webservice/js_library.go

package webservice

import (
	// Standard
	"embed"
	"fmt"
	"net/http"
	"regexp"
)

var (
	//go:embed static/js
	embedded embed.FS
	pathMatcher *regexp.Regexp = regexp.MustCompile("^/_js/v[0-9]+/(.*)$")
)

func (service *Service) staticJSHandler(w http.ResponseWriter, r *http.Request) {
	var path string
	if comp := pathMatcher.FindStringSubmatch(r.URL.Path); comp != nil {
		path = fmt.Sprintf("static/js/%s", comp[1])
	} else {
		service.logger.Debug("webservice", "request", r.URL.Path)
		return
	}

	service.logger.Debug("webservice", "request", r.URL.Path, "path", path)
	w.Header().Add("Content-Type", "text/javascript")

	contents, err := embedded.ReadFile(path)
	if err != nil {
		fmt.Println(err)
		return
	}
	w.Write(contents)
}