package app

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

type Renderer struct {
	basePath string
	tpls     *template.Template
}

func NewRenderer(basePath string) *Renderer {
	funcs := template.FuncMap{
		"abs": func(p string) string {
			if basePath == "" {
				return p
			}
			if !strings.HasPrefix(p, "/") {
				p = "/" + p
			}
			return basePath + p
		},
		"join": path.Join,
	}
	t := template.New("base").Funcs(funcs)
	t = template.Must(t.ParseFS(tfs(),
		"layout.html",
		"login.html",
		"users.html",
		"user.html",
		"access.html",
		"tokens.html",
		"admins.html",
		"audit.html",
		"error.html",
	))
	return &Renderer{basePath: basePath, tpls: t}
}

type PageData struct {
	Title   string
	Admin   string
	Role    string
	CSRF    string
	Flash   string
	Error   string

	Users   any
	User    any
	Tokens  any
	Admins  any
	Audit   any
	Access  any
	Next    string
}

func (r *Renderer) Render(w http.ResponseWriter, name string, data PageData) {
	w.Header().Set("Content-Type", "text/html; charset=utf-8")
	_ = r.tpls.ExecuteTemplate(w, name, data)
}