package admin

import (
	"embed"
	"encoding/json"
	"io/fs"
	"net/http"
)

//go:embed static
var staticFS embed.FS

// NewHandler returns the admin dashboard HTTP handler.
func NewHandler(apiBaseURL string) http.Handler {
	sub, err := fs.Sub(staticFS, "static")
	if err != nil {
		panic("admin static fs: " + err.Error())
	}

	mux := http.NewServeMux()
	mux.HandleFunc("GET /config.json", func(w http.ResponseWriter, _ *http.Request) {
		w.Header().Set("Content-Type", "application/json")
		_ = json.NewEncoder(w).Encode(map[string]string{"api_base": apiBaseURL})
	})
	mux.Handle("/", http.FileServer(http.FS(sub)))
	return mux
}