@@ -1301,3 +1301,6 @@ msgstr ""
 
 msgid "You cannot change the password of an unconfirmed e-mail user."
 msgstr "Вы не можете изменить пароль неподтвержденного по e-mail пользователя."
+
+msgid "Unknown file format"
+msgstr "Неизвестный формат файла"
@@ -36,7 +36,7 @@ class MessageSerializer(serializers.ModelSerializer):
         ]
 
     def validate_file(self, file: UploadedFile | None) -> UploadedFile:
-        max_mb_size = 8
+        max_mb_size = 5
         if file and file.size > (max_mb_size << 10 << 10):
             raise ValidationError(
                 _('The file size cannot exceed %(max_mb_size)d MB') % {'max_mb_size': max_mb_size}
@@ -2,6 +2,7 @@ import base64
 import logging
 import subprocess
 import time
+import zipfile
 from datetime import timedelta
 from decimal import Decimal
 from io import BytesIO, StringIO
@@ -10,6 +11,7 @@ from typing import Any, Callable, Literal
 from uuid import UUID
 
 import docx2txt
+import openpyxl
 import filetype
 from django.core.cache import cache
 from django.core.files.base import ContentFile
@@ -23,7 +25,7 @@ from messages.models import Message
 from ml_model.exceptions import (
     InferenceDisabled,
     PaymentRuleNotImplemented,
-    ScraperDoesNotExists,
+    ScraperDoesNotExists, UnknownFileException,
 )
 from ml_model.models import (
     Deployment,
@@ -118,6 +120,19 @@ class InferenceService:
                 raw_file.seek(0)
                 file_buf = BytesIO(raw_file.read())
 
+                if file_extension == 'zip':
+                    file_extension = None
+                    signatures = {
+                        'xlsx': 'xl/workbook.xml'
+                    }
+                    with zipfile.ZipFile(file_buf, 'r') as zip_file:
+                        namelist = zip_file.namelist()
+                        for format_name, required_file in signatures.items():
+                            if required_file in namelist:
+                                file_extension = format_name
+                                break
+                    if not file_extension:
+                        raise UnknownFileException
                 if file_extension in ('png', 'jpg', 'jpeg'):
                     file = BytesIO()
                     normalized_image = ImageModule.open(file_buf)
@@ -128,7 +143,7 @@ class InferenceService:
                     reader = PdfReader(file_buf)
                     for page in reader.pages:
                         file.write(page.extract_text())
-                elif file_extension in ('doc', 'docx', 'zip'):
+                elif file_extension in ('doc', 'docx'):
                     extractors: dict[Literal['doc', 'docx'], Callable[[], str]] = {
                         'doc': lambda: subprocess.Popen(
                             ['antiword', '-w', '0', '-'],
@@ -139,13 +154,20 @@ class InferenceService:
                         .communicate(file_buf.getvalue())
                         .decode(),
                         'docx': lambda: docx2txt.process(file_buf),
-                        'zip': lambda: docx2txt.process(file_buf),
                     }
                     file = StringIO()
                     file.write('Remember this Document included in request:')
                     file.write('[DOCUMENT-START]\n')
                     file.write(extractors[file_extension]())
                     file.write('\n[DOCUMENT-END]')
+                elif file_extension in ('xlsx',):
+                    file = StringIO()
+                    xlsx_file = openpyxl.load_workbook(file_buf)
+                    for sheet_name in xlsx_file.sheetnames:
+                        sheet = xlsx_file[sheet_name]
+                        for row in sheet.iter_rows(values_only=True):
+                            file.write(f'Данные ряда: {row}')
+
             except Exception:
                 file = None
 
@@ -29,3 +29,8 @@ class PaymentRuleNotImplemented(Exception):
 class ScraperDoesNotExists(Exception):
     def __str__(self):
         return _('Scraper does not exists')
+
+
+class UnknownFileException(Exception):
+    def __str__(self):
+        return _('Unknown file format')
\ No newline at end of file