var http = require('http');
var fs = require('fs');
var url = require('url');
var qs = require('querystring');
function templateHTML(title, list, body){
return `<!doctype html>
<html>
<head>
<title>WEB1 - ${title}</title>
<meta charset="utf-8">
</head>
<body>
<h1><a href="/">WEB</a></h1>
${list}
<a href="/create">create</a>
${body}
</body>
</html>
`;
}
function templateList(filelist){
var list =`<ul>`;
var i = 0;
while(i < filelist.length){
list += `<li><a href="/?id=${filelist[i]}">${filelist[i]}</a></li>`
i += 1;
}
list = list + `</ul>`;
return list
}
var app = http.createServer(function(request,response){
var _url = request.url;
var queryData = url.parse(_url, true).query;
var pathname = url.parse(_url, true).pathname;
console.log(pathname);
if(pathname === '/'){
if(queryData.id === undefined){
fs.readdir('./data', function(error, filelist){
var title = 'Welcome';
var description = 'Hello, Node.js';
var list = templateList(filelist);
var template = templateHTML(title, list, `<h2>${title}</h2><p>${description}</p>`);
response.writeHead(200);
response.end(template);
});
} else{
fs.readdir('./data', function(error, filelist){
fs.readFile(`data/${queryData.id}`, 'utf8', function(err, description){
var title = queryData.id;
var list = templateList(filelist);
var template = templateHTML(title, list, `<h2>${title}</h2><p>${description}</p>`);
response.writeHead(200);
response.end(template);
});
});
}
} else if(pathname === '/create'){
fs.readdir('./data', function(error, filelist){
var title = 'WEB -create';
var list = templateList(filelist);
var template = templateHTML(title, list,`
<form action="http://localhost:3000/process_create" method="post">
<p>
<input type="text" name="title" placeholder="title">
</p>
<p>
<textarea name="description"></textarea>
</p>
<p>
<input type="submit">
</p>
</form>
`
);
response.writeHead(200);
response.end(template);
});
} else if(pathname === '/process_create'){
var body = '';
// post방식으로 데이터 처리할 때,
// 데이터가 너무 많을 경우 대비한 방식(콜백으로 처리)
request.on('data', function(data){
// body 데이터에 콜백 실해 시마다 data추가
body += data;
});
// 더 이상 들어올 정보 없을 때,
// 'end'가 있는 request.on()실행
request.on('end', function(){
var post = qs.parse(body);
var title = post.title;
var description = post.description;
console.log(post.title);
});
response.writeHead(200);
response.end('Success');
} else{
response.writeHead(404);
response.end('Not found');
}
});
app.listen(3000);
