<?php

if(!defined('ABSPATH')){
    exit;
}

if(!class_exists('acfe_field_taxonomy')):

class acfe_field_taxonomy extends acfe_field_extend{
    
    /**
     * initialize
     */
    function initialize(){
        
        $this->name = 'taxonomy';
        $this->replace = array(
            'load_value',
            'update_value',
        );
        
    }
    
    
    /**
     * load_value
     *
     * @param $value
     * @param $post_id
     * @param $field
     *
     * @return mixed
     */
    function load_value($value, $post_id, $field){
        
        // disable load terms for local meta & acfe_form
        if(acfe_is_local_post_id($post_id) || acfe_starts_with($post_id, 'acfe_form')){
            $field['load_terms'] = false;
        }
        
        // return
        return $this->instance->load_value($value, $post_id, $field);
        
    }
    
    
    /**
     * update_value
     *
     * @param $value
     * @param $post_id
     * @param $field
     *
     * @return array|mixed
     */
    function update_value($value, $post_id, $field){
        
        // disable save terms for local meta & acfe_form
        if(acfe_is_local_post_id($post_id) || acfe_starts_with($post_id, 'acfe_form')){
            $field['save_terms'] = false;
        }
        
        // return
        return $this->instance->update_value($value, $post_id, $field);
        
    }
    
    
    /**
     * format_front_value
     *
     * @param $formatted
     * @param $unformatted
     * @param $post_id
     * @param $field
     * @param $form
     *
     * @return string
     */
    function format_front_value($formatted, $unformatted, $post_id, $field, $form){
        
        // vars
        $value = acf_get_array($unformatted);
        $array = array();
        
        // loop values
        foreach($value as $term_id){
            
            // get term
            $term = get_term($term_id);
            
            // validate
            if($term && !is_wp_error($term)){
                $array[] = $term->name;
            }
            
        }
        
        // merge
        return implode(', ', $array);
        
    }
    
    
    /**
     * validate_front_value
     *
     * @param $valid
     * @param $value
     * @param $field
     * @param $input
     * @param $form
     *
     * @return false
     */
    function validate_front_value($valid, $value, $field, $input, $form){
        
        // bail early
        if(!$this->pre_validate_front_value($valid, $value, $field, $form)){
            return $valid;
        }
        
        // cast array
        $value = acf_get_array($value);
        
        // loop values
        foreach($value as $v){
            
            // get post
            $term = get_term($v);
            
            // check term exists
            if(!$term || is_wp_error($term)){
                return false;
            }
            
            // check if term is part of $field['taxonomy']
            if(!in_array($term->taxonomy, (array) $field['taxonomy'], true)){
                return false;
            }
            
        }
        
        // return
        return $valid;
        
    }
    
}

acf_new_instance('acfe_field_taxonomy');

endif;