// Copyright (c) 2025 Probo Inc <hello@getprobo.com>.
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
// OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
// PERFORMANCE OF THIS SOFTWARE.

package auth

import (
	"fmt"
	"net/http"

	authsvc "github.com/getprobo/probo/pkg/auth"
)

// SAMLMetadataHandler returns an HTTP handler that serves the SAML Service Provider metadata XML
// Uses global SP certificate configured at service startup
func SAMLMetadataHandler(samlSvc *authsvc.SAMLService) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		metadataXML, err := samlSvc.GenerateMetadata()
		if err != nil {
			http.Error(w, fmt.Sprintf("cannot generate metadata: %v", err), http.StatusInternalServerError)
			return
		}

		w.Header().Set("Content-Type", "application/samlmetadata+xml")
		w.WriteHeader(http.StatusOK)
		w.Write(metadataXML)
	}
}