diff --git a/REST/functions.php b/REST/functions.php
index 325a428d..3aba624e 100644
--- a/REST/functions.php
+++ b/REST/functions.php
@@ -237,4 +237,270 @@ function brecho($msg) {
     echo '<br><br>';
     var_dump($msg);
     echo '<br><br>';
+}
+
+function createCSVReports()
+{
+    {
+        $db = $GLOBALS['db'];
+        $exportDir = __DIR__ . "/export";
+
+        $jobs = [
+            [
+                'sql'      => "
+                SELECT
+    i.document_no,
+    i.register_date,
+    i.parent_name,
+    p.code,
+    p.name,
+    CASE p.group_ks
+        WHEN 1 THEN 'Towar handlowy'
+        WHEN 2 THEN 'Wyrób gotowy'
+        WHEN 3 THEN 'Usługi'
+        WHEN '530547ef-2dea-7622-843b-59d745b14c64' THEN 'Materiały'
+        WHEN '8451dded-710f-51c2-7ed1-60a377eaa7b7' THEN 'Surowce'
+        ELSE 'Nieznane'
+    END AS group_ks,
+    GROUP_CONCAT(c.name ORDER BY cb.position SEPARATOR ' | ') AS category,
+    ii.quantity,
+    ii.price_netto
+FROM ecminvoiceouts AS i
+INNER JOIN ecminvoiceoutitems AS ii ON i.id = ii.ecminvoiceout_id
+INNER JOIN ecmproducts AS p ON ii.ecmproduct_id = p.id
+LEFT JOIN ecmproductcategories_bean AS cb ON cb.bean_id COLLATE utf8_general_ci = p.id COLLATE utf8_general_ci 
+    AND cb.bean_name = 'EcmProducts' 
+    AND cb.deleted = 0
+LEFT JOIN ecmproductcategories AS c ON c.id = cb.ecmproductcategory_id
+WHERE i.type = 'normal' AND YEAR(i.register_date) = 2024
+GROUP BY
+    i.document_no,
+    i.register_date,
+    i.parent_name,
+    p.code,
+    p.name,
+    p.group_ks,
+    ii.quantity,
+    ii.price_netto
+ORDER BY i.register_date DESC;
+            ",
+                'filename' => 'invoices_2024.csv',
+            ],
+            [
+                'sql'      => "
+                SELECT
+    i.document_no,
+    i.register_date,
+    i.parent_name,
+    p.code,
+    p.name,
+    CASE p.group_ks
+        WHEN 1 THEN 'Towar handlowy'
+        WHEN 2 THEN 'Wyrób gotowy'
+        WHEN 3 THEN 'Usługi'
+        WHEN '530547ef-2dea-7622-843b-59d745b14c64' THEN 'Materiały'
+        WHEN '8451dded-710f-51c2-7ed1-60a377eaa7b7' THEN 'Surowce'
+        ELSE 'Nieznane'
+    END AS group_ks,
+    GROUP_CONCAT(c.name ORDER BY cb.position SEPARATOR ' | ') AS category,
+    ii.quantity,
+    ii.price_netto
+FROM ecminvoiceouts AS i
+INNER JOIN ecminvoiceoutitems AS ii ON i.id = ii.ecminvoiceout_id
+INNER JOIN ecmproducts AS p ON ii.ecmproduct_id = p.id
+LEFT JOIN ecmproductcategories_bean AS cb ON cb.bean_id COLLATE utf8_general_ci = p.id COLLATE utf8_general_ci 
+    AND cb.bean_name = 'EcmProducts' 
+    AND cb.deleted = 0
+LEFT JOIN ecmproductcategories AS c ON c.id = cb.ecmproductcategory_id
+WHERE i.type = 'normal' AND YEAR(i.register_date) = 2025
+GROUP BY
+    i.document_no,
+    i.register_date,
+    i.parent_name,
+    p.code,
+    p.name,
+    p.group_ks,
+    ii.quantity,
+    ii.price_netto
+ORDER BY i.register_date DESC;
+            ",
+                'filename' => 'invoices_2025.csv',
+            ],
+            [
+                'sql'      => "
+SELECT
+    i.document_no,
+    i.register_date,
+    i.parent_name,
+    p.code,
+    p.name,
+    CASE p.group_ks
+        WHEN 1 THEN 'Towar handlowy'
+        WHEN 2 THEN 'Wyrób gotowy'
+        WHEN 3 THEN 'Usługi'
+        WHEN '530547ef-2dea-7622-843b-59d745b14c64' THEN 'Materiały'
+        WHEN '8451dded-710f-51c2-7ed1-60a377eaa7b7' THEN 'Surowce'
+        ELSE 'Nieznane'
+    END AS group_ks,
+    GROUP_CONCAT(c.name ORDER BY cb.position SEPARATOR ' | ') AS category,
+    ii.quantity,
+    ii.price_netto
+FROM ecommerce_invoices AS i
+INNER JOIN ecommerce_invoices_products AS ii ON i.id = ii.invoice_id
+INNER JOIN ecmproducts AS p ON ii.ecmproduct_id = p.id
+LEFT JOIN ecmproductcategories_bean AS cb ON cb.bean_id COLLATE utf8_general_ci = p.id COLLATE utf8_general_ci 
+    AND cb.bean_name = 'EcmProducts' 
+    AND cb.deleted = 0
+LEFT JOIN ecmproductcategories AS c ON c.id = cb.ecmproductcategory_id
+WHERE i.type = 'normal' AND YEAR(i.register_date) = 2024
+GROUP BY
+    i.document_no,
+    i.register_date,
+    i.parent_name,
+    p.code,
+    p.name,
+    p.group_ks,
+    ii.quantity,
+    ii.price_netto
+ORDER BY i.register_date DESC;
+            ",
+                'filename' => 'ecommerce_invoices_2024.csv',
+            ],
+            [
+                'sql'      => "
+SELECT
+    i.document_no,
+    i.register_date,
+    i.parent_name,
+    p.code,
+    p.name,
+    CASE p.group_ks
+        WHEN 1 THEN 'Towar handlowy'
+        WHEN 2 THEN 'Wyrób gotowy'
+        WHEN 3 THEN 'Usługi'
+        WHEN '530547ef-2dea-7622-843b-59d745b14c64' THEN 'Materiały'
+        WHEN '8451dded-710f-51c2-7ed1-60a377eaa7b7' THEN 'Surowce'
+        ELSE 'Nieznane'
+    END AS group_ks,
+    GROUP_CONCAT(c.name ORDER BY cb.position SEPARATOR ' | ') AS category,
+    ii.quantity,
+    ii.price_netto
+FROM ecommerce_invoices AS i
+INNER JOIN ecommerce_invoices_products AS ii ON i.id = ii.invoice_id
+INNER JOIN ecmproducts AS p ON ii.ecmproduct_id = p.id
+LEFT JOIN ecmproductcategories_bean AS cb ON cb.bean_id COLLATE utf8_general_ci = p.id COLLATE utf8_general_ci 
+    AND cb.bean_name = 'EcmProducts' 
+    AND cb.deleted = 0
+LEFT JOIN ecmproductcategories AS c ON c.id = cb.ecmproductcategory_id
+WHERE i.type = 'normal' AND YEAR(i.register_date) = 2025
+GROUP BY
+    i.document_no,
+    i.register_date,
+    i.parent_name,
+    p.code,
+    p.name,
+    p.group_ks,
+    ii.quantity,
+    ii.price_netto
+ORDER BY i.register_date DESC;
+            ",
+                'filename' => 'ecommerce_invoices_2025.csv',
+            ],
+            [
+                'sql'      => "
+                    SELECT
+                        ss.product_code,
+                        ss.product_name,
+                        COALESCE(NULLIF(ss.quantity, ''), 0) AS quantity,
+                        s.name
+                    FROM ecmstockstates AS ss
+                    JOIN ecmstocks AS s ON ss.stock_id = s.id
+                    ORDER BY quantity + 0 DESC;",
+                'filename' => 'stocks.csv',
+            ],
+        ];
+
+        $report = [];
+        foreach ($jobs as $job) {
+            $sql      = $job['sql'];
+            $filename = $job['filename'];
+            $headers  = isset($job['headers']) ? $job['headers'] : null;
+
+            $res = $db->query($sql);
+            $fullpath = rtrim($exportDir, "/") . "/" . $filename;
+
+            $result = exportToCSVFile($res, $fullpath, $headers, ';', true);
+
+            if ($result['ok']) {
+                $report[] = "OK  → {$result['path']}  (wiersze: {$result['rows']})".PHP_EOL;
+            } else {
+                $report[] = "ERR → {$result['path']}  ({$result['error']})".PHP_EOL;;
+            }
+        }
+
+        echo implode("\n", $report);
+        exit;
+    }
+}
+function exportToCSVFile($res, $fullpath, array $headers = null, $delimiter = ';', $withBom = true)
+{
+    $db = $GLOBALS['db'];
+
+    $dir = dirname($fullpath);
+    if (!is_dir($dir)) {
+        if (!@mkdir($dir, 0775, true)) {
+            return ['ok'=>false, 'path'=>$fullpath, 'rows'=>0, 'error'=>"Nie mogę utworzyć katalogu: $dir"];
+        }
+    }
+    if (!is_writable($dir)) {
+        return ['ok'=>false, 'path'=>$fullpath, 'rows'=>0, 'error'=>"Katalog nie jest zapisywalny: $dir"];
+    }
+
+    $fp = @fopen($fullpath, 'w');
+    if ($fp === false) {
+        return ['ok'=>false, 'path'=>$fullpath, 'rows'=>0, 'error'=>"Nie mogę otworzyć pliku do zapisu: $fullpath"];
+    }
+
+    // BOM dla Excel PL
+    if ($withBom) {
+        fwrite($fp, "\xEF\xBB\xBF");
+    }
+
+    // pobierz pierwszy wiersz, by ewentualnie zbudować nagłówki
+    $first = $db->fetchByAssoc($res);
+
+    // brak danych → pusty plik z ewentualnym nagłówkiem (jeśli podany ręcznie)
+    if (!$first) {
+        if ($headers !== null) {
+            fputcsv($fp, $headers, $delimiter);
+        }
+        fclose($fp);
+        return ['ok'=>true, 'path'=>$fullpath, 'rows'=>0, 'error'=>null];
+    }
+
+    // dynamiczne nagłówki, jeśli nie podano
+    if ($headers === null) {
+        $headers = array_keys($first);
+    }
+
+    // wypisz nagłówki
+    fputcsv($fp, $headers, $delimiter);
+
+    // zapisz pierwszy wiersz w kolejności nagłówków
+    $line = [];
+    foreach ($headers as $h) { $line[] = isset($first[$h]) ? $first[$h] : ''; }
+    fputcsv($fp, $line, $delimiter);
+    $count = 1;
+
+    // pozostałe wiersze
+    while ($row = $db->fetchByAssoc($res)) {
+        $line = [];
+        foreach ($headers as $h) { $line[] = isset($row[$h]) ? $row[$h] : ''; }
+        fputcsv($fp, $line, $delimiter);
+        $count++;
+    }
+
+    fclose($fp);
+    $chmod_ok = @chmod($fullpath, 0664);
+    return ['ok'=>true, 'path'=>$fullpath, 'rows'=>$count, 'chmod'=>$chmod_ok, 'error'=>null];
 }
\ No newline at end of file
diff --git a/REST/index.php b/REST/index.php
index e734feb3..06c5bdb2 100644
--- a/REST/index.php
+++ b/REST/index.php
@@ -73,4 +73,7 @@ switch ($_GET["action"]) {
         $db->query("UPDATE ecmproducts SET exportedAt='$exportedAt' WHERE id='$id'");
         break;
     }
+    case 'createCSVReports':
+        createCSVReports();
+        break;
 }
\ No newline at end of file