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Add post-auth landing page with cookie-based profile storage

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This commit is contained in:
Ian Gulliver
2025-12-28 22:53:56 -08:00
parent 7e2e16b176
commit 08b73725b1
3 changed files with 95 additions and 5 deletions
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48
main.go
View File

@@ -2,6 +2,7 @@ package main
import ( import (
"context" "context"
"encoding/base64"
"encoding/json" "encoding/json"
"html/template" "html/template"
"log" "log"
@@ -35,6 +36,11 @@ func handleStatic(w http.ResponseWriter, r *http.Request) {
name := strings.TrimPrefix(path, "/") name := strings.TrimPrefix(path, "/")
if name == "index.html" && getProfile(r) != nil {
http.Redirect(w, r, "/home.html", http.StatusSeeOther)
return
}
if strings.HasSuffix(name, ".html") { if strings.HasSuffix(name, ".html") {
t := templates.Lookup(name) t := templates.Lookup(name)
if t == nil { if t == nil {
@@ -42,13 +48,20 @@ func handleStatic(w http.ResponseWriter, r *http.Request) {
return return
} }
w.Header().Set("Content-Type", "text/html") w.Header().Set("Content-Type", "text/html")
t.Execute(w, envMap()) t.Execute(w, templateData(r))
return return
} }
http.ServeFile(w, r, filepath.Join("static", name)) http.ServeFile(w, r, filepath.Join("static", name))
} }
func templateData(r *http.Request) map[string]any {
return map[string]any{
"env": envMap(),
"profile": getProfile(r),
}
}
func envMap() map[string]string { func envMap() map[string]string {
m := map[string]string{} m := map[string]string{}
for _, e := range os.Environ() { for _, e := range os.Environ() {
@@ -59,6 +72,33 @@ func envMap() map[string]string {
return m return m
} }
func getProfile(r *http.Request) map[string]any {
cookie, err := r.Cookie("profile")
if err != nil {
return nil
}
data, err := base64.RawURLEncoding.DecodeString(cookie.Value)
if err != nil {
return nil
}
var profile map[string]any
if json.Unmarshal(data, &profile) != nil {
return nil
}
return profile
}
func setProfile(w http.ResponseWriter, profile map[string]any) {
data, _ := json.Marshal(profile)
http.SetCookie(w, &http.Cookie{
Name: "profile",
Value: base64.RawURLEncoding.EncodeToString(data),
Path: "/",
HttpOnly: true,
SameSite: http.SameSiteLaxMode,
})
}
func handleGoogleCallback(w http.ResponseWriter, r *http.Request) { func handleGoogleCallback(w http.ResponseWriter, r *http.Request) {
if r.Method != http.MethodPost { if r.Method != http.MethodPost {
http.Error(w, "method not allowed", http.StatusMethodNotAllowed) http.Error(w, "method not allowed", http.StatusMethodNotAllowed)
@@ -78,12 +118,12 @@ func handleGoogleCallback(w http.ResponseWriter, r *http.Request) {
return return
} }
response := map[string]any{ profile := map[string]any{
"email": payload.Claims["email"], "email": payload.Claims["email"],
"name": payload.Claims["name"], "name": payload.Claims["name"],
"picture": payload.Claims["picture"], "picture": payload.Claims["picture"],
} }
w.Header().Set("Content-Type", "application/json") setProfile(w, profile)
json.NewEncoder(w).Encode(response) http.Redirect(w, r, "/home.html", http.StatusSeeOther)
} }

50
static/home.html Normal file
View File

@@ -0,0 +1,50 @@
<!DOCTYPE html>
<html lang="en">
<head>
<script>document.documentElement.className = window.matchMedia('(prefers-color-scheme: dark)').matches ? 'wa-dark' : 'wa-light';</script>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>HCA Tickets</title>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@awesome.me/webawesome@3/dist-cdn/styles/themes/default.css">
<script type="module" src="https://cdn.jsdelivr.net/npm/@awesome.me/webawesome@3/dist-cdn/webawesome.loader.js"></script>
<style>
body {
font-family: var(--wa-font-sans);
display: flex;
justify-content: center;
align-items: center;
min-height: 100vh;
margin: 0;
}
.profile {
display: flex;
align-items: center;
gap: 1rem;
}
.profile img {
width: 64px;
height: 64px;
border-radius: 50%;
}
</style>
</head>
<body style="opacity: 0">
<wa-card>
<div class="profile" slot="header">
<img src="{{.profile.picture}}" alt="Profile">
<div>
<div><strong>{{.profile.name}}</strong></div>
<div>{{.profile.email}}</div>
</div>
</div>
<p>Welcome to HCA Tickets!</p>
</wa-card>
<script type="module">
window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change', e => {
document.documentElement.className = e.matches ? 'wa-dark' : 'wa-light';
});
await customElements.whenDefined('wa-card');
document.body.style.opacity = 1;
</script>
</body>
</html>

2
static/index.html
View File

@@ -20,7 +20,7 @@
</head> </head>
<body style="opacity: 0"> <body style="opacity: 0">
<div id="g_id_onload" <div id="g_id_onload"
data-client_id="{{.GOOGLE_CLIENT_ID}}" data-client_id="{{.env.GOOGLE_CLIENT_ID}}"
data-login_uri="/auth/google/callback" data-login_uri="/auth/google/callback"
data-ux_mode="redirect" data-ux_mode="redirect"
data-use_fedcm_for_button="true" data-use_fedcm_for_button="true"