<?php

namespace WPDeveloper\BetterDocs\Admin\Builder;

/**
 * Rule
 *
 * @package NotificationX\Core
 */

class Rules {

    public static function isOfType( $key, $value = false, $_not = false, $field = null ) {
        $rule = self::_isOfType( $key, $value, $_not );
        return $field ? self::add( $rule, $field ) : $rule;
    }

    public static function _isOfType( $key, $value = false, $_not = false ) {
        return $_not ? new Rule( '!isOfType', $key, $value ) : new Rule( 'isOfType', $key, $value );
    }

    public static function is( $key, $value = false, $_not = false, $field = null ) {
        $rule = self::_is( $key, $value, $_not );
        return $field ? self::add( $rule, $field ) : $rule;
    }

    public static function includes( $key, $value = false, $_not = false, $field = null ) {
        if ( ! is_array( $value ) ) {
            $value = [$value];
        }
        $rule = self::_includes( $key, $value, $_not );
        return $field ? self::add( $rule, $field ) : $rule;
    }

    public static function _is( $key, $value = false, $_not = false ) {
        return $_not ? new Rule( '!is', $key, $value ) : new Rule( 'is', $key, $value );
    }

    public static function _includes( $key, $value = false, $_not = false ) {
        return $_not ? new Rule( '!includes', $key, $value ) : new Rule( 'includes', $key, $value );
    }

    public static function logicalRule( $rules, $operator = 'and', $field = null ) {
        if ( ! empty( $field ) ) {
            foreach ( $rules as $key => $rule ) {
                $field = self::add( $rule, $field, $operator );
            }
            return $field;
        }
        return self::_logicalRule( $rules, $operator );
    }

    public static function _logicalRule( $rules, $operator = 'and' ) {
        // if operator already exist then then append the rest rules in it.
        if ( ! empty( $rules[0] ) && is_array( $rules[0] ) && ! empty( $rules[0][0] ) && $rules[0][0] == $operator ) {
            $first = $rules[0];
            unset( $rules[0] );
            return array_merge( $first, $rules );
        }
        return array_merge( [$operator], $rules );
    }

    public static function add( $rule, $field, $operator = 'and' ) {
        if ( empty( $field['rules'] ) ) {
            $field['rules'] = $rule;
        } else {
            if ( ! self::add_rule( $rule, $field['rules'] ) ) {
                $field['rules'] = self::_logicalRule( [$field['rules'], $rule], $operator );
            }
        }
        return $field;
    }

    // Function to recursively search for a given value
    public static function add_rule( $search_value, $array ) {

        if ( is_array( $array ) && count( $array ) > 0 ) {
            foreach ( $array as $key => $value ) {
                if ( is_array( $value ) && count( $value ) > 0 ) {
                    $return = self::add_rule( $search_value, $value );
                    if ( $return ) {
                        return true;
                    }
                } else if ( is_a( $value, 'NotificationX\Core\Rule' ) && $value->can_add( $search_value ) ) {
                    $value->add_value( $search_value );
                    return true;
                }
            }
        } elseif ( is_a( $array, 'NotificationX\Core\Rule' ) && $array->can_add( $search_value ) ) {
            $array->add_value( $search_value );
            return true;
        }

        return false;
    }
}