<?php
/* Copyright (C) 2026 ZUGFeRD Import Module
 *
 * 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.
 */

/**
 * \file    importline.class.php
 * \ingroup importzugferd
 * \brief   Class for import line items
 */

/**
 * Class ImportLine
 * Manages line items for ZUGFeRD imports
 */
class ImportLine
{
    /**
     * @var DoliDB Database handler
     */
    public $db;

    /**
     * @var string Error message
     */
    public $error;

    /**
     * @var array Error messages
     */
    public $errors = array();

    /**
     * @var int ID
     */
    public $id;

    /**
     * @var int ID (alias)
     */
    public $rowid;

    /**
     * @var int Import ID reference
     */
    public $fk_import;

    /**
     * @var string Line ID from ZUGFeRD
     */
    public $line_id;

    /**
     * @var string Supplier article reference
     */
    public $supplier_ref;

    /**
     * @var string Product name from ZUGFeRD
     */
    public $product_name;

    /**
     * @var string Additional description
     */
    public $description;

    /**
     * @var float Quantity
     */
    public $quantity;

    /**
     * @var string UN/ECE unit code
     */
    public $unit_code;

    /**
     * @var float Unit price (calculated)
     */
    public $unit_price;

    /**
     * @var float Original unit price
     */
    public $unit_price_raw;

    /**
     * @var float Basis quantity for price
     */
    public $basis_quantity;

    /**
     * @var string Basis quantity unit
     */
    public $basis_quantity_unit;

    /**
     * @var float Line total (net)
     */
    public $line_total;

    /**
     * @var float Tax percentage
     */
    public $tax_percent;

    /**
     * @var string EAN/GTIN
     */
    public $ean;

    /**
     * @var int Assigned Dolibarr product ID
     */
    public $fk_product;

    /**
     * @var string Match method description
     */
    public $match_method;

    /**
     * @var int Creation timestamp
     */
    public $date_creation;

    /**
     * @var string Table name
     */
    public $table_element = 'importzugferd_import_line';

    /**
     * Constructor
     *
     * @param DoliDB $db Database handler
     */
    public function __construct($db)
    {
        $this->db = $db;
    }

    /**
     * Create line in database
     *
     * @param User $user User creating the line
     * @return int >0 if OK, <0 if KO
     */
    public function create($user)
    {
        $this->date_creation = dol_now();

        $sql = "INSERT INTO " . MAIN_DB_PREFIX . $this->table_element . " (";
        $sql .= "fk_import, line_id, supplier_ref, product_name, description,";
        $sql .= "quantity, unit_code, unit_price, unit_price_raw, basis_quantity, basis_quantity_unit,";
        $sql .= "line_total, tax_percent, ean, fk_product, match_method, date_creation";
        $sql .= ") VALUES (";
        $sql .= ((int) $this->fk_import) . ",";
        $sql .= "'" . $this->db->escape($this->line_id) . "',";
        $sql .= "'" . $this->db->escape($this->supplier_ref) . "',";
        $sql .= "'" . $this->db->escape($this->product_name) . "',";
        $sql .= "'" . $this->db->escape($this->description) . "',";
        $sql .= ((float) $this->quantity) . ",";
        $sql .= "'" . $this->db->escape($this->unit_code) . "',";
        $sql .= ((float) $this->unit_price) . ",";
        $sql .= ((float) $this->unit_price_raw) . ",";
        $sql .= ((float) $this->basis_quantity) . ",";
        $sql .= "'" . $this->db->escape($this->basis_quantity_unit) . "',";
        $sql .= ((float) $this->line_total) . ",";
        $sql .= ((float) $this->tax_percent) . ",";
        $sql .= "'" . $this->db->escape($this->ean) . "',";
        $sql .= ($this->fk_product > 0 ? ((int) $this->fk_product) : "NULL") . ",";
        $sql .= "'" . $this->db->escape($this->match_method) . "',";
        $sql .= "'" . $this->db->idate($this->date_creation) . "'";
        $sql .= ")";

        $resql = $this->db->query($sql);
        if ($resql) {
            $this->id = $this->db->last_insert_id(MAIN_DB_PREFIX . $this->table_element);
            $this->rowid = $this->id;
            return $this->id;
        } else {
            $this->error = $this->db->lasterror();
            return -1;
        }
    }

    /**
     * Fetch line from database
     *
     * @param int $id Line ID
     * @return int >0 if OK, <0 if KO
     */
    public function fetch($id)
    {
        $sql = "SELECT rowid, fk_import, line_id, supplier_ref, product_name, description,";
        $sql .= " quantity, unit_code, unit_price, unit_price_raw, basis_quantity, basis_quantity_unit,";
        $sql .= " line_total, tax_percent, ean, fk_product, match_method, date_creation";
        $sql .= " FROM " . MAIN_DB_PREFIX . $this->table_element;
        $sql .= " WHERE rowid = " . ((int) $id);

        $resql = $this->db->query($sql);
        if ($resql) {
            if ($this->db->num_rows($resql)) {
                $obj = $this->db->fetch_object($resql);
                $this->id = $obj->rowid;
                $this->rowid = $obj->rowid;
                $this->fk_import = $obj->fk_import;
                $this->line_id = $obj->line_id;
                $this->supplier_ref = $obj->supplier_ref;
                $this->product_name = $obj->product_name;
                $this->description = $obj->description;
                $this->quantity = $obj->quantity;
                $this->unit_code = $obj->unit_code;
                $this->unit_price = $obj->unit_price;
                $this->unit_price_raw = $obj->unit_price_raw;
                $this->basis_quantity = $obj->basis_quantity;
                $this->basis_quantity_unit = $obj->basis_quantity_unit;
                $this->line_total = $obj->line_total;
                $this->tax_percent = $obj->tax_percent;
                $this->ean = $obj->ean;
                $this->fk_product = $obj->fk_product;
                $this->match_method = $obj->match_method;
                $this->date_creation = $this->db->jdate($obj->date_creation);
                return 1;
            }
            return 0;
        }
        $this->error = $this->db->lasterror();
        return -1;
    }

    /**
     * Update line in database
     *
     * @param User $user User making the update
     * @return int >0 if OK, <0 if KO
     */
    public function update($user)
    {
        $sql = "UPDATE " . MAIN_DB_PREFIX . $this->table_element . " SET";
        $sql .= " fk_product = " . ($this->fk_product > 0 ? ((int) $this->fk_product) : "NULL") . ",";
        $sql .= " match_method = '" . $this->db->escape($this->match_method) . "'";
        $sql .= " WHERE rowid = " . ((int) $this->id);

        $resql = $this->db->query($sql);
        if ($resql) {
            return 1;
        }
        $this->error = $this->db->lasterror();
        return -1;
    }

    /**
     * Delete line from database
     *
     * @param User $user User deleting the line
     * @return int >0 if OK, <0 if KO
     */
    public function delete($user)
    {
        $sql = "DELETE FROM " . MAIN_DB_PREFIX . $this->table_element;
        $sql .= " WHERE rowid = " . ((int) $this->id);

        $resql = $this->db->query($sql);
        if ($resql) {
            return 1;
        }
        $this->error = $this->db->lasterror();
        return -1;
    }

    /**
     * Fetch all lines for an import
     *
     * @param int $fk_import Import ID
     * @return array|int Array of ImportLine objects or <0 if error
     */
    public function fetchAllByImport($fk_import)
    {
        $lines = array();

        $sql = "SELECT rowid FROM " . MAIN_DB_PREFIX . $this->table_element;
        $sql .= " WHERE fk_import = " . ((int) $fk_import);
        $sql .= " ORDER BY rowid ASC";

        $resql = $this->db->query($sql);
        if ($resql) {
            while ($obj = $this->db->fetch_object($resql)) {
                $line = new ImportLine($this->db);
                $line->fetch($obj->rowid);
                $lines[] = $line;
            }
            return $lines;
        }
        $this->error = $this->db->lasterror();
        return -1;
    }

    /**
     * Delete all lines for an import
     *
     * @param int $fk_import Import ID
     * @return int >0 if OK, <0 if KO
     */
    public function deleteAllByImport($fk_import)
    {
        $sql = "DELETE FROM " . MAIN_DB_PREFIX . $this->table_element;
        $sql .= " WHERE fk_import = " . ((int) $fk_import);

        $resql = $this->db->query($sql);
        if ($resql) {
            return 1;
        }
        $this->error = $this->db->lasterror();
        return -1;
    }

    /**
     * Check if all lines for an import have products assigned
     *
     * @param int $fk_import Import ID
     * @return bool True if all lines have products, false otherwise
     */
    public function allLinesHaveProducts($fk_import)
    {
        $sql = "SELECT COUNT(*) as total, SUM(CASE WHEN fk_product IS NOT NULL AND fk_product > 0 THEN 1 ELSE 0 END) as with_product";
        $sql .= " FROM " . MAIN_DB_PREFIX . $this->table_element;
        $sql .= " WHERE fk_import = " . ((int) $fk_import);

        $resql = $this->db->query($sql);
        if ($resql) {
            $obj = $this->db->fetch_object($resql);
            return ($obj->total > 0 && $obj->total == $obj->with_product);
        }
        return false;
    }

    /**
     * Count lines without product assignment
     *
     * @param int $fk_import Import ID
     * @return int Number of lines without product
     */
    public function countLinesWithoutProduct($fk_import)
    {
        $sql = "SELECT COUNT(*) as cnt FROM " . MAIN_DB_PREFIX . $this->table_element;
        $sql .= " WHERE fk_import = " . ((int) $fk_import);
        $sql .= " AND (fk_product IS NULL OR fk_product = 0)";

        $resql = $this->db->query($sql);
        if ($resql) {
            $obj = $this->db->fetch_object($resql);
            return (int) $obj->cnt;
        }
        return 0;
    }

    /**
     * Set product for this line
     *
     * @param int $fk_product Product ID
     * @param string $match_method How product was assigned
     * @param User $user User making the change
     * @return int >0 if OK, <0 if KO
     */
    public function setProduct($fk_product, $match_method, $user)
    {
        $this->fk_product = $fk_product;
        $this->match_method = $match_method;
        return $this->update($user);
    }
}