServerDataSource();
+			dataSource.setServerName  (serverName  );
+			dataSource.setDatabaseName(databaseName);
+			dataSource.setUser        (username    );
+			dataSource.setPassword    (password    );
+			connection = dataSource.getConnection();
+		} catch (SQLException e) {
+			e.printStackTrace();
+		}
+	}
+
+	public Connection getConnection() {
+		return this.connection;
+	}
+
+	@PreDestroy
+	public void disconnect() {
+		try {
+			if (connection != null) {
+				connection.close();
+			}
+		} catch (SQLException e) {
+			e.printStackTrace();
+		}
+	}
+}

backend/src/main/java/achievements/services/DbService.java

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+package achievements.services;
+
+import achievements.data.Achievements;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import javax.annotation.PostConstruct;
+import java.sql.Connection;
+import java.sql.SQLException;
+
+@Service
+public class DbService {
+
+	@Autowired
+	private DbConnectionService dbs;
+	private Connection db;
+
+	@PostConstruct
+	private void init() {
+		db = dbs.getConnection();
+	}
+
+	public Achievements getAchievements() {
+		final String QUERY = "SELECT * FROM [dbo].[Achievement]";
+
+		try {
+			var statement    = db.createStatement();
+			var achievements = new Achievements();
+			var queryResults = statement.executeQuery(QUERY);
+
+			while (queryResults.next()) {
+				achievements.getAchievements().add(new Achievements.Achievement(
+					queryResults.getInt("GameID"),
+					queryResults.getString("Name"),
+					queryResults.getString("Description"),
+					queryResults.getInt("Stages")
+				));
+			}
+
+			statement.close();
+			return achievements;
+		} catch (SQLException e) {
+			e.printStackTrace();
+			return null;
+		}
+	}
+}

backend/src/main/resources/application.properties

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+server.port = 8000
+spring.application.name = Achievements Project