seamless-donations-form.php

<?php
/*
 Seamless Donations by David Gewirtz, adopted from Allen Snook

 Lab Notes: http://zatzlabs.com/lab-notes/
 Plugin Page: http://zatzlabs.com/seamless-donations/
 Contact: http://zatzlabs.com/contact-us/

 Copyright (c) 2015 by David Gewirtz
 */

function seamless_donations_generate_donation_form () {

	$form_action = plugins_url ( '/seamless-donations-payment.php', __FILE__ );

	//$session_id = $GLOBALS['seamless_donations_session_id'];
	//$session_id = 'dgxdonate_' . substr ( session_id (), 0, 10 ) . '_' . time ();
	$session_id = seamless_donations_get_guid ( 'sd' );
	dgx_donate_debug_log ( '----------------------------------------' );
	dgx_donate_debug_log ( 'PREPARING DONATION FORM' );
	dgx_donate_debug_log ( "Seamless Donations Version: " . dgx_donate_get_version () );
	dgx_donate_debug_log ( "User browser: " . seamless_donations_get_browser_name () );
	dgx_donate_debug_log ( "Assigning hidden field session ID to $session_id" );
	dgx_donate_debug_log ( "Form action: $form_action" );

	$form = array(
		'id'       => 'seamless-donations-form',
		'name'     => 'seamless-donations-form',
		'action'   => $form_action,
		'method'   => 'post',
		'elements' => array(
			'session_id_element'   => array(
				'type'  => 'hidden', // Save the session ID as a hidden input
				'group' => '_dgx_donate_session_id',
				'value' => $session_id,
			),
			'redirect_url_element' => array(
				'type'  => 'hidden', // Save the PayPal redirect URL as a hidden input
				'group' => '_dgx_donate_redirect_url',
				'value' => $form_action,
			),
			'success_url_element'  => array(
				'type'  => 'hidden', // Save the PayPal redirect URL as a hidden input
				'group' => '_dgx_donate_success_url',
				'value' => dgx_donate_paypalstd_get_current_url (),
			),
		),
	);

	// Start the outermost container
	$form['outermost_container'] = array(
		'id' => 'dgx-donate-container',
	);

	// Pick and choose the built in sections this gateway supports

	$warning_section = seamless_donations_donation_form_warning_section ();
	if( is_array ( $warning_section ) ) {
		$form['outermost_container']['warning_section'] = $warning_section;
	}

	$form['outermost_container']['donation_section'] = seamless_donations_get_donation_section ();
	$form['outermost_container']['tribute_section']  = seamless_donations_get_tribute_section ();
	$form['outermost_container']['donor_section']    = seamless_donations_get_donor_section ();
	$form['outermost_container']['billing_section']  = seamless_donations_get_billing_section ();
	$form['outermost_container']['paypal_section']   = seamless_donations_get_paypal_section ();
	$form['outermost_container']['submit_section']   = seamless_donations_get_submit_section ();

	$form = apply_filters ( 'seamless_donations_form_section_order', $form );

	// build and display the form
	$html = seamless_donations_forms_engine ( $form );

	return $html;
}

function seamless_donations_donation_form_warning_section () {

	// Display any setup warnings we need to display here (e.g. running in test mode)

	$paypal_server = get_option ( 'dgx_donate_paypal_server' );
	if( $paypal_server == "SANDBOX" ) {
		$warning = array(
			'id'       => 'dgx-donate-form-sandbox-warning',
			'class'    => 'dgx-donate-form-section',
			'elements' => array(
				array(
					'type'   => 'static',
					'before' => '<p>',
					'after'  => '</p>',
					'value'  => esc_html__ (
						"Warning - Seamless Donations is currently configured to use the Sandbox (Test Server).",
						'seamless-donations' ),
				)
			)
		);

		return $warning;
	} else {
		return false;
	}
}

function seamless_donations_get_donation_section () {

	$donation_section = array(
		'id'       => 'dgx-donate-form-donation-section',
		'class'    => 'dgx-donate-form-section',
		'elements' => array(
			'donation_header' => array(
				'type'   => 'static',
				'before' => '<h2>',
				'after'  => '</h2>',
				'value'  => esc_html__ ( 'Donation Information', 'seamless-donations' ),
			),
			'header_desc'     => array(
				'type'   => 'static',
				'before' => '<p>',
				'after'  => '</p>',
				'value'  => esc_html__ ( 'I would like to make a donation in the amount of:', 'seamless-donations' ),
			),
		),
	);

	// assemble the radio buttons for the giving levels
	$index         = 0;
	$giving_levels = dgx_donate_get_giving_levels ();
	foreach( $giving_levels as $giving_level ) {

		$giving_level_key    = "dgx_donate_giving_level_" . $giving_level;
		$giving_level_option = get_option ( $giving_level_key );

		if( $giving_level_option == 'yes' ) {
			$formatted_amount = seamless_donations_get_escaped_formatted_amount ( $giving_level, 0 );
			$element          = array(
				'type'    => 'radio',
				'group'   => '_dgx_donate_amount',
				'conceal' => 'other-donation-level',
				'wrapper' => 'span',
				'value'   => $giving_level,
				'prompt'  => $formatted_amount,
			);
			if( $index == 0 ) {
				$element['select'] = true;
			}
			if( $index > 0 ) {
				$element['class'] = 'horiz';
			}
			$donation_section['elements'][ $giving_level_key ] = $element;
			++ $index;
		}
	}

	// add the "other" button and the text zone for "other" entry
	$donation_section['elements']['other_radio_button'] = array(
		'type'    => 'radio',
		'group'   => '_dgx_donate_amount',
		'prompt'  => esc_html__ ( 'Other', 'seamless-donations' ),
		'reveal'  => 'other-donation-level',
		'wrapper' => 'span',
		'value'   => 'OTHER',
		'class'   => 'horiz',
		'id'      => 'dgx-donate-other-radio',
	);

	$donation_section['elements']['_dgx_donate_user_amount'] = array(
		'type'       => 'text',
		'size'       => 15,
		'class'      => 'aftertext',
		'validation' => 'currency',
		'cloak'      => 'other-donation-level',
		'id'         => '_dgx_donate_user_amount',
		'before'     => esc_html__ ( 'Other: ', 'seamless-donations' ),
	);

	// Designated Funds

	if( get_option ( 'dgx_donate_show_designated_funds_section' ) == 'true' ) {
		// in 4.0+ funds are a custom post type, not an option array

		$query_args  = array(
			'orderby'     => 'title',
			'order'       => 'asc',
			'post_type'   => 'funds',
			'post_status' => 'publish',
			'numberposts' => - 1,
			'meta_query'  => array(
				array(
					'key'   => '_dgx_donate_fund_show',
					'value' => 'Yes',
				)
			)
		);
		$posts_array = get_posts ( $query_args );

		$fund_count = count ( $posts_array );

		if( $fund_count > 0 ) {
			// designated fund checkbox
			$donation_section['elements']['_dgx_donate_designated'] = array(
				'type'   => 'checkbox',
				'id'     => 'dgx-donate-designated',
				'reveal' => 'specific-fund',
				'prompt' => esc_html__ (
					"I would like to designate this donation to a specific fund", 'seamless-donations' ),
			);

			$options_array = array(
				0 => 'No fund specified',
			);
			foreach( $posts_array as $post ) {
				$title                = $post->post_title;
				$id                   = $post->ID;
				$options_array[ $id ] = $title;
			}

			$funds_section                     = array(
				'elements' => array(
					'designated_fund_label'       => array(
						'type'  => 'static',
						'cloak' => 'specific-fund',
						'value' => esc_html__ ( 'Designated Fund: ', 'seamless-donations' ) . " ",
					),
					'_dgx_donate_designated_fund' => array(
						'type'    => 'select',
						'cloak'   => 'specific-fund',
						'class'   => '',
						'options' => $options_array,
					),
				),
			);
			$donation_section['funds_section'] = $funds_section;
		}
	}

	// Repeating donations
	if( get_option ( 'dgx_donate_show_repeating_option' ) == 'true' ) {
		$repeating_section                     = array(
			'elements' => array(
				'_dgx_donate_repeating' => array(
					'type'   => 'checkbox',
					'id'     => 'dgx-donate-repeating',
					'prompt' => esc_html__ (
						"I would like this donation to automatically repeat each month", 'seamless-donations' ),
					'before' => '<p>',
					'after'  => '</p>',
				),
			)
		);
		$donation_section['repeating_section'] = $repeating_section;
	}

	$donation_section = apply_filters (
		'seamless_donations_form_donation_section', $donation_section );

	return $donation_section;
}

function seamless_donations_get_tribute_section () {

	if( get_option ( 'dgx_donate_show_tribute_section' ) == 'true' ) {

		$default_country = get_option ( 'dgx_donate_default_country' );
		$countries_array = dgx_donate_get_countries ();
		$states_array    = dgx_donate_get_states ();
		$provinces_array = dgx_donate_get_provinces ();

		$postal_code_array        = dgx_donate_get_countries_requiring_postal_code ();
		$postal_code_reveal_array = array();
		for( $postal_code_index = 0; $postal_code_index < count ( $postal_code_array ); ++ $postal_code_index ) {
			$postal_code_country = $postal_code_array[ $postal_code_index ];
			switch( $postal_code_country ) {
				case 'US':
					$postal_code_reveal_array['US'] = 'conceal-state conceal-postcode';
					break;
				case 'CA':
					$postal_code_reveal_array['CA'] = 'conceal-province conceal-postcode';
					break;
				default:
					$postal_code_reveal_array[ $postal_code_country ] = 'conceal-postcode';
			}
		}

		$tribute_section = array(
			'id'       => 'dgx-donate-form-tribute-section',
			'class'    => 'dgx-donate-form-section',
			'elements' => array(
				'donation_header'                => array(
					'type'   => 'static',
					'before' => '<h2>',
					'after'  => '</h2>',
					'value'  => esc_html__ ( 'Tribute Gift', 'seamless-donations' ),
				),
				'_dgx_donate_tribute_gift'       => array(
					'type'    => 'checkbox',
					'id'      => 'dgx-donate-tribute',
					'reveal'  => 'in-honor',
					'check'   => '_dgx_donate_honor_by_email',
					'conceal' => 'postal-acknowledgement conceal-state conceal-postcode conceal-province',
					'prompt'  => esc_html__ (
						"Check here to donate in honor or memory of someone", 'seamless-donations' ),
				),
				'_dgx_donate_memorial_gift'      => array(
					'type'   => 'checkbox',
					'cloak'  => 'in-honor',
					'prompt' => esc_html__ (
						"Check here if this is a memorial gift", 'seamless-donations' ),
				),
				'_dgx_donate_honoree_name'       => array(
					'type'   => 'text',
					'cloak'  => 'in-honor',
					'size'   => 20,
					'before' => esc_html__ ( 'Name of person to be honored: ', 'seamless-donations' ),
				),
				'_dgx_donate_honor_by_email'     => array(
					'type'    => 'radio',
					'cloak'   => 'in-honor',
					'select'  => true,
					'group'   => '_dgx_donate_honor_by_email',
					'value'   => 'TRUE',
					'reveal'  => 'email-acknowledgement',
					'conceal' => 'postal-acknowledgement conceal-state conceal-postcode conceal-province',
					'prompt'  => esc_html__ (
						"Send acknowledgement via email", 'seamless-donations' ),
				),
				'_dgx_donate_honor_by_post_mail' => array(
					'type'    => 'radio',
					'cloak'   => 'in-honor',
					'group'   => '_dgx_donate_honor_by_email',
					'value'   => 'FALSE',
					'reveal'  => 'postal-acknowledgement',
					'conceal' => 'email-acknowledgement',
					'prompt'  => esc_html__ (
						"Send acknowledgement via postal mail", 'seamless-donations' ),
				),
				'_dgx_donate_honoree_email_name' => array(
					'type'   => 'text',
					'cloak'  => 'in-honor email-acknowledgement',
					'size'   => 20,
					'before' => esc_html__ ( 'Email Name: ', 'seamless-donations' ),
				),
				'_dgx_donate_honoree_email'      => array(
					'type'       => 'text',
					'cloak'      => 'in-honor email-acknowledgement',
					'validation' => 'email',
					'size'       => 20,
					'before'     => esc_html__ ( 'Email: ', 'seamless-donations' ),
				),
				'_dgx_donate_honoree_post_name'  => array(
					'type'   => 'text',
					'cloak'  => 'postal-acknowledgement',
					'size'   => 20,
					'before' => esc_html__ ( 'Name: ', 'seamless-donations' ),
				),
				'_dgx_donate_honoree_address'    => array(
					'type'   => 'text',
					'cloak'  => 'postal-acknowledgement',
					'size'   => 20,
					'before' => esc_html__ ( 'Address: ', 'seamless-donations' ),
				),
				'_dgx_donate_honoree_city'       => array(
					'type'   => 'text',
					'cloak'  => 'postal-acknowledgement',
					'size'   => 20,
					'before' => esc_html__ ( 'City: ', 'seamless-donations' ),
				),
				'_dgx_donate_honoree_state'      => array(
					'type'    => 'select',
					'cloak'   => 'conceal-state',
					'size'    => 1,
					'options' => $states_array,
					'before'  => esc_html__ ( 'State : ', 'seamless-donations' ),
				),
				'_dgx_donate_honoree_province'   => array(
					'type'    => 'select',
					'cloak'   => 'conceal-province',
					'size'    => 1,
					'options' => $provinces_array,
					'before'  => esc_html__ ( 'Province: ', 'seamless-donations' ),
				),
				'_dgx_donate_honoree_country'    => array(
					'type'    => 'select',
					'cloak'   => 'postal-acknowledgement',
					'conceal' => 'conceal-state conceal-postcode conceal-province',
					'reveal'  => $postal_code_reveal_array,
					'options' => $countries_array,
					'value'   => $default_country,
					'size'    => 1,
					'before'  => esc_html__ ( 'Country: ', 'seamless-donations' ),
				),
				'_dgx_donate_honoree_zip'        => array(
					'type'   => 'text',
					'cloak'  => 'conceal-postcode',
					'size'   => 10,
					'before' => esc_html__ ( 'Postal Code: ', 'seamless-donations' ),
				),

			),
		);
	} else {

		$tribute_section = array();
	}

	$tribute_section = apply_filters (
		'seamless_donations_form_tribute_section', $tribute_section );

	return $tribute_section;
}

function seamless_donations_get_donor_section () {

	$donor_section = array(
		'id'       => 'dgx-donate-form-donor-section',
		'class'    => 'dgx-donate-form-section',
		'elements' => array(
			'donation_header'              => array(
				'type'   => 'static',
				'before' => '<h2>',
				'after'  => '</h2>',
				'value'  => esc_html__ ( 'Donor Information', 'seamless-donations' ),
			),
			'_dgx_donate_donor_first_name' => array(
				'type'       => 'text',
				'size'       => 20,
				'validation' => 'required',
				'before'     => esc_html__ ( 'First Name:', 'seamless-donations' ),
			),
			'_dgx_donate_donor_last_name'  => array(
				'type'       => 'text',
				'size'       => 20,
				'validation' => 'required',
				'before'     => esc_html__ ( 'Last Name:', 'seamless-donations' ),
			),
			'_dgx_donate_donor_email'      => array(
				'type'       => 'text',
				'size'       => 20,
				'validation' => 'required,email',
				'before'     => esc_html__ ( 'Email:', 'seamless-donations' ),
			),
		),
	);

	$donor_anonymous = get_option ( 'dgx_donate_show_anonymous_option' );
	if( $donor_anonymous == 'true' ) {
		$donor_section['elements']['_dgx_donate_anonymous'] = array(
			'type'   => 'checkbox',
			'prompt' => esc_html__ (
				"Please do not display my name publicly. I would like to remain anonymous",
				'seamless-donations' ),
		);
	}

	$show_list_subscribe = get_option ( 'dgx_donate_show_mailing_list_option' );
	if( $show_list_subscribe == 'true' ) {
		$donor_section['elements']['_dgx_donate_add_to_mailing_list'] = array(
			'type'   => 'checkbox',
			'prompt' => esc_html__ (
				"Add me to your mailing list", 'seamless-donations' ),
		);
	}

	$show_donor_telephone_field = get_option ( 'dgx_donate_show_donor_telephone_field' );
	if( $show_donor_telephone_field != 'false' ) {
		$donor_section['elements']['_dgx_donate_donor_phone'] = array(
			'type'       => 'text',
			'size'       => 20,
			'validation' => 'required',
			'before'     => esc_html__ ( 'Phone:', 'seamless-donations' ),
		);
		if( $show_donor_telephone_field == 'required' ) {
			$donor_section['elements']['_dgx_donate_donor_phone']['validation'] = 'required';
		}
	}

	$show_donor_employer_field    = get_option ( 'dgx_donate_show_donor_employer_field' );
	$show_employer_match_checkbox = get_option ( 'dgx_donate_show_employer_section' );
	$show_donor_occupation_field  = get_option ( 'dgx_donate_show_donor_occupation_field' );

	if( $show_donor_employer_field != 'false' ) {
		$donor_section['elements']['_dgx_donate_employer_name'] = array(
			'type'   => 'text',
			'size'   => 20,
			'before' => esc_html__ ( 'Employer:', 'seamless-donations' ),
		);
		if( $show_donor_employer_field == 'required' ) {
			$donor_section['elements']['_dgx_donate_employer_name']['validation'] = 'required';
		}
		if( $show_employer_match_checkbox != 'false' ) {
			$donor_section['elements']['_dgx_donate_employer_match'] = array(
				'type'   => 'checkbox',
				'prompt' => esc_html__ (
					"Check here if your employer matches donations", 'seamless-donations' ),
			);
		}
	}

	if( $show_donor_occupation_field != 'false' ) {
		$donor_section['elements']['_dgx_donate_occupation'] = array(
			'type'   => 'text',
			'size'   => 20,
			'before' => esc_html__ ( 'Occupation:', 'seamless-donations' ),
		);
		if( $show_donor_occupation_field == 'required' ) {
			$donor_section['elements']['_dgx_donate_occupation']['validation'] = 'required';
		}
	}

	$donor_section = apply_filters (
		'seamless_donations_form_donor_section', $donor_section );

	return $donor_section;
}

function seamless_donations_get_billing_section () {

	$show_address = get_option ( 'dgx_donate_show_donor_address_fields' );

	if( $show_address != 'true' ) {
		return array();
	}

	$default_country = get_option ( 'dgx_donate_default_country' );
	$countries_array = dgx_donate_get_countries ();
	$states_array    = dgx_donate_get_states ();
	$provinces_array = dgx_donate_get_provinces ();

	$postal_code_array        = dgx_donate_get_countries_requiring_postal_code ();
	$postal_code_reveal_array = array();
	for( $postal_code_index = 0; $postal_code_index < count ( $postal_code_array ); ++ $postal_code_index ) {
		$postal_code_country = $postal_code_array[ $postal_code_index ];
		switch( $postal_code_country ) {
			case 'US':
				$postal_code_reveal_array['US'] = 'conceal-donor-state conceal-donor-postcode';
				break;
			case 'CA':
				$postal_code_reveal_array['CA'] = 'conceal-donor-province conceal-donor-postcode';
				break;
			case 'GB':
				$postal_code_reveal_array['GB'] = 'gift-aid conceal-donor-postcode';
				break;
			default:
				$postal_code_reveal_array[ $postal_code_country ] = 'conceal-donor-postcode';
		}
	}

	$billing_section = array(
		'id'       => 'dgx-donate-form-billing-section',
		'class'    => 'dgx-donate-form-section',
		'elements' => array(
			'donation_header'            => array(
				'type'   => 'static',
				'before' => '<h2>',
				'after'  => '</h2>',
				'value'  => esc_html__ ( 'Donor Address', 'seamless-donations' ),
			),
			'_dgx_donate_donor_address'  => array(
				'type'       => 'text',
				'size'       => 20,
				'validation' => 'required',
				'before'     => esc_html__ ( 'Address: ', 'seamless-donations' )
			),
			'_dgx_donate_donor_address2' => array(
				'type'   => 'text',
				'size'   => 20,
				'before' => esc_html__ ( 'Address 2: ', 'seamless-donations' ),
				'after'  =>
					"<span class='dgx-donate-comment'>" .
					esc_html__ ( '(optional)', 'seamless-donations' ) . "</span>"
			),
			'_dgx_donate_donor_city'     => array(
				'type'       => 'text',
				'size'       => 20,
				'validation' => 'required',
				'before'     => esc_html__ ( 'City: ', 'seamless-donations' )
			),
			'_dgx_donate_donor_state'    => array(
				'type'    => 'select',
				'size'    => 1,
				'options' => $states_array,
				'before'  => esc_html__ ( 'State : ', 'seamless-donations' ),
			),
			'_dgx_donate_donor_province' => array(
				'type'    => 'select',
				'size'    => 1,
				'options' => $provinces_array,
				'before'  => esc_html__ ( 'Province: ', 'seamless-donations' ),
			),
			'_dgx_donate_donor_country'  => array(
				'type'    => 'select',
				'conceal' => 'conceal-donor-state conceal-donor-postcode conceal-donor-province gift-aid',
				'reveal'  => $postal_code_reveal_array,
				'options' => $countries_array,
				'value'   => $default_country,
				'size'    => 1,
				'before'  => esc_html__ ( 'Country: ', 'seamless-donations' ),
			),
			'_dgx_donate_donor_zip'      => array(
				'type'   => 'text',
				'size'   => 10,
				'before' => esc_html__ ( 'Postal Code: ', 'seamless-donations' ),
			),
			'dgx_donate_uk_gift_aid'     => array(
				'type'   => 'checkbox',
				'prompt' => esc_html__ (
					"I am a UK taxpayer and my gift qualifies for Gift Aid.", 'seamless-donations' ),
			),
		),
	);

	// since these fields are visible on page load, we need to make certain fields visible based on country
	// therefore, we don't want them cloaked, but we want them still interactive, so we'll put them in
	// class instead.
	switch( $default_country ) {
		case 'US':
			$billing_section['elements']['_dgx_donate_donor_state']['class']    = 'conceal-donor-state';
			$billing_section['elements']['_dgx_donate_donor_province']['cloak'] = 'conceal-donor-province';
			$billing_section['elements']['_dgx_donate_donor_zip']['class']      = 'conceal-donor-postcode';
			$billing_section['elements']['dgx_donate_uk_gift_aid']['cloak']     = 'gift-aid';
			break;
		case 'CA':
			$billing_section['elements']['_dgx_donate_donor_state']['cloak']    = 'conceal-donor-state';
			$billing_section['elements']['_dgx_donate_donor_province']['class'] = 'conceal-donor-province';
			$billing_section['elements']['_dgx_donate_donor_zip']['class']      = 'conceal-donor-postcode';
			$billing_section['elements']['dgx_donate_uk_gift_aid']['cloak']     = 'gift-aid';
			break;
		case 'GB':
			$billing_section['elements']['_dgx_donate_donor_state']['cloak']    = 'conceal-donor-state';
			$billing_section['elements']['_dgx_donate_donor_province']['cloak'] = 'conceal-donor-province';
			$billing_section['elements']['_dgx_donate_donor_zip']['class']      = 'conceal-donor-postcode';
			$billing_section['elements']['dgx_donate_uk_gift_aid']['class']     = 'gift-aid';
			break;
		default:
			$billing_section['elements']['_dgx_donate_donor_state']['cloak']    = 'conceal-donor-state';
			$billing_section['elements']['_dgx_donate_donor_province']['cloak'] = 'conceal-donor-province';
			if(dgx_donate_country_requires_postal_code($default_country)){
				$billing_section['elements']['_dgx_donate_donor_zip']['class'] = 'conceal-donor-postcode';
			} else {
				$billing_section['elements']['_dgx_donate_donor_zip']['cloak'] = 'conceal-donor-postcode';
			}
			$billing_section['elements']['dgx_donate_uk_gift_aid']['cloak']     = 'gift-aid';
	}

	$billing_section = apply_filters (
		'seamless_donations_form_billing_section', $billing_section );

	return $billing_section;
}

/**
 * @return array|mixed|void
 */
function seamless_donations_get_paypal_section () {

	$paypal_email  = get_option ( 'dgx_donate_paypal_email' );
	$currency_code = get_option ( 'dgx_donate_currency' );

	$notify_url = plugins_url ( '/dgx-donate-paypalstd-ipn.php', __FILE__ );
	//$session_id = session_id ();

	// set up success URL
	$success_url = dgx_donate_paypalstd_get_current_url ();
	//	if( strpos ( $success_url, "?" ) === false ) {
	//		$success_url .= "?";
	//	} else {
	//		$success_url .= "&";
	//	}
	//	$success_url .= "thanks=1&sessionid=";
	//	$success_url .= "$session_id";

	// not used in core code, but users might be including this somewhere
	$item_name = apply_filters ( 'dgx_donate_item_name', __ ( 'Donation', 'seamless-donations' ) );

	$paypal_hidden_section = array(
		'id'       => 'dgx-donate-form-paypal-hidden-section',
		'class'    => 'dgx-donate-form-section',
		'style'    => 'display:none',          // we want to hide this section from the form
		'elements' => array(
			'nonce'         => array(
				'type'  => 'hidden',
				'value' => wp_create_nonce ( 'dgx-donate-nonce' ),
			),
			'cmd'           => array(
				'type'  => 'hidden',
				'value' => '',
			),
			'business'      => array(
				'type'  => 'hidden',
				'value' => esc_attr ( $paypal_email ),
			),
			'return'        => array(
				'type'  => 'hidden',
				'value' => '', // set later in payment function, not really needed here
			),
			'first_name'    => array(
				'type'  => 'hidden',
				'value' => '',
			),
			'last_name'     => array(
				'type'  => 'hidden',
				'value' => '',
			),
			'address1'      => array(
				'type'  => 'hidden',
				'value' => '',
			),
			'address2'      => array(
				'type'  => 'hidden',
				'value' => '',
			),
			'city'          => array(
				'type'  => 'hidden',
				'value' => '',
			),
			'state'         => array(
				'type'  => 'hidden', // removed if country not US or Canada
				'value' => '',
			),
			'zip'           => array(
				'type'  => 'hidden',
				'value' => '',
			),
			'country'       => array(
				'type'  => 'hidden',
				'value' => '',
			),
			'email'         => array(
				'type'  => 'hidden',
				'value' => '',
			),
			'custom'        => array(
				'type'  => 'hidden',
				'value' => '',
			),
			'notify_url'    => array(
				'type'  => 'hidden',
				'value' => esc_attr ( $notify_url ),
			),
			'item_name'     => array(
				'type'  => 'hidden',
				'value' => esc_attr ( $item_name ),
			),
			'amount'        => array(
				'type'  => 'hidden',
				'value' => '1.00',
			),
			'quantity'      => array(
				'type'  => 'hidden',
				'value' => '1',
			),
			'currency_code' => array(
				'type'  => 'hidden',
				'value' => esc_attr ( $currency_code ),
			),
			'no_note'       => array(
				'type'  => 'hidden',
				'value' => '1',
			),
			'src'           => array(
				'type'  => 'hidden', // removed when not repeating
				'value' => '1',
			),
			'p3'            => array(
				'type'  => 'hidden', // removed when not repeating
				'value' => '',
			),
			't3'            => array(
				'type'  => 'hidden', // removed when not repeating
				'value' => '',
			),
			'a3'            => array(
				'type'  => 'hidden', // removed when not repeating
				'value' => '',
			),
		),
	);

	$paypal_hidden_section = apply_filters (
		'seamless_donations_form_paypal_section', $paypal_hidden_section );

	return $paypal_hidden_section;
}

function seamless_donations_get_submit_section () {

	$processing_image_url      = plugins_url ( '/images/ajax-loader.gif', __FILE__ );
	$button_image_url          = plugins_url ( '/images/paypal_btn_donate_lg.gif', __FILE__ );
	$disabled_button_image_url = plugins_url ( '/images/paypal_btn_donate_lg_disabled.gif', __FILE__ );

	$submit_section = array(
		'id'       => 'dgx-donate-form-payment-section',
		'class'    => 'dgx-donate-form-section',
		'elements' => array(
			'dgx-donate-pay-enabled'  => array(
				'type'   => 'image',
				'class'  => 'dgx-donate-pay-enabled',
				'source' => esc_url ( $button_image_url ),
				'value'  => esc_html__ ( 'Donate Now', 'seamless-donations' ),
			),
			'dgx-donate-pay-disabled' => array(
				'type'   => 'image',
				'class'  => 'dgx-donate-pay-disabled',
				'source' => esc_url ( $disabled_button_image_url ),
			),
			'dgx-donate-busy'         => array(
				'type'   => 'image',
				'class'  => 'dgx-donate-busy',
				'source' => esc_url ( $processing_image_url ),
			),
		),
	);

	$submit_section = apply_filters (
		'seamless_donations_form_submit_section', $submit_section );

	return $submit_section;
}