<?php

function sm_validate_options($input) {
	
	// ESC ATTR - Encoded Single / Double / Less Than / Greater Than Quotes.
	$escape_attrs = array( 'body_font_family' );
	foreach ( $escape_attrs as $escape_attr ) {
		$input[$escape_attr] = trim( $input[$escape_attr] );
		$input[$escape_attr] = esc_attr( $input[$escape_attr] );
	};
	
	// WP Kses - Keeps only allowed HTML Tags mentioned in $allowedtags array.
	$htmls = array( 'slider_caption_one', 'slider_caption_two', 'slider_caption_three', 'slider_caption_four', 'slider_caption_five', 'slider_caption_six', 'slider_caption_seven', 'slider_caption_eight', 'slider_caption_nine', 'slider_caption_ten' );
	foreach ( $htmls as $html ) {
		global $allowedtags;
		$input[$html] = trim( $input[$html] );
		$input[$html] = wp_kses( $input[$html], $allowedtags );
	};
	
	// No HTML - accept the input only after stripping out all html, extra white space etc!
	$no_htmls = array(  );
	foreach ( $no_htmls as $no_html ) {
    $input[$no_html] = sanitize_text_field( $input[$no_html] ); 
	// need to add slashes still before sending to the database  
    $input[$no_html] = addslashes( $input[$no_html] );
	};
	
	// Integar Input
	$integars = array( 'body_font_size','headings_h1_size','headings_h2_size','headings_h3_size','headings_h4_size','headings_h5_size','headings_h6_size' );
	foreach ( $integars as $integar ) {
		$input[$integar] = trim( $input[$integar] );
		$input[$integar] = absint( $input[$integar] );
	};
	
	// Color Input
	$colors = array( 'body_font_color', 'anchor_color', 'anchor_hover_color', 'anchor_visited_color', 'headings_font_color' );
	foreach ( $colors as $color ) {
		trim( $input[$color] );
		if ( preg_match('/^#([0-9a-fA-F]{3}){1,2}$/', $input[$color]) ) {
			$input[$color] = $input[$color];
		} else {
			$input[$color] = '#';
		}
	};
			
	// URL Input
	$urls = array( 'slider_anchor_one', 'slider_anchor_two', 'slider_anchor_three',  'slider_anchor_four', 'slider_anchor_five', 'slider_anchor_six', 'slider_anchor_seven', 'slider_anchor_eight', 'slider_anchor_nine', 'slider_anchor_ten' );
	foreach ( $urls as $url ) { 
		$input[$url] = trim( $input[$url] );
		$input[$url] = esc_url_raw( $input[$url] );
	};
	
	// Email Checking
	$emails = array(  );
	foreach ( $emails as $email ) { 
		$input[$email] = trim( $input[$email] );
		$input[$email] = is_email( $input[$email] );
	};
	
	// CheckBox & Radio
	$checkboxs = array( 'slider_anchor', 'slider_caption' );
	foreach ( $checkboxs as $checkbox ) {
		if ( $input[$checkbox] ) { 
			$input[$checkbox] = '1'; 
		} else { 
			$input[$checkbox] = '0'; 
		};
	};
	
	// Image Upload
	$keys = array_keys($_FILES);
	$i = 0;
	foreach ( $_FILES as $image ) :
		// if a files was upload
		if ( $image['size'] ) {
			// if it is an image
			if ( preg_match('/(jpg|jpeg|png|gif|ico)$/', $image['type']) ) {
				$overrides = array('test_form' => false);
				// save the file, and store an array, containing its location in $file
				$file = wp_handle_upload( $image, $overrides );
				$input[$keys[$i]] = $file;
			} else {
				// Not an image.
				$options = get_option( 'plugin_options' );
				$input[$keys[$i]] = $options[$keys[$i]];
				// Die and let the user know that they made a mistake.
				wp_die( 'No image was uploaded.' );
			}
		}
		// Else, the user didn't upload a file.
		// Retain the image that's already on file.
		else {
			$options = get_option( 'plugin_options' );
			$input[$keys[$i]] = $options[$keys[$i]];
		}
	$i++;
	endforeach;
	
	return $input; // return validated input
}
?>