can now specify output filepath and output filename defaults to time

Author: datsom1

db_diff/cli.py

@@ -1,12 +1,14 @@
 import click
 import json as std_json
 import time as time_module
+import os
+import datetime
 from . import load_csv, load_json, compare, human_text
 
 @click.command(
     context_settings={"help_option_names": ["-h", "--help"]},
     help="Compare the differences between two CSV or JSON files to find differences.",
-    epilog="Example: db-diff old.csv new.csv --key=Id --output=jsonfile --outputfile=diff.json",
+    epilog="Example: db-diff old.csv new.csv --key=Id --output=jsonfile --outfilename=diff.json",
 )
 @click.argument(
     "previous",
@@ -29,12 +31,19 @@
     help="Output format. Available: (readable|json|jsonfile).",
 )
 @click.option(
-    "--outputfile",
+    "--outfilename",
     "output_file",
     type=click.Path(file_okay=True, dir_okay=False, writable=True, resolve_path=True),
     default=None,
     help="File to write JSON output to (only used with --output=jsonfile).",
 )
+@click.option(
+    "--outfilepath",
+    "output_path",
+    type=click.Path(file_okay=False, dir_okay=True, writable=True, resolve_path=True),
+    default=None,
+    help="Directory to save the output file (only used with --output=jsonfile).",
+)
 @click.option(
     "--showunchanged",
     "show_unchanged",
@@ -63,19 +72,23 @@
 @click.version_option()
 def cli(
     previous, current, key, input_format,
-    show_unchanged, encoding, show_time, output, output_file
+    show_unchanged, encoding, show_time, output, output_file, output_path
 ):
     """Compare the differences between two CSV or JSON files."""
     dialect = {
         "csv": "excel",
         "tsv": "excel-tab",
     }
 
-    if output == "jsonfile" and not output_file:
-        raise click.UsageError(
-            "--outputfile must be specified when --output=jsonfile",
-            ctx=click.get_current_context(),
-        )
+    # Set default output filename if needed
+    if output == "jsonfile":
+        if not output_file:
+            timestamp = datetime.datetime.now().strftime("%Y-%m-%d_%H-%M-%S")
+            output_file = f"{timestamp}_diffs.json"
+        if output_path:
+            if not os.path.isdir(output_path):
+                raise click.ClickException(f"Output path '{output_path}' does not exist or is not a directory.")
+            output_file = os.path.join(output_path, os.path.basename(output_file))
 
     def sniff_key_column(filename, input_format):
         # Only for CSV/TSV/JSON