Do some better error handling in template rendering

conf.toml

@@ -1,3 +1,4 @@
 extension = "md"
 notesdir = "saved_notes"
 templatesdir = "templates"
+basetemplate = "base.tmpl.html"

internal/conf/conf.go

@@ -11,6 +11,7 @@ type Config struct {
 	Extension    string
 	NotesDir     string
 	TemplatesDir string
+	BaseTemplate string
 }
 
 var Conf Config

internal/notes/views/views.go

@@ -1,7 +1,6 @@
 package views
 
 import (
-	"html/template"
 	"log"
 	"net/http"
 	"os"
@@ -11,6 +10,7 @@ import (
 	urls "gitea.gwairfelin.com/max/gispatcho"
 	"gitea.gwairfelin.com/max/gonotes/internal/conf"
 	"gitea.gwairfelin.com/max/gonotes/internal/notes"
+	"gitea.gwairfelin.com/max/gonotes/internal/templ"
 )
 
 var myurls urls.URLs
@@ -37,9 +37,9 @@ func view(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	context := map[string]any{"note": note, "urlEdit": urlEdit}
+	context := templ.Ctx{"note": note, "urlEdit": urlEdit}
 	note.Render()
-	err = renderTemplate(w, "view.html", context)
+	err = templ.RenderTemplate(w, "view.tmpl.html", context)
 	if err != nil {
 		log.Print(err.Error())
 		http.Error(w, "Couldn't load template", http.StatusInternalServerError)
@@ -55,8 +55,8 @@ func edit(w http.ResponseWriter, r *http.Request) {
 	}
 
 	urlSave := myurls.Reverse("save", urls.Repl{"note": title})
-	context := map[string]any{"note": note, "urlSave": urlSave}
-	err = renderTemplate(w, "edit.html", context)
+	context := templ.Ctx{"note": note, "urlSave": urlSave}
+	err = templ.RenderTemplate(w, "edit.tmpl.html", context)
 	if err != nil {
 		log.Print(err.Error())
 		http.Error(w, "Couldn't load template", http.StatusInternalServerError)
@@ -89,20 +89,10 @@ func list(w http.ResponseWriter, r *http.Request) {
 		}
 	}
 
-	err = renderTemplate(w, "list.tmpl.html", map[string]any{"titles": titles})
+	err = templ.RenderTemplate(w, "list.tmpl.html", templ.Ctx{"titles": titles})
 	if err != nil {
 		log.Print(err.Error())
 		http.Error(w, "Internal Server Error", http.StatusInternalServerError)
 		return
 	}
 }
-
-func renderTemplate(w http.ResponseWriter, tmpl string, context any) error {
-	files := []string{
-		filepath.Join(conf.Conf.TemplatesDir, "base.tmpl.html"),
-		filepath.Join(conf.Conf.TemplatesDir, tmpl),
-	}
-	t, err := template.ParseFiles(files...)
-	t.ExecuteTemplate(w, "base", context)
-	return err
-}

internal/templ/templ.go

@@ -0,0 +1,29 @@
+package templ
+
+import (
+	"html/template"
+	"net/http"
+	"os"
+	"path/filepath"
+
+	"gitea.gwairfelin.com/max/gonotes/internal/conf"
+)
+
+type Ctx map[string]any
+
+func RenderTemplate(w http.ResponseWriter, tmpl string, context any) error {
+	files := []string{
+		filepath.Join(conf.Conf.TemplatesDir, conf.Conf.BaseTemplate),
+		filepath.Join(conf.Conf.TemplatesDir, tmpl),
+	}
+
+	for _, f := range files {
+		_, err := os.Stat(f)
+		if err != nil {
+			return err
+		}
+	}
+	t, err := template.ParseFiles(files...)
+	t.ExecuteTemplate(w, "base", context)
+	return err
+}