opensourcepos/app/Models/Sale.php

<?php

namespace App\Models;

use CodeIgniter\Database\BaseBuilder;
use CodeIgniter\Database\ResultInterface;
use CodeIgniter\Model;
use App\Libraries\Sale_lib;
use Config\OSPOS;
use ReflectionException;

/**
 * Sale class
 */
class Sale extends Model
{
    protected $table = 'sales';
    protected $primaryKey = 'sale_id';
    protected $useAutoIncrement = true;
    protected $useSoftDeletes = false;
    protected $allowedFields = [
        'sale_time',
        'customer_id',
        'employee_id',
        'comment',
        'quote_number',
        'sale_status',
        'invoice_number',
        'dinner_table_id',
        'work_order_number',
        'sale_type'
    ];

    public function __construct()
    {
        parent::__construct();
        helper('text');
    }

    /**
     * Get sale info
     */
    public function get_info(int $sale_id): ResultInterface
    {
        $config = config(OSPOS::class)->settings;
        $this->create_temp_table(['sale_id' => $sale_id]);

        $decimals = totals_decimals();
        $sales_tax = 'IFNULL(SUM(sales_items_taxes.sales_tax), 0)';
        $cash_adjustment = 'IFNULL(SUM(payments.sale_cash_adjustment), 0)';
        $sale_price = 'CASE WHEN sales_items.discount_type = ' . PERCENT
            . " THEN sales_items.quantity_purchased * sales_items.item_unit_price - ROUND(sales_items.quantity_purchased * sales_items.item_unit_price * sales_items.discount / 100, $decimals) "
            . 'ELSE sales_items.quantity_purchased * (sales_items.item_unit_price - sales_items.discount) END';

        $sale_total = $config['tax_included']
            ? "ROUND(SUM($sale_price), $decimals) + $cash_adjustment"
            : "ROUND(SUM($sale_price), $decimals) + $sales_tax + $cash_adjustment";

        $sql = 'sales.sale_id AS sale_id,
                MAX(DATE(sales.sale_time)) AS sale_date,
                MAX(sales.sale_time) AS sale_time,
                MAX(sales.comment) AS comment,
                MAX(sales.sale_status) AS sale_status,
                MAX(sales.invoice_number) AS invoice_number,
                MAX(sales.quote_number) AS quote_number,
                MAX(sales.employee_id) AS employee_id,
                MAX(sales.customer_id) AS customer_id,
                MAX(CONCAT(customer_p.first_name, " ", customer_p.last_name)) AS customer_name,
                MAX(customer_p.first_name) AS first_name,
                MAX(customer_p.last_name) AS last_name,
                MAX(customer_p.email) AS email,
                MAX(customer_p.comments) AS comments,
                MAX(IFnull(payments.sale_cash_adjustment, 0)) AS cash_adjustment,
                MAX(IFnull(payments.sale_cash_refund, 0)) AS cash_refund,
                ' . "
                $sale_total AS amount_due,
                MAX(IFnull(payments.sale_payment_amount, 0)) AS amount_tendered,
                (MAX(payments.sale_payment_amount)) - ($sale_total) AS change_due,
                " . '
                MAX(payments.payment_type) AS payment_type';

        $builder = $this->db->table('sales_items AS sales_items');
        $builder->select($sql);

        $builder->join('sales AS sales', 'sales_items.sale_id = sales.sale_id', 'inner');
        $builder->join('people AS customer_p', 'sales.customer_id = customer_p.person_id', 'LEFT');
        $builder->join('customers AS customer', 'sales.customer_id = customer.person_id', 'LEFT');
        $builder->join('sales_payments_temp AS payments', 'sales.sale_id = payments.sale_id', 'LEFT OUTER');
        $builder->join(
            'sales_items_taxes_temp AS sales_items_taxes',
            'sales_items.sale_id = sales_items_taxes.sale_id AND sales_items.item_id = sales_items_taxes.item_id AND sales_items.line = sales_items_taxes.line',
            'LEFT OUTER'
        );

        $builder->where('sales.sale_id', $sale_id);

        $builder->groupBy('sales.sale_id');
        $builder->orderBy('sales.sale_time', 'asc');

        return $builder->get();
    }

    /**
     * Get number of rows for the takings (sales/manage) view
     */
    public function get_found_rows(string $search, array $filters): int
    {
        return $this->search($search, $filters, 0, 0, 'sales.sale_time', 'desc', true);
    }

    /**
     * Get the sales data for the takings (sales/manage) view
     */
    public function search(string $search, array $filters, ?int $rows = 0, ?int $limit_from = 0, ?string $sort = 'sales.sale_time', ?string $order = 'desc', ?bool $count_only = false)
    {
        // Set default values
        if ($rows == null) $rows = 0;
        if ($limit_from == null) $limit_from = 0;
        if ($sort == null) $sort = 'sales.sale_time';
        if ($order == null) $order = 'desc';
        if ($count_only == null) $count_only = false;

        $config = config(OSPOS::class)->settings;
        $db_prefix = $this->db->getPrefix();
        $decimals = totals_decimals();

        // Only non-suspended records
        $where = 'sales.sale_status = 0 AND ';
        $where .= empty($config['date_or_time_format'])
            ? 'DATE(' . $db_prefix . 'sales.sale_time) BETWEEN ' . $this->db->escape($filters['start_date']) . ' AND ' . $this->db->escape($filters['end_date'])
            : 'sales.sale_time BETWEEN ' . $this->db->escape(rawurldecode($filters['start_date'])) . ' AND ' . $this->db->escape(rawurldecode($filters['end_date']));

        $this->create_temp_table_sales_payments_data($where);

        $sale_price = 'CASE WHEN `sales_items`.`discount_type` = ' . PERCENT
            . " THEN `sales_items`.`quantity_purchased` * `sales_items`.`item_unit_price` - ROUND(`sales_items`.`quantity_purchased` * `sales_items`.`item_unit_price` * `sales_items`.`discount` / 100, $decimals) "
            . 'ELSE `sales_items`.`quantity_purchased` * (`sales_items`.`item_unit_price` - `sales_items`.`discount`) END';

        $sale_cost = 'SUM(`sales_items`.`item_cost_price` * `sales_items`.`quantity_purchased`)';

        $tax = 'IFNULL(SUM(`sales_items_taxes`.`tax`), 0)';
        $sales_tax = 'IFNULL(SUM(`sales_items_taxes`.`sales_tax`), 0)';
        $internal_tax = 'IFNULL(SUM(`sales_items_taxes`.`internal_tax`), 0)';
        $cash_adjustment = 'IFNULL(SUM(`payments`.`sale_cash_adjustment`), 0)';

        $sale_subtotal = "ROUND(SUM($sale_price), $decimals) - $internal_tax";
        $sale_total = "ROUND(SUM($sale_price), $decimals) + $sales_tax + $cash_adjustment";

        $this->create_temp_table_sales_items_taxes_data($where);

        $builder = $this->db->table('sales_items AS sales_items');

        // get_found_rows case
        if ($count_only) {
            $builder->select('COUNT(DISTINCT `' . $db_prefix . 'sales`.`sale_id`) AS count');
        } else {
            $builder->select([
                '`' . $db_prefix . 'sales`.`sale_id` AS sale_id',
                'MAX(DATE(`' . $db_prefix . 'sales`.`sale_time`)) AS sale_date',
                'MAX(`' . $db_prefix . 'sales`.`sale_time`) AS sale_time',
                'MAX(`' . $db_prefix . 'sales`.`invoice_number`) AS invoice_number',
                'MAX(`' . $db_prefix . 'sales`.`quote_number`) AS quote_number',
                'SUM(`sales_items`.`quantity_purchased`) AS items_purchased',
                'MAX(CONCAT(`customer_p`.`first_name`, " ", `customer_p`.`last_name`)) AS customer_name',
                'MAX(`customer`.`company_name`) AS company_name',
                $sale_subtotal . ' AS subtotal',
                $tax . ' AS tax',
                $sale_total . ' AS total',
                $sale_cost . ' AS cost',
                '(' . $sale_total . ' - ' . $sale_cost . ') AS profit',
                $sale_total . ' AS amount_due',
                'MAX(`payments`.`sale_payment_amount`) AS amount_tendered',
                '(MAX(`payments`.`sale_payment_amount`)) - (' . $sale_total . ') AS change_due',
                'MAX(`payments`.`payment_type`) AS payment_type'
            ], false);
        }

        $builder->join('sales', '`sales_items`.`sale_id` = `' . $db_prefix . 'sales`.`sale_id`', 'inner');
        $builder->join('people AS customer_p', '`' . $db_prefix . 'sales`.`customer_id` = `customer_p`.`person_id`', 'LEFT');
        $builder->join('customers AS customer', '`' . $db_prefix . 'sales`.`customer_id` = `customer`.`person_id`', 'LEFT');
        $builder->join('sales_payments_temp AS payments', '`' . $db_prefix . 'sales`.`sale_id` = `payments`.`sale_id`', 'LEFT OUTER');
        $builder->join(
            'sales_items_taxes_temp AS sales_items_taxes',
            'sales_items.sale_id = sales_items_taxes.sale_id AND sales_items.item_id = sales_items_taxes.item_id AND sales_items.line = sales_items_taxes.line',
            'LEFT OUTER'
        );

        $builder->where($where);

        $this->add_filters_to_query($search, $filters, $builder);

        // get_found_rows
        if ($count_only) {
            return $builder->get()->getRow()->count;
        }

        $builder->groupBy('sales.sale_id');

        // Order by sale time by default
        $builder->orderBy($sort, $order);

        if ($rows > 0) {
            $builder->limit($rows, $limit_from);
        }

        return $builder->get();
    }

    /**
     * Get the payment summary for the takings (sales/manage) view
     */
    public function get_payments_summary(string $search, array $filters): array
    {
        $config = config(OSPOS::class)->settings;

        // Get payment summary
        $builder = $this->db->table('sales AS sales');
        $builder->select('payment_type, COUNT(payment_amount) AS count, SUM(payment_amount - cash_refund) AS payment_amount');
        $builder->join('sales_payments', 'sales_payments.sale_id = sales.sale_id');
        $builder->join('people AS customer_p', 'sales.customer_id = customer_p.person_id', 'LEFT');
        $builder->join('customers AS customer', 'sales.customer_id = customer.person_id', 'LEFT');

        // TODO: This needs to be replaced with Ternary notation
        if (empty($config['date_or_time_format'])) {    // TODO: duplicated code.  We should think about refactoring out a method.
            $builder->where('DATE(sales.sale_time) BETWEEN ' . $this->db->escape($filters['start_date']) . ' AND ' . $this->db->escape($filters['end_date']));
        } else {
            $builder->where('sales.sale_time BETWEEN ' . $this->db->escape(rawurldecode($filters['start_date'])) . ' AND ' . $this->db->escape(rawurldecode($filters['end_date'])));
        }

        if (!empty($search)) {    // TODO: duplicated code.  We should think about refactoring out a method.
            if ($filters['is_valid_receipt']) {
                $pieces = explode(' ', $search);
                $builder->where('sales.sale_id', $pieces[1]);
            } else {
                $builder->groupStart();
                $builder->like('customer_p.last_name', $search);    // Customer last name
                $builder->orLike('customer_p.first_name', $search);    // Customer first name
                $builder->orLike('CONCAT(customer_p.first_name, " ", customer_p.last_name)', $search);    // Customer first and last name
                $builder->orLike('customer.company_name', $search);    // Customer company name
                $builder->groupEnd();
            }
        }

        // TODO: This needs to be converted to a switch statement
        if ($filters['sale_type'] == 'sales') {    // TODO: we need to think about refactoring this block to a switch statement.
            $builder->where('sales.sale_status = ' . COMPLETED . ' AND payment_amount > 0');
        } elseif ($filters['sale_type'] == 'quotes') {
            $builder->where('sales.sale_status = ' . SUSPENDED . ' AND sales.quote_number IS NOT NULL');
        } elseif ($filters['sale_type'] == 'returns') {
            $builder->where('sales.sale_status = ' . COMPLETED . ' AND payment_amount < 0');
        } elseif ($filters['sale_type'] == 'all') {
            $builder->where('sales.sale_status = ' . COMPLETED);
        }

        // TODO: Avoid the double negatives
        if ($filters['only_invoices']) {
            $builder->where('invoice_number IS NOT NULL');
        }

        if ($filters['only_cash']) {
            $builder->like('payment_type', lang('Sales.cash'));
        }

        if ($filters['only_due']) {
            $builder->like('payment_type', lang('Sales.due'));
        }

        if ($filters['only_check']) {
            $builder->like('payment_type', lang('Sales.check'));
        }

        if ($filters['only_creditcard']) {
            $builder->like('payment_type', lang('Sales.credit'));
        }

        $builder->groupBy('payment_type');

        $payments = $builder->get()->getResultArray();

        // Consider Gift Card as only one type of payment and do not show "Gift Card: 1, Gift Card: 2, etc." in the total
        $gift_card_count = 0;
        $gift_card_amount = 0;

        foreach ($payments as $key => $payment) {
            if (strstr($payment['payment_type'], lang('Sales.giftcard'))) {
                $gift_card_count  += $payment['count'];
                $gift_card_amount += $payment['payment_amount'];

                // Remove the "Gift Card: 1", "Gift Card: 2", etc. payment string
                unset($payments[$key]);
            }
        }

        if ($gift_card_count > 0) {
            $payments[] = ['payment_type' => lang('Sales.giftcard'), 'count' => $gift_card_count, 'payment_amount' => $gift_card_amount];
        }

        return $payments;
    }

    /**
     * Gets total of rows
     */
    public function get_total_rows(): int
    {
        $builder = $this->db->table('sales');

        return $builder->countAllResults();
    }

    /**
     * Gets search suggestions
     */
    public function get_search_suggestions(string $search, int $limit = 25): array    // TODO: $limit is never used.
    {
        $suggestions = [];

        if (!$this->is_valid_receipt($search)) {
            $builder = $this->db->table('sales');
            $builder->distinct()->select('first_name, last_name');
            $builder->join('people', 'people.person_id = sales.customer_id');
            $builder->like('last_name', $search);
            $builder->orLike('first_name', $search);
            $builder->orLike('CONCAT(first_name, " ", last_name)', $search);
            $builder->orLike('company_name', $search);
            $builder->orderBy('last_name', 'asc');

            foreach ($builder->get()->getResultArray() as $result) {
                $suggestions[] = ['label' => $result['first_name'] . ' ' . $result['last_name']];
            }
        } else {
            $suggestions[] = ['label' => $search];
        }

        return $suggestions;
    }

    /**
     * Gets total of invoice rows
     */
    public function get_invoice_count(): int
    {
        $builder = $this->db->table('sales');
        $builder->where('invoice_number IS NOT NULL');

        return $builder->countAllResults();
    }

    /**
     * Gets sale by invoice number
     */
    public function get_sale_by_invoice_number(string $invoice_number): ResultInterface
    {
        $builder = $this->db->table('sales');
        $builder->where('invoice_number', $invoice_number);

        return $builder->get();
    }

    /**
     * @param string $year
     * @param int $start_from
     * @return int
     */
    public function get_invoice_number_for_year(string $year = '', int $start_from = 0): int
    {
        return $this->get_number_for_year('invoice_number', $year, $start_from);
    }

    /**
     * @param string $year
     * @param int $start_from
     * @return int
     */
    public function get_quote_number_for_year(string $year = '', int $start_from = 0): int
    {
        return $this->get_number_for_year('quote_number', $year, $start_from);
    }

    /**
     * Gets invoice number by year
     */
    private function get_number_for_year(string $field, string $year = '', int $start_from = 0): int
    {
        $year = $year == '' ? date('Y') : $year;

        $builder = $this->db->table('sales');
        $builder->select('COUNT( 1 ) AS number_year');
        $builder->where('DATE_FORMAT(sale_time, "%Y" ) = ', $year);
        $builder->where("$field IS NOT NULL");
        $result = $builder->get()->getRowArray();

        return ($start_from + $result['number_year']);
    }

    /**
     * Checks if valid receipt
     */
    public function is_valid_receipt(string &$receipt_sale_id): bool    // TODO: like the others, maybe this should be an array rather than a delimited string... either that or the parameter name needs to be changed. $receipt_sale_id implies that it's an int.
    {
        $config = config(OSPOS::class)->settings;

        if (!empty($receipt_sale_id)) {
            // POS #
            $pieces = explode(' ', $receipt_sale_id);

            if (count($pieces) == 2 && preg_match('/(POS)/i', $pieces[0])) {
                return $this->exists($pieces[1]);
            } elseif ($config['invoice_enable']) {
                $sale_info = $this->get_sale_by_invoice_number($receipt_sale_id);

                if ($sale_info->getNumRows() > 0) {
                    $receipt_sale_id = 'POS ' . $sale_info->getRow()->sale_id;

                    return true;
                }
            }
        }

        return false;
    }

    /**
     * Checks if sale exists
     */
    public function exists(int $sale_id): bool
    {
        $builder = $this->db->table('sales');
        $builder->where('sale_id', $sale_id);

        return ($builder->get()->getNumRows() == 1);    // TODO: ===
    }

    /**
     * Update sale
     */
    public function update($sale_id = null, $sale_data = null): bool
    {
        $builder = $this->db->table('sales');
        $builder->where('sale_id', $sale_id);
        $update_data = $sale_data;
        unset($update_data['payments']);
        $success = $builder->update($update_data);

        // Touch payment only if update sale is successful and there is a payments object otherwise the result would be to delete all the payments associated to the sale
        if ($success && !empty($sale_data['payments'])) {
            // Run these queries as a transaction, we want to make sure we do all or nothing
            $this->db->transStart();

            $builder = $this->db->table('sales_payments');

            // Add new payments
            foreach ($sale_data['payments'] as $payment) {
                $payment_id = $payment['payment_id'];
                $payment_type = $payment['payment_type'];
                $payment_amount = $payment['payment_amount'];
                $cash_refund = $payment['cash_refund'];
                $cash_adjustment = $payment['cash_adjustment'];
                $employee_id = $payment['employee_id'];

                if ($payment_id == NEW_ENTRY && $payment_amount != 0) {
                    // Add a new payment transaction
                    $sales_payments_data = [
                        'sale_id'         => $sale_id,
                        'payment_type'    => $payment_type,
                        'payment_amount'  => $payment_amount,
                        'cash_refund'     => $cash_refund,
                        'cash_adjustment' => $cash_adjustment,
                        'employee_id'     => $employee_id
                    ];
                    $success = $builder->insert($sales_payments_data);
                } elseif ($payment_id != NEW_ENTRY) {
                    if ($payment_amount != 0) {
                        // Update existing payment transactions (payment_type only)
                        $sales_payments_data = [
                            'payment_type'    => $payment_type,
                            'payment_amount'  => $payment_amount,
                            'cash_refund'     => $cash_refund,
                            'cash_adjustment' => $cash_adjustment
                        ];

                        $builder->where('payment_id', $payment_id);
                        $success = $builder->update($sales_payments_data);
                    } else {
                        // Remove existing payment transactions with a payment amount of zero
                        $success = $builder->delete(['payment_id' => $payment_id]);
                    }
                }
            }

            $this->db->transComplete();
            $success &= $this->db->transStatus();
        }

        return $success;
    }

    /**
     * Save the sale information after the sales is complete but before the final document is printed
     * The sales_taxes variable needs to be initialized to an empty array before calling
     * @throws ReflectionException
     */
    public function saveValue(
        int $sale_id,
        string &$sale_status,
        array &$items,
        int $customer_id,
        int $employee_id,
        string $comment,
        ?string $invoice_number,
        ?string $work_order_number,
        ?string $quote_number,
        int $sale_type,
        ?array $payments,
        ?int $dinner_table_id,
        ?array &$sales_taxes
    ): int {    // TODO: this method returns the sale_id but the override is expecting it to return a bool. The signature needs to be reworked.  Generally when there are more than 3 maybe 4 parameters, there's a good chance that an object needs to be passed rather than so many params.
        $config = config(OSPOS::class)->settings;
        $attribute = model(Attribute::class);
        $customer = model(Customer::class);
        $giftcard = model(Giftcard::class);
        $inventory = model('Inventory');
        $item = model(Item::class);

        $item_quantity = model(Item_quantity::class);

        if ($sale_id != NEW_ENTRY) {
            $this->clear_suspended_sale_detail($sale_id);
        }

        if (count($items) == 0) {    // TODO: ===
            return -1;    // TODO: Replace -1 with a constant
        }

        $sales_data = [
            'sale_time'         => date('Y-m-d H:i:s'),
            'customer_id'       => $customer->exists($customer_id) ? $customer_id : null,
            'employee_id'       => $employee_id,
            'comment'           => $comment,
            'sale_status'       => $sale_status,
            'invoice_number'    => $invoice_number,
            'quote_number'      => $quote_number,
            'work_order_number' => $work_order_number,
            'dinner_table_id'   => $dinner_table_id,
            'sale_type'         => $sale_type
        ];

        // Run these queries as a transaction, we want to make sure we do all or nothing
        $this->db->transStart();

        if ($sale_id == NEW_ENTRY) {
            $builder = $this->db->table('sales');
            $builder->insert($sales_data);
            $sale_id = $this->db->insertID();
        } else {
            $builder = $this->db->table('sales');
            $builder->where('sale_id', $sale_id);
            $builder->update($sales_data);
        }

        $total_amount = 0;
        $total_amount_used = 0;

        foreach ($payments as $payment_id => $payment) {
            if (!empty(strstr($payment['payment_type'], lang('Sales.giftcard')))) {
                // We have a gift card, and we have to deduct the used value from the total value of the card.
                $splitpayment = explode(':', $payment['payment_type']);    // TODO: this variable doesn't follow our naming conventions.  Probably should be refactored to split_payment.
                $cur_giftcard_value = $giftcard->get_giftcard_value($splitpayment[1]);    // TODO: this should be refactored to $current_giftcard_value
                $giftcard->update_giftcard_value($splitpayment[1], $cur_giftcard_value - $payment['payment_amount']);
            } elseif (!empty(strstr($payment['payment_type'], lang('Sales.rewards')))) {
                $cur_rewards_value = $customer->getInfo($customer_id)->points;
                $customer->update_reward_points_value($customer_id, $cur_rewards_value - $payment['payment_amount']);
                $total_amount_used = floatval($total_amount_used) + floatval($payment['payment_amount']);
            }

            $sales_payments_data = [
                'sale_id'         => $sale_id,
                'payment_type'    => $payment['payment_type'],
                'payment_amount'  => $payment['payment_amount'],
                'cash_refund'     => $payment['cash_refund'],
                'cash_adjustment' => $payment['cash_adjustment'],
                'employee_id'     => $employee_id
            ];

            $builder = $this->db->table('sales_payments');
            $builder->insert($sales_payments_data);

            $total_amount = floatval($total_amount) + floatval($payment['payment_amount']) - floatval($payment['cash_refund']);
        }

        $this->save_customer_rewards($customer_id, $sale_id, $total_amount, $total_amount_used);

        $customer = $customer->getInfo($customer_id);

        foreach ($items as $line => $item_data) {
            $cur_item_info = $item->get_info($item_data['item_id']);

            if ($item_data['price'] == 0.00) {
                $item_data['discount'] = 0.00;
            }

            $sales_items_data = [
                'sale_id'            => $sale_id,
                'item_id'            => $item_data['item_id'],
                'line'               => $item_data['line'],
                'description'        => character_limiter($item_data['description'], 255),
                'serialnumber'       => character_limiter($item_data['serialnumber'], 30),
                'quantity_purchased' => $item_data['quantity'],
                'discount'           => $item_data['discount'],
                'discount_type'      => $item_data['discount_type'],
                'item_cost_price'    => $item_data['cost_price'],
                'item_unit_price'    => $item_data['price'],
                'item_location'      => $item_data['item_location'],
                'print_option'       => $item_data['print_option']
            ];

            $builder = $this->db->table('sales_items');
            $builder->insert($sales_items_data);

            if ($cur_item_info->stock_type == HAS_STOCK && $sale_status == COMPLETED) {    // TODO: === ?
                // Update stock quantity if item type is a standard stock item and the sale is a standard sale
                $item_quantity_data = $item_quantity->getItemQuantity($item_data['item_id'], $item_data['item_location']);

                $item_quantity->saveValue(
                    [
                        'quantity'    => $item_quantity_data->quantity - $item_data['quantity'],
                        'item_id'     => $item_data['item_id'],
                        'location_id' => $item_data['item_location']
                    ],
                    $item_data['item_id'],
                    $item_data['item_location']
                );

                // If an items was deleted but later returned it's restored with this rule
                if ($item_data['quantity'] < 0) {
                    $item->undelete($item_data['item_id']);
                }

                // Inventory Count Details
                $sale_remarks = 'POS ' . $sale_id;    // TODO: Use string interpolation here.
                $inv_data = [
                    'trans_date'      => date('Y-m-d H:i:s'),
                    'trans_items'     => $item_data['item_id'],
                    'trans_user'      => $employee_id,
                    'trans_location'  => $item_data['item_location'],
                    'trans_comment'   => $sale_remarks,
                    'trans_inventory' => -$item_data['quantity']
                ];

                $inventory->insert($inv_data, false);
            }

            $attribute->copy_attribute_links($item_data['item_id'], 'sale_id', $sale_id);
        }

        if ($customer_id == NEW_ENTRY || $customer->taxable) {
            $this->save_sales_tax($sale_id, $sales_taxes[0]);
            $this->save_sales_items_taxes($sale_id, $sales_taxes[1]);
        }

        if ($config['dinner_table_enable']) {
            $dinner_table = model(Dinner_table::class);
            if ($sale_status == COMPLETED) {    // TODO: === ?
                $dinner_table->release($dinner_table_id);
            } else {
                $dinner_table->occupy($dinner_table_id);
            }
        }

        $this->db->transComplete();

        return $this->db->transStatus() ? $sale_id : -1;
    }

    /**
     * Saves sale tax
     */
    public function save_sales_tax(int $sale_id, array $sales_taxes): void    // TODO: should we return the result of the insert here as a bool?
    {
        $builder = $this->db->table('sales_taxes');

        foreach ($sales_taxes as $line => $sales_tax) {
            $sales_tax['sale_id'] = $sale_id;
            $builder->insert($sales_tax);
        }
    }

    /**
     * Apply customer sales tax if the customer sales tax is enabled
     * The original tax is still supported if the user configures it,
     * but it won't make sense unless it's used exclusively for the purpose
     * of VAT tax which becomes a price component.  VAT taxes must still be reported
     * as a separate tax entry on the invoice.
     */
    public function save_sales_items_taxes(int $sale_id, array $sales_item_taxes): void
    {
        $builder = $this->db->table('sales_items_taxes');

        foreach ($sales_item_taxes as $line => $tax_item) {
            $sales_items_taxes = [
                'sale_id'           => $sale_id,
                'item_id'           => $tax_item['item_id'],
                'line'              => $tax_item['line'],
                'name'              => $tax_item['name'],
                'percent'           => $tax_item['percent'],
                'tax_type'          => $tax_item['tax_type'],
                'rounding_code'     => $tax_item['rounding_code'],
                'cascade_sequence'  => $tax_item['cascade_sequence'],
                'item_tax_amount'   => $tax_item['item_tax_amount'],
                'sales_tax_code_id' => $tax_item['sales_tax_code_id'],
                'tax_category_id'   => $tax_item['tax_category_id'],
                'jurisdiction_id'   => $tax_item['jurisdiction_id']
            ];

            $builder->insert($sales_items_taxes);
        }
    }

    /**
     * Return the taxes that were charged
     */
    public function get_sales_taxes(int $sale_id): array
    {
        $builder = $this->db->table('sales_taxes');
        $builder->where('sale_id', $sale_id);
        $builder->orderBy('print_sequence', 'asc');

        $query = $builder->get();

        return $query->getResultArray();
    }

    /**
     * Return the taxes applied to a sale for a particular item
     */
    public function get_sales_item_taxes(int $sale_id, int $item_id): array
    {
        $builder = $this->db->table('sales_items_taxes');
        $builder->select('item_id, name, percent');
        $builder->where('sale_id', $sale_id);
        $builder->where('item_id', $item_id);

        // Return an array of taxes for an item
        return $builder->get()->getResultArray();
    }

    /**
     * Deletes list of sales
     * @throws ReflectionException
     */
    public function delete_list(array $sale_ids, int $employee_id, bool $update_inventory = true): bool
    {
        $result = true;

        foreach ($sale_ids as $sale_id) {
            $result &= $this->delete($sale_id, false, $update_inventory, $employee_id);
        }

        return $result;
    }

    /**
     * Restores list of sales
     */
    public function restore_list(array $sale_ids, int $employee_id, bool $update_inventory = true): bool    // TODO: $employee_id and $update_inventory are never used in the function.
    {
        foreach ($sale_ids as $sale_id) {
            $this->update_sale_status($sale_id, SUSPENDED);
        }

        return true;
    }

    /**
     * Delete sale.  Hard deletes are not supported for sales transactions.
     * When a sale is "deleted" it is simply changed to a status of canceled.
     * However, if applicable the inventory still needs to be updated
     * @throws ReflectionException
     */
    public function delete($sale_id = null, bool $purge = false, bool $update_inventory = true, $employee_id = null): bool
    {
        // Start a transaction to assure data integrity
        $this->db->transStart();

        $sale_status = $this->get_sale_status($sale_id);

        if ($update_inventory && $sale_status == COMPLETED) {
            // Defect, not all item deletions will be undone?
            // Get array with all the items involved in the sale to update the inventory tracking
            $inventory = model('Inventory');
            $item = model(Item::class);
            $item_quantity = model(Item_quantity::class);

            $items = $this->get_sale_items($sale_id)->getResultArray();

            foreach ($items as $item_data) {
                $cur_item_info = $item->get_info($item_data['item_id']);

                if ($cur_item_info->stock_type == HAS_STOCK) {
                    // Create query to update inventory tracking
                    $inv_data = [
                        'trans_date'      => date('Y-m-d H:i:s'),
                        'trans_items'     => $item_data['item_id'],
                        'trans_user'      => $employee_id,
                        'trans_comment'   => 'Deleting sale ' . $sale_id,
                        'trans_location'  => $item_data['item_location'],
                        'trans_inventory' => $item_data['quantity_purchased']
                    ];
                    // Update inventory
                    $inventory->insert($inv_data, false);

                    // Update quantities
                    $item_quantity->change_quantity($item_data['item_id'], $item_data['item_location'], $item_data['quantity_purchased']);
                }
            }
        }

        $this->update_sale_status($sale_id, CANCELED);

        // Execute transaction
        $this->db->transComplete();

        return $this->db->transStatus();
    }

    /**
     * Gets sale item
     */
    public function get_sale_items(int $sale_id): ResultInterface
    {
        $builder = $this->db->table('sales_items');
        $builder->where('sale_id', $sale_id);

        return $builder->get();
    }

    /**
     * Used by the invoice and receipt programs
     */
    public function get_sale_items_ordered(int $sale_id): ResultInterface
    {
        $config = config(OSPOS::class)->settings;
        $item = model(Item::class);

        $builder = $this->db->table('sales_items AS sales_items');
        $builder->select('
            sales_items.sale_id,
            sales_items.item_id,
            sales_items.description,
            serialnumber,
            line,
            quantity_purchased,
            item_cost_price,
            item_unit_price,
            discount,
            discount_type,
            item_location,
            print_option,
            ' . $item->get_item_name('name') . ',
            category,
            item_type,
            stock_type');
        $builder->join('items AS items', 'sales_items.item_id = items.item_id');
        $builder->where('sales_items.sale_id', $sale_id);

        // Entry sequence (this will render kits in the expected sequence)
        if ($config['line_sequence'] == '0') {    // TODO: Replace these with constants and this should be converted to a switch.
            $builder->orderBy('line', 'asc');
        }
        // Group by Stock Type (nonstock first - type 1, stock next - type 0)
        elseif ($config['line_sequence'] == '1') {
            $builder->orderBy('stock_type', 'desc');
            $builder->orderBy('sales_items.description', 'asc');
            $builder->orderBy('items.name', 'asc');
            $builder->orderBy('items.qty_per_pack', 'asc');
        }
        // Group by Item Category
        elseif ($config['line_sequence'] == '2') {
            $builder->orderBy('category', 'asc');
            $builder->orderBy('sales_items.description', 'asc');
            $builder->orderBy('items.name', 'asc');
            $builder->orderBy('items.qty_per_pack', 'asc');
        }
        // Group by entry sequence in descending sequence (the Standard)
        else {
            $builder->orderBy('line', 'desc');
        }

        return $builder->get();
    }

    /**
     * Gets sale payments
     */
    public function get_sale_payments(int $sale_id): ResultInterface
    {
        $builder = $this->db->table('sales_payments');
        $builder->where('sale_id', $sale_id);

        return $builder->get();
    }

    /**
     * Gets sale payment options
     */
    public function get_payment_options(bool $giftcard = true, bool $reward_points = true): array
    {
        $payments = get_payment_options();

        if ($giftcard) {
            $payments[lang('Sales.giftcard')] = lang('Sales.giftcard');
        }

        if ($reward_points) {
            $payments[lang('Sales.rewards')] = lang('Sales.rewards');
        }
        $sale_lib = new Sale_lib();
        if ($sale_lib->get_mode() == 'sale_work_order') {
            $payments[lang('Sales.cash_deposit')] = lang('Sales.cash_deposit');
            $payments[lang('Sales.credit_deposit')] = lang('Sales.credit_deposit');
        }

        return $payments;
    }

    /**
     * Gets sale customer name
     */
    public function get_customer(int $sale_id): object
    {
        $customer = model(Customer::class);

        $builder = $this->db->table('sales');
        $builder->where('sale_id', $sale_id);

        return $customer->getInfo($builder->get()->getRow()->customer_id);
    }

    /**
     * Gets sale employee name
     */
    public function get_employee(int $sale_id): object
    {
        $builder = $this->db->table('sales');
        $builder->where('sale_id', $sale_id);

        $employee = model(Employee::class);

        return $employee->getInfo($builder->get()->getRow()->employee_id);
    }

    /**
     * Checks if quote number exists
     */
    public function quoteNumberExists(string $quote_number, string $sale_id = ''): bool
    {
        $builder = $this->db->table('sales');
        $builder->where('quote_number', $quote_number);

        if (!empty($sale_id)) {
            $builder->where('sale_id !=', $sale_id);
        }

        return ($builder->get()->getNumRows() == 1);    // TODO: ===
    }

    /**
     * Checks if invoice number exists
     */
    public function checkInvoiceNumberExists(string $invoice_number, string $sale_id = ''): bool
    {
        $builder = $this->db->table('sales');
        $builder->where('invoice_number', $invoice_number);

        if (!empty($sale_id)) {
            $builder->where('sale_id !=', $sale_id);
        }

        return ($builder->get()->getNumRows() == 1);    // TODO: ===
    }

    /**
     * Checks if work order number exists
     */
    public function workOrderNumberExists(string $work_order_number, string $sale_id = ''): bool
    {
        $builder = $this->db->table('sales');
        $builder->where('invoice_number', $work_order_number);
        if (!empty($sale_id)) {
            $builder->where('sale_id !=', $sale_id);
        }

        return ($builder->get()->getNumRows() == 1);    // TODO: ===
    }

    /**
     * Gets Giftcard value
     */
    public function get_giftcard_value(string $giftcardNumber): float
    {
        $giftcard = model(Giftcard::class);

        if (!$giftcard->exists($giftcard->get_giftcard_id($giftcardNumber))) {    // TODO: camelCase is used here for the variable name but we are using _ everywhere else. CI4 moved to camelCase... we should pick one and do that.
            return 0;
        }

        $builder = $this->db->table('giftcards');
        $builder->where('giftcard_number', $giftcardNumber);

        return $builder->get()->getRow()->value;
    }

    /**
     * Creates sales temporary dimensional table
     * We create a temp table that allows us to do easy report/sales queries
     */
    public function create_temp_table(array $inputs): void
    {
        $config = config(OSPOS::class)->settings;

        if (empty($inputs['sale_id'])) {
            if (empty($config['date_or_time_format'])) {    // TODO: This needs to be replaced with Ternary notation
                $where = 'DATE(sales.sale_time) BETWEEN ' . $this->db->escape($inputs['start_date']) . ' AND ' . $this->db->escape($inputs['end_date']);
            } else {
                $where = 'sales.sale_time BETWEEN ' . $this->db->escape(rawurldecode($inputs['start_date'])) . ' AND ' . $this->db->escape(rawurldecode($inputs['end_date']));
            }
        } else {
            $where = 'sales.sale_id = ' . $this->db->escape($inputs['sale_id']);
        }

        $decimals = totals_decimals();

        $sale_price = 'CASE WHEN sales_items.discount_type = ' . PERCENT
            . " THEN sales_items.quantity_purchased * sales_items.item_unit_price - ROUND(sales_items.quantity_purchased * sales_items.item_unit_price * sales_items.discount / 100, $decimals) "
            . 'ELSE sales_items.quantity_purchased * (sales_items.item_unit_price - sales_items.discount) END';

        $sale_cost = 'SUM(sales_items.item_cost_price * sales_items.quantity_purchased)';

        $tax = 'IFNULL(SUM(sales_items_taxes.tax), 0)';
        $sales_tax = 'IFNULL(SUM(sales_items_taxes.sales_tax), 0)';
        $internal_tax = 'IFNULL(SUM(sales_items_taxes.internal_tax), 0)';
        $cash_adjustment = 'IFNULL(SUM(payments.sale_cash_adjustment), 0)';

        if ($config['tax_included']) {
            $sale_total = "ROUND(SUM($sale_price), $decimals) + $cash_adjustment";
            $sale_subtotal = "$sale_total - $internal_tax";
        } else {
            $sale_subtotal = "ROUND(SUM($sale_price), $decimals) - $internal_tax + $cash_adjustment";
            $sale_total = "ROUND(SUM($sale_price), $decimals) + $sales_tax + $cash_adjustment";
        }

        // Create a temporary table to contain all the sum of taxes per sale item
        $sql = 'CREATE TEMPORARY TABLE IF NOT EXISTS ' . $this->db->prefixTable('sales_items_taxes_temp') .
            ' (INDEX(sale_id), INDEX(item_id)) ENGINE=MEMORY
            (
                SELECT sales_items_taxes.sale_id AS sale_id,
                    sales_items_taxes.item_id AS item_id,
                    sales_items_taxes.line AS line,
                    SUM(ROUND(sales_items_taxes.item_tax_amount, ' . $decimals . ')) AS tax,
                    SUM(ROUND(CASE WHEN sales_items_taxes.tax_type = 0 THEN sales_items_taxes.item_tax_amount ELSE 0 END, ' . $decimals . ')) AS internal_tax,
                    SUM(ROUND(CASE WHEN sales_items_taxes.tax_type = 1 THEN sales_items_taxes.item_tax_amount ELSE 0 END, ' . $decimals . ')) AS sales_tax
                FROM ' . $this->db->prefixTable('sales_items_taxes') . ' AS sales_items_taxes
                INNER JOIN ' . $this->db->prefixTable('sales') . ' AS sales
                    ON sales.sale_id = sales_items_taxes.sale_id
                INNER JOIN ' . $this->db->prefixTable('sales_items') . ' AS sales_items
                    ON sales_items.sale_id = sales_items_taxes.sale_id AND sales_items.line = sales_items_taxes.line
                WHERE ' . $where . '
                GROUP BY sale_id, item_id, line
            )';

        $this->db->query($sql);

        // Create a temporary table to contain all the payment types and amount
        $sql = 'CREATE TEMPORARY TABLE IF NOT EXISTS ' . $this->db->prefixTable('sales_payments_temp') .
            ' (PRIMARY KEY(sale_id), INDEX(sale_id))
            (
                SELECT payments.sale_id AS sale_id,
                    SUM(CASE WHEN payments.cash_adjustment = 0 THEN payments.payment_amount ELSE 0 END) AS sale_payment_amount,
                    SUM(CASE WHEN payments.cash_adjustment = 1 THEN payments.payment_amount ELSE 0 END) AS sale_cash_adjustment,
                    SUM(payments.cash_refund) AS sale_cash_refund,
                    GROUP_CONCAT(CONCAT(payments.payment_type, " ", (payments.payment_amount - payments.cash_refund)) SEPARATOR ", ") AS payment_type
                FROM ' . $this->db->prefixTable('sales_payments') . ' AS payments
                INNER JOIN ' . $this->db->prefixTable('sales') . ' AS sales
                    ON sales.sale_id = payments.sale_id
                WHERE ' . $where . '
                GROUP BY payments.sale_id
            )';

        $this->db->query($sql);
        $item = model(Item::class);
        $sql = 'CREATE TEMPORARY TABLE IF NOT EXISTS ' . $this->db->prefixTable('sales_items_temp') .
            ' (INDEX(sale_date), INDEX(sale_time), INDEX(sale_id))
            (
                SELECT
                    MAX(DATE(sales.sale_time)) AS sale_date,
                    MAX(sales.sale_time) AS sale_time,
                    sales.sale_id AS sale_id,
                    MAX(sales.sale_status) AS sale_status,
                    MAX(sales.sale_type) AS sale_type,
                    MAX(sales.comment) AS comment,
                    MAX(sales.invoice_number) AS invoice_number,
                    MAX(sales.quote_number) AS quote_number,
                    MAX(sales.customer_id) AS customer_id,
                    MAX(CONCAT(customer_p.first_name, " ", customer_p.last_name)) AS customer_name,
                    MAX(customer_p.first_name) AS customer_first_name,
                    MAX(customer_p.last_name) AS customer_last_name,
                    MAX(customer_p.email) AS customer_email,
                    MAX(customer_p.comments) AS customer_comments,
                    MAX(customer.company_name) AS customer_company_name,
                    MAX(sales.employee_id) AS employee_id,
                    MAX(CONCAT(employee.first_name, " ", employee.last_name)) AS employee_name,
                    items.item_id AS item_id,
                    MAX(' . $item->get_item_name() . ') AS name,
                    MAX(items.item_number) AS item_number,
                    MAX(items.category) AS category,
                    MAX(items.supplier_id) AS supplier_id,
                    MAX(sales_items.quantity_purchased) AS quantity_purchased,
                    MAX(sales_items.item_cost_price) AS item_cost_price,
                    MAX(sales_items.item_unit_price) AS item_unit_price,
                    MAX(sales_items.discount) AS discount,
                    sales_items.discount_type AS discount_type,
                    sales_items.line AS line,
                    MAX(sales_items.serialnumber) AS serialnumber,
                    MAX(sales_items.item_location) AS item_location,
                    MAX(sales_items.description) AS description,
                    MAX(payments.payment_type) AS payment_type,
                    MAX(payments.sale_payment_amount) AS sale_payment_amount,
                    ' . "
                    $sale_subtotal AS subtotal,
                    $tax AS tax,
                    $sale_total AS total,
                    $sale_cost AS cost,
                    ($sale_subtotal - $sale_cost) AS profit
                    " . '
                FROM ' . $this->db->prefixTable('sales_items') . ' AS sales_items
                INNER JOIN ' . $this->db->prefixTable('sales') . ' AS sales
                    ON sales_items.sale_id = sales.sale_id
                INNER JOIN ' . $this->db->prefixTable('items') . ' AS items
                    ON sales_items.item_id = items.item_id
                LEFT OUTER JOIN ' . $this->db->prefixTable('sales_payments_temp') . ' AS payments
                    ON sales_items.sale_id = payments.sale_id
                LEFT OUTER JOIN ' . $this->db->prefixTable('suppliers') . ' AS supplier
                    ON items.supplier_id = supplier.person_id
                LEFT OUTER JOIN ' . $this->db->prefixTable('people') . ' AS customer_p
                    ON sales.customer_id = customer_p.person_id
                LEFT OUTER JOIN ' . $this->db->prefixTable('customers') . ' AS customer
                    ON sales.customer_id = customer.person_id
                LEFT OUTER JOIN ' . $this->db->prefixTable('people') . ' AS employee
                    ON sales.employee_id = employee.person_id
                LEFT OUTER JOIN ' . $this->db->prefixTable('sales_items_taxes_temp') . ' AS sales_items_taxes
                    ON sales_items.sale_id = sales_items_taxes.sale_id AND sales_items.item_id = sales_items_taxes.item_id AND sales_items.line = sales_items_taxes.line
                WHERE ' . $where . '
                GROUP BY sale_id, item_id, line
            )';

        $this->db->query($sql);
    }

    /**
     * Retrieves all sales that are in a suspended state
     */
    public function get_all_suspended(?int $customer_id = null): array
    {
        if ($customer_id == NEW_ENTRY) {
            $query = $this->db->query("SELECT sale_id, case when sale_type = '" . SALE_TYPE_QUOTE . "' THEN quote_number WHEN sale_type = '" . SALE_TYPE_WORK_ORDER . "' THEN work_order_number else sale_id end as doc_id, sale_id as suspended_sale_id, sale_status, sale_time, dinner_table_id, customer_id, employee_id, comment FROM "
                . $this->db->prefixTable('sales') . ' where sale_status = ' . SUSPENDED);
        } else {
            $query = $this->db->query("SELECT sale_id, case when sale_type = '" . SALE_TYPE_QUOTE . "' THEN quote_number WHEN sale_type = '" . SALE_TYPE_WORK_ORDER . "' THEN work_order_number else sale_id end as doc_id, sale_status, sale_time, dinner_table_id, customer_id, employee_id, comment FROM "
                . $this->db->prefixTable('sales') . ' where sale_status = ' . SUSPENDED . ' AND customer_id = ' . $customer_id);
        }

        return $query->getResultArray() ?: [];
    }

    /**
     * Gets the dinner table for the selected sale
     */
    public function get_dinner_table(int $sale_id)    // TODO: this is returning null or the table_id.  We can keep it this way but multiple return types can't be declared until PHP 8.x
    {
        if ($sale_id == NEW_ENTRY) {
            return null;
        }

        $builder = $this->db->table('sales');
        $builder->where('sale_id', $sale_id);

        return $builder->get()->getRow()->dinner_table_id;
    }

    /**
     * Gets the sale type for the selected sale
     */
    public function get_sale_type(int $sale_id)
    {
        $builder = $this->db->table('sales');
        $builder->where('sale_id', $sale_id);

        return $builder->get()->getRow()->sale_type;
    }

    /**
     * Gets the sale status for the selected sale
     */
    public function get_sale_status(int $sale_id): int
    {
        $builder = $this->db->table('sales');
        $builder->where('sale_id', $sale_id);

        return $builder->get()->getRow()->sale_status;
    }

    /**
     * @param int $sale_id
     * @param int $sale_status
     * @return void
     */
    public function update_sale_status(int $sale_id, int $sale_status): void
    {
        $builder = $this->db->table('sales');

        $builder->where('sale_id', $sale_id);
        $builder->update(['sale_status' => $sale_status]);
    }

    /**
     * Gets the quote_number for the selected sale
     */
    public function get_quote_number(int $sale_id): ?string
    {
        $builder = $this->db->table('sales');
        $builder->where('sale_id', $sale_id);

        $row = $builder->get()->getRow();

        if ($row != null) {
            return $row->quote_number;
        }

        return null;
    }

    /**
     * Gets the work order number for the selected sale
     */
    public function get_work_order_number(int $sale_id): ?string
    {
        $builder = $this->db->table('sales');
        $builder->where('sale_id', $sale_id);

        $row = $builder->get()->getRow();

        if ($row != null) {    // TODO: === ?
            return $row->work_order_number;
        }

        return null;
    }

    /**
     * Gets the quote_number for the selected sale
     */
    public function get_comment(int $sale_id): ?string
    {
        $builder = $this->db->table('sales');
        $builder->where('sale_id', $sale_id);

        $row = $builder->get()->getRow();

        if ($row != null) {    // TODO: === ?
            return $row->comment;
        }

        return null;
    }

    /**
     * Gets total of suspended invoices rows
     */
    public function get_suspended_invoice_count(): int
    {
        $builder = $this->db->table('sales');
        $builder->where('invoice_number IS NOT NULL');
        $builder->where('sale_status', SUSPENDED);

        return $builder->countAllResults();
    }

    /**
     * Removes a selected sale from the sales table.
     * This function should only be called for suspended sales that are being restored to the current cart
     */
    public function delete_suspended_sale(int $sale_id): bool
    {
        // Run these queries as a transaction, we want to make sure we do all or nothing
        $this->db->transStart();
        $config = config(OSPOS::class)->settings;

        if ($config['dinner_table_enable']) {
            $dinner_table = model(Dinner_table::class);
            $dinner_table_id = $this->get_dinner_table($sale_id);
            $dinner_table->release($dinner_table_id);
        }

        $this->update_sale_status($sale_id, CANCELED);

        $this->db->transComplete();

        return $this->db->transStatus();
    }

    /**
     * This clears the sales detail for a given sale_id before the detail is re-saved.
     * This allows us to reuse the same sale_id
     */
    public function clear_suspended_sale_detail(int $sale_id): bool
    {
        $this->db->transStart();
        $config = config(OSPOS::class)->settings;

        if ($config['dinner_table_enable']) {
            $dinner_table = model(Dinner_table::class);
            $dinner_table_id = $this->get_dinner_table($sale_id);
            $dinner_table->release($dinner_table_id);
        }

        $builder = $this->db->table('sales_payments');
        $builder->delete(['sale_id' => $sale_id]);

        $builder = $this->db->table('sales_items_taxes');
        $builder->delete(['sale_id' => $sale_id]);

        $builder = $this->db->table('sales_items');
        $builder->delete(['sale_id' => $sale_id]);

        $builder = $this->db->table('sales_taxes');
        $builder->delete(['sale_id' => $sale_id]);

        $this->db->transComplete();

        return $this->db->transStatus();
    }

    /**
     * Gets suspended sale info
     */
    public function get_suspended_sale_info(int $sale_id): ResultInterface
    {
        $builder = $this->db->table('sales');
        $builder->where('sale_id', $sale_id);
        $builder->join('people', 'people.person_id = sales.customer_id', 'LEFT');
        $builder->where('sale_status', SUSPENDED);

        return $builder->get();
    }

    /**
     * @param int $customer_id
     * @param int $sale_id
     * @param float $total_amount
     * @param float $total_amount_used
     */
    private function save_customer_rewards(int $customer_id, int $sale_id, float $total_amount, float $total_amount_used): void
    {
        $config = config(OSPOS::class)->settings;

        if (!empty($customer_id) && $config['customer_reward_enable']) {
            $customer = model(Customer::class);
            $customer_rewards = model(Customer_rewards::class);
            $rewards = model(Rewards::class);

            $package_id = $customer->getInfo($customer_id)->package_id;

            if (!empty($package_id)) {
                $points_percent = $customer_rewards->get_points_percent($package_id);
                $points = $customer->getInfo($customer_id)->points;
                $points = ($points == null ? 0 : $points);
                $points_percent = ($points_percent == null ? 0 : $points_percent);
                $total_amount_earned = ($total_amount * $points_percent / 100);
                $points = $points + $total_amount_earned;

                $customer->update_reward_points_value($customer_id, $points);

                $rewards_data = ['sale_id' => $sale_id, 'earned' => $total_amount_earned, 'used' => $total_amount_used];

                $rewards->save_value($rewards_data);
            }
        }
    }

    /**
     * Creates a temporary table to store the sales_payments data
     *
     * @param string $where
     * @return array
     */
    private function create_temp_table_sales_payments_data(string $where): void
    {
        $builder = $this->db->table('sales_payments AS payments');
        $builder->select([
            'payments.sale_id',
            'SUM(CASE WHEN `payments`.`cash_adjustment` = 0 THEN `payments`.`payment_amount` ELSE 0 END) AS sale_payment_amount',
            'SUM(CASE WHEN `payments`.`cash_adjustment` = 1 THEN `payments`.`payment_amount` ELSE 0 END) AS sale_cash_adjustment',
            'GROUP_CONCAT(CONCAT(`payments`.`payment_type`, " ", (`payments`.`payment_amount` - `payments`.`cash_refund`)) SEPARATOR ", ") AS payment_type'
        ]);
        $builder->join('sales', 'sales.sale_id = payments.sale_id', 'inner');
        $builder->where($where);
        $builder->groupBy('payments.sale_id');

        $sub_query = $builder->getCompiledSelect();
        log_message('error', $sub_query);

        $this->db->query('CREATE TEMPORARY TABLE IF NOT EXISTS '
            . $this->db->prefixTable('sales_payments_temp')
            . ' (PRIMARY KEY(`sale_id`), INDEX(`sale_id`)) AS (' . $sub_query . ')');
    }

    /**
     * Temporary table to store the sales_items_taxes data
     *
     * @param string $where
     * @return \CodeIgniter\Database\BaseBuilder
     */
    private function create_temp_table_sales_items_taxes_data(string $where): void
    {

        $builder = $this->db->table('sales_items_taxes AS sales_items_taxes');
        $builder->select([
            'sales_items_taxes.sale_id AS sale_id',
            'sales_items_taxes.item_id AS item_id',
            'sales_items_taxes.line AS line',
            'SUM(sales_items_taxes.item_tax_amount) AS tax',
            'SUM(CASE WHEN sales_items_taxes.tax_type = 0 THEN sales_items_taxes.item_tax_amount ELSE 0 END) AS internal_tax',
            'SUM(CASE WHEN sales_items_taxes.tax_type = 1 THEN sales_items_taxes.item_tax_amount ELSE 0 END) AS sales_tax'
        ]);
        $builder->join('sales', 'sales.sale_id = sales_items_taxes.sale_id', 'inner');
        $builder->join('sales_items', 'sales_items.sale_id = sales_items_taxes.sale_id AND sales_items.line = sales_items_taxes.line', 'inner');
        $builder->where($where);
        $builder->groupBy(['sale_id', 'item_id', 'line']);
        $sub_query = $builder->getCompiledSelect();

        $this->db->query('CREATE TEMPORARY TABLE IF NOT EXISTS '
            . $this->db->prefixTable('sales_items_taxes_temp')
            . ' (INDEX(sale_id), INDEX(item_id)) ENGINE=MEMORY AS (' . $sub_query . ')');
    }

    /**
     * @param string $search
     * @param array $filters
     * @param BaseBuilder $builder
     * @return void
     */
    private function add_filters_to_query(string $search, array $filters, BaseBuilder $builder): void
    {
        if (!empty($search)) {    // TODO: this is duplicated code.  We should think about refactoring out a method
            if ($filters['is_valid_receipt']) {
                $pieces = explode(' ', $search);
                $builder->where('sales.sale_id', $pieces[1]);
            } else {
                $builder->groupStart();
                // Customer last name
                $builder->like('customer_p.last_name', $search);
                // Customer first name
                $builder->orLike('customer_p.first_name', $search);
                // Customer first and last name
                $builder->orLike('CONCAT(customer_p.first_name, " ", customer_p.last_name)', $search);
                // Customer company name
                $builder->orLike('customer.company_name', $search);
                $builder->groupEnd();
            }
        }

        if ($filters['location_id'] != 'all') {
            $builder->where('sales_items.item_location', $filters['location_id']);
        }

        if ($filters['selected_customer'] != false) {
            $sale_lib = new Sale_lib();
            $builder->where('sales.customer_id', $sale_lib->getCustomer());
        }


        if ($filters['only_invoices']) {
            $builder->where('sales.invoice_number IS NOT NULL');
        }

        if ($filters['only_cash']) {
            $builder->groupStart();
            $builder->like('payments.payment_type', lang('Sales.cash'));
            $builder->orWhere('payments.payment_type IS NULL');
            $builder->groupEnd();
        }

        if ($filters['only_creditcard']) {
            $builder->like('payments.payment_type', lang('Sales.credit'));
        }

        if ($filters['only_due']) {
            $builder->like('payments.payment_type', lang('Sales.due'));
        }

        if ($filters['only_check']) {
            $builder->like('payments.payment_type', lang('Sales.check'));
        }
    }
}