refactor: migrate from templ to html/template

templates/renderer.go

@@ -0,0 +1,77 @@
+package templates
+
+import (
+	"fmt"
+	"html/template"
+	"io"
+	"log"
+	"path/filepath"
+	"sync"
+)
+
+var (
+	once     sync.Once
+	renderer *Renderer
+)
+
+type Renderer struct {
+	templates map[string]*template.Template
+}
+
+func GetRenderer() *Renderer {
+	once.Do(func() {
+		renderer = &Renderer{
+			templates: make(map[string]*template.Template),
+		}
+		
+		funcs := template.FuncMap{
+			"dict": func(values ...any) map[string]any {
+				m := make(map[string]any)
+				for i := 0; i < len(values)-1; i += 2 {
+					key, ok := values[i].(string)
+					if !ok {
+						continue
+					}
+					m[key] = values[i+1]
+				}
+				return m
+			},
+		}
+
+		pages, err := filepath.Glob(filepath.Join(".", "templates", "*.gohtml"))
+		if err != nil {
+			log.Fatalf("failed to glob page templates: %v", err)
+		}
+
+		components, err := filepath.Glob(filepath.Join(".", "templates", "components", "*.gohtml"))
+		if err != nil {
+			log.Fatalf("failed to glob component templates: %v", err)
+		}
+
+		for _, page := range pages {
+			name := filepath.Base(page)
+			if name == "base.gohtml" {
+				continue
+			}
+
+			tmpl := template.New(name).Funcs(funcs)
+			tmpl = template.Must(tmpl.ParseFiles(filepath.Join(".", "templates", "base.gohtml")))
+			tmpl = template.Must(tmpl.ParseFiles(page))
+			if len(components) > 0 {
+				tmpl = template.Must(tmpl.ParseFiles(components...))
+			}
+
+			renderer.templates[name] = tmpl
+			log.Printf("Loaded page template: %s", name)
+		}
+	})
+	return renderer
+}
+
+func (r *Renderer) ExecuteTemplate(wr io.Writer, name string, data any) error {
+	tmpl, ok := r.templates[name]
+	if !ok {
+		return fmt.Errorf("template %s not found", name)
+	}
+	return tmpl.ExecuteTemplate(wr, "base.gohtml", data)
+}