noptin_convert_classic_template( $template )

function noptin_convert_classic_template( $template ) {

	$new_fields = array(

		'titleTypography'       => array(
			'font_size'      => '30',
			'font_weight'    => '700',
			'line_height'    => '1.5',
			'decoration'     => '',
			'style'          => '',
			'generated'      => 'font-size: 30px; font-weight: 700; line-height: 1.5;',
		),

		'titleAdvanced'         => array(
			'margin' => new stdClass(),
			'padding' => array(
				'top' => '4'
			),
			'generated' => 'padding-top: 4px;',
			'classes'     => ''
		),

		'hidePrefix'           => true,
		'prefix'                 => __( 'Prefix', 'newsletter-optin-box' ),
		'prefixColor'            => '#313131',
		'prefixTypography'       => array(
			'font_size'      => '20',
			'font_weight'    => '500',
			'line_height'    => '1.3',
			'decoration'     => '',
			'style'          => '',
			'generated'      => 'font-size: 20px; font-weight: 500; line-height: 1.3;',
		),

		'prefixAdvanced'         => array(
			'margin' => new stdClass(),
			'padding' => array(
				'top' => '4'
			),
			'generated' => 'padding-top: 4px;',
			'classes'     => ''
		),

		'descriptionTypography' => array(
			'font_size'      => '16',
			'font_weight'    => '500',
			'line_height'    => '1.3',
			'decoration'     => '',
			'style'          => '',
			'generated'      => 'font-size: 16px; font-weight: 500; line-height: 1.3;',
		),

		'descriptionAdvanced'         => array(
			'padding' => new stdClass(),
			'margin' => array(
				'top' => '18'
			),
			'generated' => 'margin-top: 18px;',
			'classes'     => ''
		),

		'noteTypography'       => array(
			'font_size'      => '14',
			'font_weight'    => '400',
			'line_height'    => '1',
			'decoration'     => '',
			'style'          => '',
			'generated'      => 'font-size: 14px; font-weight: 400; line-height: 1;',
		),

		'noteAdvanced'       => array(
			'padding' => new stdClass(),
			'margin'  => array(
				'top' => '10'
			),
			'generated' => 'margin-top: 10px;',
			'classes'     => ''
		),

	);

	$data = $template['data'];

	foreach ( $new_fields as $key => $value ) {
		if ( ! isset( $data[ $key ] ) ) {
			$data[ $key ] = $value;
		}
	}

	// Convert the borders.
	if ( empty( $data['formBorder'] ) || ! is_array( $data['formBorder'] ) ) {
		$data['formBorder'] = array(
			'style'         => 'solid',
			'border_radius' => isset( $data['formRadius'] ) ? intval( $data['formRadius'] ) : 0,
			'border_width'  => isset( $data['borderSize'] ) ? intval( $data['borderSize'] ) : 4,
			'border_color'  => isset( $data['noptinFormBorderColor'] ) ? $data['noptinFormBorderColor'] : '#ffffff',
		);

		extract( $data['formBorder'] );
		$data['formBorder']['generated'] = "border-style: solid; border-radius: {$border_radius}px; border-width: {$border_width}px; border-color: {$border_color};";
	}

	$template['data'] = $data;
	return $template;
}