<?php
/**
 * Buttercream Theme Options
 *
 * @package Buttercream

 */

/**
 * Register the form setting for our buttercream_options array.
 *
 * This function is attached to the admin_init action hook.
 *
 * This call to register_setting() registers a validation callback, buttercream_theme_options_validate(),
 * which is used when the option is saved, to ensure that our option values are complete, properly
 * formatted, and safe.
 *
 * We also use this function to add our theme option if it doesn't already exist.
 *

 */
function buttercream_theme_options_init() {

	// If we have no options in the database, let's add them now.
	if ( false === buttercream_get_theme_options() )
		add_option( 'buttercream_theme_options', buttercream_get_default_theme_options() );

	register_setting(
		'buttercream_options',       // Options group, see settings_fields() call in buttercream_theme_options_render_page()
		'buttercream_theme_options', // Database option, see buttercream_get_theme_options()
		'buttercream_theme_options_validate' // The sanitization callback, see buttercream_theme_options_validate()
	);

	// Register our settings field group
	add_settings_section( 'general', '', '__return_false', 'theme_options' );

	/* Register our individual settings fields */

	add_settings_field( 'buttercream_theme_style', __( 'Theme Style', 'buttercream' ), 'buttercream_settings_field_theme_style', 'theme_options', 'general' );

	add_settings_field( 'buttercream_responsive', __( 'Responsive Layout', 'buttercream' ), 'buttercream_settings_field_responsive', 'theme_options', 'general' );

	add_settings_field( 'buttercream_custom_css', __( 'Custom CSS', 'buttercream' ), 'buttercream_settings_field_custom_css', 'theme_options', 'general' );

	add_settings_field(
		'buttercream_support', // Unique identifier for the field for this section
		__( 'Support Caroline Themes', 'buttercream' ), // Setting field label
		'buttercream_settings_field_support', // Function that renders the settings field
		'theme_options', // Menu slug, used to uniquely identify the page; see _s_theme_options_add_page()
		'general' // Settings section. Same as the first argument in the add_settings_section() above
	);

}
add_action( 'admin_init', 'buttercream_theme_options_init' );

/**
 * Change the capability required to save the 'buttercream_options' options group.
 *
 * @see buttercream_theme_options_init() First parameter to register_setting() is the name of the options group.
 * @see buttercream_theme_options_add_page() The edit_theme_options capability is used for viewing the page.
 *
 * @param string $capability The capability used for the page, which is manage_options by default.
 * @return string The capability to actually use.
 */
function buttercream_option_page_capability( $capability ) {
	return 'edit_theme_options';
}
add_filter( 'option_page_capability_buttercream_options', 'buttercream_option_page_capability' );

/**
 * Add our theme options page to the admin menu, including some help documentation.
 *
 * This function is attached to the admin_menu action hook.
 *

 */
function buttercream_theme_options_add_page() {
	global $buttercream_options_hook;
	$buttercream_options_hook = add_theme_page(
		__( 'Theme Options', 'buttercream' ),   // Name of page
		__( 'Theme Options', 'buttercream' ),   // Label in menu
		'edit_theme_options',                    // Capability required
		'theme_options',                         // Menu slug, used to uniquely identify the page
		'buttercream_theme_options_render_page' // Function that renders the options page
	);

	if ( ! $buttercream_options_hook )
		return;

	add_action('load-'.$buttercream_options_hook, 'buttercream_contextual_help', 10, 3);
}
add_action( 'admin_menu', 'buttercream_theme_options_add_page' );

/**
 * Returns an array of Theme Style options registered for Buttercream.
 *

 */
function buttercream_theme_style() {
	$buttercream_theme_style = array(
		'cupcake' => array(
			'value' => 'cupcake',
			'label' => __( 'Confetti', 'buttercream' )
		),
		'yellow' => array(
			'value' => 'yellow',
			'label' => __( 'Chocolate Orange', 'buttercream' )
		),
		'red' => array(
			'value' => 'red',
			'label' => __( 'Red Velvet', 'buttercream' )
		)
	);

	return apply_filters( 'buttercream_theme_style', $buttercream_theme_style );
}

/**
 * Returns the default options for Buttercream.
 *

 */
function buttercream_get_default_theme_options() {
	$default_theme_options = array(
		'theme_style' => 'cupcake',
		'custom_css' => '',
		'responsive' => 'off',
		'support' => 0
	);

	return apply_filters( 'buttercream_default_theme_options', $default_theme_options );
}

/**
 * Returns the options array for Buttercream.
 *

 */
function buttercream_get_theme_options() {
	return get_option( 'buttercream_theme_options', buttercream_get_default_theme_options() );
}

/**
 * Renders the Theme Style setting field.
 *

 */
function buttercream_settings_field_theme_style() {
	$options = buttercream_get_theme_options();

	foreach ( buttercream_theme_style() as $button ) {
	?>
	<div class="layout">
		<label class="description">
			<img src="<?php echo get_template_directory_uri() ?>/img/ss/<?php echo $button['value']; ?>.png" alt="<?php echo $button['label']; ?> Style" /><br />
			<input type="radio" name="buttercream_theme_options[theme_style]" value="<?php echo esc_attr( $button['value'] ); ?>" <?php checked( $options['theme_style'], $button['value'] ); ?> />
			<?php echo $button['label']; ?>
		</label>
	</div>
	<?php
	}
}

/**
 * Renders the Custom CSS setting field.
 *

 */
function buttercream_settings_field_custom_css() {
	$options = buttercream_get_theme_options();
	?>
	<textarea class="large-text" type="text" name="buttercream_theme_options[custom_css]" id="custom_css" cols="50" rows="10" /><?php echo esc_textarea( $options['custom_css'] ); ?></textarea>
	<label class="description" for="custom_css"><?php _e( 'Add any custom CSS rules here so they will persist through theme updates.', 'buttercream' ); ?></label>
	<?php
}

/**
 * Renders the Support setting field.
 */
function buttercream_settings_field_support() {
	$options = buttercream_get_theme_options();

	if ( $options['support'] !== 'on' || !isset( $options['support'] ) ) {

	?>
	<label for"buttercream-support">
		<a href="https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=6G3NYZ5EN28EY" target="_blank"><img src="https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif" alt="PayPal - The safer, easier way to pay online!" class="alignright"></a>
		<?php _e( 'If you enjoy my themes, please consider making a secure donation using the PayPal button to your right. Anything is appreciated!', 'buttercream' ); ?>

		<br /><input type="checkbox" name="buttercream_theme_options[support]" id="support" <?php checked( 'on', $options['support'] ); ?> />
		<label class="description" for="support">
			<?php _e( 'No, thank you! Dismiss this message.', 'buttercream' ); ?>
		</label>
	</label>
	<?php
	}
	else { ?>
		<label class="description" for="support">
			<?php _e( 'Hide Donate Button', 'buttercream' ); ?>
		</label>
		<input type="checkbox" name="buttercream_theme_options[support]" id="support" <?php checked( 'on', $options['support'] ); ?> />

	</td>

	<?php
	}

}

/**
 * Renders the Responsive layout option setting field.
 */
function buttercream_settings_field_responsive() {
	$options = buttercream_get_theme_options(); ?>
	<label for"buttercream-responsive">
		<input type="checkbox" name="buttercream_theme_options[responsive]" id="responsive" <?php checked( 'on', $options['responsive'] ); ?> />
		<label class="description" for="responsive">
			<?php _e( 'Enable responsive layout (design will shrink to fit smaller screen sizes)', 'buttercream' ); ?>
		</label>
	</label>
<?php }


/**
 * Returns the options array for Buttercream.
 *

 */
function buttercream_theme_options_render_page() {
	?>
	<div class="wrap">
		<?php screen_icon(); ?>
		<h2><?php printf( __( '%s Theme Options', 'buttercream' ), get_current_theme() ); ?></h2>
		<?php settings_errors(); ?>

		<form method="post" action="options.php">
			<?php
				settings_fields( 'buttercream_options' );
				do_settings_sections( 'theme_options' );
				submit_button();
			?>
		</form>
	</div>
	<?php
}

/**
 * Sanitize and validate form input. Accepts an array, return a sanitized array.
 *
 * @see buttercream_theme_options_init()
 * @todo set up Reset Options action
 *

 */
function buttercream_theme_options_validate( $input ) {
	$output = $defaults = buttercream_get_default_theme_options();

	// The sample Theme Styles value must be in our array of Theme Styles values
	if ( isset( $input['theme_style'] ) && array_key_exists( $input['theme_style'], buttercream_theme_style() ) )
		$output['theme_style'] = $input['theme_style'];

	// The Support field should either be on or off
	if ( ! isset( $input['support'] ) )
		$input['support'] = 'off';
	$output['support'] = ( $input['support'] == 'on' ? 'on' : 'off' );

	// The Responsive field should either be on or off
	if ( ! isset( $input['responsive'] ) )
		$input['responsive'] = 'off';
	$output['responsive'] = ( $input['responsive'] == 'on' ? 'on' : 'off' );

	// The Custom CSS must be safe text with the allowed tags for posts
	if ( isset( $input['custom_css'] ) )
		$output['custom_css'] = wp_filter_nohtml_kses($input['custom_css'] );

	return apply_filters( 'buttercream_theme_options_validate', $output, $input, $defaults );
}

/**
 * Theme Options Admin Styles
*/

function buttercream_theme_options_admin_styles() {
	echo "<style type='text/css'>";
	echo ".layout .description { width: 300px; float: left; text-align: center; margin-bottom: 10px; padding: 10px; }";
	echo "</style>";
}

add_action( 'admin_enqueue_scripts', 'buttercream_theme_options_admin_styles' );

/**
 * Add a contextual help menu to the Theme Options panel
 */
function buttercream_contextual_help() {

	global $buttercream_options_hook;

	$screen = get_current_screen();

	if ( $screen->id == $buttercream_options_hook ) {

		//Store Theme Options tab in variable
		$theme_options_content = '<p><a href="http://wordpress.org/tags/buttercream?forum_id=5" target="_blank">' . __( 'For basic support, please post in the WordPress forums.', 'buttercream' ) . '</a></p>';
		$theme_options_content .= '<p><strong>' . __( 'Theme Style', 'buttercream' ) . '</strong> - ' . __( 'This is where you can choose the overall look and feel of your blog. Defaults to Confetti.', 'buttercream' ) . '</p>';
		$theme_options_content .= '<p><strong>' . __( 'Responsive Layout', 'buttercream' ) . '</strong> - ' . __( 'If enabled, your blog will shrink to better fit smaller screen sizes and mobile devices. Turned off by default.', 'buttercream' ) . '</p>';
		$theme_options_content .= '<p><strong>' . __( 'Custom CSS', 'buttercream' ) . '</strong> - ' . __( 'You can override the theme\'s default CSS by putting your own code here.  It should be in the format:', 'buttercream' ) . '</p>';
		$theme_options_content .= '<blockquote><pre>.some-class { width: 100px; }</pre>';
		$theme_options_content .= '<pre>#some-id { background-color: #fff; }</pre></blockquote>';
		$theme_options_content .= '<p>' . __( 'Replacing any classes, ID\'s, etc. with the ones you want to override, and within them the attributes you want to change.', 'buttercream' ) . '</p>';
		$theme_options_content .= '<p><strong>' . __( 'Support Caroline Themes/Hide Donate Button', 'buttercream' ) . '</strong> - ' . __( 'If you like my themes and find them useful, please donate!  Checking the box will hide this information.', 'buttercream' ) . '</p>';
		$theme_options_content .= '<p><a href="http://www.carolinethemes.com" target="_blank">' . __( 'Visit Caroline Themes for more free WordPress themes!', 'buttercream' ) . '</a></p>';

		//Store Post Formats tab content in variable
		$post_formats_content = '<p>' . __( 'Buttercream is a sleek theme out of the box, but post formats make it shine. It works seamlessly with', 'buttercream' ) . ' <a href="https://github.com/crowdfavorite/wp-post-formats" target="_blank">' . __( 'Crowd Favorite\'s Post Formats Admin UI', 'buttercream' ) . '</a>.</p>';

		$post_formats_content .= '<p>' . __( 'If you don\'t have or want to use the plugin, you can also use the custom fields (keys and values) noted below.', 'buttercream' ) . '</p>';
		$post_formats_content .= '<p>' . __( 'If you don\'t use the custom fields, whatever you place in the post content area will be displayed instead, however it won\'t have any special formatting.', 'buttercream' ) . '</p>';
		$post_formats_content .= '<p>' . __( 'Here\'s how to make the most of your microblog with Buttercream:', 'buttercream' ) . '</p>';
		$post_formats_content .= '<h2>' . __( 'Audio', 'buttercream' ) . '</h2>';
		$post_formats_content .= '<p><strong>' . __( 'Key', 'buttercream' ) . '</strong> - _format_audio_embed<br />';
		$post_formats_content .= '<strong>' . __( 'Value', 'buttercream' ) . '</strong>' . __( ' - Embed code or OEmbed URL', 'buttercream' ) . '</p>';
		$post_formats_content .= '<p>' . __( 'Insert an OEmbed link or Embed code into the custom field. You may use WordPress\' native [audio] embed. When using the [audio] shortcode, this format works best:', 'buttercream' ) . '</p>';
		$post_formats_content .= '<pre>[audio http://myurl.com/audiofile.mp3|bgcolor=FFFFFF]</pre>';
		$post_formats_content .= '<p>' . __( 'Where http://myurl.com/audiofile.mp3 is the path to your (MP3) audio file and FFFFFF is a hex color value that most closely matches the background color of your chosen theme style.', 'buttercream' ) . ' <a href="http://en.support.wordpress.com/audio/" target="_blank">' . __( 'For more information on how to use WordPress audio embeds, follow the guide here.', 'buttercream' ) . '</a></p>';
		$post_formats_content .= '<h2>' . __( 'Video', 'buttercream' ) . '</h2>';
		$post_formats_content .= '<p><strong>' . __( 'Key', 'buttercream' ) . '</strong> - _format_video_embed<br />';
		$post_formats_content .= '<strong>' . __( 'Value', 'buttercream' ) . '</strong>' . __( ' - Embed code or OEmbed URL', 'buttercream' ) . '</p>';
		$post_formats_content .= '<p>' . __( 'Insert an OEmbed link or Embed code into the custom field.', 'buttercream' ) . ' <a href="http://codex.wordpress.org/Embeds" target="_blank">' . __( 'For more information on embedding video in WordPress, look here.', 'buttercream' ) . '</a></p>';
		$post_formats_content .= '<h2>' . __( 'Image', 'buttercream' ) . '</h2>';
		$post_formats_content .= '<p>' . __( 'Set a Featured Image, and if provided, the post title will become the image caption.', 'buttercream' ) . '</p>';
		$post_formats_content .= '<h2>' . __( 'Gallery', 'buttercream' ) . '</h2>';
		$post_formats_content .= '<p>' . __( 'Simply insert your WordPress gallery into the content area. Your blog index page will display the first three images in the gallery followed by the post title, which links to the full gallery.', 'buttercream' ) . '</p>';
		$post_formats_content .= '<h2>' . __( 'Chat', 'buttercream' ) . '</h2>';
		$post_formats_content .= '<p>' . __( 'Paste a chat transcript into the content area.', 'buttercream' ) . '</p>';
		$post_formats_content .= '<h2>' . __( 'Link', 'buttercream' ) . '</h2>';
		$post_formats_content .= '<p><strong>' . __( 'Key', 'buttercream' ) . '</strong> - _format_link_url<br />';
		$post_formats_content .= '<strong>' . __( 'Value', 'buttercream' ) . '</strong> - ' . __( 'Link URL', 'buttercream' ) . '</p>';
		$post_formats_content .= '<p>' . __( 'The post title will be displayed as the link text. Additional content will be displayed underneath.', 'buttercream' ) . '</p>';
		$post_formats_content .= '<h2>' . __( 'Quote', 'buttercream' ) . '</h2>';
		$post_formats_content .= '<p><strong>' . __( 'Key', 'buttercream' ) . '</strong> - _format_quote_source_name<br />';
		$post_formats_content .= '<strong>' . __( 'Value', 'buttercream' ) . '</strong> - ' . __( 'Name of the quote\'s source (optional)', 'buttercream' ) . '</p>';
		$post_formats_content .= '<p><strong>' . __( 'Key', 'buttercream' ) . '</strong> - _format_quote_source_url<br />';
		$post_formats_content .= '<strong>' . __( 'Value', 'buttercream' ) . '</strong> - ' . __( 'Link to the source (optional)', 'buttercream' ) . '</p>';
		$post_formats_content .= '<p>' . __( 'Simply put the text you want to quote in the content area of your post. Optionally, you can add the name of the source and a link in the custom fields above. The quote is displayed in a blockquote format, set apart from your other posts. No post title is displayed.', 'buttercream' ) . '</p>';
		$post_formats_content .= '<h2>' . __( 'Aside', 'buttercream' ) . '</h2>';
		$post_formats_content .= '<p>' . __( 'Similar to a Facebook update. Paste your aside into the content area and the text will appear centered in a fancier font. No post title is displayed.', 'buttercream' ) . '</p>';
		$post_formats_content .= '<h2>' . __( 'Status', 'buttercream' ) . '</h2>';
		$post_formats_content .= '<p>' . __( 'Similar to a Twitter post. Paste your status update into the content area and the text will appear with a timestamp. No post title is displayed.', 'buttercream' ) . '</p>';

		$screen->add_help_tab( array (
				'id' => 'buttercream-theme-options',
				'title' => __( 'Theme Options', 'buttercream' ),
				'content' => $theme_options_content
				)
		);

		$screen->add_help_tab( array (
				'id' => 'buttercream-post-formats',
				'title' => __( 'Using Post Formats', 'buttercream' ),
				'content' => $post_formats_content
				)
		);
	}
}

?>