#README a simple server based on flask

##API according to the requirements, this server does not conform to REST exactly but uses verbs in part of its urls.

###/login

• POST

   {"username": "user",
   "password": "pw" }

  return:

   成功:
   	{
   		"status": true
   	}
   
   	or
   	
   	
   失败:
   	{
   		"status": false,
   		"cause": "the reason or cause of this failure"
   	}
  

###/logout

• GET

   未登录:
   	{
   		"status": false,
    		"cause": "unauthorized"
    	}
    	
    	or
    	
    	
   已登录:
   	{
   		"status": true
   	}

###/register

• POST

  create a new user

   {"username": "user",
   "password": "pw" }

  return:

   	{
   		"status": false, 
   		"cause": "username already exists"
   	}
   	
   	or
   	
   	{
   		"status": true
   	}

###/users/username/projects/pj_id

ATTENTION: POST and DELETE require login. Otherwise the server returns

{
	"status": false, 
	"cause": "unauthroized"
}

• POST

  what this route cares about is the uploaded file. any file will be saved to replace the former file in this project

  if the project with the pj_id does not exist yet, then it will be created and your file will be saved too.

  return:

   	{
   		"status": false, 
   		"cause": "cause"
   	}
   	
   	or
   	
   	{
   		"status": true
   	}

• DELETE

  the whole project folder will be deleted from the server.

   	{
   		"status": false, 
   		"cause": "cause"
   	}
   	
   	or
   	
   	{
   		"status": true
  

###/users/username/projects/pj_id/share

• GET

  return the cover html for corresponding project. use this to share the project.