From 0adcee59a57178dc7706a43a15aa5b90fe1cb1ee Mon Sep 17 00:00:00 2001
From: Thibaut Horel <thibaut.horel@gmail.com>
Date: Thu, 27 Dec 2018 10:13:29 -0500
Subject: WIP: add login template

---
 main.go              | 27 ++++++++++++++++++---------
 store.go             | 35 ++++++++++++++++++++++++-----------
 templates/login.tmpl | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 91 insertions(+), 20 deletions(-)
 create mode 100644 templates/login.tmpl

diff --git a/main.go b/main.go
index 2c79316..5317ffa 100644
--- a/main.go
+++ b/main.go
@@ -1,13 +1,16 @@
 package main
 
 import (
+	"html/template"
 	"log"
 	"net/http"
+	"strconv"
 	"time"
 )
 
 type App struct {
 	Store
+	Template *template.Template
 }
 
 func logMux(handler http.Handler) http.Handler {
@@ -18,15 +21,15 @@ func logMux(handler http.Handler) http.Handler {
 	})
 }
 
-func (app *App) rootHandler(w http.ResponseWriter, r *http.Request) {
+func (app *App) validateHandler(w http.ResponseWriter, r *http.Request) {
 	c, err := r.Cookie("id")
 	//log.Println(r.Header.Get("X-Original-URI"))
 	//log.Println(r.Host)
 	if err != nil {
 		w.WriteHeader(http.StatusUnauthorized)
 	} else {
-		if s, ok := app.Get(c.Value); ok {
-			w.Header().Set("X-Remote-User", s.UserId)
+		if s, ok := app.GetSession(c.Value); ok {
+			w.Header().Set("X-Remote-User", strconv.FormatInt(s.UserId, 10))
 			w.WriteHeader(http.StatusOK)
 		} else {
 			log.Println("Session does not exist:", c.Value)
@@ -42,20 +45,26 @@ func (app *App) loginHandler(w http.ResponseWriter, r *http.Request) {
 		} else {
 			username := r.Form.Get("username")
 			password := r.Form.Get("password")
-			row := app.Query("SELECT id FROM users WHERE user_name = ?", username)
-			var id int64
-			if err := row.rowScan(&id); err != nil {
-				panic(err)
+			u, ok := app.GetUser(username)
+			if ok && (u.Password == password) {
+
+			} else {
+
 			}
 		}
+	} else if r.Method == http.MethodGet {
+		app.Template.ExecuteTemplate(w, "login.tmpl", nil)
 	}
+
 }
 
 func main() {
 	//log.SetFlags(log.LstdFlags)
 	store := NewPgStore()
-	app := &App{store}
-	http.HandleFunc("/", app.rootHandler)
+	template := template.Must(template.New("").ParseGlob("templates/*.tmpl"))
+	app := &App{store, template}
+	http.HandleFunc("/validate", app.validateHandler)
+	http.HandleFunc("/login", app.loginHandler)
 	if err := http.ListenAndServe(":8080", logMux(http.DefaultServeMux)); err != nil {
 		panic(err)
 	}
diff --git a/store.go b/store.go
index 55d808b..1db6411 100644
--- a/store.go
+++ b/store.go
@@ -15,32 +15,45 @@ type Session struct {
 type User struct {
 	Id       int64
 	UserName string
+	Password string
 }
 
 type Store interface {
 	GetSession(id string) (*Session, bool)
-	GetUser(id int64) (*User, bool)
+	GetUser(name string) (*User, bool)
 }
 
 type PgStore struct {
 	*sql.DB
-	cache map[string]*Session
+	sessionCache map[string]*Session
 }
 
-func NewPgStore() *PgSessionStore {
+func NewPgStore() *PgStore {
 	db, err := sql.Open("postgres", "postgres://auth_master:pass@localhost/authdb")
 	if err != nil {
 		log.Panic(err)
 	}
-	return &PgSessionStore{db, make(map[string]*Session)}
+	return &PgStore{db, make(map[string]*Session)}
 }
 
-func (store *PgSessionStore) Get(id string) (*Session, bool) {
-	s, ok := store.cache[id]
-	if !ok {
-		row := store.QueryRow("SELECT id, user_id FROM session WHERE id = ?", id)
-		var s Session
-		row.Scan(&s.
+func (store *PgStore) GetSession(id string) (*Session, bool) {
+	s, ok := store.sessionCache[id]
+	if ok {
+		return s, true
 	}
-	return s, ok
+	s = new(Session)
+	row := store.QueryRow("SELECT id, user_id FROM session WHERE id = $1", id)
+	if err := row.Scan(s.Id, s.UserId); err != nil {
+		return nil, false
+	}
+	return s, true
+}
+
+func (store *PgStore) GetUser(name string) (*User, bool) {
+	u := new(User)
+	row := store.QueryRow("SELECT id, user_name, password FROM user WHERE user_name = $1", name)
+	if err := row.Scan(u.Id, u.UserName, u.Password); err != nil {
+		return nil, false
+	}
+	return u, true
 }
diff --git a/templates/login.tmpl b/templates/login.tmpl
new file mode 100644
index 0000000..bb97d2e
--- /dev/null
+++ b/templates/login.tmpl
@@ -0,0 +1,49 @@
+<!DOCTYPE html>
+<html lang="en">
+    <head>
+    <title></title>
+    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+<style>
+body{width:400px; margin: 0 auto; font-family: "Source Sans Pro"; font-size: 15px}
+form{margin-top: 10em}
+form hr{border: none; border-top: 1px solid #e6e6e6; margin: 1.5em 0}
+form h4{font-weight: 300; font-size: 19px}
+label {font-weight: bold}
+input {border: 1px solid #cccccc; border-radius: 0; height:1em; padding: 1em;
+	transition: border-color ease-in-out .15s,box-shadow ease-in-out .15s;
+	-webkit-transition: border-color ease-in-out .15s,-webkit-box-shadow ease-in-out .15s; }
+input:focus { border-color: #66afe9; outline: 0;
+	-webkit-box-shadow: inset 0 1px 1px rgba(0,0,0,0.075),0 0 8px rgba(102,175,233,0.6);
+	box-shadow: inset 0 1px 1px rgba(0,0,0,0.075),0 0 8px rgba(102,175,233,0.6);}
+button { height: 1em; padding: 1em; border: 1px solid #2780e3; border-radius:
+	0; vertical-align: middle; text-align: center; background-color: #2780e3;
+line-height: 1em; color: white; font-size: inherit; font-family: inherit;}
+</style>
+  </head>
+  <body>
+
+<form action="/login" role="form"  method="post">
+  <h4>Connexion</h4>
+  <hr>
+  <div>
+	<label for="name">Nom :</label>
+	<input type="text" id="name" name="username" placeholder="Prénom"/>
+  </div>
+  <div>
+	<label for="password">Mot de passe :</label>
+	<input type="password" id="password" name="password" placeholder="Mot de passe"/>
+  </div>
+  <div>
+	  <button type="submit" name="login">Se Connecter</button>
+  </div>
+  <hr>
+</form>
+
+<div class="alert alert-danger" role="alert">
+	<span class="glyphicon glyphicon-exclamation-sign" aria-hidden="true">
+	</span>
+</div>
+
+  </body>
+</html>
-- 
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