<?php

if (!defined('ABSPATH')) {
    exit; // Exit if accessed directly
}

include 'valid-rules-class/valid-rules.php';
include 'calculation-handler.php';

$GLOBALS['woocommerce_get_price_hook_name'] = 'woocommerce_get_price';
if (is_wc_version_gt_eql('2.7.0') == true) {
    $GLOBALS['woocommerce_get_price_hook_name'] = 'woocommerce_product_get_price';
}
$GLOBALS['woocommerce_get_sale_price_hook_name'] = 'woocommerce_get_sale_price';
if (is_wc_version_gt_eql('2.7') == true) {
    $GLOBALS['woocommerce_get_sale_price_hook_name'] = 'woocommerce_product_get_sale_price';
}

function eh_speedup_shop_page() {
    if (is_shop() && isset($GLOBALS['settings']['disable_shop_page_calculation']) && $GLOBALS['settings']['disable_shop_page_calculation'] == 'yes') {
        return true;
    }

    return false;
}

function eh_speedup_product_page() {
    if (is_product() && isset($GLOBALS['settings']['disable_product_page_calculation']) && $GLOBALS['settings']['disable_product_page_calculation'] == 'yes') {
        return true;
    }

    return false;
}

if (!is_admin()) {

    add_filter('woocommerce_get_price_html', 'xa_variable_page_get_price_html', 20, 2);              // update sale price on product variation page
    add_filter($GLOBALS['woocommerce_get_price_hook_name'], 'xa_discounted_sale_price', 22, 2);         // update sale price on product page
    add_filter($GLOBALS['woocommerce_get_sale_price_hook_name'], 'xa_discounted_sale_price', 22, 2);    // update sale price on product page
}
add_action( 'woocommerce_cart_loaded_from_session', 'xa_dp_buy_and_get_offers',33,1);
//add_action('woocommerce_cart_updated', 'xa_dp_buy_and_get_offers', 33, 1);

$dummy_settings['product_rules_on_off'] = 'enable';
$dummy_settings['combinational_rules_on_off'] = 'enable';
$dummy_settings['category_rules_on_off'] = 'enable';
$dummy_settings['cart_rules_on_off'] = 'enable';
$dummy_settings['price_table_on_off'] = 'enable';
$dummy_settings['auto_add_free_product_on_off'] = 'enable';
$dummy_settings['pricing_table_qnty_shrtcode'] = 'nos.';
$dummy_settings['show_discount_in_line_item'] = 'yes';
$dummy_settings['pricing_table_position'] = 'woocommerce_before_add_to_cart_button';
$dummy_settings['show_on_sale'] = 'no';
$GLOBALS['settings'] = get_option('xa_dynamic_pricing_setting', $dummy_settings);

if (isset($GLOBALS['settings']['show_on_sale']) && $GLOBALS['settings']['show_on_sale'] == 'no') {
    $GLOBALS['woocommerce_get_sale_price_hook_name'] = 'woocommerce_product_get_regular_price';
}

function eh_get_price_excluding_tax($product) {
    if (is_wc_version_gt_eql('2.7')) {
        if (function_exists('wc_get_price_excluding_tax')) {
            $display_price = wc_get_price_excluding_tax($product);
        }
    } else {
        $display_price = $product->get_price_excluding_tax();
    }

    return $display_price;
}

$show_discount_in_line_item = isset($GLOBALS['settings']['show_discount_in_line_item']) ? $GLOBALS['settings']['show_discount_in_line_item'] : 'yes';
if ($show_discount_in_line_item == 'yes') {

    add_action('woocommerce_before_calculate_totals', 'xa_show_discount_on_line_item', 1, 1);
    add_filter('woocommerce_cart_item_price', 'on_display_cart_item_price_html', 100, 3);
    include_once('xa_show_discount_on_line_item.php');
}

function on_display_cart_item_price_html($html, $cart_item, $cart_item_key) {
    $_product = $cart_item['data'];
    $formated_price = xa_generate_html_for_variable_price($_product->get_price(), $_product->get_price(), $_product->get_regular_price(), $_product->get_regular_price());
    return !empty($formated_price) ? $formated_price : $html;
}

add_action('wc_ajax_get_refreshed_fragments', 'xa_wc_ajax_get_refreshed_fragments', 1);

if (isset($GLOBALS['settings']['show_discount_in_line_item']) && $GLOBALS['settings']['show_discount_in_line_item'] == 'yes') {
    add_action('woocommerce_before_calculate_totals', 'xa_calculate_and_apply_discount');
} else {
    add_action('woocommerce_cart_calculate_fees', 'xa_calculate_and_apply_discount_and_add_fee');
}

function xa_wc_ajax_get_refreshed_fragments() {
    if (is_cart()) {
        global $woocommerce;
        $woocommerce->cart->calculate_totals();
    }
}

function xa_calculate_and_apply_discount($cart) {

    global $woocommerce;
    if (empty($cart)) {
        $cart = $woocommerce->cart;
    }
    $active_modes = get_allowed_modes();
    $prod_list = xa_dp_initialize_product_array_from_cart_obj($cart);
    $cart_key_pid_mapping = xa_dp_initialize_cartkey_pid_mapping_from_cart_obj($cart);
    $obj = new xa_calculation_handler($prod_list, $active_modes, $cart_key_pid_mapping);
    $discount = $obj->xa_get_dynamic_discount();
}

function xa_calculate_and_apply_discount_and_add_fee($cart) {

    global $woocommerce;
    if (empty($cart)) {
        $cart = $woocommerce->cart;
    }
    $active_modes = get_allowed_modes();
    $prod_list = xa_dp_initialize_product_array_from_cart_obj($cart);
    $cart_key_pid_mapping = xa_dp_initialize_cartkey_pid_mapping_from_cart_obj($cart);
    $obj = new xa_calculation_handler($prod_list, $active_modes, $cart_key_pid_mapping);

    $discount = $obj->xa_get_dynamic_discount();
    $label = __('Discount', 'eh-dynamic-pricing-discounts');
    $label = apply_filters('eha_change_discount_label_filter', $label);
    $cart->add_fee($label, -$discount,false,'');
}

function xa_dp_buy_and_get_offers() {

    if (get_settings_status('buy_and_get_free_rules_on_off') == 'enable') {
        include('valid-rules-class/buy_get_free_rules_execute.php');        //BEFORE   '/VALID-RULES-CLASS'
    }
    return false;
}

function get_allowed_modes() {

    $active_modes = array();
    if ($GLOBALS['settings']['product_rules_on_off'] == 'enable') {
        $active_modes[] = 'product_rules';
    }
    if ($GLOBALS['settings']['combinational_rules_on_off'] == 'enable') {
        $active_modes[] = 'combinational_rules';
    }
    if ($GLOBALS['settings']['category_rules_on_off'] == 'enable') {
        $active_modes[] = 'category_rules';
    }
    if ($GLOBALS['settings']['cart_rules_on_off'] == 'enable') {
        $active_modes[] = 'cart_rules';
    }
    if (!isset($GLOBALS['settings']['cat_comb_rules_on_off'])) {
        $GLOBALS['settings']['cat_comb_rules_on_off'] = 'enable';
    }
    if ($GLOBALS['settings']['cat_comb_rules_on_off'] == 'enable') {
        $active_modes[] = 'cat_combinational_rules';
    }
    return $active_modes;
}

function xa_dp_initialize_product_array_from_cart_obj(WC_Cart $cart) {

    $product_array = array();

    foreach ($cart->cart_contents as $hash_id => $hash) {
        if (strpos($hash_id, 'free') !== false) {
            continue;
        }
        if (isset($hash['variation_id']) && $hash['variation_id'] != 0) {
            $pid = $hash['variation_id'];
        } else {
            $pid = $hash['product_id'];
        }
        $quantity = $hash['quantity'];
        if (isset($product_array[$pid]) && is_numeric($product_array[$pid]) && $product_array[$pid] > 0) {
            $product_array[$pid] += $quantity;
        } elseif (!empty($pid)) {
            $product_array[$pid] = $quantity;
        }
    }
    return $product_array;
}

function xa_dp_initialize_cartkey_pid_mapping_from_cart_obj(WC_Cart $cart) {

    $product_array = array();

    foreach ($cart->cart_contents as $hash_id => $hash) {
        if (strpos($hash_id, 'free') !== false) {
            continue;
        }
        if (isset($hash['variation_id']) && $hash['variation_id'] != 0) {
            $pid = $hash['variation_id'];
        } else {
            $pid = $hash['product_id'];
        }
        if (!isset($product_array[$pid])) {
            $product_array[$pid] = array();
        }

        $product_array[$pid][] = $hash_id;
        $cart->cart_contents[$hash_id]['dynamic_discount'] = 0;
    }
    return $product_array;
}

function get_settings_status($setting_name) {
    if (!isset($GLOBALS['settings'][$setting_name])) {
        return 'disable';
    }
    return $GLOBALS['settings'][$setting_name];
}

$pricing_table_hook = isset($GLOBALS['settings']['pricing_table_position']) ? $GLOBALS['settings']['pricing_table_position'] : 'woocommerce_before_add_to_cart_button';
add_action($pricing_table_hook, 'xa_show_pricing_table', 40);

function xa_show_pricing_table() {

    if ($GLOBALS['settings']['price_table_on_off'] == 'enable') {
        include "xa-single-product-pricing-table.php";
    }
}

$offer_table_hook = isset($GLOBALS['settings']['offer_table_position']) ? $GLOBALS['settings']['offer_table_position'] : 'woocommerce_before_add_to_cart_button';
add_action($offer_table_hook, 'xa_show_offer_table', 40);

function xa_show_offer_table() {

    if (isset($GLOBALS['settings']['offer_table_on_off']) && $GLOBALS['settings']['offer_table_on_off'] == 'enable') {
        include "xa-single-product-offer-table.php";
    }
}

function xa_variable_page_get_price_html($price, $product) {
    if (eh_speedup_product_page() === true) {
        return $price;
    }
    if (eh_speedup_shop_page() === true) {
        return $price;
    }
    if ($product->is_type('variable')) {
        $prices = $product->get_variation_prices(true);
        foreach ($prices['price'] as $vpid => $amt) {
            $vproduct = new WC_Product_Variation($vpid);
            $sp = xa_discounted_sale_price($amt, $vproduct);
            $prices['sale_price'][$vpid] = $sp;
        }
        if (!isset($prices['sale_price']) || is_null($prices['sale_price'])) {
            $prices['sale_price'] = array();
        }
        if (is_null($prices['regular_price'])) {
            $prices['regular_price'] = array();
        }
        sort($prices['sale_price']);
        $min_sale_price = current($prices['sale_price']);
        $max_sale_price = end($prices['sale_price']);
        $min_reg_price = current($prices['regular_price']);
        $max_reg_price = end($prices['regular_price']);

        if (!function_exists('wc_format_price_range')) {

            function wc_format_price_range($from, $to) {
                $price = sprintf(_x('%1$s &ndash; %2$s', 'Price range: from-to', 'woocommerce'), is_numeric($from) ? wc_price($from) : $from, is_numeric($to) ? wc_price($to) : $to);
                return apply_filters('woocommerce_format_price_range', $price, $from, $to);
            }

        }
        if (is_wc_version_gt_eql('2.7')) {
            $price = xa_generate_html_for_variable_price($min_sale_price, $max_sale_price, $min_reg_price, $max_reg_price);
        } else {
            $price = $product->get_price_html_from_to($min_sale_price, $max_sale_price);
        }
        $price = apply_filters('woocommerce_variable_sale_price_html', $price, $product);

        return apply_filters('eha_variable_sale_price_html', $price, $min_sale_price, $max_sale_price, $min_reg_price, $max_reg_price);
    } elseif ($product->is_type('variation')) {
        $new_price = xa_discounted_sale_price('', $product);
        if ($new_price <= 0) {
            $new_price = $price;
        }
        if ($new_price < $product->get_regular_price()) {
            return wc_format_sale_price(wc_get_price_to_display($product, array('price' => $product->get_regular_price())), $new_price) . $product->get_price_suffix();
        }   // before it was not giving canceled regular price for individual variable prods
        else {
            return wc_price($new_price);
        }
    } else {

        return $price;
    }
}

function xa_generate_html_for_variable_price($minsp, $maxsp, $minrp, $maxrp) {

    if ($minsp == $minrp && $maxsp == $maxrp) {
        if ($minrp == $maxrp) {
            return wc_price($minrp);
        } else {
            return wc_price($minrp) . ' – ' . wc_price($maxrp);
        }
    }
    if ($maxrp > $maxsp) {
        if ($minsp != $maxsp) {
            return wc_format_sale_price('(' . wc_price($minrp) . ' - ' . wc_price($maxrp) . ')', wc_price($minsp) . ' - ' . wc_price($maxsp));
        } elseif ($minrp != $maxrp) {
            return wc_format_sale_price('(' . wc_price($minrp) . ' - ' . wc_price($maxrp) . ')', wc_price($maxsp));
        } else {
            return wc_format_sale_price(wc_price($minrp), wc_price($maxsp));
        }
    } else {
        if ($minsp != $maxsp) {
            return wc_format_sale_price(wc_price($maxsp), wc_price($minsp));
        } elseif ($minsp > 0) {
            return wc_price($minsp);
        }
    }
    return $maxsp > 0 ? $maxsp : $minrp;
}

function xa_discounted_sale_price($price, $product) {
    if (is_cart())
        return $price;
    if (eh_speedup_product_page() === true) {
        return $price;
    }
    if (eh_speedup_shop_page() === true) {
        return $price;
    }
    remove_filter($GLOBALS['woocommerce_get_price_hook_name'], 'xa_discounted_sale_price', 22, 2);         // update sale price on product page
    remove_filter($GLOBALS['woocommerce_get_sale_price_hook_name'], 'xa_discounted_sale_price', 22, 2);    // update sale price on product page

    if (empty($price)) {
        $price = $product->get_price();
    }
    if (!is_admin()) {
        $pid = is_wc_version_gt_eql('2.7') ? $product->get_id() : $product->id;
        global $woocommerce;
        $parray = xa_dp_initialize_product_array_from_cart_obj($woocommerce->cart);
        if (isset($parray[$pid]) && $parray[$pid] > 0) {
            $pqnty = $parray[$pid];
        } else {
            $pqnty = 1;
        }

        $prod_list = array($pid => $pqnty);
        $modes = get_allowed_modes();
        $obj = new xa_calculation_handler($prod_list, $modes);
        $discounted_price = $obj->xa_get_dynamic_discount();        
        $discounted_price = $discounted_price / $pqnty;
        
        if (!empty($price) &&($price - $discounted_price) == $product->get_price()) {
            $result = $product->get_price();
            add_filter($GLOBALS['woocommerce_get_price_hook_name'], 'xa_discounted_sale_price', 22, 2);         // update sale price on product page
            add_filter($GLOBALS['woocommerce_get_sale_price_hook_name'], 'xa_discounted_sale_price', 22, 2);    // update sale price on product page

            return $result;
        }
        if (!empty($price) && $price >= $discounted_price) {

            add_filter($GLOBALS['woocommerce_get_price_hook_name'], 'xa_discounted_sale_price', 22, 2);         // update sale price on product page
            add_filter($GLOBALS['woocommerce_get_sale_price_hook_name'], 'xa_discounted_sale_price', 22, 2);    // update sale price on product page
            return $price - $discounted_price;
        } else {
            add_filter($GLOBALS['woocommerce_get_price_hook_name'], 'xa_discounted_sale_price', 22, 2);         // update sale price on product page
            add_filter($GLOBALS['woocommerce_get_sale_price_hook_name'], 'xa_discounted_sale_price', 22, 2);    // update sale price on product page

            return $price;
        }
    } else {
        add_filter($GLOBALS['woocommerce_get_price_hook_name'], 'xa_discounted_sale_price', 22, 2);         // update sale price on product page
        add_filter($GLOBALS['woocommerce_get_sale_price_hook_name'], 'xa_discounted_sale_price', 22, 2);    // update sale price on product page

        return $price;
    }
}

class xa_dynamic_pricing_plugin_Public {

    private $xa_dynamic_pricing_plugin;
    private $version;

    public function __construct($xa_dynamic_pricing_plugin, $version) {

        $this->xa_dynamic_pricing_plugin = $xa_dynamic_pricing_plugin;
        $this->version = $version;
    }

    public function enqueue_styles() {


        wp_enqueue_style($this->xa_dynamic_pricing_plugin, plugin_dir_url(__FILE__) . 'css/xa-dynamic-pricing-plugin-public.css', array(), $this->version, 'all');
    }

    public function enqueue_scripts() {


        wp_enqueue_script($this->xa_dynamic_pricing_plugin, plugin_dir_url(__FILE__) . 'js/xa-dynamic-pricing-plugin-public.js', array('jquery'), $this->version, false);
    }

}