package utils

import (
	"bytes"
	"encoding/json"
	"io"
	"os"
)

func ToJSON(v any) string {
	if v == nil {
		return ""
	}

	res, err := json.Marshal(v)
	if err != nil {
		return ""
	}

	return string(res)
}

func MapToStruct(data map[string]interface{}, v any) error {
	s, err := json.Marshal(data)
	if err != nil {
		return err
	}

	if err := json.Unmarshal(s, v); err != nil {
		return err
	}

	return nil
}

func InterfaceToStruct(data interface{}, v any) error {
	s, err := json.Marshal(data)
	if err != nil {
		return err
	}

	if err := json.Unmarshal(s, v); err != nil {
		return err
	}

	return nil
}

func JSONLoadFromFile(filePath string, data interface{}) error {
	file, err := os.Open(filePath)
	if err != nil {
		return err
	}
	defer file.Close()

	buffCache := new(bytes.Buffer)

	if _, err := buffCache.ReadFrom(file); err != nil && err != io.EOF {
		return err
	}

	if err := json.Unmarshal(buffCache.Bytes(), data); err != nil {
		return err
	}

	return nil
}