<?php
/**
 * Vintage Camera Theme Options
 *
 * @package Vintage Camera
 */

/**
 * Register the form setting for our vintage_camera_options array.
 *
 * This function is attached to the admin_init action hook.
 *
 * This call to register_setting() registers a validation callback, vintage_camera_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 vintage_camera_theme_options_init() {

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

	register_setting(
		'vintage_camera_options',       // Options group, see settings_fields() call in vintage_camera_theme_options_render_page()
		'vintage_camera_theme_options', // Database option, see vintage_camera_get_theme_options()
		'vintage_camera_theme_options_validate' // The sanitization callback, see vintage_camera_theme_options_validate()
	);

	// Register our settings field group
	add_settings_section(
		'general', // Unique identifier for the settings section
		'', // Section title (we don't want one)
		'__return_false', // Section callback (we don't want anything)
		'theme_options' // Menu slug, used to uniquely identify the page; see vintage_camera_theme_options_add_page()
	);

	/* Register our individual settings fields */
	add_settings_field( 'vintage_camera_theme_style', __( 'Theme Style', 'vintage-camera' ), 'vintage_camera_settings_field_theme_style', 'theme_options', 'general' );

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


/**
 * Change the capability required to save the 'vintage_camera_options' options group.
 *
 * @see vintage_camera_theme_options_init() First parameter to register_setting() is the name of the options group.
 * @see vintage_camera_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 vintage_camera_option_page_capability( $capability ) {
	return 'edit_theme_options';
}
add_filter( 'option_page_capability_vintage_camera_options', 'vintage_camera_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 vintage_camera_theme_options_add_page() {
	global $vintagecamera_options_hook;
	$vintagecamera_options_hook = add_theme_page(
		__( 'Theme Options', 'vintage-camera' ),   // Name of page
		__( 'Theme Options', 'vintage-camera' ),   // Label in menu
		'edit_theme_options',                    // Capability required
		'theme_options',                         // Menu slug, used to uniquely identify the page
		'vintage_camera_theme_options_render_page' // Function that renders the options page
	);

	if ( ! $vintagecamera_options_hook )
		return;
}
add_action( 'admin_menu', 'vintage_camera_theme_options_add_page' );


/**
 * Returns an array of Theme Style options registered for Vintage Camera.
 */
function vintage_camera_theme_style() {
	$vintage_camera_theme_style = array(
		'k1000' => array(
			'value' => 'k1000',
			'label' => __( 'K1000', 'vintage-camera' ),
			'defaults' => array(
				'default-color' => 'ededed',
				'default-image' => get_template_directory_uri() . '/img/background-light.png',
				'default-text-color' => '333',
				'default-description-color' => 'a9c137',
				'default-header-image' => get_template_directory_uri() . '/img/headers/k1000.png',
			)
		),
		'brownie' => array(
			'value' => 'brownie',
			'label' => __( 'Brownie', 'vintage-camera' ),
			'defaults' => array(
				'default-color' => 'c0b5a4',
				'default-image' => get_template_directory_uri() . '/img/background.png',
				'default-text-color' => '333',
				'default-description-color' => 'a1440b',
				'default-header-image' => get_template_directory_uri() . '/img/headers/brownie.png',
			)
		),
		'polaroid' => array(
			'value' => 'polaroid',
			'label' => __( 'Land', 'vintage-camera' ),
			'defaults' => array(
				'default-color' => 'c4c4c4',
				'default-image' => get_template_directory_uri() . '/img/background.png',
				'default-text-color' => 'fff',
				'default-description-color' => 'a5443f',
				'default-header-image' => get_template_directory_uri() . '/img/headers/polaroid.png',
			)
		),
		'diana' => array(
			'value' => 'diana',
			'label' => __( 'Diana', 'vintage-camera' ),
			'defaults' => array(
				'default-color' => '555',
				'default-image' => get_template_directory_uri() . '/img/background-dark.png',
				'default-text-color' => 'fff',
				'default-description-color' => '5ab9c1',
				'default-header-image' => get_template_directory_uri() . '/img/headers/diana.png',
			)
		),
		'sabre' => array(
			'value' => 'sabre',
			'label' => __( 'Sabre', 'vintage-camera' ),
			'defaults' => array(
				'default-color' => 'e7e4d3',
				'default-image' => get_template_directory_uri() . '/img/background-light.png',
				'default-text-color' => '333',
				'default-description-color' => 'e27d8c',
				'default-header-image' => get_template_directory_uri() . '/img/headers/sabre.png',
			)
		),
		'savoy' => array(
			'value' => 'savoy',
			'label' => __( 'Savoy', 'vintage-camera' ),
			'defaults' => array(
				'default-color' => 'e7e4d3',
				'default-image' => get_template_directory_uri() . '/img/background-light.png',
				'default-text-color' => '333',
				'default-description-color' => 'c64',
				'default-header-image' => get_template_directory_uri() . '/img/headers/savoy.png',
			)
		)
	);

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

/**
 * Returns the default options for Vintage Camera.
 */
function vintage_camera_get_default_theme_options() {
	$default_theme_options = array(
		'theme_style' => 'k1000'
	);

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


/**
 * Returns the options array for Vintage Camera.
 */
function vintage_camera_get_theme_options() {
	return get_option( 'vintage_camera_theme_options', vintage_camera_get_default_theme_options() );
}


/**
 * Returns layout defaults
 */
function vintage_camera_get_layout_defaults() {
	$options = vintage_camera_get_theme_options();
	$theme_style = $options['theme_style'];

	$default_theme_options = vintage_camera_get_default_theme_options();
	$default_theme_style = $default_theme_options['theme_style'];

	$theme_style_values = vintage_camera_theme_style();

	if ( $theme_style ) {
		$defaults = $theme_style_values[$theme_style]['defaults'];
	} else {
		$defaults = $theme_style_values[$default_theme_style]['defaults'];
	}

	return apply_filters( 'vintage_camera_get_layout_defaults', $defaults );
}


/**
 * Renders the Theme Style setting field.
 *
 */
function vintage_camera_settings_field_theme_style() {
	$options = vintage_camera_get_theme_options();

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


/**
 * Returns the options array for Vintage Camera.
 */
function vintage_camera_theme_options_render_page() {
	?>
	<div class="wrap">
		<?php screen_icon(); ?>
		<h2><?php printf( __( '%s Theme Options', 'vintage-camera' ), wp_get_theme() ); ?></h2>
		<?php settings_errors(); ?>

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


/**
 * Sanitize and validate form input. Accepts an array, return a sanitized array.
 *
 * @see vintage_camera_theme_options_init()
 * @todo set up Reset Options action
 */
function vintage_camera_theme_options_validate( $input ) {
	$output = $defaults = vintage_camera_get_default_theme_options();
	$theme_settings = vintage_camera_theme_style();
	$current_theme_options = vintage_camera_get_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'], $theme_settings ) ) {
		$output['theme_style'] = $input['theme_style'];

		// If user selects new theme_style, set bg-color automatically
		if ( $current_theme_options['theme_style'] != $input['theme_style'] ) {
			set_theme_mod( 'background_color', $theme_settings[$input['theme_style']]['defaults']['default-color'] );
		}
	}

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


/**
 * Theme Options Admin Styles
 */
function vintage_camera_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_print_styles-appearance_page_theme_options', 'vintage_camera_theme_options_admin_styles' );


/**
 * Add support for Theme Options in the Customizer
 */
function vintage_camera_customize_register( $wp_customize ) {

	$wp_customize->add_section( 'vintage_camera_theme_options', array(
		'title'		=> __( 'Theme Options', 'vintage-camera' ),
		'priority'	=> 35,
		'transport'	=> 'postMessage',
	) );

	$wp_customize->add_setting( 'vintage_camera_theme_options[theme_style]', array(
		'default'		=> 'k1000',
		'type'			=> 'option',
		'capability'	=> 'edit_theme_options',
	) );

	$wp_customize->add_control( 'vintage_camera_theme_style', array(
		'label'		=> __( 'Theme Style', 'vintage-camera' ),
		'section'	=> 'vintage_camera_theme_options',
		'settings'	=> 'vintage_camera_theme_options[theme_style]',
		'type'		=> 'select',
		'choices'	=> array(
						'brownie' 	=> __( 'Brownie', 'vintage-camera' ),
						'polaroid' 	=> __( 'Land', 'vintage-camera' ),
						'diana' 	=> __( 'Diana', 'vintage-camera' ),
						'k1000' 	=> __( 'K1000', 'vintage-camera' ),
						'sabre' 	=> __( 'Sabre', 'vintage-camera' ),
						'savoy' 	=> __( 'Savoy', 'vintage-camera' ),
					),
	) );

}
add_action( 'customize_register', 'vintage_camera_customize_register' );