Implement oidc client of sorts

internal/conf/conf.go

@@ -60,6 +60,14 @@ type Config struct {
 	NotesDir   string
 	LogAccess  bool
 	Production bool
+	OIDC       struct {
+		ClientID     string `toml:"client_id"`
+		ClientSecret string `toml:"client_secret"`
+		AuthURL      string `toml:"auth_url"`
+		TokenURL     string `toml:"token_url"`
+		RedirectURL  string `toml:"redirect_url"`
+		UserinfoURL  string `toml:"userinfo_url"`
+	}
 }
 
 var (

internal/conf/templates/base.tmpl.html

@@ -62,9 +62,15 @@
                             </ul>
                         </li>
                         {{template "navLinks" .}}
+                        {{if eq .user "anon"}}
+                        <li>
+                            <a class="nav-link" href="/auth/oauth/login/">Login</a>
+                        </li>
+                        {{else}}
                         <li>
                             <a class="nav-link" href="/logout/">Logout {{.user}}</a>
                         </li>
+                        {{end}}
                     </ul>
                     {{template "navExtra" .}}
                 </div>