<?php
/*
	WARNING! DO NOT EDIT THIS FILE!
	This file is part of the core Bizznis parent theme. 
	Please do all modifications in the form of a child theme.
*/

/**
 * Return option from the options table and cache result.
 *
 * @since 1.0.0
 */
function bizznis_get_option( $key, $setting = null, $use_cache = true ) {	
	# The default is set here, so it doesn't have to be repeated in the function arguments for bizznis_option() too.
	$setting = $setting ? $setting : BIZZNIS_SETTINGS_FIELD;
	
	# Allow child theme to short-circuit this function
	$pre = apply_filters( "bizznis_pre_get_option_{$key}", null, $setting );
	if ( null !== $pre ) {
		return $pre;
	}
	
	# Bypass cache if viewing site in customizer
	if ( bizznis_is_customizer() ) {
		$use_cache = false;
	}
	
	# If we need to bypass the cache
	if ( ! $use_cache ) {
		$options = get_option( $setting );
		if ( ! is_array( $options ) || ! array_key_exists( $key, $options ) ) {
			return '';
		}
		return is_array( $options[$key] ) ? stripslashes_deep( $options[$key] ) : stripslashes( wp_kses_decode_entities( $options[$key] ) );
	}
	
	# Setup caches
	static $settings_cache = array();
	static $options_cache  = array();
	
	# Check options cache
	if ( isset( $options_cache[$setting][$key] ) ) {
		# Option has been cached
		return $options_cache[$setting][$key];
	}
	
	# Check settings cache
	if ( isset( $settings_cache[$setting] ) ) {
		# Setting has been cached
		$options = apply_filters( 'bizznis_options', $settings_cache[$setting], $setting );
	}
	else {
		# Set value and cache setting
		$options = $settings_cache[$setting] = apply_filters( 'bizznis_options', get_option( $setting ), $setting );
	}
	
	# Check for non-existent option
	if ( ! is_array( $options ) || ! array_key_exists( $key, (array) $options ) ) {
		# Cache non-existent option
		$options_cache[$setting][$key] = '';
	}
	else {
		# Option has not been previously been cached, so cache now
		$options_cache[$setting][$key] = is_array( $options[$key] ) ? stripslashes_deep( $options[$key] ) : stripslashes( wp_kses_decode_entities( $options[$key] ) );
	}
	
	return $options_cache[$setting][$key];
}

/**
 * Echo options from the options database.
 *
 * @since 1.0.0
 */
function bizznis_option( $key, $setting = null, $use_cache = true ) {
	echo bizznis_get_option( $key, $setting, $use_cache );
}

/**
 * Echo data from a post or page custom field.
 *
 * @since 1.0.0
 */
function bizznis_custom_field( $field, $output_pattern = '%s' ) {
	printf( $output_pattern, bizznis_get_custom_field( $field ) );
}

/**
 * Return custom field post meta data.
 *
 * Return only the first value of custom field. Return empty string if field is blank or not set.
 *
 * @since 1.0.0
 *
 * @param string $field Custom field key.
 * @param int $post_id Optional. Post ID to use for Post Meta lookup, defaults to get_the_ID()
 * @return string|boolean Return value or empty string on failure.
 */
function bizznis_get_custom_field( $field ) {
	
	//* Use get_the_ID() if no $post_id is specified
	$post_id = empty( $post_id ) ? get_the_ID() : $post_id;

	if ( ! $post_id ) {
		return '';
	}
	
	$custom_field = get_post_meta( ( is_admin() ? get_the_ID() : get_queried_object_id() ), $field, true );
	
	if ( ! $custom_field ) {
		return '';
	}
	
	//* Return custom field, slashes stripped, sanitized if string
	return is_array( $custom_field ) ? stripslashes_deep( $custom_field ) : stripslashes( wp_kses_decode_entities( $custom_field ) );
}

/**
 * Save post meta / custom field data for a post or page.
 *
 * It verifies the nonce, then checks we're not doing autosave, ajax or a future post request. It then checks the
 * current user's permissions, before finally* either updating the post meta, or deleting the field if the value was not
 * truthy.
 *
 * By passing an array of fields => values from the same metabox (and therefore same nonce) into the $data argument,
 * repeated checks against the nonce, request and permissions are avoided.
 *
 * @since 1.0.0
 */
function bizznis_save_custom_fields( array $data, $nonce_action, $nonce_name, $post, $post_id ) {
	if ( ! empty( $deprecated ) ) {
		_deprecated_argument( __FUNCTION__, '1.1.0' );
	}
	
	# Verify the nonce
	if ( ! isset( $_POST[ $nonce_name ] ) || ! wp_verify_nonce( $_POST[ $nonce_name ], $nonce_action ) ) {
		return;
	}
	
	# Don't try to save the data under autosave, ajax, or future post.
	if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) {
		return;
	}
	if ( defined( 'DOING_AJAX' ) && DOING_AJAX ) {
		return;
	}
	if ( defined( 'DOING_CRON' ) && DOING_CRON ) {
		return;
	}
	
	# Grab the post object
	if ( ! is_null( $deprecated ) ) {
		$post = get_post( $deprecated );
	} else {
		$post = get_post( $post );
	}
	
	# Don't save if WP is creating a revision (same as DOING_AUTOSAVE?)
	if ( 'revision' == get_post_type( $post ) ) {
		return;
	}
	
	# Check that the user is allowed to edit the post
	if ( ! current_user_can( 'edit_post', $post->ID ) ) {
		return;
	}
	# Cycle through $data, insert value or delete field
	foreach ( (array) $data as $field => $value ) {
		# Save $value, or delete if the $value is empty
		if ( $value ) {
			update_post_meta( $post_id, $field, $value );
		}
		else {
			delete_post_meta( $post_id, $field );
		}
	}
}

/**
 * Takes an array of new settings, merges them with the old settings, and pushes them into the database.
 *
 * @since 1.1.0
 *
 * @uses BIZZNIS_SETTINGS_FIELD
 *
 * @param string|array $new     New settings. Can be a string, or an array.
 * @param string       $setting Optional. Settings field name. Default is BIZZNIS_SETTINGS_FIELD.
 */
function bizznis_update_settings( $new = '', $setting = BIZZNIS_SETTINGS_FIELD ) {	
	$old = get_option( $setting );
	$settings = wp_parse_args( $new, $old );

	//* Allow settings to be deleted
	foreach ( $settings as $key => $value ) {
		if ( 'unset' == $value ) {
			unset( $settings[ $key ] );
		}
	}

	return update_option( $setting, $settings );
}