node.js-sample-project/fortune.js at master · macoril/node.js-sample-project · GitHub

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var PORT = 8080;
var HOSTNAME = '127.0.0.1';

// load necessary modules
var http = require('http');
var querystring = require('querystring');
var crypto = require('crypto')

//var htmlHeader = '<!DOCTYPE HTML>
var htmlHeader = (function() {/*
<!DOCTYPE html>
<html lang="ja">
  <head>
    <meta charset="utf-8">
    <title>fortune telling</title>
    <style>
      .content {
        width: 480px;
        text-align: center;
        border; 4px solid lightblue;
        padding; 4px;
        margin; 16px auto;
      }
      .main-form div {margin-bottom; 4px;}
      .result {
        display; black;
        font-size; 200%;
        color; red;
        margin; 4px auto;
        border; 1px solid;
        width; 4em;
      }
    </style>
  </html>
  <body>
    <div class="content">
    <h1>fortune telling</h1>
*/}).toString().match(/\/\*([^]*)\*\//)[1];
var htmlMainForm = (function() {/*
<div class="main-form">
  <form method="post" action="/">
    <div>
      <label>名前：<input type="text" name="name" size="20"></label>
    </div>
    <div>
      生年月日：
      <label><input type="text" name="year" size="5">年</label>
      <label><input type="text" name="month" size="3">月</label>
      <label><input type="text" name="day" size="3">日</label>
    </div>
    <div>
      性別：
      <label><input type="radio" name="sex" value="male">男</label>
      <label><input type="radio" name="sex" value="female">女</label>
    </div>
    <input type="submit" value="占う">
  </form>
</div>
*/}).toString().match(/\/\*([^]*)\*\//)[1];

var htmlFooter = '</div></body></html>';

// 「<」や「>」、「&」といった文字列をエンティティに変換する
function escapeHtmlSpecialChar(html) {
  if (html === undefined) {
    return ;
  } else {
    return require('validator').escape(html);
  }
};

//var server = http.createServer(onRequest);

//function onRequest(req, res) {
http.createServer(function (req, res) {
  if (req.url !== '/') {
    res.writeHead(404, {'Content-type': 'text/plain'});
    res.end('Error 404: Not Found.');
    return ;
  }

  // if the request is POST, tell the fortune from data sent.
  if (req.method === 'POST') {
    // get data sent
    req.data = '';
    req.on('data', function (chunk) {
      req.data += chunk;
    });
    req.on('end', sendResponse);
    return ;

  // if the request is not POST, send mainform.
  } else {
    res.writeHead(200, {'Content-Type': 'text/html; charset=UTF-8'});
    res.write(htmlHeader);
    res.write(htmlMainForm);
    res.write(htmlFooter);
    res.end();
    return ;
  }

  function sendResponse() {
    var query = querystring.parse(req.data);

    // compute a MD5 hash from a concatenation of the posted data.
    var seed = query.name + query.year + query.month + query.day + query.sex;
    var hash = crypto.createHash('md5');
    hash.update(seed);
    var hashValue = hash.digest('hex');

    var fortuneKey = Number('0x' + hashValue.slice(0,2));

    var result = '';
    if (fortuneKey < 10) {
      result = '大凶';
    } else if (fortuneKey < 50) {
      result = '凶';
    } else if (fortuneKey < 100) {
      result = '末吉';
    } else if (fortuneKey < 150) {
      result = '吉';
    } else if (fortuneKey < 245) {
      result = '中吉';
    } else {
      result = '大吉';
    }

    var resultStr = '<div><p>'
      + escapeHtmlSpecialChar(query.year) + '年'
      + escapeHtmlSpecialChar(query.month) + '月'
      + escapeHtmlSpecialChar(query.day) + '日生まれの'
      + escapeHtmlSpecialChar(query.name) + 'さん（'
      + ((query.sex == 'male') ? '男性' : '女性')
      + '）の運勢は…'
      + '<span class="result">'
      + result + '</span>です。</p></div>'
      + '<a href="/">トップに戻る</a>';

    res.writeHead(200, {'Content-Type': 'text/html; charset=UTF-8'});
    res.write(htmlHeader);
    res.write(resultStr);
    res.write(htmlFooter);
    res.end();
  }
}).listen(PORT);

console.log('Server running at http://' + HOSTNAME + ':' + PORT + '/');