package httpapi

import (
	"embed"
	"html/template"
	"net/http"
	"path"
	"strings"
	"sync"
)

//go:embed templates/*.tmpl
var uiFS embed.FS

//go:embed static/*
var staticFS embed.FS

var (
	tplOnce sync.Once
	tpl     *template.Template
)

func (s *Server) parseTemplatesOnce() {
	tplOnce.Do(func() {
		// Parse all templates under templates/
		t := template.New("base").Funcs(template.FuncMap{})
		t = template.Must(t.ParseFS(uiFS, "templates/*.tmpl"))
		tpl = t
	})
}

func (s *Server) render(w http.ResponseWriter, name string, data map[string]any) {
	s.parseTemplatesOnce()
	if data == nil {
		data = map[string]any{}
	}
	data["Version"] = s.Version
	data["Commit"] = s.Commit
	base := strings.TrimSuffix(path.Base(name), path.Ext(name))
	if base == "dashboard" {
		data["Title"] = "sojuboy"
	} else {
		data["Title"] = strings.Title(base)
	}
	w.Header().Set("Content-Type", "text/html; charset=utf-8")
	_ = tpl.ExecuteTemplate(w, base, data)
}