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package auth
import (
"encoding/base64"
"net/http"
"time"
"git.gabrielgio.me/cerrado/pkg/ext"
"git.gabrielgio.me/cerrado/templates"
)
type (
LoginHandler struct {
auth authService
}
authService interface {
CheckAuth(username, password string) bool
IssueToken() ([]byte, error)
}
)
func NewLoginHandler(auth authService) *LoginHandler {
return &LoginHandler{
auth: auth,
}
}
func (g *LoginHandler) Logout(w http.ResponseWriter, r *http.Request) error {
cookie := &http.Cookie{
Name: "auth",
Value: "",
Path: "/",
Expires: time.Unix(0, 0),
}
referer := r.Header.Get("Referer")
if referer == "" {
referer = "/"
}
http.SetCookie(w, cookie)
ext.Redirect(w, referer)
return nil
}
func (g *LoginHandler) Login(w http.ResponseWriter, r *http.Request) error {
referer := r.URL.Query().Get("referer")
// if query value is empty tries to get from header
if referer == "" {
referer = r.Header.Get("Referer")
}
if r.Method == "GET" {
ext.SetHTML(w)
login := &templates.LoginPage{
Referer: referer,
}
templates.WritePageTemplate(w, login, r.Context())
} else if r.Method == "POST" {
username := r.FormValue("username")
password := r.FormValue("password")
if !g.auth.CheckAuth(username, password) {
login := &templates.LoginPage{
Referer: referer,
ErrorMessage: "Invalid login",
}
templates.WritePageTemplate(w, login, r.Context())
} else {
bytes, err := g.auth.IssueToken()
if err != nil {
return err
}
cookie := &http.Cookie{
Name: "auth",
Value: base64.StdEncoding.EncodeToString(bytes),
Path: "/",
MaxAge: 3600,
HttpOnly: true,
Secure: true,
SameSite: http.SameSiteStrictMode,
}
http.SetCookie(w, cookie)
ext.Redirect(w, referer)
}
}
return nil
}
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