get header

csst_dfs_client/__init__.py

@@ -44,4 +44,10 @@ def read_file(file_path: str) -> BytesIO:
             iobytes_io.seek(0)
         except OSError:
             raise AppError("Failed to read file.")
-        return iobytes_io
\ No newline at end of file
+        return iobytes_io
+    
+def get_free_header(file_path: str) -> dict:
+    result = request.get(f"/api/common/header?file_path={file_path}")
+    if result.success:
+        return result.data
+    raise AppError("Failed to get free header. Reason: " + result.message)
\ No newline at end of file

tests/test_common.py

 import unittest
 import os
-from csst_dfs_client import download_file, read_file
+from csst_dfs_client import download_file, read_file, get_free_header
 
 class CommonTestCase(unittest.TestCase):
     def setUp(self):
@@ -33,4 +33,8 @@ class CommonTestCase(unittest.TestCase):
         
         assert os.path.exists(tmp_file_path)
         os.remove(tmp_file_path)
+
+    def test_get_free_header(self):
+        header_items = get_free_header(file_path= "L0/MSC/routine/SCI/10109100157991/CSST_MSC_MS_SCI_20240609181116_20240609181347_10109100157991_27_L0_V01.fits")
+        print(header_items)     
         
\ No newline at end of file