com.sangupta.twittercli.command.Update.java Source code

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Here is the source code for com.sangupta.twittercli.command.Update.java

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/**
 *
 * twittercli - Command line power tool for Twitter
 * Copyright (c) 2014, Sandeep Gupta
 * 
 * http://sangupta.com/projects/twittercli
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *       http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 */

package com.sangupta.twittercli.command;

import io.airlift.command.Arguments;
import io.airlift.command.Command;

import java.util.List;

import com.google.gson.FieldNamingPolicy;
import com.sangupta.jerry.http.WebInvoker;
import com.sangupta.jerry.http.WebRequest;
import com.sangupta.jerry.http.WebRequestMethod;
import com.sangupta.jerry.http.WebResponse;
import com.sangupta.jerry.util.AssertUtils;
import com.sangupta.jerry.util.GsonUtils;
import com.sangupta.jerry.util.UriUtils;
import com.sangupta.twittercli.TwitterCommand;
import com.sangupta.twittercli.domain.TwitterStatusUpdate;

@Command(name = "update", description = "Update the user status")
public class Update extends TwitterCommand {

    @Arguments(description = "Message to set")
    public List<String> messages;

    @Override
    public void doCommand() {
        if (AssertUtils.isEmpty(messages)) {
            System.out.println("No message to update as status... exiting!");
            return;
        }

        StringBuilder builder = new StringBuilder(1024);
        for (int index = 0; index < messages.size(); index++) {
            if (index > 0) {
                builder.append(' ');
            }
            builder.append(messages.get(index));
        }
        String message = builder.toString();

        WebRequest request = WebInvoker.getWebRequest(
                "https://api.twitter.com/1.1/statuses/update.json?status=" + UriUtils.encodeURIComponent(message),
                WebRequestMethod.POST);
        user.signRequest(request);
        WebResponse response = WebInvoker.executeSilently(request);

        TwitterStatusUpdate update = GsonUtils.getGson(FieldNamingPolicy.LOWER_CASE_WITH_UNDERSCORES)
                .fromJson(response.getContent(), TwitterStatusUpdate.class);
        System.out.println(
                "Tweet successfully posted with ID " + update.idStr + " by @" + update.user.getScreenName());
    }

}