package matrix

import (
	"encoding/json"
	"net/http"
	"os"
)

type matrixWellKnown struct {
	WellKnownAddress string `json:"m.server"`
}

func Matrix(w http.ResponseWriter, req *http.Request) {
	// uses an environment variable for now
	wellKnownAddr, ok := os.LookupEnv("MATRIX_WELL_KNOWN_ADDRESS")
	if !ok {
		w.WriteHeader(http.StatusNotFound)
		return
	}

	w.Header().Set("Content-Type", "application/json")
	w.WriteHeader(http.StatusOK)
	wellKnown := &matrixWellKnown{
		WellKnownAddress: wellKnownAddr,
	}
	json.NewEncoder(w).Encode(wellKnown)
}