From 88af7a818f2ef3c45c4e849512ca1f6289a9dce2 Mon Sep 17 00:00:00 2001
From: xengineering <me@xengineering.eu>
Date: Sun, 12 Feb 2023 19:18:48 +0100
Subject: Centralize templating

This makes templating easier and allows to use partial templates.
---
 handler.go   |  9 +++------
 main.go      |  3 +++
 templates.go | 22 ++++++++--------------
 3 files changed, 14 insertions(+), 20 deletions(-)

diff --git a/handler.go b/handler.go
index 0166d95..fae834a 100644
--- a/handler.go
+++ b/handler.go
@@ -42,8 +42,7 @@ func indexGet(w http.ResponseWriter, r *http.Request) {
 		}
 	}
 
-	path := filepath.Join(config.Http.Templates, "index.html")
-	ServeTemplate(w, "index", path, elements)
+	ServeTemplate(w, "index.html", elements)
 }
 
 func recipeGet(w http.ResponseWriter, r *http.Request) {
@@ -101,8 +100,7 @@ func recipeGet(w http.ResponseWriter, r *http.Request) {
 	goldmark.Convert([]byte(elements[0].DescriptionMarkdown), &buf)
 	elements[0].RenderedDescriptionMarkdown = buf.String()
 
-	path := filepath.Join(config.Http.Templates, "recipe.html")
-	ServeTemplate(w, "recipe", path, elements[0])
+	ServeTemplate(w, "recipe.html", elements[0])
 }
 
 func recipePost(w http.ResponseWriter, r *http.Request) {
@@ -175,8 +173,7 @@ func recipeEditGet(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	path := filepath.Join(config.Http.Templates, "recipe_edit.html")
-	ServeTemplate(w, "recipe", path, elements[0])
+	ServeTemplate(w, "recipe_edit.html", elements[0])
 }
 
 func recipeEditPost(w http.ResponseWriter, r *http.Request) {
diff --git a/main.go b/main.go
index bdea383..483633c 100644
--- a/main.go
+++ b/main.go
@@ -6,14 +6,17 @@ import (
 	"os"
 	"os/signal"
 	"syscall"
+	"text/template"
 )
 
 var config RuntimeConfig
 var db *sql.DB
+var templates *template.Template
 
 func main() {
 	log.Printf("Started Ceres recipe server.\n")
 	config = GetRuntimeConfig()
+	templates = setupTemplates()
 	db = setupDatabase()
 	provideShutdown()
 	runServer()
diff --git a/templates.go b/templates.go
index d18017f..6b4fe51 100644
--- a/templates.go
+++ b/templates.go
@@ -1,28 +1,22 @@
 package main
 
 import (
-	"io/ioutil"
 	"log"
 	"net/http"
 	"text/template" // FIXME switch to html/template for security reasons
 	// and make a workaround for rendered Markdown insertion
 )
 
-func ServeTemplate(w http.ResponseWriter, name string, path string, data interface{}) {
-
-	templateFile, err := ioutil.ReadFile(path)
+func setupTemplates() *template.Template {
+	t, err := template.ParseGlob(config.Http.Templates + "/*.html")
 	if err != nil {
-		log.Print(err)
-		http.Error(w, http.StatusText(404), 404)
-		return
+		panic(err)
 	}
-	tmpl, err := template.New(name).Parse(string(templateFile))
-	if err != nil {
-		log.Print(err)
-		http.Error(w, http.StatusText(404), 404)
-		return
-	}
-	err = tmpl.Execute(w, data)
+	return t
+}
+
+func ServeTemplate(w http.ResponseWriter, name string, data interface{}) {
+	err := templates.ExecuteTemplate(w, name, data)
 	if err != nil {
 		log.Print(err)
 		http.Error(w, http.StatusText(404), 404)
-- 
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