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main.go
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main.go
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package main
import (
"fmt"
"github.com/julienschmidt/httprouter"
"google.golang.org/appengine"
"google.golang.org/appengine/datastore"
"google.golang.org/appengine/log"
"html/template"
"io/ioutil"
"net/http"
)
type User struct {
Email string
UserName string `datastore:"-"`
Password string
}
var tpl *template.Template
func init() {
r := httprouter.New()
http.Handle("/", r)
r.GET("/", Home)
r.GET("/form/login", Login)
r.GET("/form/signup", Signup)
r.POST("/api/checkusername", checkUserName)
r.POST("/api/createuser", createUser)
http.Handle("/favicon.ico", http.NotFoundHandler())
http.Handle("/public/", http.StripPrefix("/public", http.FileServer(http.Dir("public/"))))
tpl = template.Must(template.ParseGlob("templates/html/*.html"))
}
func Home(res http.ResponseWriter, req *http.Request, _ httprouter.Params) {
memTemplate(res, req, "Homepage", "home.html")
}
func Login(res http.ResponseWriter, req *http.Request, _ httprouter.Params) {
memTemplate(res, req, "Loginpage", "login.html")
}
func Signup(res http.ResponseWriter, req *http.Request, _ httprouter.Params) {
memTemplate(res, req, "Signuppage", "signup.html")
}
func checkUserName(res http.ResponseWriter, req *http.Request, _ httprouter.Params) {
ctx := appengine.NewContext(req)
bs, err := ioutil.ReadAll(req.Body)
sbs := string(bs)
log.Infof(ctx, "REQUEST BODY: %v", sbs)
var user User
key := datastore.NewKey(ctx, "Users", sbs, 0, nil)
err = datastore.Get(ctx, key, &user)
// if there is an err, there is NO user
log.Infof(ctx, "ERR: %v", err)
if err != nil {
// there is an err, there is a NO user
fmt.Fprint(res, "false")
return
} else {
fmt.Fprint(res, "true")
}
}
func createUser(res http.ResponseWriter, req *http.Request, _ httprouter.Params) {
ctx := appengine.NewContext(req)
NewUser := User{
Email: req.FormValue("email"),
UserName: req.FormValue("userName"),
Password: req.FormValue("password"),
}
key := datastore.NewKey(ctx, "Users", NewUser.UserName, 0, nil)
key, err := datastore.Put(ctx, key, &NewUser)
// this is the only error checking I added; any others on this page needed?
if err != nil {
log.Errorf(ctx, "error adding todo: %v", err)
http.Error(res, err.Error(), 500)
return
}
http.Redirect(res, req, "/", 302)
}
/*
TO DO:
session
-memcache templates
- uuid in a cookie
--- https while logged in? - depends upon security required
- encrypt password on datastore?
--- never store an unencrypted password, so, resoundingly, YES
--- sha-256 fast hash value
- user memcache?
- datastore / memcache
session interface change
- change login button to logout when user logged in
post tweets
follow people
see tweets for everyone
see tweets for individual user
*/