package grabhttp

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

type errorStruct struct {
	Status string `json:"status"`
	Error  string `json:"error"`
}

func StaticHandler(f fs.FS) http.Handler {
	return http.FileServer(http.FS(f))
}

func WriteJSON(i interface{}, status int, w http.ResponseWriter, r *http.Request) {
	b, err := json.Marshal(i)
	if err != nil {
		ErrorJSON(err, http.StatusInternalServerError, w, r)
		return
	}
	w.Header().Set("Content-Type", "application/json")
	w.WriteHeader(status)
	w.Write(b)
	w.Write([]byte("\n"))
}

func WriteHTML(b []byte, status int, w http.ResponseWriter, r *http.Request) {
	w.Header().Set("Content-Type", "text/html")
	w.WriteHeader(status)
	w.Write(b)
	w.Write([]byte("\n"))
}

func ErrorJSON(err error, status int, w http.ResponseWriter, r *http.Request) {
	WriteJSON(errorStruct{
		Status: "error",
		Error:  err.Error(),
	}, status, w, r)
}