mycred-woo-coupon-with-amount

/**
 * Convert myCRED Points into WooCommerce Coupon
 * @version 1.2
 */
add_shortcode( 'mycred_to_woo_coupon', 'mycred_pro_render_points_to_coupon' );
function mycred_pro_render_points_to_coupon( $atts, $content = NULL ) {
	// Users must be logged in
	if ( ! is_user_logged_in() )
		return 'You must be logged in to generate store coupons.';

	// myCRED must be enabled
	if ( ! function_exists( 'mycred_get_settings' ) )
		return 'myCRED must be enabled to use this shortcode';

	extract( shortcode_atts( array(
		'exchange'     => 1,
		'amount'       => 0,
		'type'         => 'mycred_default',
		'button_label' => 'Create Coupon'
	), $atts ) );

	// Load myCRED
	$mycred = mycred( $type );

	// Prep
	$error = $code = false;
	$output = '';
	$user_id = get_current_user_id();

	// No need to show this for excluded users
	if ( $mycred->exclude_user( $user_id ) ) return;

	$balance = $mycred->get_users_balance( $user_id );

	// Form submission
	if ( isset( $_POST['mycred_to_woo'] ) && wp_verify_nonce( $_POST['mycred_to_woo']['token'], 'points-to-woo-coupon' ) ) {

		// Make sure amounts are always positive
		if ( $amount == 0 )
			$amount = abs( $_POST['mycred_to_woo']['amount'] );

		// Exchange rate
		$value = $mycred->number( $amount*$exchange );

		// Make sure amount is not zero
		if ( $amount == $mycred->zero() )
			$error = 'Amount can not be zero';

		// Make sure user has enough points
		if ( $amount > $balance )
			$error = 'Insufficient Funds. Please try a lower amount';

		// If no errors
		if ( $error === false ) {

			// Create Woo Coupon
			$code = wp_generate_password( 12, false, false );
			$new_coupon_id = wp_insert_post( array(
				'post_title'   => $code,
				'post_content' => '',
				'post_status'  => 'publish',
				'post_author'  => 1,
				'post_type'    => 'shop_coupon'
			) );

			// Deduct points from user
			$mycred->add_creds(
				'points_to_coupon',
				$user_id,
				0-$amount,
				'%plural% conversion into store coupon: %post_title%',
				$new_coupon_id,
				array( 'ref_type' => 'post', 'code' => $code ),
				$type
			);

			$balance = $balance-$amount;
			$balance = $mycred->number( $balance );

			// Update Coupon details
			update_post_meta( $new_coupon_id, 'discount_type', 'fixed_cart' );
			update_post_meta( $new_coupon_id, 'coupon_amount', $value );
			update_post_meta( $new_coupon_id, 'individual_use', 'no' );
			update_post_meta( $new_coupon_id, 'product_ids', '' );
			update_post_meta( $new_coupon_id, 'exclude_product_ids', '' );

			// Make sure you set usage_limit to 1 to prevent duplicate usage!!!
			update_post_meta( $new_coupon_id, 'usage_limit', 1 );
			update_post_meta( $new_coupon_id, 'usage_limit_per_user', 1 );
			update_post_meta( $new_coupon_id, 'limit_usage_to_x_items', '' );
			update_post_meta( $new_coupon_id, 'usage_count', '' );
			update_post_meta( $new_coupon_id, 'expiry_date', '' );
			update_post_meta( $new_coupon_id, 'apply_before_tax', 'yes' );
			update_post_meta( $new_coupon_id, 'free_shipping', 'no' );
			update_post_meta( $new_coupon_id, 'product_categories', array() );
			update_post_meta( $new_coupon_id, 'exclude_product_categories', array() );
			update_post_meta( $new_coupon_id, 'exclude_sale_items', 'no' );
			update_post_meta( $new_coupon_id, 'minimum_amount', '' );
			update_post_meta( $new_coupon_id, 'customer_email', array() );
		}

	}

	// Show users current balance
	$output .= '
<p>Your current balance is: ' . $mycred->format_creds( $balance ) . '</p>';

	// Error
	if ( $error !== false )
		$output .= '<p style="color:red;">' . $error . '</p>';

	// Success
	elseif ( $code !== false )
		$output .= '<p>Your coupon code is: <strong>' . $code . '</strong></p>';

	// The form for those who have points
	if ( $balance > $mycred->zero() ) {
		$output .= '
<form action="" method="post">
	<input type="hidden" name="mycred_to_woo[token]" value="' . wp_create_nonce( 'points-to-woo-coupon' ) . '" />';

		// If shortcode is not set to use a specific amount
		// we insert the amount field so one can be nominated
		if ( $amount != 0 )
			$output .= '
	<label>Amount</label>
	<input type="text" size="5" name="mycred_to_woo[amount]" value="" />';

		$output .= '
	<input type="submit" name="submit" value="' . $button_label . '" />
</form>';

	}
	// Not enough points
	else
		$output .= '<p>Not enough points to create coupons.</p>';

	return $output;
}