Implement createGame and createPlayer

Author: juho05

src/main/java/org/codegame/client/Api.java

@@ -11,6 +11,7 @@
 import com.google.gson.FieldNamingPolicy;
 import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
+import com.google.gson.annotations.SerializedName;
 
 public class Api {
 	private String url;
@@ -21,22 +22,121 @@ public class Api {
 			.create();
 
 	public Api(String url) {
+		HttpURLConnection.setFollowRedirects(true);
 		this.url = trimURL(url);
 		this.tls = isTLS(this.url);
 		this.baseURL = Api.baseURL("http", this.tls, this.url);
-		HttpURLConnection.setFollowRedirects(true);
+	}
+
+	public class GameInfo {
+		@SerializedName("name")
+		public String name;
+		@SerializedName("cg_version")
+		public String cgVersion;
+		@SerializedName("display_name")
+		public String displayName;
+		@SerializedName("description")
+		public String description;
+		@SerializedName("version")
+		public String version;
+		@SerializedName("repository_url")
+		public String repositoryURL;
 	}
 
 	public GameInfo fetchInfo() throws IOException {
-		URL obj = new URL(this.baseURL + "/api/info");
+		return fetchJSON("/api/info", GameInfo.class);
+	}
+
+	public class GameData {
+		@SerializedName("game_id")
+		public String Id;
+		@SerializedName("join_secret")
+		public String joinSecret;
+	}
+
+	public GameData createGame(boolean makePublic, boolean protect) throws IOException {
+		return createGame(makePublic, protect, null);
+	}
+
+	private class CreateGameRequest {
+		@SerializedName("public")
+		public boolean makePublic;
+		@SerializedName("protected")
+		public boolean protect;
+		@SerializedName("config")
+		public Object config;
+	}
+
+	public GameData createGame(boolean makePublic, boolean protect, Object config) throws IOException {
+		var data = new CreateGameRequest();
+		data.makePublic = makePublic;
+		data.protect = protect;
+		data.config = config;
+		return postJSON("/api/games", data, GameData.class);
+	}
+
+	public class PlayerData {
+		@SerializedName("player_id")
+		public String playerId;
+		@SerializedName("player_secret")
+		public String playerSecret;
+	}
+
+	public PlayerData createPlayer(String gameId, String username) throws IOException {
+		return createPlayer(gameId, username, "");
+	}
+
+	private class CreatePlayerRequest {
+		@SerializedName("username")
+		public String username;
+		@SerializedName("join_secret")
+		public String joinSecret;
+	}
+
+	public PlayerData createPlayer(String gameId, String username, String joinSecret) throws IOException {
+		var data = new CreatePlayerRequest();
+		data.username = username;
+		data.joinSecret = joinSecret;
+		return postJSON("/api/games/" + gameId + "/players", data, PlayerData.class);
+	}
+
+	private <T> T postJSON(String endpoint, Object requestData, Class<T> responseType) throws IOException {
+		URL obj = new URL(this.baseURL + endpoint);
 		HttpURLConnection con = (HttpURLConnection) obj.openConnection();
-		con.setRequestProperty("Accept", "application/json");
+		con.setRequestMethod("POST");
+		con.setRequestProperty("Content-Type", "application/json");
+
+		var reqData = json.toJson(requestData);
+		System.out.println("Data: " + reqData);
+		con.setDoOutput(true);
+		var os = con.getOutputStream();
+		os.write(reqData.getBytes());
+		os.flush();
+		os.close();
+
+		int responseCode = con.getResponseCode();
+		if (responseCode != HttpURLConnection.HTTP_OK && responseCode != HttpURLConnection.HTTP_CREATED) {
+			throw new IOException("Failed to read response from " + endpoint + " endpoint: unexpected response code: "
+					+ responseCode);
+		}
+
 		InputStreamReader reader = new InputStreamReader(con.getInputStream());
+		T data = json.fromJson(reader, responseType);
+		return data;
+	}
+
+	private <T> T fetchJSON(String endpoint, Class<T> responseType) throws IOException {
+		var obj = new URL(this.baseURL + endpoint);
+		var con = (HttpURLConnection) obj.openConnection();
+		con.setRequestMethod("GET");
+		con.setRequestProperty("Accept", "application/json");
+		var reader = new InputStreamReader(con.getInputStream());
 		int responseCode = con.getResponseCode();
-		if (responseCode != 200)
-			throw new IOException("Failed to fetch game info: unexpected response code: " + responseCode);
-		GameInfo info = json.fromJson(reader, GameInfo.class);
-		return info;
+		if (responseCode != HttpURLConnection.HTTP_OK)
+			throw new IOException("Failed to read response from " + endpoint + " endpoint: unexpected response code: "
+					+ responseCode);
+		T data = json.fromJson(reader, responseType);
+		return data;
 	}
 
 	static String trimURL(String url) {
@@ -57,8 +157,8 @@ static String baseURL(String protocol, boolean tls, String trimmedURL) {
 
 	static boolean isTLS(String trimmedURL) {
 		try {
-			URL url = new URL(baseURL("http", true, trimmedURL) + "/api/info");
-			HttpsURLConnection connection = (HttpsURLConnection) url.openConnection();
+			var url = new URL(baseURL("http", true, trimmedURL) + "/api/info");
+			var connection = (HttpsURLConnection) url.openConnection();
 			connection.getInputStream();
 			if (connection.getSSLSession().isEmpty())
 				return false;