Add more than 6 bulk discount lines in product

`<?php
/*
Plugin Name: WooCommerce Bulk Discount
Plugin URI: http://wordpress.org/plugins/woocommerce-bulk-discount/
Description: Apply fine-grained bulk discounts to items in the shopping cart.
Author: Rene Puchinger
Version: 2.3.1
Author URI: https://profiles.wordpress.org/rene-puchinger/
License: GPL3

Copyright (C) 2013 Rene Puchinger

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/&gt;.

*/

if ( !defined( ‘ABSPATH’ ) ) exit; // Exit if accessed directly

if ( !in_array( ‘woocommerce/woocommerce.php’, apply_filters( ‘active_plugins’, get_option( ‘active_plugins’ ) ) ) ) return; // Check if WooCommerce is active

if ( !class_exists( ‘Woo_Bulk_Discount_Plugin_t4m’ ) ) {

class Woo_Bulk_Discount_Plugin_t4m {

var $discount_coeffs;
var $bulk_discount_calculated = false;

public function __construct() {

load_plugin_textdomain( ‘wc_bulk_discount’, false, dirname( plugin_basename( __FILE__ ) ) . ‘/lang/’ );

$this->current_tab = ( isset( $_GET[‘tab’] ) ) ? $_GET[‘tab’] : ‘general’;

$this->settings_tabs = array(
‘bulk_discount’ => __( ‘Bulk Discount’, ‘wc_bulk_discount’ )
);

add_action( ‘admin_enqueue_scripts’, array( $this, ‘action_enqueue_dependencies_admin’ ) );
add_action( ‘wp_head’, array( $this, ‘action_enqueue_dependencies’ ) );

add_filter( ‘plugin_action_links_’ . plugin_basename( __FILE__ ), array( $this, ‘action_links’ ) );

add_action( ‘woocommerce_settings_tabs’, array( $this, ‘add_tab’ ), 10 );

// Run these actions when generating the settings tabs.
foreach ( $this->settings_tabs as $name => $label ) {
add_action( ‘woocommerce_settings_tabs_’ . $name, array( $this, ‘settings_tab_action’ ), 10 );
add_action( ‘woocommerce_update_options_’ . $name, array( $this, ‘save_settings’ ), 10 );
}

// Add the settings fields to each tab.
add_action( ‘woocommerce_bulk_discount_settings’, array( $this, ‘add_settings_fields’ ), 10 );

add_action( ‘woocommerce_loaded’, array( $this, ‘woocommerce_loaded’ ) );

}

/**
* Main processing hooks
*/
public function woocommerce_loaded() {

if ( get_option( ‘woocommerce_t4m_enable_bulk_discounts’, ‘yes’ ) == ‘yes’ ) {

add_action( ‘woocommerce_before_calculate_totals’, array( $this, ‘action_before_calculate’ ), 10, 1 );
add_action( ‘woocommerce_calculate_totals’, array( $this, ‘action_after_calculate’ ), 10, 1 );
add_action( ‘woocommerce_before_cart_table’, array( $this, ‘before_cart_table’ ) );
add_action( ‘woocommerce_single_product_summary’, array( $this, ‘single_product_summary’ ), 45 );
add_filter( ‘woocommerce_cart_item_subtotal’, array( $this, ‘filter_subtotal_price’ ), 10, 2 );
add_filter( ‘woocommerce_checkout_item_subtotal’, array( $this, ‘filter_subtotal_price’ ), 10, 2 );
add_filter( ‘woocommerce_order_formatted_line_subtotal’, array( $this, ‘filter_subtotal_order_price’ ), 10, 3 );
add_filter( ‘woocommerce_product_write_panel_tabs’, array( $this, ‘action_product_write_panel_tabs’ ) );
add_filter( ‘woocommerce_product_write_panels’, array( $this, ‘action_product_write_panels’ ) );
add_action( ‘woocommerce_process_product_meta’, array( $this, ‘action_process_meta’ ) );
add_filter( ‘woocommerce_cart_product_subtotal’, array( $this, ‘filter_cart_product_subtotal’ ), 10, 3 );
add_action( ‘woocommerce_checkout_update_order_meta’, array( $this, ‘order_update_meta’ ) );

if ( version_compare( WOOCOMMERCE_VERSION, “2.1.0” ) >= 0 ) {
add_filter( ‘woocommerce_cart_item_price’, array( $this, ‘filter_item_price’ ), 10, 2 );
add_filter( ‘woocommerce_update_cart_validation’, array( $this, ‘filter_before_calculate’ ), 10, 1 );
} else {
add_filter( ‘woocommerce_cart_item_price_html’, array( $this, ‘filter_item_price’ ), 10, 2 );
}

}

}

/**
* Add action links under WordPress > Plugins
*
* @param $links
* @return array
*/
public function action_links( $links ) {

$settings_slug = ‘woocommerce’;

if ( version_compare( WOOCOMMERCE_VERSION, “2.1.0” ) >= 0 ) {

$settings_slug = ‘wc-settings’;

}

$plugin_links = array(
‘<a href=”‘ . admin_url( ‘admin.php?page=’ . $settings_slug . ‘&tab=bulk_discount’ ) . ‘”>’ . __( ‘Settings’, ‘woocommerce’ ) . ‘</a>’,
);

return array_merge( $plugin_links, $links );
}

/**
* For given product, and quantity return the price modifying factor (percentage discount) or value to deduct (flat discount).
*
* @param $product_id
* @param $quantity
* @param $order
* @return float
*/
protected function get_discounted_coeff( $product_id, $quantity ) {

$q = array( 0.0 );
$d = array( 0.0 );

/* Find the appropriate discount coefficient by looping through up to the five discount settings */
for ( $i = 1; $i <= 10; $i++ ) {
array_push( $q, get_post_meta( $product_id, “_bulkdiscount_quantity_$i”, true ) );
if ( get_option( ‘woocommerce_t4m_discount_type’, ” ) == ‘flat’ ) {
array_push( $d, get_post_meta( $product_id, “_bulkdiscount_discount_flat_$i”, true ) ? get_post_meta( $product_id, “_bulkdiscount_discount_flat_$i”, true ) : 0.0 );
} else {
array_push( $d, get_post_meta( $product_id, “_bulkdiscount_discount_$i”, true ) ? get_post_meta( $product_id, “_bulkdiscount_discount_$i”, true ) : 0.0 );
}
if ( $quantity >= $q[$i] && $q[$i] > $q[0] ) {
$q[0] = $q[$i];
$d[0] = $d[$i];
}
}

// for percentage discount convert the resulting discount from % to the multiplying coefficient
return ( get_option( ‘woocommerce_t4m_discount_type’, ” ) == ‘flat’ ) ? max( 0, $d[0] ) : min( 1.0, max( 0, ( 100.0 – round( $d[0], 2 ) ) / 100.0 ) );

}

/**
* Filter product price so that the discount is visible.
*
* @param $price
* @param $values
* @return string
*/
public function filter_item_price( $price, $values ) {

if ( !$values || @!$values[‘data’] ) {
return $price;
}
if ( $this->coupon_check() ) {
return $price;
}
$_product = $values[‘data’];
if ( get_post_meta( $_product->id, “_bulkdiscount_enabled”, true ) != ” && get_post_meta( $_product->id, “_bulkdiscount_enabled”, true ) !== ‘yes’ ) {
return $price;
}
if ( ( get_option( ‘woocommerce_t4m_show_on_item’, ‘yes’ ) == ‘no’ ) ) {
return $price;
}
if ( ( get_option( ‘woocommerce_t4m_discount_type’, ” ) == ‘flat’ ) ) {
return $price; // for flat discount this filter has no meaning
}
if ( empty( $this->discount_coeffs ) || !isset( $this->discount_coeffs[$this->get_actual_id( $_product )] )
|| !isset( $this->discount_coeffs[$this->get_actual_id( $_product )][‘orig_price’] ) || !isset( $this->discount_coeffs[$this->get_actual_id( $_product )][‘coeff’] )
) {
$this->gather_discount_coeffs();
}
$coeff = $this->discount_coeffs[$this->get_actual_id( $_product )][‘coeff’];
if ( $coeff == 1.0 ) {
return $price; // no price modification
}
$discprice = woocommerce_price( $_product->get_price() * $coeff );
$oldprice = woocommerce_price( $this->discount_coeffs[$this->get_actual_id( $_product )][‘orig_price’] );
$old_css = esc_attr( get_option( ‘woocommerce_t4m_css_old_price’, ‘color: #777; text-decoration: line-through; margin-right: 4px;’ ) );
$new_css = esc_attr( get_option( ‘woocommerce_t4m_css_new_price’, ‘color: #4AB915; font-weight: bold;’ ) );
return “<span class=’discount-info’ title='” . sprintf( __( ‘%s%% bulk discount applied!’, ‘wc_bulk_discount’ ), round( ( 1.0 – $coeff ) * 100.0, 2 ) ) . “‘>” .
“<span class=’old-price’ style=’$old_css’>$oldprice</span>” .
“<span class=’new-price’ style=’$new_css’>$discprice</span></span>”;

}

/**
* Filter product price so that the discount is visible.
*
* @param $price
* @param $values
* @return string
*/
public function filter_subtotal_price( $price, $values ) {

if ( !$values || !$values[‘data’] ) {
return $price;
}
if ( $this->coupon_check() ) {
return $price;
}
$_product = $values[‘data’];
if ( get_post_meta( $_product->id, “_bulkdiscount_enabled”, true ) != ” && get_post_meta( $_product->id, “_bulkdiscount_enabled”, true ) !== ‘yes’ ) {
return $price;
}
if ( ( get_option( ‘woocommerce_t4m_show_on_subtotal’, ‘yes’ ) == ‘no’ ) ) {
return $price;
}
if ( empty( $this->discount_coeffs ) || !isset( $this->discount_coeffs[$this->get_actual_id( $_product )] )
|| !isset( $this->discount_coeffs[$this->get_actual_id( $_product )][‘orig_price’] ) || !isset( $this->discount_coeffs[$this->get_actual_id( $_product )][‘coeff’] )
) {
$this->gather_discount_coeffs();
}
$coeff = $this->discount_coeffs[$this->get_actual_id( $_product )][‘coeff’];
if ( ( get_option( ‘woocommerce_t4m_discount_type’, ” ) == ‘flat’ && $coeff == 0 ) || ( get_option( ‘woocommerce_t4m_discount_type’, ” ) == ” && $coeff == 1.0 ) ) {
return $price; // no price modification
}
$new_css = esc_attr( get_option( ‘woocommerce_t4m_css_new_price’, ‘color: #4AB915; font-weight: bold;’ ) );
$bulk_info = sprintf( __( ‘Incl. %s discount’, ‘wc_bulk_discount’ ), ( get_option( ‘woocommerce_t4m_discount_type’, ” ) == ‘flat’ ? get_woocommerce_currency_symbol() . $coeff : ( round( ( 1 – $coeff ) * 100, 2 ) . “%” ) ) );

return “<span class=’discount-info’ title=’$bulk_info’>” .
“<span>$price</span>” .
“<span class=’new-price’ style=’$new_css’> ($bulk_info)</span></span>”;

}

/**
* Gather discount information to the array $this->discount_coefs
*/
protected function gather_discount_coeffs() {

global $woocommerce;

$cart = $woocommerce->cart;
$this->discount_coeffs = array();

if ( sizeof( $cart->cart_contents ) > 0 ) {
foreach ( $cart->cart_contents as $cart_item_key => $values ) {
$_product = $values[‘data’];
$quantity = 0;
if ( get_option( ‘woocommerce_t4m_variations_separate’, ‘yes’ ) == ‘no’ && $_product instanceof WC_Product_Variation && $_product->parent ) {
$parent = $_product->parent;
foreach ( $cart->cart_contents as $valuesInner ) {
$p = $valuesInner[‘data’];
if ( $p instanceof WC_Product_Variation && $p->parent && $p->parent->id == $parent->id ) {
$quantity += $valuesInner[‘quantity’];
$this->discount_coeffs[$_product->variation_id][‘quantity’] = $quantity;
}
}
} else {
$quantity = $values[‘quantity’];
}
$this->discount_coeffs[$this->get_actual_id( $_product )][‘coeff’] = $this->get_discounted_coeff( $_product->id, $quantity );
$this->discount_coeffs[$this->get_actual_id( $_product )][‘orig_price’] = $_product->get_price();
}
}

}

/**
* Filter product price so that the discount is visible during order viewing.
*
* @param $price
* @param $values
* @return string
*/
public function filter_subtotal_order_price( $price, $values, $order ) {

if ( !$values || !$order ) {
return $price;
}
if ( $this->coupon_check() ) {
return $price;
}

$_product = get_product( $values[‘product_id’] );
if ( get_post_meta( $values[‘product_id’], “_bulkdiscount_enabled”, true ) != ” && get_post_meta( $values[‘product_id’], “_bulkdiscount_enabled”, true ) !== ‘yes’ ) {
return $price;
}
if ( ( get_option( ‘woocommerce_t4m_show_on_order_subtotal’, ‘yes’ ) == ‘no’ ) ) {
return $price;
}
$actual_id = $values[‘product_id’];
if ( $_product && $_product instanceof WC_Product_Variable && $values[‘variation_id’] ) {
$actual_id = $values[‘variation_id’];
}
$discount_coeffs = $this->gather_discount_coeffs_from_order( $order->id );
if ( empty( $discount_coeffs ) ) {
return $price;
}
@$coeff = $discount_coeffs[$actual_id][‘coeff’];
if ( !$coeff ) {
return $price;
}
$discount_type = get_post_meta( $order->id, ‘_woocommerce_t4m_discount_type’, true );
if ( ( $discount_type == ‘flat’ && $coeff == 0 ) || ( $discount_type == ” && $coeff == 1.0 ) ) {
return $price; // no price modification
}
$new_css = esc_attr( get_option( ‘woocommerce_t4m_css_new_price’, ‘color: #4AB915; font-weight: bold;’ ) );
$bulk_info = sprintf( __( ‘Incl. %s discount’, ‘wc_bulk_discount’ ), ( $discount_type == ‘flat’ ? get_woocommerce_currency_symbol() . $coeff : ( round( ( 1 – $coeff ) * 100, 2 ) . “%” ) ) );

return “<span class=’discount-info’ title=’$bulk_info’>” .
“<span>$price</span>” .
“<span class=’new-price’ style=’$new_css’> ($bulk_info)</span></span>”;

}

/**
* Gather discount information from order.
*
* @param $order_id
* @return array
*/
protected function gather_discount_coeffs_from_order( $order_id ) {

$meta = get_post_meta( $order_id, ‘_woocommerce_t4m_discount_coeffs’, true );

if ( !$meta ) {
return null;
}

$order_discount_coeffs = json_decode( $meta, true );
return $order_discount_coeffs;

}

/**
* Hook to woocommerce_before_calculate_totals action.
*
* @param WC_Cart $cart
*/
public function action_before_calculate( WC_Cart $cart ) {

if ( $this->coupon_check() ) {
return;
}

if ($this->bulk_discount_calculated) {
return;
}

$this->gather_discount_coeffs();

if ( sizeof( $cart->cart_contents ) > 0 ) {

foreach ( $cart->cart_contents as $cart_item_key => $values ) {
$_product = $values[‘data’];
if ( get_post_meta( $_product->id, “_bulkdiscount_enabled”, true ) != ” && get_post_meta( $_product->id, “_bulkdiscount_enabled”, true ) !== ‘yes’ ) {
continue;
}
if ( ( get_option( ‘woocommerce_t4m_discount_type’, ” ) == ‘flat’ ) ) {
$row_base_price = max( 0, $_product->get_price() – ( $this->discount_coeffs[$this->get_actual_id( $_product )][‘coeff’] / $values[‘quantity’] ) );
} else {
$row_base_price = $_product->get_price() * $this->discount_coeffs[$this->get_actual_id( $_product )][‘coeff’];
}

$values[‘data’]->set_price( $row_base_price );
}

$this->bulk_discount_calculated = true;

}

}

public function filter_before_calculate( $res ) {

global $woocommerce;

if ($this->bulk_discount_calculated) {
return $res;
}

$cart = $woocommerce->cart;

if ( $this->coupon_check() ) {
return $res;
}

$this->gather_discount_coeffs();

if ( sizeof( $cart->cart_contents ) > 0 ) {

foreach ( $cart->cart_contents as $cart_item_key => $values ) {
$_product = $values[‘data’];
if ( get_post_meta( $_product->id, “_bulkdiscount_enabled”, true ) != ” && get_post_meta( $_product->id, “_bulkdiscount_enabled”, true ) !== ‘yes’ ) {
continue;
}
if ( ( get_option( ‘woocommerce_t4m_discount_type’, ” ) == ‘flat’ ) ) {
$row_base_price = max( 0, $_product->get_price() – ( $this->discount_coeffs[$this->get_actual_id( $_product )][‘coeff’] / $values[‘quantity’] ) );
} else {
$row_base_price = $_product->get_price() * $this->discount_coeffs[$this->get_actual_id( $_product )][‘coeff’];
}

$values[‘data’]->set_price( $row_base_price );
}

$this->bulk_discount_calculated = true;

}

return $res;

}

/**
* @param $product
* @return int
*/
protected function get_actual_id( $product ) {

if ( $product instanceof WC_Product_Variation ) {
return $product->variation_id;
} else {
return $product->id;
}

}

/**
* Hook to woocommerce_calculate_totals.
*
* @param WC_Cart $cart
*/
public function action_after_calculate( WC_Cart $cart ) {

if ( $this->coupon_check() ) {
return;
}

if ( sizeof( $cart->cart_contents ) > 0 ) {
foreach ( $cart->cart_contents as $cart_item_key => $values ) {
$_product = $values[‘data’];
if ( get_post_meta( $_product->id, “_bulkdiscount_enabled”, true ) != ” && get_post_meta( $_product->id, “_bulkdiscount_enabled”, true ) !== ‘yes’ ) {
continue;
}
$values[‘data’]->set_price( $this->discount_coeffs[$this->get_actual_id( $_product )][‘orig_price’] );
}
}

}

/**
* Show discount info in cart.
*/
public function before_cart_table() {

if ( get_option( ‘woocommerce_t4m_cart_info’ ) != ” ) {
echo “<div class=’cart-show-discounts’>”;
echo get_option( ‘woocommerce_t4m_cart_info’ );
echo “</div>”;
}

}

/**
* Hook to woocommerce_cart_product_subtotal filter.
*
* @param $subtotal
* @param $_product
* @param $quantity
* @param WC_Cart $cart
* @return string
*/
public function filter_cart_product_subtotal( $subtotal, $_product, $quantity ) {

if ( !$_product || !$quantity ) {
return $subtotal;
}
if ( $this->coupon_check() ) {
return $subtotal;
}
if ( get_post_meta( $_product->id, “_bulkdiscount_enabled”, true ) != ” && get_post_meta( $_product->id, “_bulkdiscount_enabled”, true ) !== ‘yes’ ) {
return $subtotal;
}

$coeff = $this->discount_coeffs[$this->get_actual_id( $_product )][‘coeff’];
if ( ( get_option( ‘woocommerce_t4m_discount_type’, ” ) == ‘flat’ ) ) {
$newsubtotal = woocommerce_price( max( 0, ( $_product->get_price() * $quantity ) – $coeff ) );
} else {
$newsubtotal = woocommerce_price( $_product->get_price() * $quantity * $coeff );
}

return $newsubtotal;

}

/**
* Store discount info in order as well
*
* @param $order_id
*/
public function order_update_meta( $order_id ) {

update_post_meta( $order_id, “_woocommerce_t4m_discount_type”, get_option( ‘woocommerce_t4m_discount_type’, ” ) );
update_post_meta( $order_id, “_woocommerce_t4m_discount_coeffs”, json_encode( $this->discount_coeffs ) );

}

/**
* Display discount information in Product Detail.
*/
public function single_product_summary() {

global $thepostid, $post;
if ( !$thepostid ) $thepostid = $post->ID;

echo “<div class=’productinfo-show-discounts’>”;
echo get_post_meta( $thepostid, ‘_bulkdiscount_text_info’, true );
echo “</div>”;

}

/**
* Add entry to Product Settings.
*/
public function action_product_write_panel_tabs() {

$style = ”;

if ( version_compare( WOOCOMMERCE_VERSION, “2.1.0” ) >= 0 ) {
$style = ‘style = “padding: 10px !important”‘;
}

echo ‘<li class=”bulkdiscount_tab bulkdiscount_options”><a href=”#bulkdiscount_product_data” ‘.$style.’>’ . __( ‘Bulk Discount’, ‘wc_bulk_discount’ ) . ‘</a></li>’;

}

/**
* Add entry content to Product Settings.
*/
public function action_product_write_panels() {

global $thepostid, $post;

if ( !$thepostid ) $thepostid = $post->ID;
?>
<script type=”text/javascript”>
jQuery( document ).ready( function () {
var e = jQuery( ‘#bulkdiscount_product_data’ );
<?php
for($i = 1; $i <= 11; $i++) :
?>
e.find( ‘.block<?php echo $i; ?>’ ).hide();
e.find( ‘.options_group<?php echo max($i, 2); ?>’ ).hide();
e.find( ‘#add_discount_line<?php echo max($i, 2); ?>’ ).hide();
e.find( ‘#add_discount_line<?php echo $i; ?>’ ).click( function () {
if ( <?php echo $i; ?> == 1 || ( e.find( ‘#_bulkdiscount_quantity_<?php echo max($i-1, 1); ?>’ ).val() != ” &&
<?php if ( get_option( ‘woocommerce_t4m_discount_type’, ” ) == ‘flat’ ) : ?>
e.find( ‘#_bulkdiscount_discount_flat_<?php echo max($i-1, 1); ?>’ ).val() != ”
<?php else: ?>
e.find( ‘#_bulkdiscount_discount_<?php echo max($i-1, 1); ?>’ ).val() != ”
<?php endif; ?>
) )
{
e.find( ‘.block<?php echo $i; ?>’ ).show( 400 );
e.find( ‘.options_group<?php echo min($i+1, 11); ?>’ ).show( 400 );
e.find( ‘#add_discount_line<?php echo min($i+1, 10); ?>’ ).show( 400 );
e.find( ‘#add_discount_line<?php echo $i; ?>’ ).hide( 400 );
e.find( ‘#delete_discount_line<?php echo min($i+1, 11); ?>’ ).show( 400 );
e.find( ‘#delete_discount_line<?php echo $i; ?>’ ).hide( 400 );
}
else
{
alert( ‘<?php _e( ‘Please fill in the current line before adding new line.’, ‘wc_bulk_discount’ ); ?>’ );
}
} );
e.find( ‘#delete_discount_line<?php echo max($i, 1); ?>’ ).hide();
e.find( ‘#delete_discount_line<?php echo $i; ?>’ ).click( function () {
e.find( ‘.block<?php echo max($i-1, 1); ?>’ ).hide( 400 );
e.find( ‘.options_group<?php echo min($i, 11); ?>’ ).hide( 400 );
e.find( ‘#add_discount_line<?php echo min($i, 10); ?>’ ).hide( 400 );
e.find( ‘#add_discount_line<?php echo max($i-1, 1); ?>’ ).show( 400 );
e.find( ‘#delete_discount_line<?php echo min($i, 11); ?>’ ).hide( 400 );
e.find( ‘#delete_discount_line<?php echo max($i-1, 2); ?>’ ).show( 400 );
e.find( ‘#_bulkdiscount_quantity_<?php echo max($i-1, 1); ?>’ ).val( ” );
<?php
if ( get_option( ‘woocommerce_t4m_discount_type’, ” ) == ‘flat’ ) :
?>
e.find( ‘#_bulkdiscount_discount_flat_<?php echo max($i-1, 1); ?>’ ).val( ” );
<?php else: ?>
e.find( ‘#_bulkdiscount_discount_<?php echo max($i-1, 1); ?>’ ).val( ” );
<?php endif; ?>
} );
<?php
endfor;
for ($i = 1, $j = 2; $i <= 10; $i++, $j++) {
$cnt = 1;
if (get_post_meta($thepostid, “_bulkdiscount_quantity_$i”, true) || get_post_meta($thepostid, “_bulkdiscount_quantity_$j”, true)) {
?>
e.find( ‘.block<?php echo $i; ?>’ ).show();
e.find( ‘.options_group<?php echo $i; ?>’ ).show();
e.find( ‘#add_discount_line<?php echo $i; ?>’ ).hide();
e.find( ‘#delete_discount_line<?php echo $i; ?>’ ).hide();
e.find( ‘.options_group<?php echo min($i+1,11); ?>’ ).show();
e.find( ‘#add_discount_line<?php echo min($i+1,11); ?>’ ).show();
e.find( ‘#delete_discount_line<?php echo min($i+1,11); ?>’ ).show();
<?php
$cnt++;
}
}
if ($cnt >= 11) {
?>e.find( ‘#add_discount_line11’ ).show();
<?php
}
?>
} );
</script>

<div id=”bulkdiscount_product_data” class=”panel woocommerce_options_panel”>

<div class=”options_group”>
<?php
woocommerce_wp_checkbox( array( ‘id’ => ‘_bulkdiscount_enabled’, ‘value’ => get_post_meta( $thepostid, ‘_bulkdiscount_enabled’, true ) ? get_post_meta( $thepostid, ‘_bulkdiscount_enabled’, true ) : ‘yes’, ‘label’ => __( ‘Bulk Discount enabled’, ‘wc_bulk_discount’ ) ) );
woocommerce_wp_textarea_input( array( ‘id’ => “_bulkdiscount_text_info”, ‘label’ => __( ‘Bulk discount special offer text in product description’, ‘wc_bulk_discount’ ), ‘description’ => __( ‘Optionally enter bulk discount information that will be visible on the product page.’, ‘wc_bulk_discount’ ), ‘desc_tip’ => ‘yes’, ‘class’ => ‘fullWidth’ ) );
?>
</div>

<?php
for ( $i = 1;
$i <= 10;
$i++ ) :
?>

<div class=”options_group<?php echo $i; ?>”>
<a id=”add_discount_line<?php echo $i; ?>” class=”button-secondary”
href=”#block<?php echo $i; ?>”><?php _e( ‘Add discount line’, ‘wc_bulk_discount’ ); ?></a>
<a id=”delete_discount_line<?php echo $i; ?>” class=”button-secondary”
href=”#block<?php echo $i; ?>”><?php _e( ‘Remove last discount line’, ‘wc_bulk_discount’ ); ?></a>

<div class=”block<?php echo $i; ?> <?php echo ( $i % 2 == 0 ) ? ‘even’ : ‘odd’ ?>”>
<?php
woocommerce_wp_text_input( array( ‘id’ => “_bulkdiscount_quantity_$i”, ‘label’ => __( ‘Quantity (min.)’, ‘wc_bulk_discount’ ), ‘type’ => ‘number’, ‘description’ => __( ‘Enter the minimal quantity for which the discount applies.’, ‘wc_bulk_discount’ ), ‘custom_attributes’ => array(
‘step’ => ‘1’,
‘min’ => ‘1’
) ) );
if ( get_option( ‘woocommerce_t4m_discount_type’, ” ) == ‘flat’ ) {
woocommerce_wp_text_input( array( ‘id’ => “_bulkdiscount_discount_flat_$i”, ‘type’ => ‘number’, ‘label’ => sprintf( __( ‘Discount (%s)’, ‘wc_bulk_discount’ ), get_woocommerce_currency_symbol() ), ‘description’ => sprintf( __( ‘Enter the flat discount in %s.’, ‘wc_bulk_discount’ ), get_woocommerce_currency_symbol() ), ‘custom_attributes’ => array(
‘step’ => ‘any’,
‘min’ => ‘0’
) ) );
} else {
woocommerce_wp_text_input( array( ‘id’ => “_bulkdiscount_discount_$i”, ‘type’ => ‘number’, ‘label’ => __( ‘Discount (%)’, ‘wc_bulk_discount’ ), ‘description’ => __( ‘Enter the discount in percents (Allowed values: 0 to 100).’, ‘wc_bulk_discount’ ), ‘custom_attributes’ => array(
‘step’ => ‘any’,
‘min’ => ‘0’,
‘max’ => ‘100’
) ) );
}
?>
</div>
</div>

<?php
endfor;
?>

<div class=”options_group11″>
<a id=”delete_discount_line11″ class=”button-secondary”
href=”#block11″><?php _e( ‘Remove last discount line’, ‘wc_bulk_discount’ ); ?></a>
</div>

<br/>

</div>

<?php
}

/**
* Enqueue frontend dependencies.
*/
public function action_enqueue_dependencies() {

wp_register_style( ‘woocommercebulkdiscount-style’, plugins_url( ‘css/style.css’, __FILE__ ) );
wp_enqueue_style( ‘woocommercebulkdiscount-style’ );
wp_enqueue_script( ‘jquery’ );

}

/**
* Enqueue backend dependencies.
*/
public function action_enqueue_dependencies_admin() {

wp_register_style( ‘woocommercebulkdiscount-style-admin’, plugins_url( ‘css/admin.css’, __FILE__ ) );
wp_enqueue_style( ‘woocommercebulkdiscount-style-admin’ );
wp_enqueue_script( ‘jquery’ );

}

/**
* Updating post meta.
*
* @param $post_id
*/
public function action_process_meta( $post_id ) {

if ( isset( $_POST[‘_bulkdiscount_text_info’] ) ) update_post_meta( $post_id, ‘_bulkdiscount_text_info’, stripslashes( $_POST[‘_bulkdiscount_text_info’] ) );

if ( isset( $_POST[‘_bulkdiscount_enabled’] ) && $_POST[‘_bulkdiscount_enabled’] == ‘yes’ ) {
update_post_meta( $post_id, ‘_bulkdiscount_enabled’, stripslashes( $_POST[‘_bulkdiscount_enabled’] ) );
} else {
update_post_meta( $post_id, ‘_bulkdiscount_enabled’, stripslashes( ‘no’ ) );
}

for ( $i = 1; $i <= 10; $i++ ) {
if ( isset( $_POST[“_bulkdiscount_quantity_$i”] ) ) update_post_meta( $post_id, “_bulkdiscount_quantity_$i”, stripslashes( $_POST[“_bulkdiscount_quantity_$i”] ) );
if ( ( get_option( ‘woocommerce_t4m_discount_type’, ” ) == ‘flat’ ) ) {
if ( isset( $_POST[“_bulkdiscount_discount_flat_$i”] ) ) update_post_meta( $post_id, “_bulkdiscount_discount_flat_$i”, stripslashes( $_POST[“_bulkdiscount_discount_flat_$i”] ) );
} else {
if ( isset( $_POST[“_bulkdiscount_discount_$i”] ) ) update_post_meta( $post_id, “_bulkdiscount_discount_$i”, stripslashes( $_POST[“_bulkdiscount_discount_$i”] ) );
}
}

}

/**
* @access public
* @return void
*/
public function add_tab() {

$settings_slug = ‘woocommerce’;

if ( version_compare( WOOCOMMERCE_VERSION, “2.1.0” ) >= 0 ) {

$settings_slug = ‘wc-settings’;

}

foreach ( $this->settings_tabs as $name => $label ) {
$class = ‘nav-tab’;
if ( $this->current_tab == $name )
$class .= ‘ nav-tab-active’;
echo ‘<a href=”‘ . admin_url( ‘admin.php?page=’ . $settings_slug . ‘&tab=’ . $name ) . ‘” class=”‘ . $class . ‘”>’ . $label . ‘</a>’;
}

}

/**
* @access public
* @return void
*/
public function settings_tab_action() {

global $woocommerce_settings;

// Determine the current tab in effect.
$current_tab = $this->get_tab_in_view( current_filter(), ‘woocommerce_settings_tabs_’ );

do_action( ‘woocommerce_bulk_discount_settings’ );

// Display settings for this tab (make sure to add the settings to the tab).
woocommerce_admin_fields( $woocommerce_settings[$current_tab] );

}

/**
* Save settings in a single field in the database for each tab’s fields (one field per tab).
*/
public function save_settings() {

global $woocommerce_settings;

// Make sure our settings fields are recognised.
$this->add_settings_fields();

$current_tab = $this->get_tab_in_view( current_filter(), ‘woocommerce_update_options_’ );
woocommerce_update_options( $woocommerce_settings[$current_tab] );

}

/**
* Get the tab current in view/processing.
*/
public function get_tab_in_view( $current_filter, $filter_base ) {

return str_replace( $filter_base, ”, $current_filter );

}

/**
* Add settings fields for each tab.
*/
public function add_settings_fields() {
global $woocommerce_settings;

// Load the prepared form fields.
$this->init_form_fields();

if ( is_array( $this->fields ) )
foreach ( $this->fields as $k => $v )
$woocommerce_settings[$k] = $v;
}

/**
* Prepare form fields to be used in the various tabs.
*/
public function init_form_fields() {
global $woocommerce;

// Define settings
$this->fields[‘bulk_discount’] = apply_filters( ‘woocommerce_bulk_discount_settings_fields’, array(

array( ‘name’ => __( ‘Bulk Discount’, ‘wc_bulk_discount’ ), ‘type’ => ‘title’, ‘desc’ => __( ‘The following options are specific to product bulk discount.’, ‘wc_bulk_discount’ ) . ‘<br /><br/><strong><i>’ . __( ‘After changing the settings, it is recommended to clear all sessions in WooCommerce > System Status > Tools.’, ‘wc_bulk_discount’ ) . ‘</i></strong>’, ‘id’ => ‘t4m_bulk_discounts_options’ ),

array(
‘name’ => __( ‘Bulk Discount globally enabled’, ‘wc_bulk_discount’ ),
‘id’ => ‘woocommerce_t4m_enable_bulk_discounts’,
‘desc’ => __( ”, ‘wc_bulk_discount’ ),
‘std’ => ‘yes’,
‘type’ => ‘checkbox’,
‘default’ => ‘yes’
),

array(
‘title’ => __( ‘Discount Type’, ‘wc_bulk_discount’ ),
‘id’ => ‘woocommerce_t4m_discount_type’,
‘desc’ => sprintf( __( ‘Select the type of discount. Percentage Discount deducts amount of %% from price while Flat Discount deducts fixed amount in %s’, ‘wc_bulk_discount’ ), get_woocommerce_currency_symbol() ),
‘desc_tip’ => true,
‘std’ => ‘yes’,
‘type’ => ‘select’,
‘css’ => ‘min-width:200px;’,
‘class’ => ‘chosen_select’,
‘options’ => array(
” => __( ‘Percentage Discount’, ‘wc_bulk_discount’ ),
‘flat’ => __( ‘Flat Discount’, ‘wc_bulk_discount’ )
)
),

array(
‘name’ => __( ‘Treat product variations separately’, ‘wc_bulk_discount’ ),
‘id’ => ‘woocommerce_t4m_variations_separate’,
‘desc’ => __( ‘You need to have this option unchecked to apply discounts to variations by shared quantity.’, ‘wc_bulk_discount’ ),
‘std’ => ‘yes’,
‘type’ => ‘checkbox’,
‘default’ => ‘yes’
),

array(
‘name’ => __( ‘Remove any bulk discounts if a coupon code is applied’, ‘wc_bulk_discount’ ),
‘id’ => ‘woocommerce_t4m_remove_discount_on_coupon’,
‘std’ => ‘yes’,
‘type’ => ‘checkbox’,
‘default’ => ‘yes’
),

array(
‘name’ => __( ‘Show discount information next to cart item price’, ‘wc_bulk_discount’ ),
‘id’ => ‘woocommerce_t4m_show_on_item’,
‘desc’ => __( ‘Applies only to percentage discount.’, ‘wc_bulk_discount’ ),
‘std’ => ‘yes’,
‘type’ => ‘checkbox’,
‘default’ => ‘yes’
),

array(
‘name’ => __( ‘Show discount information next to item subtotal price’, ‘wc_bulk_discount’ ),
‘id’ => ‘woocommerce_t4m_show_on_subtotal’,
‘std’ => ‘yes’,
‘type’ => ‘checkbox’,
‘default’ => ‘yes’
),

array(
‘name’ => __( ‘Show discount information next to item subtotal price in order history’, ‘wc_bulk_discount’ ),
‘id’ => ‘woocommerce_t4m_show_on_order_subtotal’,
‘desc’ => __( ‘Includes showing discount in order e-mails and invoices.’, ‘wc_bulk_discount’ ),
‘std’ => ‘yes’,
‘type’ => ‘checkbox’,
‘default’ => ‘yes’
),

array(
‘name’ => __( ‘Optionally enter information about discounts visible on cart page.’, ‘wc_bulk_discount’ ),
‘id’ => ‘woocommerce_t4m_cart_info’,
‘type’ => ‘textarea’,
‘css’ => ‘width:100%; height: 75px;’
),

array(
‘name’ => __( ‘Optionally change the CSS for old price on cart before discounting.’, ‘wc_bulk_discount’ ),
‘id’ => ‘woocommerce_t4m_css_old_price’,
‘type’ => ‘textarea’,
‘css’ => ‘width:100%;’,
‘default’ => ‘color: #777; text-decoration: line-through; margin-right: 4px;’
),

array(
‘name’ => __( ‘Optionally change the CSS for new price on cart after discounting.’, ‘wc_bulk_discount’ ),
‘id’ => ‘woocommerce_t4m_css_new_price’,
‘type’ => ‘textarea’,
‘css’ => ‘width:100%;’,
‘default’ => ‘color: #4AB915; font-weight: bold;’
),

array( ‘type’ => ‘sectionend’, ‘id’ => ‘t4m_bulk_discounts_options’ ),

array(
‘desc’ => ‘If you find the WooCommerce Bulk Discount extension useful, please rate it <a target=”_blank” href=”http://wordpress.org/support/view/plugin-reviews/woocommerce-bulk-discount#postform”>★★★★★</a&gt;.’,
‘id’ => ‘woocommerce_t4m_bulk_discount_notice_text’,
‘type’ => ‘title’
),

array( ‘type’ => ‘sectionend’, ‘id’ => ‘woocommerce_t4m_bulk_discount_notice_text’ )

) ); // End settings

$js = “
jQuery(‘#woocommerce_t4m_enable_bulk_discounts’).change(function() {

jQuery(‘#woocommerce_t4m_cart_info, #woocommerce_t4m_variations_separate, #woocommerce_t4m_discount_type, #woocommerce_t4m_css_old_price, #woocommerce_t4m_css_new_price, #woocommerce_t4m_show_on_item, #woocommerce_t4m_show_on_subtotal, #woocommerce_t4m_show_on_order_subtotal’).closest(‘tr’).hide();

if ( jQuery(this).attr(‘checked’) ) {
jQuery(‘#woocommerce_t4m_cart_info’).closest(‘tr’).show();
jQuery(‘#woocommerce_t4m_variations_separate’).closest(‘tr’).show();
jQuery(‘#woocommerce_t4m_discount_type’).closest(‘tr’).show();
jQuery(‘#woocommerce_t4m_css_old_price’).closest(‘tr’).show();
jQuery(‘#woocommerce_t4m_css_new_price’).closest(‘tr’).show();
jQuery(‘#woocommerce_t4m_show_on_item’).closest(‘tr’).show();
jQuery(‘#woocommerce_t4m_show_on_subtotal’).closest(‘tr’).show();
jQuery(‘#woocommerce_t4m_show_on_order_subtotal’).closest(‘tr’).show();
}

}).change();

“;

$this->run_js( $js );

}

/**
* Includes inline JavaScript.
*
* @param $js
*/
protected function run_js( $js ) {

global $woocommerce;

if ( function_exists( ‘wc_enqueue_js’ ) ) {
wc_enqueue_js( $js );
} else {
$woocommerce->add_inline_js( $js );
}

}

/**
* @return bool
*/
protected function coupon_check() {

global $woocommerce;

if ( get_option( ‘woocommerce_t4m_remove_discount_on_coupon’, ‘yes’ ) == ‘no’ ) return false;
return !( empty( $woocommerce->cart->applied_coupons ) );
}

}

new Woo_Bulk_Discount_Plugin_t4m();

}