Changed the templating engine to a custom one. First bugged working example

src/templates.go

@@ -0,0 +1,94 @@
+package main
+
+import (
+	"fmt"
+	"html/template"
+	"log"
+	"os"
+	"path/filepath"
+	"time"
+
+	"github.com/gin-gonic/gin"
+)
+
+var tm *TemplateManager
+
+func init() {
+	tm = NewTemplateManager("templates", "base", "html")
+}
+
+type TemplateManager struct {
+	templates map[string]*template.Template
+	funcs     template.FuncMap
+	base      string
+	ext       string
+	dir       string
+}
+
+// NewTemplateManager initializes the manager and loads templates
+func NewTemplateManager(dir string, base string, ext string) *TemplateManager {
+	tm := &TemplateManager{
+		templates: make(map[string]*template.Template),
+		funcs: template.FuncMap{
+			"fmtTime": func(t time.Time) string {
+				return t.Local().Format("2006-01-02 15:04") // Go’s reference time
+			},
+		},
+		base: base,
+		dir:  dir,
+		ext:  ext,
+	}
+	tm.LoadTemplates()
+
+	return tm
+}
+
+// LoadTemplates parses the base template with each view template in the directory
+func (tm *TemplateManager) LoadTemplates() {
+	pattern := filepath.Join(tm.dir, "*."+tm.ext)
+	files, err := filepath.Glob(pattern)
+	if err != nil {
+		panic(err)
+	}
+	base := filepath.Join(tm.dir, tm.base+"."+tm.ext)
+
+	for _, file := range files {
+		if filepath.Base(file) == tm.base {
+			continue
+		}
+
+		name := stripAfterDot(filepath.Base(file))
+		logger.Println(name)
+
+		// Parse base + view template together
+		tpl, err := template.New(name).
+			Funcs(tm.funcs).
+			ParseFiles(base, file)
+		if err != nil {
+			panic(err)
+		}
+
+		tm.templates[name] = tpl
+	}
+}
+
+// Render executes a template by name into the given context
+func (tm *TemplateManager) Render(c *gin.Context, name string, data gin.H) error {
+	print("\nRendering template:", name, "\n")
+	u := getSessionUser(c)
+	data["CurrentUser"] = u
+
+	tpl, ok := tm.templates[name]
+	if !ok {
+		return os.ErrNotExist
+	}
+	fmt.Print(tm.templates[name])
+
+	if err := tpl.ExecuteTemplate(c.Writer, tm.base, data); err != nil {
+		log.Println("tpl error:", err)
+		c.Status(500)
+		return err
+	}
+
+	return nil
+}