Boost Sales with Dynamic Pricing Strategy with Progressive Discounts in WooCommerce – No Plugin

// Hook to apply progressive discount based on cart quantity

add_action('woocommerce_cart_calculate_fees', 'progressive_discount', 20, 1);

function progressive_discount($cart) {

    // Check if the action is not triggered in the admin and not during AJAX

    if (is_admin() && !defined('DOING_AJAX'))

        return;

    // Define progressive discount tiers

$discount_tiers = array(

    // First discount tier

    array(

        'quantity' => 10,              // The quantity at which this tier applies

        'discount_rate' => 0.02,       // The discount rate for this tier (2%)

        'label' => 'Progressive Discount'  // Label for the discount

    ),

    // Second discount tier

    array(

        'quantity' => 20,              // The quantity at which this tier applies

        'discount_rate' => 0.03,       // The discount rate for this tier (3%)

        'label' => 'Additional Progressive discount 1'  // Label for the discount

    ),

    // Third discount tier

    array(

        'quantity' => 50,              // The quantity at which this tier applies

        'discount_rate' => 0.04,       // The discount rate for this tier (4%)

        'label' => 'Additional Progressive Discount 2'  // Label for the discount

    ),

);

    // Initialize total and discounted quantities

    $total_quantity = 0;

    $discounted_quantity = 0;

    // Loop through cart items

    foreach ($cart->get_cart() as $cart_item_key => $cart_item) {

        $product_id = $cart_item['product_id'];

        $quantity = $cart_item['quantity'];

        $enable_discount = get_post_meta($product_id, 'progressive_offer', true);

        // Check if progressive offer is enabled for the product

        if ($enable_discount === 'yes') {

            $total_quantity += $quantity;

            // Determine the applicable discount amount based on the tiers

            $discount_amount = 0;

            $previous_tier_quantity = 0;

            $current_discount_label = '';

            // Loop through discount tiers

            foreach ($discount_tiers as $discount_tier) {

                if ($total_quantity >= $discount_tier['quantity']) {

                    // Calculate the discount for this tier

                    $tier_discount_amount = ($total_quantity - max($previous_tier_quantity, $discount_tier['quantity'])) * $cart->subtotal * $discount_tier['discount_rate'] / $cart->cart_contents_count;

                    // Add the tier discount amount to the total discount amount

                    $discount_amount += $tier_discount_amount;

                    // Update the previous tier quantity

                    $previous_tier_quantity = $discount_tier['quantity'];

                    // Update the current discount label

                    $current_discount_label = $discount_tier['label'];

                } else {

                    break;

                }

            }

        }

    }

    // Apply the discount as a fee to the cart if the discount amount is greater than 0

    if ($discount_amount > 0) {

        $cart->add_fee($current_discount_label, -$discount_amount);

    }

}

// Hook to add the progressive offer checkbox to product options

add_action('woocommerce_product_options_general_product_data', 'add_progressive_offer_checkbox');

function add_progressive_offer_checkbox() {

    global $post;

    woocommerce_wp_checkbox(

        array(

            'id' => 'progressive_offer',

            'label' => __('Enable Progressive Offer', 'woocommerce'),

            'description' => __('Check this box if you want this product to be eligible for the progressive offer.', 'woocommerce'),

            'value' => get_post_meta($post->ID, 'progressive_offer', true),

        )

    );

}

// Hook to save the value of the progressive offer checkbox when product is saved

add_action('woocommerce_process_product_meta', 'save_progressive_offer_checkbox');

function save_progressive_offer_checkbox($post_id) {

    // Save the value of the progressive offer checkbox

    $progressive_offer = isset($_POST['progressive_offer']) ? 'yes' : 'no';

    update_post_meta($post_id, 'progressive_offer', $progressive_offer);

}

// Hook to display a notice for products eligible for the progressive offer

add_action('woocommerce_after_add_to_cart_button', 'add_progressive_offer_notice');

function add_progressive_offer_notice() {

    global $post;

    // Check if the progressive offer is enabled for this product

    $enable_discount = get_post_meta($post->ID, 'progressive_offer', true);

    if ($enable_discount === 'yes') {

        // Display a message indicating that this product is eligible for the progressive offer

        echo '<div class="woocommerce-message">' . __('This product is eligible for the progressive offer!', 'woocommerce') . '</div>';

        // Define progressive discount tiers

      $discount_tiers = array(

    // First discount tier

    array(

        'quantity' => 10,              // The quantity at which this tier applies

        'discount_rate' => 0.02,       // The discount rate for this tier (2%)

        'label' => 'Progressive Discount'  // Label for the discount

    ),

    // Second discount tier

    array(

        'quantity' => 20,              // The quantity at which this tier applies

        'discount_rate' => 0.03,       // The discount rate for this tier (3%)

        'label' => 'Additional Progressive discount 1'  // Label for the discount

    ),

    // Third discount tier

    array(

        'quantity' => 50,              // The quantity at which this tier applies

        'discount_rate' => 0.04,       // The discount rate for this tier (4%)

        'label' => 'Additional Progressive Discount 2'  // Label for the discount

    ),

);

// Hook to enqueue custom CSS for styling the progressive offer message

add_action('wp_enqueue_scripts', 'add_custom_css');

function add_custom_css() {

    // Add custom CSS to style the progressive offer message

    $custom_css = "

        .woocommerce-message {

            clear: both;

            margin-top: 1em;

            background-color: white;

        }

    ";

    wp_add_inline_style('woocommerce-general', $custom_css);

}