initial commit

templates.go

@@ -0,0 +1,66 @@
+package main
+
+import (
+	"embed"
+	"html/template"
+	"io/fs"
+	"net/http"
+	"time"
+)
+
+//go:embed templates/*.html
+var templateFS embed.FS
+
+//go:embed static
+var staticFS embed.FS
+
+// staticHandler serves the embedded static/ directory at /static/.
+func staticHandler() http.Handler {
+	sub, err := fs.Sub(staticFS, "static")
+	if err != nil {
+		panic(err)
+	}
+	return http.StripPrefix("/static/", http.FileServer(http.FS(sub)))
+}
+
+var tmpl *template.Template
+
+var funcMap = template.FuncMap{
+	"money": func(v float64) string { return fmtNum(v) },
+	"hours": func(minutes float64) string { return fmtNum(minutes / 60.0) },
+	"datef": func(t time.Time) string { return t.Format("02 Jan") },
+	"hm":    func(t time.Time) string { return t.Format("15:04") },
+	"hmp": func(t *time.Time) string {
+		if t == nil {
+			return ""
+		}
+		return t.Format("15:04")
+	},
+	"timef": func(t *time.Time) string {
+		if t == nil {
+			return "running…"
+		}
+		return t.Format("15:04")
+	},
+	"dateInput": func(t time.Time) string { return t.Format("02-01-2006") },
+	"today":     func() string { return time.Now().Format("02-01-2006") },
+	"rfc3339":   func(t time.Time) string { return t.Format(time.RFC3339) },
+}
+
+func parseTemplates() error {
+	t, err := template.New("").Funcs(funcMap).ParseFS(templateFS, "templates/*.html")
+	if err != nil {
+		return err
+	}
+	tmpl = t
+	return nil
+}
+
+// render executes a named template and writes any error to the log/response.
+func (s *Server) render(w http.ResponseWriter, name string, data any) {
+	w.Header().Set("Content-Type", "text/html; charset=utf-8")
+	if err := tmpl.ExecuteTemplate(w, name, data); err != nil {
+		s.errl.Printf("render %s: %v", name, err)
+		http.Error(w, "template error", http.StatusInternalServerError)
+	}
+}