Fix single file download to an output path without a directory

mergin/client.py

@@ -1274,7 +1274,7 @@ def get_file_diff(self, project_dir, file_path, output_diff, version_from, versi
             diffs.append(mp.fpath_cache(file_history["history"][v]["diff"]["path"], v))
 
         # concatenate diffs, if needed
-        output_dir = os.path.dirname(output_diff)
+        output_dir = os.path.abspath(os.path.dirname(output_diff))
         if len(diffs) >= 1:
             os.makedirs(output_dir, exist_ok=True)
             if len(diffs) > 1:

mergin/client_pull.py

@@ -182,7 +182,7 @@ def __init__(self, dest_file, downloaded_items: typing.List[DownloadQueueItem],
 
     def from_chunks(self):
         """Merges downloaded chunks into a single file at dest_file path"""
-        file_dir = os.path.dirname(self.dest_file)
+        file_dir = os.path.abspath(os.path.dirname(self.dest_file))
         os.makedirs(file_dir, exist_ok=True)
 
         with open(self.dest_file, "wb") as final:
@@ -437,7 +437,7 @@ def apply(self, directory, mp: Union[MerginProject, "DownloadScratchContext"]):
             file_dir = os.path.dirname(os.path.normpath(os.path.join(directory, self.file_path)))
             dest_file_path = os.path.join(file_dir, basename)
         else:
-            file_dir = os.path.dirname(os.path.normpath(self.destination_file))
+            file_dir = os.path.dirname(os.path.abspath(self.destination_file))
             dest_file_path = self.destination_file
         os.makedirs(file_dir, exist_ok=True)
 

mergin/report.py

@@ -284,7 +284,7 @@ def create_report(mc, directory, since, to, out_file):
             raise ClientError("Reporting failed, please check log for details")
 
     # export report to csv file
-    out_dir = os.path.dirname(out_file)
+    out_dir = os.path.abspath(os.path.dirname(out_file))
     os.makedirs(out_dir, exist_ok=True)
     with open(out_file, "w", newline="") as f_csv:
         writer = csv.DictWriter(f_csv, fieldnames=headers)

mergin/test/test_client_pull.py

@@ -3,7 +3,7 @@
 import pytest
 from mergin.common import DeltaChangeType, CHUNK_SIZE
 from mergin.models import ProjectDeltaChange, ProjectDeltaItemDiff
-from mergin.client_pull import get_download_diff_files, get_download_items
+from mergin.client_pull import DownloadQueueItem, UpdateTask, get_download_diff_files, get_download_items
 
 
 def test_get_diff_download_files():
@@ -74,3 +74,20 @@ def test_get_download_items():
         assert items[0].file_path == "base.gpkg"
         assert items[0].size == 50
         assert items[0].download_file_path == os.path.join(tmp_dir, "diff_file.0")
+
+
+@pytest.mark.parametrize("output_file", ["out.txt", "./out.txt"])
+def test_update_task_apply_to_bare_filename(output_file, monkeypatch):
+    """Single file download must accept an output path without a directory part."""
+    with tempfile.TemporaryDirectory() as tmp_dir:
+        chunk_path = os.path.join(tmp_dir, "data.txt.0")
+        with open(chunk_path, "wb") as f:
+            f.write(b"content")
+        item = DownloadQueueItem("data.txt", 7, "v1", False, 0, chunk_path)
+        task = UpdateTask("data.txt", [item], destination_file=output_file)
+
+        monkeypatch.chdir(tmp_dir)
+        task.apply(tmp_dir, None)
+
+        with open(os.path.join(tmp_dir, "out.txt"), "rb") as f:
+            assert f.read() == b"content"