package handlers

import (
	"embed"
	"html/template"
	"io/fs"
	"log"
	"net/http"
	"regexp"
)

//go:embed templates/*
var templateFS embed.FS

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

var tagRe = regexp.MustCompile(`<[^>]*>`)

func stripHTML(s string) string {
	return tagRe.ReplaceAllString(s, "")
}

func ParseTemplates() (*template.Template, error) {
	funcMap := template.FuncMap{
		"plain": stripHTML,
	}
	return template.New("").Funcs(funcMap).ParseFS(templateFS, "templates/*.html")
}

func StaticHandler() http.Handler {
	sub, err := fs.Sub(staticFS, "static")
	if err != nil {
		log.Fatal(err)
	}
	return http.FileServer(http.FS(sub))
}