package controllers

import (
	"bytes"
	"io"
	"log"
	"net/http"
)

const (
	maxStyleSize = 5 * 1024 * 1024
	styleName    = "style"
)

func extractStyle(req *http.Request) ([]byte, error) {

	f, _, err := req.FormFile(styleName)
	if err != nil {
		return nil, err
	}
	defer f.Close()

	var buf bytes.Buffer

	if _, err := io.Copy(&buf, io.LimitReader(f, maxStyleSize)); err != nil {
		return nil, err
	}
	return buf.Bytes(), nil
}

func uploadStyle(rw http.ResponseWriter, req *http.Request) {

	data, err := extractStyle(req)
	if err != nil {
		log.Printf("error: %v\n", err)
		http.Error(rw, "error: "+err.Error(), http.StatusBadRequest)
		return
	}

	log.Printf("uploaded file length: %d\n", len(data))
	// TODO: Implement me!
}