<?php

if(!class_exists('acfe_settings')):

class acfe_settings{

    public $settings = array();
    
    /*
     * Construct
     */
    function __construct(){
        
        $this->settings = get_option('acfe', array());

    }
    
    function get($selector = null, $default = null){
     
        return $this->array_get($this->settings, $selector, $default);
        
    }
    
    function set($selector = null, $value = null, $append = false){
        
        if($value === null)
            return false;
        
        if($append){
            
            $this->array_append($this->settings, $selector, $value);
            
        }else{
            
            $this->array_set($this->settings, $selector, $value);
            
        }
        
        $this->update();
        
        return $this;
        
    }
    
    function clear($selector = null){
        
        $this->array_clear($this->settings, $selector);
        $this->update();
        
        return $this;
        
    }
    
    function delete($selector = null){
        
        // Single
        if(strpos($selector, '.') === false){
            
            unset($this->settings[$selector]);
        
        // Array
        }else{
            
            $this->array_remove($this->settings, $selector);
            
        }
        
        $this->update();
        
        return $this;
        
    }
    
    function append($selector = null, $value = null){
        
        if($selector === null && $value === null)
            return false;
        
        // Allow simple append without selector
        if($value === null){
            
            $value = $selector;
            $selector = null;
            
        }
        
        return $this->set($selector, $value, true);
        
    }
    
    function array_get($array, $key, $default = null){
        
        if(empty($key))
            return $array;
        
        if(!is_array($key))
            $key = explode('.', $key);
        
        $count = count($key);
        $i=-1;
        
        foreach($key as $segment){
            
            $i++;
            
            if(!isset($array[$segment]))
                continue;
            
            if($i+1 === $count){
                
                return $array[$segment];
                
            }
            
            unset($key[$i]);
            
            return $this->array_get($array[$segment], $key, $default);
            
        }
        
        return $default;
        
    }
    
    function array_set(&$array, $key, $value){
        
        if(empty($key))
            return $array = $value;
        
        $keys = explode('.', $key);
        
        while(count($keys) > 1){
            
            $key = array_shift($keys);
            
            if(!isset($array[$key]) || !is_array($array[$key])){
                
                $array[$key] = array();
                
            }
            
            $array =& $array[$key];
            
        }
        
        $array[array_shift($keys)] = $value;
        
        return $array;
        
    }
    
    function array_append(&$array, $key, $value){
        
        $get = $this->array_get($array, $key);
        
        $old = acf_get_array($get);
        $value = acf_get_array($value);
        
        $value = array_merge($old, $value);
        
        $this->array_set($array, $key, $value);
        
        return $array;
        
    }
    
    function array_clear(&$array, $key){
        
        $get = $this->array_get($array, $key);
        
        if($get === null)
            return $array;
        
        $value = null;
        
        if(is_array($get))
            $value = array();
        
        $this->array_set($array, $key, $value);
        
        return $array;
        
    }
    
    function array_remove(&$array, $keys){
        
        $original =& $array;
        
        foreach((array)$keys as $key){
            
            $parts = explode('.', $key);
            
            while(count($parts) > 1){
                
                $part = array_shift($parts);
                
                if(isset($array[$part]) && is_array($array[$part])){
                    
                    $array =& $array[$part];
                    
                }
                
            }
            
            unset($array[array_shift($parts)]);
            
            // clean up after each pass
            $array =& $original;
            
        }
        
    }
    
    function update(){
        
        update_option('acfe', $this->settings, 'true');
        
    }

}

endif;

function acfe_get_settings($selector = null, $default = null){

    return acf_get_instance('acfe_settings')->get($selector, $default);

}

function acfe_update_settings($selector = null, $value = null){
    
    if($value === null){
        $value = $selector;
        $selector = null;
    }

    return acf_get_instance('acfe_settings')->set($selector, $value);

}

function acfe_delete_settings($selector = null){
    
    return acf_get_instance('acfe_settings')->delete($selector);
    
}