From 8de661b3bb47eec32cfbfab52c404e9fd610e8e2 Mon Sep 17 00:00:00 2001
From: Drew DeVault <sir@cmpwn.com>
Date: Thu, 22 Oct 2020 11:36:26 -0400
Subject: Hide caldav/carrdav in nav unless present

---
 renderer.go          | 11 +++++++++++
 themes/alps/nav.html |  4 ++++
 2 files changed, 15 insertions(+)

diff --git a/renderer.go b/renderer.go
index a6b4118..4875745 100644
--- a/renderer.go
+++ b/renderer.go
@@ -26,6 +26,8 @@ type GlobalRenderData struct {
 
 	Title string
 
+	HavePlugin func(name string) bool
+
 	// additional plugin-specific data
 	Extra map[string]interface{}
 }
@@ -74,6 +76,15 @@ func NewBaseRenderData(ctx *Context) *BaseRenderData {
 		Path:  strings.Split(ctx.Request().URL.Path, "/")[1:],
 		Title: "Webmail",
 		URL:   ctx.Request().URL,
+
+		HavePlugin: func(name string) bool {
+			for _, plugin := range ctx.Server.plugins {
+				if plugin.Name() == name {
+					return true
+				}
+			}
+			return false
+		},
 	}
 
 	if ctx.Session != nil {
diff --git a/themes/alps/nav.html b/themes/alps/nav.html
index 1678434..d14a862 100644
--- a/themes/alps/nav.html
+++ b/themes/alps/nav.html
@@ -6,18 +6,22 @@
       class="active"
       {{ end }}
     >Email</a>
+    {{ if call .GlobalData.HavePlugin "caldav" }}
     <a
       href="/calendar"
       {{ if eq $page "calendar" }}
       class="active"
       {{ end }}
     >Calendar</a>
+    {{ end }}
+    {{ if call .GlobalData.HavePlugin "carddav" }}
     <a
       href="/contacts"
       {{ if eq $page "contacts" }}
       class="active"
       {{ end }}
     >Contacts</a>
+    {{ end }}
     <div>
       <span>{{ .GlobalData.Username }}</span>
       <a href="/settings">Settings</a>
-- 
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