com.sangupta.clitools.facebook.FacebookInfo.java Source code

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Here is the source code for com.sangupta.clitools.facebook.FacebookInfo.java

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/**
 *
 * clitools - Simple command line tools
 * Copyright (c) 2014-2015, Sandeep Gupta
 * 
 * http://sangupta.com/projects/clitools
 * 
 * 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.clitools.facebook;

import javax.inject.Inject;

import com.google.gson.FieldNamingPolicy;
import com.sangupta.clitools.CliTool;
import com.sangupta.clitools.WebInvoker;
import com.sangupta.jerry.http.WebResponse;
import com.sangupta.jerry.print.ConsoleTable;
import com.sangupta.jerry.print.ConsoleTable.ConsoleTableLayout;
import com.sangupta.jerry.util.AssertUtils;
import com.sangupta.jerry.util.GsonUtils;

import io.airlift.airline.Arguments;
import io.airlift.airline.Command;
import io.airlift.airline.HelpOption;
import io.airlift.airline.SingleCommand;

@Command(name = "fbinfo", description = "Show information about a facebook account or page")
public class FacebookInfo implements Runnable, CliTool {

    @Arguments(description = "the account or page to show information for")
    public String account;

    @Inject
    private HelpOption helpOption;

    public static void main(String[] args) {
        if (AssertUtils.isEmpty(args)) {
            args = new String[] { "--help" };
        }

        FacebookInfo fbinfo = SingleCommand.singleCommand(FacebookInfo.class).parse(args);
        if (fbinfo.helpOption.showHelpIfRequested()) {
            return;
        }

        fbinfo.run();
    }

    @Override
    public void run() {
        if (AssertUtils.isEmpty(this.account)) {
            System.out.println("Account or page name is required.");
            return;
        }

        String url = "https://graph.facebook.com/" + this.account.toLowerCase();
        WebResponse response = WebInvoker.getResponse(url);
        if (response == null) {
            System.out.println("Unable to fetch response from server");
            return;
        }

        if (!response.isSuccess()) {
            System.out.println("Non-success response from server as: " + response.trace());
            System.out.println("May be user/page does not exist!");
            return;
        }

        FacebookInfoResponse info = GsonUtils.getGson(FieldNamingPolicy.LOWER_CASE_WITH_UNDERSCORES)
                .fromJson(response.getContent(), FacebookInfoResponse.class);

        // start display

        ConsoleTable table = new ConsoleTable(ConsoleTableLayout.MULTI_LINE);
        table.setColumnSeparator("  ");
        table.addRow("User Name", nonNull(info.username));
        table.addRow("ID", nonNull(info.id));
        table.addRow("Name", nonNull(info.name));
        table.addRow("Link", nonNull(info.link));
        table.addRow("Website", nonNull(info.website));
        table.addRow("Talking About", info.talkingAboutCount);
        table.addRow("Likes", info.likes);
        table.addRow("Bio", nonNull(info.bio));
        table.addRow("About", nonNull(info.about));
        table.addRow("Category", nonNull(info.category));
        table.addRow("Hometown", nonNull(info.hometown));

        table.write(System.out);
    }

    private static class FacebookInfoResponse {

        String id;
        String about;
        String bio;
        String category;
        String hometown;
        long likes;
        String link;
        String name;
        String username;
        String website;
        long talkingAboutCount;

    }

    private static String nonNull(String arg) {
        if (arg == null) {
            return "";
        }

        return arg.trim();
    }
}