<?php
/**
 * functions/input.php
 *
 * This class manages and returns GET, FILE, and POST variables.
 *
 * @version 1.1.2
 * @author  Joey Kimsey <Joey@thetempusproject.com>
 * @link    https://TheTempusProject.com/libraries/Bedrock
 * @license https://opensource.org/licenses/MIT [MIT LICENSE]
 */
namespace TheTempusProject\Bedrock\Functions;

use TheTempusProject\Canary\Bin\Canary as Debug;

class Input {
    /**
     * Checks to see if input exists in the order of POST, GET, FILE.
     * A default name value of "submit" is used if none is specified.
     *
     * @param {string} [$data] - Name of the desired input (default: 'submit')
     * @return {bool}
     */
    public static function exists( $data = 'submit' ) {
        if ( self::post( $data ) ) {
            return true;
        } elseif ( self::get( $data ) ) {
            return true;
        } elseif ( self::file( $data ) ) {
            return true;
        } else {
            Debug::log( 'Input::exists: No input Found: '. $data );
            return false;
        }
    }

    /**
     * Checks for a files existence and that it is not null
     * then returns its value or bool false if none is found
     *
     * @param {string} [$data] - Name of desired $_FILES value.
     * @return {bool|string} - Returns false if not found and a string if found.
     */
    public static function file( $data ) {
        if ( !isset( $_FILES[$data] ) ) {
            Debug::log( "Input - file : $data not found." );
            return false;
        }
        if ( $_FILES[$data]['tmp_name'] == '' ) {
            Debug::log( "Input - file : $data empty." );
            return false;
        }
        return $_FILES[$data];
    }

    /**
     * Checks for a post variable named $data and returns
     * its value if true or bool false if none is found.
     *
     * @param {string} [$data] - Name of desired $_POST value.
     * @return {bool|string} - Returns false if not found and a string if found.
     */
    public static function post( $data ) {
        if ( !isset( $_POST[$data] ) ) {
            Debug::debug( "Input - post : $data not found." );
            return false;
        }
        if ( empty( $_POST[$data] ) ) {
            Debug::debug( "Input - post : $data empty." );
            return false;
        }
        return $_POST[$data];
    }

    /**
     * Checks for a post variable named $data and returns
     * its value if found or null if not found.
     *
     * @param {string} [$data] - Name of desired $_POST value.
     * @return {string}
     */
    public static function postNull( $data ) {
        if ( !isset( $_POST[$data] ) ) {
            Debug::debug( "Input - post : $data not found." );
            return;
        }
        if ( empty( $_POST[$data] ) ) {
            Debug::debug( "Input - post : $data empty." );
            return;
        }
        return $_POST[$data];
    }

    /**
     * Checks for a get variable named $data.
     *
     * @param {string} [$data] - Name of desired $_GET value.
     * @return {bool|string} - Returns false if not found and a string if found.
     */
    public static function get( $data ) {
        if ( !isset( $_GET[$data] ) ) {
            Debug::debug( "Input - get : $data not found." );
            return false;
        }
        if ( empty( $_GET[$data] ) ) {
            Debug::debug( "Input - get : $data empty." );
            return false;
        }
        return $_GET[$data];
    }
}