public enum LoginError {
HTTP_ERROR, INVALID_USER, JSON_PARSE_ERROR, MISC_ERROR
}
public class LoginResult {
@Nullable private final LoginError error;
private final List<Memeber> members;
private LoginResult(@Nullable LoginError error, List<Member> members) {
this.error = error;
this.members = members;
}
public static LoginResult error(LoginError error) {
return new LoginResult(error, new ArrayList<>());
}
public static LoginResult success(List<Member> members) {
return new LoginResult(null, members);
}
public boolean isError() {
return error != null;
}
}
public class Memeber {
private final String email;
private final String name;
}
public class loginTask extends AsyncTask<Void, Void, LoginResult> {
private static final String LOGIN_ENDPOINT = "http://서버ip/LoginDB.php";
interface Listener {
void loginFailureWithError(LoginError error);
void loginSucceeded(List<Memeber> members);
}
private String email, password;
private Listener lisetner;
public loginTask(@NotNull Listener lisetner) {
this.listener = listener;
}
public void setLoginInput(String email, String password) {
this.email = email;
this.password = password;
}
@Override
protected String doInBackground(String... params) {
try {
String responseString = HttpRequestUtil.post(LOGIN_ENDPOINT, getPostParameters());
if ("error".equals(responseString) || "pwerr".equals(responseString)) {
return LoginResult.error(LoginErrorType.INVALID_USER);
}
return parseJSON(responseString);
} catch (IOException e) {
return LoginResult.error(LoginErrorType.HTTP_ERROR);
} catch (JSONException e) {
return LoginResult.error(LoginErrorType.JSON_PARSE_ERROR);
} catch (Exception e) {
return LoginResult.error(LoginErrorType.MISC_ERROR);
}
}
private String getPostParameters() {
return "m_email" + email + "$m_pw=" + password;
}
private LoginResult parseJSON(String json) {
List<Member> members = new ArrayList<>();
JSONObject jsonObject = new JSONObject(callBackValue);
JSONArray jsonArray = jsonObject.getJSONArray("member");
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject item = jsonArray.getJSONObject(i);
checkid = item.getString("m_email");
checkpwd = item.getString("m_pw");
String name = item.getString("m_name");
members.add(new Member(checkid, name));
}
return LoginResult.success(members);
}
@Override
protected void onPostExecute (LoginResult loginResult) {
if (loginResult.isError()) {
listener.loginFailureWithError(loginResult.getError());
return;
}
listener.loginSucceeded(loginResult.getMembers());
}
}
public class HttpRequestUtil {
public static String post(String urlString, String postParameters) {
URL url = new URL(urlString);
return bufferedReader.close();
}
}
