// src/model_base.js
'use strict'

import _ from '../lodash-mixins'

const utils = {}

/**
 * Retrieve the file name of the model importing/requiring this file
 *
 * @return {string} Full path and filename of parent file - EG: /path/File-Name.js
 */
utils.getParentFilename = () => {
    try {
        var err = new Error()
        var callerfile
        var currentfile

        Error.prepareStackTrace =  (err, stack) => stack

        currentfile = err.stack.shift().getFileName()

        while (err.stack.length) {
            callerfile = err.stack.shift().getFileName()

            if(currentfile !== callerfile)
                return callerfile
        }
    } catch (err) {}

    return undefined
}

/**
 * Return a model name based off of the filename/path returned from getParentFilename().
 * Basically just a regex match for the filename, without the extension, and converted
 * to snakeCase
 *
 * @return {string} Parent file name converted to string - EG: /path/File-Name.js -> file_name
 */
utils.getModelName = () => {
    const parentFile = utils.getParentFilename()

    if( ! parentFile)
        throw new Error('Failed to get the filename of the model calling the base model')

    return _.snakeCase( parentFile.match(/\/([a-zA-Z0-9]+)\.js/)[1] )
}

module.exports = utils