<?php
/**
 * @copyright	Copyright (c) 2016 AmyTheme (http://www.amytheme.com). All rights reserved.
 * @license		http://www.gnu.org/licenses/gpl-3.0.html GNU/GPL
 */

defined( 'ABSPATH' ) or die;

/**
 * Custom wp_title for seo plugins integration.
 */
if ( ! function_exists( 'amy_xmas_filter_wp_title' ) ) {
	function amy_xmas_filter_wp_title( $title, $sep ) {
		if ( is_feed() ) {
			return $title;
		}

		global $page, $paged;

		// add blog name
		$title	.= get_bloginfo( 'name', 'display' );

		// add page number if necessary
		if ( ($paged >= 2 || $page >= 2) && ! is_404() ) {
			$title	.= ' ' . $sep . ' ' . sprintf( esc_html__( 'Page %s', 'amy-xmas' ), max( $paged, $page ) );
		}

		return $title;
	}

	add_filter( 'wp_title', 'amy_xmas_filter_wp_title' );
}

/**
 * Add class to menu link.
 */
if ( ! defined( 'AMY_VERSION' ) ) {
	if ( ! function_exists( 'amy_xmas_filter_nav_menu_link_attributes' ) ) {
		function amy_xmas_filter_nav_menu_link_attributes( $atts, $item, $args ) {
			if ( $args->theme_location == 'primary' ) {
				$atts['class']	= isset( $atts['class'] ) ? $atts['class'] . ' amy-link' : 'amy-link';
			}

			return $atts;
		}

		add_filter( 'nav_menu_link_attributes', 'amy_xmas_filter_nav_menu_link_attributes', 10, 3 );
	}

	if ( ! function_exists( 'amy_xmas_filter_wp_nav_menu_args' ) ) {
		function amy_xmas_filter_wp_nav_menu_args( $args ) {
			$location	= $args['theme_location'];

			if ( ($location == 'primary' && ! isset( $args['mobile'] )) ) {
				$args['container']	= false;
			}

			return $args;
		}

		add_filter( 'wp_nav_menu_args', 'amy_xmas_filter_wp_nav_menu_args', 99 );
	}
}

/**
 * Post format filters in the_content
 */
if ( ! function_exists( 'amy_xmas_filter_the_content' ) ) {
	function amy_xmas_filter_the_content( $content ) {
		$post_format	= get_post_format();

		if ( $post_format ) {
			$content	= apply_filters( 'amy_xmas_post_format_' . $post_format, $content );
		}

		return $content;
	}

	add_filter( 'the_content', 'amy_xmas_filter_the_content', 2 );
}

/**
 * Blog auto excerpt read more.
 */
if ( ! function_exists( 'amy_xmas_filter_auto_excerpt_read_more_link' ) ) {
	function amy_xmas_filter_auto_excerpt_read_more_link( $content ) {
		if ( amy_get_option( 'blog_auto_excerpt' ) === true && get_post_type() == 'post' && ! is_feed() && ! is_single() && ! is_search() ) {
			$content	= amy_xmas_create_post_excerpt( $content );
		}

		return $content;
	}

	add_filter( 'the_content', 'amy_xmas_filter_auto_excerpt_read_more_link', 7 );
}

/**
 * Post format video/audio
 */
if ( ! function_exists( 'amy_xmas_filter_post_format_media' ) ) {
	function amy_xmas_filter_post_format_media( $content ) {
		$media	= amy_xmas_get_first_url( $content );

		if ( ! empty( $media ) ) {
			$content	= str_replace( $media, '', $content );
		} else {
			$pattern	= amy_xmas_get_shortcode_regex( amy_xmas_get_tagregex() );

			preg_match( '/' . $pattern . '/', $content, $media );

			if ( ! empty( $media[2] ) ) {
				$content	= str_replace( $media[0], '', $content );
			}
		}

		return $content;
	}

	add_filter( 'amy_xmas_post_format_video', 'amy_xmas_filter_post_format_media' );
	add_filter( 'amy_xmas_post_format_audio', 'amy_xmas_filter_post_format_media' );
}

/**
 * Post format link.
 */
if ( ! function_exists( 'amy_xmas_filter_post_format_link' ) ) {
	function amy_xmas_filter_post_format_link( $content ) {
		$parse	= amy_xmas_post_format_link_helper( $content );

		return $parse['content'];
	}

	add_filter( 'amy_xmas_post_format_link', 'amy_xmas_filter_post_format_link' );
}

/**
 * comment_form_fields filter. Move comment field to bottom.
 */
if ( ! function_exists( 'amy_xmas_filter_comment_form_fields' ) ) {
	function amy_xmas_filter_comment_form_fields( $fields ) {
		$comment_field	= $fields['comment'];

		unset( $fields['comment'] );

		$fields['comment']	= $comment_field;

		return $fields;
	}

	add_filter( 'comment_form_fields', 'amy_xmas_filter_comment_form_fields' );
}