<?php

namespace AcceptMyCookies\Controller;

if (! defined('ABSPATH')) {
    exit; // Exit if accessed directly
}

class InputValidator
{
    public static function validate($type, $value, $options = array())
    {
        switch ($type) {
            case 'text':
                return self::isText($value);
            case 'url':
                return self::isUrl($value);
            case 'number':
                return self::isNumber($value);
            case 'unit_interval':
                return self::isUnitInterval($value);
            case 'boolean':
                return self::isBoolean($value);
            case 'options':
                return self::isOptions($value, $options);
            case 'color':
                return self::isColor($value);
            case 'ga_id':
                return self::isGaId($value);
            case 'cl_id':
                return self::isClId($value);
            case 'html':
                return self::isHtml($value);
            default:
                return true;
        }
    }

    private static function isText($value)
    {
        return sanitize_text_field($value);
    }

    private static function isUrl($value)
    {
        if (wp_http_validate_url($value)) {
            return $value;
        } else {
            return false;
        }
    }

    private static function isNumber($value)
    {
        if (preg_match('/^[\d\.\,]+$/', $value)) {
            return $value;
        } else {
            return false;
        }
    }

    private static function isUnitInterval($value)
    {
        // check if the value is between 0 to 1
        if (preg_match('/^(0(\.\d+)?|1(\.0*)?)$/', $value)) {
            return $value;
        } else {
            return false;
        }
    }

    private static function isBoolean($value)
    {
        if (preg_match('/^(0|1)$/', $value)) {
            return $value;
        } else {
            return false;
        }
    }

    private static function isOptions($value, $options)
    {
        if (in_array($value, $options)) {
            return $value;
        } else {
            return false;
        }
    }

    private static function isColor($value)
    {
        // Check if value matches hex color format (# followed by 3 or 6 hex digits)
        if (preg_match('/^#[0-9A-Fa-f]{3,6}$/', $value) || ! $value) {
            return $value;
        } else {
            return false;
        }
    }

    private static function isGaId($value)
    {
        // Google Analytics ID format: UA-XXXXX-Y
        if (preg_match('/(G-\w{10}|UA-\d{4,9}-\d{1,3})/', $value) || ! $value) {
            return $value;
        } else {
            return false;
        }
    }

    private static function isClId($value)
    {
        // Clarity Property ID format: 10 letters and numbers
        if (preg_match('/\w{10}/', $value) || ! $value) {
            return $value;
        } else {
            return false;
        }
    }

    private static function isHtml($value)
    {
        // Basic HTML validation using DOM parser
        if (preg_match('/<[^>]+>/', $value) || ! $value) {
            return $value;
        } else {
            return false;
        }
    }
}