app.js

const handleBlogRoute = require('./src/routes/blog');
const querystring = require('querystring');


const getPostData = (req)=>{
    const promise = new Promise((resolve,reject)=>{
        if(req.method !== 'POST'){
            resolve({});
            return;
        }


        if(req.headers['content-type'] !== 'application/json'){
            resolve({});
            return;
        }


        let postData = '';

        req.on('data',(chunk)=>{
            postData += chunk.toString();
        });

        req.on('end',()=>{
            if(!postData){
                resolve({});
                return;
            }

            resolve(
                JSON.parse(postData)
            );
        })

       
    });


    return promise;
}

const serverHandler = (req,res) =>{
    res.setHeader('Content-Type','application/json');

    const url = req.url;
   
    req.path = url.split('?')[0];

    req.query = querystring.parse(url.split('?')[1]);

    getPostData(req).then((postData)=>{
        //博客相关的路由
        req.body = postData;
        const blogDataPromise = handleBlogRoute(req,res);
        if(blogDataPromise){
            blogDataPromise.then(blogData=>{
                res.end(
                    JSON.stringify(blogData)
                )
            });
           
            return;
        }

        res.writeHead(404, {'Content-Type': 'text/plain'});

        res.write('404 Not Found');
    
        res.end();

    })

    


   

}

module.exports = serverHandler;