ScribeHttpClient.java

package br.com.developer.redu.http;

import br.com.developer.redu.models.*;
import org.scribe.model.*;
import org.scribe.oauth.OAuthService;
import org.scribe.builder.ServiceBuilder;

import java.util.Map;
import com.google.gson.Gson;
/**
 * Created with IntelliJ IDEA.
 * User: igor
 * Date: 8/30/12
 * Time: 12:08 PM
 * To change this template use File | Settings | File Templates.
 */
public class ScribeHttpClient extends HttpClient {
    private OAuthService service;
    private Token accesToken;




    public ScribeHttpClient(String consumerKey, String consumerSecret){
        super(consumerKey, consumerSecret);
        this.initOauth();

    }
    
    public ScribeHttpClient(String consumerKey, String consumerSecret, String pin){
        super(consumerKey, consumerSecret);
        this.initOauth();
        this.accesToken = this.service.getAccessToken(null, new Verifier(pin));
    }
    
    /**
     * Versão Alternativa de construtor que instancia um token de acesso diretamente, sem a necessidade de um pin(¬¬)
     * 
     * @param consumerKey
     * @param consumerSecret
     * 
     * @param accessToken Provavelmente esse accessToken será capturado ao iniciar uma sessão no Redu 
     */
    public ScribeHttpClient(String consumerKey, String consumerSecret, Token accessToken) {
        super(consumerKey, consumerSecret);
        this.initOauth();
        this.accesToken = accessToken;
    }
    
    private void initOauth(){
        this.service = new ServiceBuilder().provider(ReduOauth2.class)
                .apiKey(this.consumerKey).apiSecret(this.consumerSecret).callback("").build();

    }

    private void addUrlParams(OAuthRequest request, Map.Entry<String, String>... params){
        for (Map.Entry<String, String> pair : params){
            request.addQuerystringParameter(pair.getKey(), pair.getValue());
        }
    }

    private void addBodyParams(OAuthRequest request, Map.Entry<String, String>... params){
        for(Map.Entry<String, String> pair : params){
            request.addBodyParameter(pair.getKey(), pair.getValue());
        }
    }

    @Override
    public void initClient(String pin) {
        Verifier v = new Verifier(pin);
        this.accesToken = this.service.getAccessToken(null, v);
    }

    @Override
    public String getAuthUrl() {
        return this.service.getAuthorizationUrl(null);
    }

    @Override
    public String get(String url, Map.Entry<String, String>... params) {
        OAuthRequest request = new OAuthRequest(Verb.GET, url);
        if(params != null){
            this.addUrlParams(request, params);
        }
        this.service.signRequest(this.accesToken, request);
        Response r = request.send();
        return r.getBody();
    }

    @Override
    public String post(String url, Map.Entry<String, String>... params) {
        OAuthRequest request = new OAuthRequest(Verb.POST, url);
        if(params != null){
            this.addBodyParams(request, params);
        }
        this.service.signRequest(this.accesToken, request);
        Response r = request.send();
        return r.getBody();  //To change body of implemented methods use File | Settings | File Templates.
    }

    @Override
    public String post(String url, byte[] payload, Map.Entry<String, String>... params) {
        OAuthRequest request = new OAuthRequest(Verb.POST, url);
        if(params != null){
            this.addBodyParams(request, params);
        }

        request.addPayload(payload);

        request.addHeader("Content-Type", "application/json");
        this.service.signRequest(this.accesToken, request);
        Response r = request.send();
        return r.getBody();
    }

    @Override
    public void delete(String url, Map.Entry<String, String>... params) {
        OAuthRequest request = new OAuthRequest(Verb.DELETE, url);
        if(params != null){
            this.addUrlParams(request, params);
        }
        this.service.signRequest(this.accesToken, request);
        Response r = request.send();
        if (!(r.getCode() == 200)){
            throw new DeleteException("Invalid return code", r.getCode());
        }
    }

    @Override
    public void put(String url,byte[] payload, Map.Entry<String, String>... params) {
        OAuthRequest request = new OAuthRequest(Verb.PUT, url);
        if(params != null){
            this.addBodyParams(request, params);
        }
        request.addPayload(payload);
        request.addHeader("Content-Type", "application/json");
        this.service.signRequest(this.accesToken, request);
        Response r = request.send();
        if(!(r.getCode() == 200)){
            throw new PutException("Invalid return code", r.getCode());
        }

    }

    public static Token parseToken(String httpToken) {
        String rawResponse = "{\"access_token\":\"" + httpToken + "\",\"token_type\":\"bearer\"}";
        return new Token(httpToken, null, rawResponse);
    }
    
}