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	<title>Silveira Neto &#187; bot</title>
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		<title>Twitter Bot @rudaufc versão 1</title>
		<link>http://silveiraneto.net/2009/11/09/twitter-bot-rudaufc-versao-1/</link>
		<comments>http://silveiraneto.net/2009/11/09/twitter-bot-rudaufc-versao-1/#comments</comments>
		<pubDate>Mon, 09 Nov 2009 19:54:18 +0000</pubDate>
		<dc:creator>Silveira</dc:creator>
				<category><![CDATA[português]]></category>
		<category><![CDATA[AI]]></category>
		<category><![CDATA[API]]></category>
		<category><![CDATA[bash]]></category>
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		<category><![CDATA[culinária]]></category>
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		<category><![CDATA[Restaurante Universitário]]></category>
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		<guid isPermaLink="false">http://silveiraneto.net/?p=2927</guid>
		<description><![CDATA[Este aqui é um bot bem simples para Twitter. Diariamente, as nove da manhã ele posta qual vai ser o cardápio do RU (Restaurante Universitário) da UFC naquele dia. Assim, quando vai batendo a hora da fome, os alunos podem entrar no perfil @rudaufc e olhar qual vai ser o prato do dia, ou quem [...]]]></description>
			<content:encoded><![CDATA[<p><center><img src="http://silveiraneto.net/wp-content/uploads/2009/11/robo.jpg" alt="robô" title="robô" width="117" height="227" class="alignnone size-full wp-image-2933" /></center></p>
<p>Este aqui é um bot bem simples para Twitter.</p>
<p>Diariamente, as nove da manhã ele posta qual vai ser o cardápio do RU (<a href="http://www.ufc.br/portal/index.php?option=com_content&#038;task=view&#038;id=6842&#038;Itemid=87">Restaurante Universitário</a>) da <a href="http://www.ufc.br">UFC</a> naquele dia.</p>
<p>Assim, quando vai batendo a hora da fome, os alunos podem entrar no perfil <a href="http://www.twitter.com/rudaufc">@rudaufc</a> e olhar qual vai ser o prato do dia, ou quem está seguindo ele no Twitter pode ter a agradável surpresa de ver todo dia o que vai ser servido hoje.</p>
<p>Aqui está o código fonte do arquivo rudaufc.sh:</p>
<div class="wp_syntax">
<div class="code">
<pre class="bash bash" style="font-family:monospace;"><span style="color: #666666; font-style: italic;">#!/bin/sh</span>
<span style="color: #666666; font-style: italic;"># Twitter bot @rudaufc</span>
<span style="color: #007800;"><span style="color: #c20cb9; font-weight: bold;">login</span></span>=<span style="color: #ff0000;">&quot;rudaufc&quot;</span>
<span style="color: #007800;">senha</span>=<span style="color: #ff0000;">&quot;suasenhaaqui&quot;</span>
&nbsp;
<span style="color: #007800;">segunda</span>=<span style="color: #ff0000;">&quot;Picadinho com legumes ou bife na chapa. Salada de macarrão com cenoura. Arroz. Feijão com abóbora e batata doce.&quot;</span>
<span style="color: #007800;">terca</span>=<span style="color: #ff0000;">&quot;Franco guisado ou coxas de frango ao forno . Salada de acelga, cenoura e passas. Arroz. Feijão com abóbora e batata doce.&quot;</span>
<span style="color: #007800;">quarta</span>=<span style="color: #ff0000;">&quot;# Feijoada à moda RU ou bisteca . Salada de repolho branco, cenoura e abacaxi. Arroz. Feijão com abóbora e batata doce&quot;</span>
<span style="color: #007800;">quinta</span>=<span style="color: #ff0000;">&quot;Frango à passarinho ou frango chinês. Salada de Alface, Tomate e Cebola. Arroz. Feijão com abóbora e batata doce.&quot;</span>
<span style="color: #007800;">sexta</span>=<span style="color: #ff0000;">&quot;# Isca ao molho ou maravilha de carne. Salada de acelga com cenoura. Arroz. Feijão com abóbora e batata doce.&quot;</span>
&nbsp;
<span style="color: #007800;">dia</span>=<span style="color: #000000; font-weight: bold;">`</span><span style="color: #7a0874; font-weight: bold;">&#40;</span><span style="color: #c20cb9; font-weight: bold;">date</span> +<span style="color: #000000; font-weight: bold;">%</span><span style="color: #c20cb9; font-weight: bold;">w</span><span style="color: #7a0874; font-weight: bold;">&#41;</span><span style="color: #000000; font-weight: bold;">`</span>
<span style="color: #007800;">log</span>=<span style="color: #000000; font-weight: bold;">`</span><span style="color: #7a0874; font-weight: bold;">&#40;</span><span style="color: #c20cb9; font-weight: bold;">date</span> +<span style="color: #000000; font-weight: bold;">%</span>Y-<span style="color: #000000; font-weight: bold;">%</span>m-<span style="color: #000000; font-weight: bold;">%</span>d-<span style="color: #000000; font-weight: bold;">%</span>s<span style="color: #7a0874; font-weight: bold;">&#41;</span><span style="color: #000000; font-weight: bold;">`</span><span style="color: #ff0000;">&quot;-$$.log&quot;</span>
<span style="color: #007800;"><span style="color: #c20cb9; font-weight: bold;">dir</span></span>=<span style="color: #ff0000;">&quot;/home/silveiraneto/rudaufc&quot;</span>
<span style="color: #007800;">msg</span>=<span style="color: #ff0000;">&quot;&quot;</span>
<span style="color: #000000; font-weight: bold;">case</span> <span style="color: #ff0000;">&quot;$dia&quot;</span> <span style="color: #000000; font-weight: bold;">in</span>
<span style="color: #666666; font-style: italic;">#	&quot;0&quot;) msg=$domingo ;;</span>
	<span style="color: #ff0000;">&quot;1&quot;</span><span style="color: #7a0874; font-weight: bold;">&#41;</span> <span style="color: #007800;">msg</span>=<span style="color: #007800;">$segunda</span> ;;
	<span style="color: #ff0000;">&quot;2&quot;</span><span style="color: #7a0874; font-weight: bold;">&#41;</span> <span style="color: #007800;">msg</span>=<span style="color: #007800;">$terca</span> ;;
	<span style="color: #ff0000;">&quot;3&quot;</span><span style="color: #7a0874; font-weight: bold;">&#41;</span> <span style="color: #007800;">msg</span>=<span style="color: #007800;">$quarta</span> ;;
	<span style="color: #ff0000;">&quot;4&quot;</span><span style="color: #7a0874; font-weight: bold;">&#41;</span> <span style="color: #007800;">msg</span>=<span style="color: #007800;">$quinta</span> ;;
	<span style="color: #ff0000;">&quot;5&quot;</span><span style="color: #7a0874; font-weight: bold;">&#41;</span> <span style="color: #007800;">msg</span>=<span style="color: #007800;">$sexta</span> ;;
<span style="color: #666666; font-style: italic;">#	&quot;6&quot;) msg=$sabado ;;</span>
<span style="color: #000000; font-weight: bold;">esac</span>
&nbsp;
curl <span style="color: #660033;">-u</span> <span style="color: #007800;">$login</span>:<span style="color: #007800;">$senha</span> <span style="color: #660033;">-d</span> <span style="color: #007800;">status</span>=<span style="color: #ff0000;">&quot;$msg&quot;</span> http:<span style="color: #000000; font-weight: bold;">//</span>twitter.com<span style="color: #000000; font-weight: bold;">/</span>statuses<span style="color: #000000; font-weight: bold;">/</span>update.xml <span style="color: #000000; font-weight: bold;">&gt;</span> <span style="color: #007800;">$dir</span><span style="color: #000000; font-weight: bold;">/</span><span style="color: #007800;">$log</span></pre>
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<p>A mágica toda está na capacidade do <a href="http://en.wikipedia.org/wiki/CURL">Curl</a> de acessar facilmente a <a href="http://apiwiki.twitter.com/">API do Twitter</a> para enviar mensagens.</p>
<p>Para que o script execute diariamente as nove da manhã ele está alocado em um servidor com a <a href="http://pt.wikipedia.org/wiki/Crontab">crontab</a> configurada da seguinte maneira:</p>
<pre>
0 5 * * *  . /caminho_para_onde_ele_esta/rudaufc.sh
</pre>
<p><small>ps: leve em conta que o servidor está em um fuso horário diferente do Brasil.</small></p>
<p>Nessa versão o prato de cada dia está hardcoded no script, o que não é o ideal e faz com que semanalmente eu tenha que atualizar o script inserindo os pratos da semana manualmente. Eu espero que a próxima versão seja capaz de descobrir esses pratos e se atualizar sem nenhuma interferência.</p>
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