/*
 * ECAL
 *
 * Copyright 2020 Matthias Ladkau. All rights reserved.
 *
 * This Source Code Form is subject to the terms of the MIT
 * License, If a copy of the MIT License was not distributed with this
 * file, You can obtain one at https://opensource.org/licenses/MIT.
 */

package stdlib

import (
	"fmt"
	"strings"

	"devt.de/krotik/ecal/util"
)

/*
GetStdlibConst looks up a constant from stdlib.
*/
func GetStdlibConst(name string) (interface{}, bool) {
	m, n := splitModuleAndName(name)

	if n != "" {
		if cmap, ok := genStdlib[fmt.Sprintf("%v-const", m)]; ok {
			if cv, ok := cmap.(map[interface{}]interface{})[n]; ok {
				return cv.(interface{}), true
			}
		}
	}

	return nil, false
}

/*
GetStdlibFunc looks up a function from stdlib.
*/
func GetStdlibFunc(name string) (util.ECALFunction, bool) {
	m, n := splitModuleAndName(name)

	if n != "" {
		if fmap, ok := genStdlib[fmt.Sprintf("%v-func", m)]; ok {
			if fn, ok := fmap.(map[interface{}]interface{})[n]; ok {
				return fn.(util.ECALFunction), true
			}
		}
	}

	return nil, false
}

func splitModuleAndName(name string) (string, string) {
	ccSplit := strings.SplitN(name, ".", 2)

	if len(ccSplit) == 0 {
		return "", ""
	}
	return ccSplit[0], strings.Join(ccSplit[1:], "")
}