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index.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
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<meta name="generator" content="Asciidoctor 1.5.5">
<meta name="keywords" content="react, redux, redux-form, flux">
<meta name="author" content="Leonardo Leitão">
<title>Curso React/Redux</title>
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</head>
<body class="book toc2 toc-left">
<div id="header">
<h1>Curso React/Redux</h1>
<div class="details">
<span id="author" class="author">Leonardo Leitão</span><br>
<span id="email" class="email"><a href="mailto:leonardomleitao@gmail.com">leonardomleitao@gmail.com</a></span><br>
<span id="revnumber">versão 1.0,</span>
<span id="revdate">10/05/2017</span>
<br><span id="revremark">Maio/2017</span>
</div>
<div id="toc" class="toc2">
<div id="toctitle">Índice</div>
<ul class="sectlevel1">
<li><a href="#my-money-app-autenticação">1. My Money APP: Autenticação</a>
<ul class="sectlevel2">
<li><a href="#backend-novas-dependências">1.1. Backend: Novas Dependências</a></li>
<li><a href="#backend-implementar-autenticação">1.2. Backend: Implementar Autenticação</a></li>
<li><a href="#frontend-implementar-autenticação">1.3. Frontend: Implementar Autenticação</a></li>
</ul>
</li>
<li><a href="#tabela-de-exercícios">Appendix A: Tabela de Exercícios</a></li>
<li><a href="#glossário">Glossário</a></li>
</ul>
</div>
</div>
<div id="content">
<div id="preamble">
<div class="sectionbody">
<div class="quoteblock abstract">
<blockquote>
<div class="paragraph">
<p>Sumário</p>
</div>
<div class="paragraph">
<p>Apostila do curso de React/Redux da Cod3r.</p>
</div>
<div class="paragraph">
<p><a href="https://www.cod3r.com.br" class="bare">https://www.cod3r.com.br</a></p>
</div>
</blockquote>
</div>
</div>
</div>
<div class="sect1">
<h2 id="my-money-app-autenticação"><a class="anchor" href="#my-money-app-autenticação"></a>1. My Money APP: Autenticação</h2>
<div class="sectionbody">
<div class="sect2">
<h3 id="backend-novas-dependências"><a class="anchor" href="#backend-novas-dependências"></a>1.1. Backend: Novas Dependências</h3>
<div class="admonitionblock note">
<table>
<tr>
<td class="icon">
<i class="fa icon-note" title="Nota"></i>
</td>
<td class="content">
<div class="paragraph">
<p>Iremos adicionar novas dependências ao projeto em <strong>versões específicas</strong> para garantir compatibilidade.
As mudanças importantes nas versões dos módulos adicionados serão tratadas em vídeos adicionais no final
do curso.</p>
</div>
</td>
</tr>
</table>
</div>
<div class="ulist">
<div class="title">Novas dependências são:</div>
<ul>
<li>
<p>bcrypt@1.0.2</p>
</li>
<li>
<p>jsonwebtoken@7.3.0</p>
</li>
</ul>
</div>
<div class="sect3">
<h4 id="instalação"><a class="anchor" href="#instalação"></a>1.1.1. Instalação</h4>
<div class="paragraph">
<p>Abra o terminal e dentro da pasta do projeto backend execute o seguinte comando:</p>
</div>
<div id="ex-backend-deps-install" class="sidebarblock">
<div class="content">
<div class="title">Listagem 1 - <em>Instalando as dependências</em></div>
<div class="listingblock">
<div class="content">
<pre class="pygments highlight"><code data-lang="bash">npm i --save bcrypt@1.0.2 jsonwebtoken@7.3.0</code></pre>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="sect2">
<h3 id="backend-implementar-autenticação"><a class="anchor" href="#backend-implementar-autenticação"></a>1.2. Backend: Implementar Autenticação</h3>
<div class="sect3">
<h4 id="criar-arquivo-em-env-em"><a class="anchor" href="#criar-arquivo-em-env-em"></a>1.2.1. Criar arquivo <em>.env</em></h4>
<div class="admonitionblock note">
<table>
<tr>
<td class="icon">
<i class="fa icon-note" title="Nota"></i>
</td>
<td class="content">
<div class="paragraph">
<p>O objetivo principal do <code>.env</code> é armazenar váriáveis de configuração da sua aplicação <em>backend</em>,
por enquando será armazendo apenas a chave usada para gerar o token <code>JWT</code>.</p>
</div>
</td>
</tr>
</table>
</div>
<div id="ex-backend-env" class="sidebarblock">
<div class="content">
<div class="title">Listagem 2 - <em>Criar arquivo .env</em></div>
<div class="listingblock">
<div class="title"><code>my-money-app/backend/src/.env</code></div>
<div class="content">
<pre class="pygments highlight"><code data-lang="javascript"><span class="tok-nx">module</span><span class="tok-p">.</span><span class="tok-nx">exports</span> <span class="tok-o">=</span> <span class="tok-p">{</span>
<span class="tok-c1">// Você pode alterar essa chave!</span>
<span class="tok-nx">authSecret</span><span class="tok-o">:</span> <span class="tok-s1">'skjdhf6$$%dojkhfˆ(sdkjhf'</span>
<span class="tok-p">}</span></code></pre>
</div>
</div>
</div>
</div>
<div class="admonitionblock warning">
<table>
<tr>
<td class="icon">
<i class="fa icon-warning" title="Atenção"></i>
</td>
<td class="content">
<div class="paragraph">
<p>É muito importante que o arquivo <code>.env</code> não seja commitado no repositório, pois nele está
a chave secreta para geração do token.</p>
</div>
</td>
</tr>
</table>
</div>
<div id="ex-backend-env-git" class="sidebarblock">
<div class="content">
<div class="title">Listagem 3 - <em>Adicionar .env ao .gitignore</em></div>
<div class="listingblock">
<div class="title"><code>my-money-app/backend/.gitignore</code></div>
<div class="content">
<pre class="pygments highlight"><code data-lang="bash">node_modules
*.log
.env</code></pre>
</div>
</div>
</div>
</div>
</div>
<div class="sect3">
<h4 id="criar-arquivo-em-user-js-em"><a class="anchor" href="#criar-arquivo-em-user-js-em"></a>1.2.2. Criar arquivo <em>user.js</em></h4>
<div class="admonitionblock warning">
<table>
<tr>
<td class="icon">
<i class="fa icon-warning" title="Atenção"></i>
</td>
<td class="content">
<div class="paragraph">
<p>Criar uma nova pasta ao projeto <em>backend</em> chamada <code>user</code> dentro de <code>src/api</code>.</p>
</div>
</td>
</tr>
</table>
</div>
<div class="admonitionblock note">
<table>
<tr>
<td class="icon">
<i class="fa icon-note" title="Nota"></i>
</td>
<td class="content">
<div class="paragraph">
<p>O objetivo principal do <code>user.js</code> é fazer o <strong>ODM</strong> (Mapeamento Objeto-Documento), ou seja,
mapear o objeto javascript <em>user</em> para o documento que será armazenado no MongoDB.</p>
</div>
</td>
</tr>
</table>
</div>
<div id="ex-backend-user" class="sidebarblock">
<div class="content">
<div class="title">Listagem 4 - <em>Criar arquivo user.js</em></div>
<div class="listingblock">
<div class="title"><code>my-money-app/backend/src/api/user/user.js</code></div>
<div class="content">
<pre class="pygments highlight"><code data-lang="javascript"><span class="tok-kr">const</span> <span class="tok-nx">restful</span> <span class="tok-o">=</span> <span class="tok-nx">require</span><span class="tok-p">(</span><span class="tok-s1">'node-restful'</span><span class="tok-p">)</span>
<span class="tok-kr">const</span> <span class="tok-nx">mongoose</span> <span class="tok-o">=</span> <span class="tok-nx">restful</span><span class="tok-p">.</span><span class="tok-nx">mongoose</span>
<span class="tok-kr">const</span> <span class="tok-nx">userSchema</span> <span class="tok-o">=</span> <span class="tok-k">new</span> <span class="tok-nx">mongoose</span><span class="tok-p">.</span><span class="tok-nx">Schema</span><span class="tok-p">({</span>
<span class="tok-nx">name</span><span class="tok-o">:</span> <span class="tok-p">{</span> <span class="tok-nx">type</span><span class="tok-o">:</span> <span class="tok-nb">String</span><span class="tok-p">,</span> <span class="tok-nx">required</span><span class="tok-o">:</span> <span class="tok-kc">true</span> <span class="tok-p">},</span>
<span class="tok-nx">email</span><span class="tok-o">:</span> <span class="tok-p">{</span> <span class="tok-nx">type</span><span class="tok-o">:</span> <span class="tok-nb">String</span><span class="tok-p">,</span> <span class="tok-nx">required</span><span class="tok-o">:</span> <span class="tok-kc">true</span> <span class="tok-p">},</span>
<span class="tok-nx">password</span><span class="tok-o">:</span> <span class="tok-p">{</span> <span class="tok-nx">type</span><span class="tok-o">:</span> <span class="tok-nb">String</span><span class="tok-p">,</span> <span class="tok-nx">min</span><span class="tok-o">:</span> <span class="tok-mi">6</span><span class="tok-p">,</span> <span class="tok-nx">max</span><span class="tok-o">:</span> <span class="tok-mi">12</span><span class="tok-p">,</span> <span class="tok-nx">required</span><span class="tok-o">:</span> <span class="tok-kc">true</span> <span class="tok-p">}</span>
<span class="tok-p">})</span>
<span class="tok-nx">module</span><span class="tok-p">.</span><span class="tok-nx">exports</span> <span class="tok-o">=</span> <span class="tok-nx">restful</span><span class="tok-p">.</span><span class="tok-nx">model</span><span class="tok-p">(</span><span class="tok-s1">'User'</span><span class="tok-p">,</span> <span class="tok-nx">userSchema</span><span class="tok-p">)</span></code></pre>
</div>
</div>
</div>
</div>
</div>
<div class="sect3">
<h4 id="criar-arquivo-em-authservice-js-em"><a class="anchor" href="#criar-arquivo-em-authservice-js-em"></a>1.2.3. Criar arquivo <em>authService.js</em></h4>
<div id="ex-backend-authService-1" class="sidebarblock">
<div class="content">
<div class="title">Listagem 5 - <em>Estrutura básica de authService.js</em></div>
<div class="listingblock">
<div class="title"><code>my-money-app/backend/src/api/user/authService.js</code></div>
<div class="content">
<pre class="pygments highlight"><code data-lang="javascript"><span class="tok-kr">const</span> <span class="tok-nx">_</span> <span class="tok-o">=</span> <span class="tok-nx">require</span><span class="tok-p">(</span><span class="tok-s1">'lodash'</span><span class="tok-p">)</span>
<span class="tok-kr">const</span> <span class="tok-nx">jwt</span> <span class="tok-o">=</span> <span class="tok-nx">require</span><span class="tok-p">(</span><span class="tok-s1">'jsonwebtoken'</span><span class="tok-p">)</span>
<span class="tok-kr">const</span> <span class="tok-nx">bcrypt</span> <span class="tok-o">=</span> <span class="tok-nx">require</span><span class="tok-p">(</span><span class="tok-s1">'bcrypt'</span><span class="tok-p">)</span>
<span class="tok-kr">const</span> <span class="tok-nx">User</span> <span class="tok-o">=</span> <span class="tok-nx">require</span><span class="tok-p">(</span><span class="tok-s1">'./user'</span><span class="tok-p">)</span>
<span class="tok-kr">const</span> <span class="tok-nx">env</span> <span class="tok-o">=</span> <span class="tok-nx">require</span><span class="tok-p">(</span><span class="tok-s1">'../../.env'</span><span class="tok-p">)</span>
<span class="tok-kr">const</span> <span class="tok-nx">emailRegex</span> <span class="tok-o">=</span> <span class="tok-sr">/\S+@\S+\.\S+/</span>
<span class="tok-kr">const</span> <span class="tok-nx">passwordRegex</span> <span class="tok-o">=</span> <span class="tok-sr">/((?=.*\d)(?=.*[a-z])(?=.*[A-Z])(?=.*[@#$%]).{6,20})/</span>
<span class="tok-kr">const</span> <span class="tok-nx">sendErrorsFromDB</span> <span class="tok-o">=</span> <span class="tok-p">(</span><span class="tok-nx">res</span><span class="tok-p">,</span> <span class="tok-nx">dbErrors</span><span class="tok-p">)</span> <span class="tok-o">=></span> <span class="tok-p">{</span>
<span class="tok-kr">const</span> <span class="tok-nx">errors</span> <span class="tok-o">=</span> <span class="tok-p">[]</span>
<span class="tok-nx">_</span><span class="tok-p">.</span><span class="tok-nx">forIn</span><span class="tok-p">(</span><span class="tok-nx">dbErrors</span><span class="tok-p">.</span><span class="tok-nx">errors</span><span class="tok-p">,</span> <span class="tok-nx">error</span> <span class="tok-o">=></span> <span class="tok-nx">errors</span><span class="tok-p">.</span><span class="tok-nx">push</span><span class="tok-p">(</span><span class="tok-nx">error</span><span class="tok-p">.</span><span class="tok-nx">message</span><span class="tok-p">))</span>
<span class="tok-k">return</span> <span class="tok-nx">res</span><span class="tok-p">.</span><span class="tok-nx">status</span><span class="tok-p">(</span><span class="tok-mi">400</span><span class="tok-p">).</span><span class="tok-nx">json</span><span class="tok-p">({</span><span class="tok-nx">errors</span><span class="tok-p">})</span>
<span class="tok-p">}</span></code></pre>
</div>
</div>
</div>
</div>
<div id="ex-backend-authService-2" class="sidebarblock">
<div class="content">
<div class="title">Listagem 6 - <em>Criar método login de authService.js</em></div>
<div class="listingblock">
<div class="title"><code>my-money-app/backend/src/api/user/authService.js</code></div>
<div class="content">
<pre class="pygments highlight"><code data-lang="javascript"><span class="tok-kr">const</span> <span class="tok-nx">login</span> <span class="tok-o">=</span> <span class="tok-p">(</span><span class="tok-nx">req</span><span class="tok-p">,</span> <span class="tok-nx">res</span><span class="tok-p">,</span> <span class="tok-nx">next</span><span class="tok-p">)</span> <span class="tok-o">=></span> <span class="tok-p">{</span>
<span class="tok-kr">const</span> <span class="tok-nx">email</span> <span class="tok-o">=</span> <span class="tok-nx">req</span><span class="tok-p">.</span><span class="tok-nx">body</span><span class="tok-p">.</span><span class="tok-nx">email</span> <span class="tok-o">||</span> <span class="tok-s1">''</span>
<span class="tok-kr">const</span> <span class="tok-nx">password</span> <span class="tok-o">=</span> <span class="tok-nx">req</span><span class="tok-p">.</span><span class="tok-nx">body</span><span class="tok-p">.</span><span class="tok-nx">password</span> <span class="tok-o">||</span> <span class="tok-s1">''</span>
<span class="tok-nx">User</span><span class="tok-p">.</span><span class="tok-nx">findOne</span><span class="tok-p">({</span><span class="tok-nx">email</span><span class="tok-p">},</span> <span class="tok-p">(</span><span class="tok-nx">err</span><span class="tok-p">,</span> <span class="tok-nx">user</span><span class="tok-p">)</span> <span class="tok-o">=></span> <span class="tok-p">{</span>
<span class="tok-k">if</span><span class="tok-p">(</span><span class="tok-nx">err</span><span class="tok-p">)</span> <span class="tok-p">{</span>
<span class="tok-k">return</span> <span class="tok-nx">sendErrorsFromDB</span><span class="tok-p">(</span><span class="tok-nx">res</span><span class="tok-p">,</span> <span class="tok-nx">err</span><span class="tok-p">)</span>
<span class="tok-p">}</span> <span class="tok-k">else</span> <span class="tok-k">if</span> <span class="tok-p">(</span><span class="tok-nx">user</span> <span class="tok-o">&&</span> <span class="tok-nx">bcrypt</span><span class="tok-p">.</span><span class="tok-nx">compareSync</span><span class="tok-p">(</span><span class="tok-nx">password</span><span class="tok-p">,</span> <span class="tok-nx">user</span><span class="tok-p">.</span><span class="tok-nx">password</span><span class="tok-p">))</span> <span class="tok-p">{</span>
<span class="tok-kr">const</span> <span class="tok-nx">token</span> <span class="tok-o">=</span> <span class="tok-nx">jwt</span><span class="tok-p">.</span><span class="tok-nx">sign</span><span class="tok-p">(</span><span class="tok-nx">user</span><span class="tok-p">,</span> <span class="tok-nx">env</span><span class="tok-p">.</span><span class="tok-nx">authSecret</span><span class="tok-p">,</span> <span class="tok-p">{</span>
<span class="tok-nx">expiresIn</span><span class="tok-o">:</span> <span class="tok-s2">"1 day"</span>
<span class="tok-p">})</span>
<span class="tok-kr">const</span> <span class="tok-p">{</span> <span class="tok-nx">name</span><span class="tok-p">,</span> <span class="tok-nx">email</span> <span class="tok-p">}</span> <span class="tok-o">=</span> <span class="tok-nx">user</span>
<span class="tok-nx">res</span><span class="tok-p">.</span><span class="tok-nx">json</span><span class="tok-p">({</span> <span class="tok-nx">name</span><span class="tok-p">,</span> <span class="tok-nx">email</span><span class="tok-p">,</span> <span class="tok-nx">token</span> <span class="tok-p">})</span>
<span class="tok-p">}</span> <span class="tok-k">else</span> <span class="tok-p">{</span>
<span class="tok-k">return</span> <span class="tok-nx">res</span><span class="tok-p">.</span><span class="tok-nx">status</span><span class="tok-p">(</span><span class="tok-mi">400</span><span class="tok-p">).</span><span class="tok-nx">send</span><span class="tok-p">({</span><span class="tok-nx">errors</span><span class="tok-o">:</span> <span class="tok-p">[</span><span class="tok-s1">'Usuário/Senha inválidos'</span><span class="tok-p">]})</span>
<span class="tok-p">}</span>
<span class="tok-p">})</span>
<span class="tok-p">}</span></code></pre>
</div>
</div>
</div>
</div>
<div id="ex-backend-authService-3" class="sidebarblock">
<div class="content">
<div class="title">Listagem 7 - <em>Criar método validateToken de authService.js</em></div>
<div class="listingblock">
<div class="title"><code>my-money-app/backend/src/api/user/authService.js</code></div>
<div class="content">
<pre class="pygments highlight"><code data-lang="javascript"><span class="tok-kr">const</span> <span class="tok-nx">validateToken</span> <span class="tok-o">=</span> <span class="tok-p">(</span><span class="tok-nx">req</span><span class="tok-p">,</span> <span class="tok-nx">res</span><span class="tok-p">,</span> <span class="tok-nx">next</span><span class="tok-p">)</span> <span class="tok-o">=></span> <span class="tok-p">{</span>
<span class="tok-kr">const</span> <span class="tok-nx">token</span> <span class="tok-o">=</span> <span class="tok-nx">req</span><span class="tok-p">.</span><span class="tok-nx">body</span><span class="tok-p">.</span><span class="tok-nx">token</span> <span class="tok-o">||</span> <span class="tok-s1">''</span>
<span class="tok-nx">jwt</span><span class="tok-p">.</span><span class="tok-nx">verify</span><span class="tok-p">(</span><span class="tok-nx">token</span><span class="tok-p">,</span> <span class="tok-nx">env</span><span class="tok-p">.</span><span class="tok-nx">authSecret</span><span class="tok-p">,</span> <span class="tok-kd">function</span><span class="tok-p">(</span><span class="tok-nx">err</span><span class="tok-p">,</span> <span class="tok-nx">decoded</span><span class="tok-p">)</span> <span class="tok-p">{</span>
<span class="tok-k">return</span> <span class="tok-nx">res</span><span class="tok-p">.</span><span class="tok-nx">status</span><span class="tok-p">(</span><span class="tok-mi">200</span><span class="tok-p">).</span><span class="tok-nx">send</span><span class="tok-p">({</span><span class="tok-nx">valid</span><span class="tok-o">:</span> <span class="tok-o">!</span><span class="tok-nx">err</span><span class="tok-p">})</span>
<span class="tok-p">})</span>
<span class="tok-p">}</span></code></pre>
</div>
</div>
</div>
</div>
<div id="ex-backend-authService-4" class="sidebarblock">
<div class="content">
<div class="title">Listagem 8 - <em>Criar método signup de authService.js</em></div>
<div class="listingblock">
<div class="title"><code>my-money-app/backend/src/api/user/authService.js</code></div>
<div class="content">
<pre class="pygments highlight"><code data-lang="javascript"><span class="tok-kr">const</span> <span class="tok-nx">signup</span> <span class="tok-o">=</span> <span class="tok-p">(</span><span class="tok-nx">req</span><span class="tok-p">,</span> <span class="tok-nx">res</span><span class="tok-p">,</span> <span class="tok-nx">next</span><span class="tok-p">)</span> <span class="tok-o">=></span> <span class="tok-p">{</span>
<span class="tok-kr">const</span> <span class="tok-nx">name</span> <span class="tok-o">=</span> <span class="tok-nx">req</span><span class="tok-p">.</span><span class="tok-nx">body</span><span class="tok-p">.</span><span class="tok-nx">name</span> <span class="tok-o">||</span> <span class="tok-s1">''</span>
<span class="tok-kr">const</span> <span class="tok-nx">email</span> <span class="tok-o">=</span> <span class="tok-nx">req</span><span class="tok-p">.</span><span class="tok-nx">body</span><span class="tok-p">.</span><span class="tok-nx">email</span> <span class="tok-o">||</span> <span class="tok-s1">''</span>
<span class="tok-kr">const</span> <span class="tok-nx">password</span> <span class="tok-o">=</span> <span class="tok-nx">req</span><span class="tok-p">.</span><span class="tok-nx">body</span><span class="tok-p">.</span><span class="tok-nx">password</span> <span class="tok-o">||</span> <span class="tok-s1">''</span>
<span class="tok-kr">const</span> <span class="tok-nx">confirmPassword</span> <span class="tok-o">=</span> <span class="tok-nx">req</span><span class="tok-p">.</span><span class="tok-nx">body</span><span class="tok-p">.</span><span class="tok-nx">confirm_password</span> <span class="tok-o">||</span> <span class="tok-s1">''</span>
<span class="tok-k">if</span><span class="tok-p">(</span><span class="tok-o">!</span><span class="tok-nx">email</span><span class="tok-p">.</span><span class="tok-nx">match</span><span class="tok-p">(</span><span class="tok-nx">emailRegex</span><span class="tok-p">))</span> <span class="tok-p">{</span>
<span class="tok-k">return</span> <span class="tok-nx">res</span><span class="tok-p">.</span><span class="tok-nx">status</span><span class="tok-p">(</span><span class="tok-mi">400</span><span class="tok-p">).</span><span class="tok-nx">send</span><span class="tok-p">({</span><span class="tok-nx">errors</span><span class="tok-o">:</span> <span class="tok-p">[</span><span class="tok-s1">'O e-mail informa está inválido'</span><span class="tok-p">]})</span>
<span class="tok-p">}</span>
<span class="tok-k">if</span><span class="tok-p">(</span><span class="tok-o">!</span><span class="tok-nx">password</span><span class="tok-p">.</span><span class="tok-nx">match</span><span class="tok-p">(</span><span class="tok-nx">passwordRegex</span><span class="tok-p">))</span> <span class="tok-p">{</span>
<span class="tok-k">return</span> <span class="tok-nx">res</span><span class="tok-p">.</span><span class="tok-nx">status</span><span class="tok-p">(</span><span class="tok-mi">400</span><span class="tok-p">).</span><span class="tok-nx">send</span><span class="tok-p">({</span><span class="tok-nx">errors</span><span class="tok-o">:</span> <span class="tok-p">[</span>
<span class="tok-s2">"Senha precisar ter: uma letra maiúscula, uma letra minúscula, um número, uma caractere especial(@#$%) e tamanho entre 6-20."</span>
<span class="tok-p">]})</span>
<span class="tok-p">}</span>
<span class="tok-kr">const</span> <span class="tok-nx">salt</span> <span class="tok-o">=</span> <span class="tok-nx">bcrypt</span><span class="tok-p">.</span><span class="tok-nx">genSaltSync</span><span class="tok-p">()</span>
<span class="tok-kr">const</span> <span class="tok-nx">passwordHash</span> <span class="tok-o">=</span> <span class="tok-nx">bcrypt</span><span class="tok-p">.</span><span class="tok-nx">hashSync</span><span class="tok-p">(</span><span class="tok-nx">password</span><span class="tok-p">,</span> <span class="tok-nx">salt</span><span class="tok-p">)</span>
<span class="tok-k">if</span><span class="tok-p">(</span><span class="tok-o">!</span><span class="tok-nx">bcrypt</span><span class="tok-p">.</span><span class="tok-nx">compareSync</span><span class="tok-p">(</span><span class="tok-nx">confirmPassword</span><span class="tok-p">,</span> <span class="tok-nx">passwordHash</span><span class="tok-p">))</span> <span class="tok-p">{</span>
<span class="tok-k">return</span> <span class="tok-nx">res</span><span class="tok-p">.</span><span class="tok-nx">status</span><span class="tok-p">(</span><span class="tok-mi">400</span><span class="tok-p">).</span><span class="tok-nx">send</span><span class="tok-p">({</span><span class="tok-nx">errors</span><span class="tok-o">:</span> <span class="tok-p">[</span><span class="tok-s1">'Senhas não conferem.'</span><span class="tok-p">]})</span>
<span class="tok-p">}</span>
<span class="tok-nx">User</span><span class="tok-p">.</span><span class="tok-nx">findOne</span><span class="tok-p">({</span><span class="tok-nx">email</span><span class="tok-p">},</span> <span class="tok-p">(</span><span class="tok-nx">err</span><span class="tok-p">,</span> <span class="tok-nx">user</span><span class="tok-p">)</span> <span class="tok-o">=></span> <span class="tok-p">{</span>
<span class="tok-k">if</span><span class="tok-p">(</span><span class="tok-nx">err</span><span class="tok-p">)</span> <span class="tok-p">{</span>
<span class="tok-k">return</span> <span class="tok-nx">sendErrorsFromDB</span><span class="tok-p">(</span><span class="tok-nx">res</span><span class="tok-p">,</span> <span class="tok-nx">err</span><span class="tok-p">)</span>
<span class="tok-p">}</span> <span class="tok-k">else</span> <span class="tok-k">if</span> <span class="tok-p">(</span><span class="tok-nx">user</span><span class="tok-p">)</span> <span class="tok-p">{</span>
<span class="tok-k">return</span> <span class="tok-nx">res</span><span class="tok-p">.</span><span class="tok-nx">status</span><span class="tok-p">(</span><span class="tok-mi">400</span><span class="tok-p">).</span><span class="tok-nx">send</span><span class="tok-p">({</span><span class="tok-nx">errors</span><span class="tok-o">:</span> <span class="tok-p">[</span><span class="tok-s1">'Usuário já cadastrado.'</span><span class="tok-p">]})</span>
<span class="tok-p">}</span> <span class="tok-k">else</span> <span class="tok-p">{</span>
<span class="tok-kr">const</span> <span class="tok-nx">newUser</span> <span class="tok-o">=</span> <span class="tok-k">new</span> <span class="tok-nx">User</span><span class="tok-p">({</span> <span class="tok-nx">name</span><span class="tok-p">,</span> <span class="tok-nx">email</span><span class="tok-p">,</span> <span class="tok-nx">password</span><span class="tok-o">:</span> <span class="tok-nx">passwordHash</span> <span class="tok-p">})</span>
<span class="tok-nx">newUser</span><span class="tok-p">.</span><span class="tok-nx">save</span><span class="tok-p">(</span><span class="tok-nx">err</span> <span class="tok-o">=></span> <span class="tok-p">{</span>
<span class="tok-k">if</span><span class="tok-p">(</span><span class="tok-nx">err</span><span class="tok-p">)</span> <span class="tok-p">{</span>
<span class="tok-k">return</span> <span class="tok-nx">sendErrorsFromDB</span><span class="tok-p">(</span><span class="tok-nx">res</span><span class="tok-p">,</span> <span class="tok-nx">err</span><span class="tok-p">)</span>
<span class="tok-p">}</span> <span class="tok-k">else</span> <span class="tok-p">{</span>
<span class="tok-nx">login</span><span class="tok-p">(</span><span class="tok-nx">req</span><span class="tok-p">,</span> <span class="tok-nx">res</span><span class="tok-p">,</span> <span class="tok-nx">next</span><span class="tok-p">)</span>
<span class="tok-p">}</span>
<span class="tok-p">})</span>
<span class="tok-p">}</span>
<span class="tok-p">})</span>
<span class="tok-p">}</span></code></pre>
</div>
</div>
</div>
</div>
<div id="ex-backend-authService-5" class="sidebarblock">
<div class="content">
<div class="title">Listagem 9 - <em>Exportar os métodos de authService.js</em></div>
<div class="listingblock">
<div class="title"><code>my-money-app/backend/src/api/user/authService.js</code></div>
<div class="content">
<pre class="pygments highlight"><code data-lang="javascript"> <span class="tok-nx">module</span><span class="tok-p">.</span><span class="tok-nx">exports</span> <span class="tok-o">=</span> <span class="tok-p">{</span> <span class="tok-nx">login</span><span class="tok-p">,</span> <span class="tok-nx">signup</span><span class="tok-p">,</span> <span class="tok-nx">validateToken</span> <span class="tok-p">}</span></code></pre>
</div>
</div>
</div>
</div>
</div>
<div class="sect3">
<h4 id="criar-middleware-em-auth-js-em"><a class="anchor" href="#criar-middleware-em-auth-js-em"></a>1.2.4. Criar middleware <em>auth.js</em></h4>
<div class="admonitionblock note">
<table>
<tr>
<td class="icon">
<i class="fa icon-note" title="Nota"></i>
</td>
<td class="content">
<div class="paragraph">
<p>Esse <em><a href="#middleware">middleware</a></em> será o responsável por validar o token <em><a href="#jwt">JWT</a></em> para as routas protegidas e
garantir que a API esteja protegida.</p>
</div>
</td>
</tr>
</table>
</div>
<div id="ex-backend-auth" class="sidebarblock">
<div class="content">
<div class="title">Listagem 10 - <em>Criar middleware auth.js</em></div>
<div class="listingblock">
<div class="title"><code>my-money-app/backend/src/config/auth.js</code></div>
<div class="content">
<pre class="pygments highlight"><code data-lang="javascript"><span class="tok-kr">const</span> <span class="tok-nx">jwt</span> <span class="tok-o">=</span> <span class="tok-nx">require</span><span class="tok-p">(</span><span class="tok-s1">'jsonwebtoken'</span><span class="tok-p">)</span>
<span class="tok-kr">const</span> <span class="tok-nx">env</span> <span class="tok-o">=</span> <span class="tok-nx">require</span><span class="tok-p">(</span><span class="tok-s1">'../.env'</span><span class="tok-p">)</span>
<span class="tok-nx">module</span><span class="tok-p">.</span><span class="tok-nx">exports</span> <span class="tok-o">=</span> <span class="tok-p">(</span><span class="tok-nx">req</span><span class="tok-p">,</span> <span class="tok-nx">res</span><span class="tok-p">,</span> <span class="tok-nx">next</span><span class="tok-p">)</span> <span class="tok-o">=></span> <span class="tok-p">{</span>
<span class="tok-c1">// CORS preflight request</span>
<span class="tok-k">if</span><span class="tok-p">(</span><span class="tok-nx">req</span><span class="tok-p">.</span><span class="tok-nx">method</span> <span class="tok-o">===</span> <span class="tok-s1">'OPTIONS'</span><span class="tok-p">)</span> <span class="tok-p">{</span>
<span class="tok-nx">next</span><span class="tok-p">()</span>
<span class="tok-p">}</span> <span class="tok-k">else</span> <span class="tok-p">{</span>
<span class="tok-kr">const</span> <span class="tok-nx">token</span> <span class="tok-o">=</span> <span class="tok-nx">req</span><span class="tok-p">.</span><span class="tok-nx">body</span><span class="tok-p">.</span><span class="tok-nx">token</span> <span class="tok-o">||</span> <span class="tok-nx">req</span><span class="tok-p">.</span><span class="tok-nx">query</span><span class="tok-p">.</span><span class="tok-nx">token</span> <span class="tok-o">||</span> <span class="tok-nx">req</span><span class="tok-p">.</span><span class="tok-nx">headers</span><span class="tok-p">[</span><span class="tok-s1">'authorization'</span><span class="tok-p">]</span>
<span class="tok-k">if</span><span class="tok-p">(</span><span class="tok-o">!</span><span class="tok-nx">token</span><span class="tok-p">)</span> <span class="tok-p">{</span>
<span class="tok-k">return</span> <span class="tok-nx">res</span><span class="tok-p">.</span><span class="tok-nx">status</span><span class="tok-p">(</span><span class="tok-mi">403</span><span class="tok-p">).</span><span class="tok-nx">send</span><span class="tok-p">({</span><span class="tok-nx">errors</span><span class="tok-o">:</span> <span class="tok-p">[</span><span class="tok-s1">'No token provided.'</span><span class="tok-p">]})</span>
<span class="tok-p">}</span>
<span class="tok-nx">jwt</span><span class="tok-p">.</span><span class="tok-nx">verify</span><span class="tok-p">(</span><span class="tok-nx">token</span><span class="tok-p">,</span> <span class="tok-nx">env</span><span class="tok-p">.</span><span class="tok-nx">authSecret</span><span class="tok-p">,</span> <span class="tok-kd">function</span><span class="tok-p">(</span><span class="tok-nx">err</span><span class="tok-p">,</span> <span class="tok-nx">decoded</span><span class="tok-p">)</span> <span class="tok-p">{</span>
<span class="tok-k">if</span><span class="tok-p">(</span><span class="tok-nx">err</span><span class="tok-p">)</span> <span class="tok-p">{</span>
<span class="tok-k">return</span> <span class="tok-nx">res</span><span class="tok-p">.</span><span class="tok-nx">status</span><span class="tok-p">(</span><span class="tok-mi">403</span><span class="tok-p">).</span><span class="tok-nx">send</span><span class="tok-p">({</span><span class="tok-nx">errors</span><span class="tok-o">:</span> <span class="tok-p">[</span><span class="tok-s1">'Failed to authenticate token.'</span><span class="tok-p">]})</span>
<span class="tok-p">}</span> <span class="tok-k">else</span> <span class="tok-p">{</span>
<span class="tok-nx">req</span><span class="tok-p">.</span><span class="tok-nx">decoded</span> <span class="tok-o">=</span> <span class="tok-nx">decoded</span>
<span class="tok-nx">next</span><span class="tok-p">()</span>
<span class="tok-p">}</span>
<span class="tok-p">})</span>
<span class="tok-p">}</span>
<span class="tok-p">}</span></code></pre>
</div>
</div>
</div>
</div>
<div id="ex-backend-auth-cors" class="sidebarblock">
<div class="content">
<div class="title">Listagem 11 - <em>Adicionar header em cors.js</em></div>
<div class="listingblock">
<div class="title"><code>my-money-app/backend/src/config/cors.js</code></div>
<div class="content">
<pre class="pygments highlight"><code data-lang="javascript"><span class="tok-nx">module</span><span class="tok-p">.</span><span class="tok-nx">exports</span> <span class="tok-o">=</span> <span class="tok-p">(</span><span class="tok-nx">req</span><span class="tok-p">,</span> <span class="tok-nx">res</span><span class="tok-p">,</span> <span class="tok-nx">next</span><span class="tok-p">)</span> <span class="tok-o">=></span> <span class="tok-p">{</span>
<span class="tok-nx">res</span><span class="tok-p">.</span><span class="tok-nx">header</span><span class="tok-p">(</span><span class="tok-s1">'Access-Control-Allow-Origin'</span><span class="tok-p">,</span> <span class="tok-s1">'*'</span><span class="tok-p">)</span>
<span class="tok-nx">res</span><span class="tok-p">.</span><span class="tok-nx">header</span><span class="tok-p">(</span><span class="tok-s1">'Access-Control-Allow-Methods'</span><span class="tok-p">,</span>
<span class="tok-s1">'GET, POST, OPTIONS, PUT, PATCH, DELETE'</span><span class="tok-p">)</span>
<span class="tok-nx">res</span><span class="tok-p">.</span><span class="tok-nx">header</span><span class="tok-p">(</span><span class="tok-s1">'Access-Control-Allow-Headers'</span><span class="tok-p">,</span>
<span class="tok-s1">'Origin, X-Requested-With, Content-Type, Accept, Authorization'</span><span class="tok-p">)</span>
<span class="tok-nx">next</span><span class="tok-p">()</span>
<span class="tok-p">}</span></code></pre>
</div>
</div>
</div>
</div>
</div>
<div class="sect3">
<h4 id="alterar-arquivo-em-routes-js-em"><a class="anchor" href="#alterar-arquivo-em-routes-js-em"></a>1.2.5. Alterar arquivo <em>routes.js</em></h4>
<div class="admonitionblock note">
<table>
<tr>
<td class="icon">
<i class="fa icon-note" title="Nota"></i>
</td>
<td class="content">
<div class="paragraph">
<p>Além de cadastrar as novas rotas <em>login</em>, <em>signup</em> e <em>validateToken</em>, essa alteração tem por
objetivo separar as routas públicas das rotas privadas (acesso com autenticação).</p>
</div>
</td>
</tr>
</table>
</div>
<div id="ex-backend-routes" class="sidebarblock">
<div class="content">
<div class="title">Listagem 12 - <em>Alterar arquivo routes.js</em></div>
<div class="listingblock">
<div class="title"><code>my-money-app/backend/src/config/routes.js</code></div>
<div class="content">
<pre class="pygments highlight"><code data-lang="javascript"><span class="tok-kr">const</span> <span class="tok-nx">express</span> <span class="tok-o">=</span> <span class="tok-nx">require</span><span class="tok-p">(</span><span class="tok-s1">'express'</span><span class="tok-p">)</span>
<span class="tok-kr">const</span> <span class="tok-nx">auth</span> <span class="tok-o">=</span> <span class="tok-nx">require</span><span class="tok-p">(</span><span class="tok-s1">'./auth'</span><span class="tok-p">)</span>
<span class="tok-nx">module</span><span class="tok-p">.</span><span class="tok-nx">exports</span> <span class="tok-o">=</span> <span class="tok-kd">function</span><span class="tok-p">(</span><span class="tok-nx">server</span><span class="tok-p">)</span> <span class="tok-p">{</span>
<span class="tok-cm">/*</span>
<span class="tok-cm"> * Rotas protegidas por Token JWT</span>
<span class="tok-cm"> */</span>
<span class="tok-kr">const</span> <span class="tok-nx">protectedApi</span> <span class="tok-o">=</span> <span class="tok-nx">express</span><span class="tok-p">.</span><span class="tok-nx">Router</span><span class="tok-p">()</span>
<span class="tok-nx">server</span><span class="tok-p">.</span><span class="tok-nx">use</span><span class="tok-p">(</span><span class="tok-s1">'/api'</span><span class="tok-p">,</span> <span class="tok-nx">protectedApi</span><span class="tok-p">)</span>
<span class="tok-nx">protectedApi</span><span class="tok-p">.</span><span class="tok-nx">use</span><span class="tok-p">(</span><span class="tok-nx">auth</span><span class="tok-p">)</span>
<span class="tok-kr">const</span> <span class="tok-nx">BillingCycle</span> <span class="tok-o">=</span> <span class="tok-nx">require</span><span class="tok-p">(</span><span class="tok-s1">'../api/billingCycle/billingCycleService'</span><span class="tok-p">)</span>
<span class="tok-nx">BillingCycle</span><span class="tok-p">.</span><span class="tok-nx">register</span><span class="tok-p">(</span><span class="tok-nx">protectedApi</span><span class="tok-p">,</span> <span class="tok-s1">'/billingCycles'</span><span class="tok-p">)</span>
<span class="tok-cm">/*</span>
<span class="tok-cm"> * Rotas abertas</span>
<span class="tok-cm"> */</span>
<span class="tok-kr">const</span> <span class="tok-nx">openApi</span> <span class="tok-o">=</span> <span class="tok-nx">express</span><span class="tok-p">.</span><span class="tok-nx">Router</span><span class="tok-p">()</span>
<span class="tok-nx">server</span><span class="tok-p">.</span><span class="tok-nx">use</span><span class="tok-p">(</span><span class="tok-s1">'/oapi'</span><span class="tok-p">,</span> <span class="tok-nx">openApi</span><span class="tok-p">)</span>
<span class="tok-kr">const</span> <span class="tok-nx">AuthService</span> <span class="tok-o">=</span> <span class="tok-nx">require</span><span class="tok-p">(</span><span class="tok-s1">'../api/user/AuthService'</span><span class="tok-p">)</span>
<span class="tok-nx">openApi</span><span class="tok-p">.</span><span class="tok-nx">post</span><span class="tok-p">(</span><span class="tok-s1">'/login'</span><span class="tok-p">,</span> <span class="tok-nx">AuthService</span><span class="tok-p">.</span><span class="tok-nx">login</span><span class="tok-p">)</span>
<span class="tok-nx">openApi</span><span class="tok-p">.</span><span class="tok-nx">post</span><span class="tok-p">(</span><span class="tok-s1">'/signup'</span><span class="tok-p">,</span> <span class="tok-nx">AuthService</span><span class="tok-p">.</span><span class="tok-nx">signup</span><span class="tok-p">)</span>
<span class="tok-nx">openApi</span><span class="tok-p">.</span><span class="tok-nx">post</span><span class="tok-p">(</span><span class="tok-s1">'/validateToken'</span><span class="tok-p">,</span> <span class="tok-nx">AuthService</span><span class="tok-p">.</span><span class="tok-nx">validateToken</span><span class="tok-p">)</span>
<span class="tok-p">}</span></code></pre>
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<h3 id="frontend-implementar-autenticação"><a class="anchor" href="#frontend-implementar-autenticação"></a>1.3. Frontend: Implementar Autenticação</h3>
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<h4 id="criar-componente-em-navbar-em"><a class="anchor" href="#criar-componente-em-navbar-em"></a>1.3.1. Criar componente <em>navbar</em></h4>
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<div class="title">Listagem 13 - <em>Criar componente navbar.jsx</em></div>
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<div class="title"><code>my-money-app/frontend/src/common/template/navbar.jsx</code></div>
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<pre class="pygments highlight"><code data-lang="javascript"><span class="tok-kr">import</span> <span class="tok-nx">React</span><span class="tok-p">,</span> <span class="tok-p">{</span> <span class="tok-nx">Component</span> <span class="tok-p">}</span> <span class="tok-nx">from</span> <span class="tok-s1">'react'</span>
<span class="tok-kr">import</span> <span class="tok-p">{</span> <span class="tok-nx">connect</span> <span class="tok-p">}</span> <span class="tok-nx">from</span> <span class="tok-s1">'react-redux'</span>
<span class="tok-kr">import</span> <span class="tok-p">{</span> <span class="tok-nx">bindActionCreators</span> <span class="tok-p">}</span> <span class="tok-nx">from</span> <span class="tok-s1">'redux'</span>
<span class="tok-kr">import</span> <span class="tok-p">{</span> <span class="tok-nx">logout</span> <span class="tok-p">}</span> <span class="tok-nx">from</span> <span class="tok-s1">'../../auth/authActions'</span>
<span class="tok-kr">class</span> <span class="tok-nx">Navbar</span> <span class="tok-kr">extends</span> <span class="tok-nx">Component</span> <span class="tok-p">{</span>
<span class="tok-nx">constructor</span><span class="tok-p">(</span><span class="tok-nx">props</span><span class="tok-p">)</span> <span class="tok-p">{</span>
<span class="tok-kr">super</span><span class="tok-p">(</span><span class="tok-nx">props</span><span class="tok-p">)</span>
<span class="tok-k">this</span><span class="tok-p">.</span><span class="tok-nx">state</span> <span class="tok-o">=</span> <span class="tok-p">{</span> <span class="tok-nx">open</span><span class="tok-o">:</span> <span class="tok-kc">false</span> <span class="tok-p">}</span>
<span class="tok-p">}</span>
<span class="tok-nx">changeOpen</span><span class="tok-p">()</span> <span class="tok-p">{</span>
<span class="tok-k">this</span><span class="tok-p">.</span><span class="tok-nx">setState</span><span class="tok-p">({</span> <span class="tok-nx">open</span><span class="tok-o">:</span> <span class="tok-o">!</span><span class="tok-k">this</span><span class="tok-p">.</span><span class="tok-nx">state</span><span class="tok-p">.</span><span class="tok-nx">open</span> <span class="tok-p">})</span>
<span class="tok-p">}</span>
<span class="tok-nx">render</span><span class="tok-p">()</span> <span class="tok-p">{</span>
<span class="tok-kr">const</span> <span class="tok-p">{</span> <span class="tok-nx">name</span><span class="tok-p">,</span> <span class="tok-nx">email</span> <span class="tok-p">}</span> <span class="tok-o">=</span> <span class="tok-k">this</span><span class="tok-p">.</span><span class="tok-nx">props</span><span class="tok-p">.</span><span class="tok-nx">user</span>
<span class="tok-k">return</span> <span class="tok-p">(</span>
<span class="tok-p">)</span>
<span class="tok-p">}</span>
<span class="tok-p">}</span>
<span class="tok-kr">const</span> <span class="tok-nx">mapStateToProps</span> <span class="tok-o">=</span> <span class="tok-nx">state</span> <span class="tok-o">=></span> <span class="tok-p">({</span><span class="tok-nx">user</span><span class="tok-o">:</span> <span class="tok-nx">state</span><span class="tok-p">.</span><span class="tok-nx">auth</span><span class="tok-p">.</span><span class="tok-nx">user</span><span class="tok-p">})</span>
<span class="tok-kr">const</span> <span class="tok-nx">mapDispatchToProps</span> <span class="tok-o">=</span> <span class="tok-nx">dispatch</span> <span class="tok-o">=></span> <span class="tok-nx">bindActionCreators</span><span class="tok-p">({</span> <span class="tok-nx">logout</span> <span class="tok-p">},</span> <span class="tok-nx">dispatch</span><span class="tok-p">)</span>
<span class="tok-kr">export</span> <span class="tok-k">default</span> <span class="tok-nx">connect</span><span class="tok-p">(</span><span class="tok-nx">mapStateToProps</span><span class="tok-p">,</span> <span class="tok-nx">mapDispatchToProps</span><span class="tok-p">)(</span><span class="tok-nx">Navbar</span><span class="tok-p">)</span></code></pre>
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