From 96e66b41169a005613fe45f47bb7d1d92950a10f Mon Sep 17 00:00:00 2001
From: xengineering <me@xengineering.eu>
Date: Mon, 16 May 2022 18:55:08 +0200
Subject: Introduce appdata configuration option

---
 config.json |  6 +++---
 main.go     | 15 ++++++++-------
 2 files changed, 11 insertions(+), 10 deletions(-)

diff --git a/config.json b/config.json
index b939d6d..513e364 100644
--- a/config.json
+++ b/config.json
@@ -6,7 +6,7 @@
 		]
 	},
 	"web":{
-		"listen":"127.0.0.1:9000",
-		"templates":"/usr/share/webiot/"
-	}
+		"listen":"127.0.0.1:9000"
+	},
+	"appdata":"/usr/share/webiot/"
 }
diff --git a/main.go b/main.go
index b8fe2e2..76e9f85 100644
--- a/main.go
+++ b/main.go
@@ -18,6 +18,7 @@ import (
 type RuntimeConfig struct {
 	Devices DevicesConfig
 	Web     WebConfig
+	Appdata string
 }
 
 type DevicesConfig struct {
@@ -26,16 +27,15 @@ type DevicesConfig struct {
 
 type WebConfig struct {
 	Listen    netip.AddrPort
-	Templates string
 }
 
 // main() contains the control flow of this program.
 func main() {
 	configPath := parseFlags()
 	c := parseConfig(configPath)
-	http.HandleFunc("/", index(c.Devices, c.Web.Templates))
+	http.HandleFunc("/", index(c.Devices, c.Appdata))
 	http.HandleFunc("/api", api())
-	http.HandleFunc("/webiot.css", css())
+	http.HandleFunc("/webiot.css", css(c.Appdata))
 	fmt.Printf("Serving at http://%s\n", c.Web.Listen)
 	log.Fatal(http.ListenAndServe(c.Web.Listen.String(), nil))
 }
@@ -73,10 +73,10 @@ func parseConfig(path string) RuntimeConfig {
 }
 
 // index() returns a HTTP handler for the index page.
-func index(devices DevicesConfig, templates string) func(http.ResponseWriter, *http.Request) {
+func index(devices DevicesConfig, appdata string) func(http.ResponseWriter, *http.Request) {
 
 	// prepare HTML
-	path := filepath.Join(templates, "index.html.tmpl")
+	path := filepath.Join(appdata, "index.html.tmpl")
 	html := mustRender(path, devices)
 
 	return func(w http.ResponseWriter, r *http.Request) {
@@ -84,10 +84,11 @@ func index(devices DevicesConfig, templates string) func(http.ResponseWriter, *h
 	}
 }
 
-func css() func(http.ResponseWriter, *http.Request) {
+func css(appdata string) func(http.ResponseWriter, *http.Request) {
 
 	// read CSS file
-	css := string(mustRead("./libweb/libweb.css"))
+	path := filepath.Join(appdata, "libweb/libweb.css")
+	css := string(mustRead(path))
 
 	return func(w http.ResponseWriter, r *http.Request) {
 		w.Header().Set("Content-Type", "text/css; charset=utf-8")
-- 
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