Add "backup" command (#1)

histd.py

@@ -2,12 +2,19 @@
 from datetime import date
 import os
 import subprocess
+import sys
 
 
 def main():
     base_dir = get_base_dir()
     today = date.today()
+
+    if len(sys.argv) == 1:
         edit_note(base_dir, today)
+    elif sys.argv[1] == "backup":
+        backup(base_dir, today)
+    else:
+        print('Command not found')
 
 
 def get_base_dir() -> str:
@@ -22,7 +29,7 @@ def get_base_dir() -> str:
     return base_dir
 
 
-def edit_note(base_dir: str, note_date: date):
+def edit_note(base_dir: str, note_date):
     """
     Creates the required directories and opens a text editor
     so that the user can describe the day.
@@ -46,5 +53,21 @@ def edit_note(base_dir: str, note_date: date):
         print("Your editor returned non-zero exit code")
 
 
+def backup(base_dir: str, current_date):
+    """
+    Creates an archive with all notes
+    """
+    date_str = f'{current_date.year}-{current_date.month:02}-{current_date.day:02}'
+    archive_path = os.path.expanduser(f"~/histd-{date_str}.tar.xz")
+    cmd = ["tar", "cfJ", archive_path, "."]
+    try:
+        subprocess.run(cmd, check=True, cwd=base_dir)
+        print(f'Saved to {archive_path}')
+    except FileNotFoundError:
+        print("Error: I can't find tar program")
+    except subprocess.CalledProcessError:
+        print("Archiver returned non-zero exit code")
+
+
 if __name__ == '__main__':
     main()

readme.md

@@ -34,10 +34,9 @@ sudo curl -o /usr/local/bin/histd "https://raw.githubusercontent.com/ordinary-de
 To create a new note, you can simply type `histd` in the terminal.
 
 ## Backup
-To create an archive of all notes, run the following commands:
-```sh
-cd ~/.local/share
-tar -cJf histd.tar.xz histd
+To create an archive of all notes, run the following command:
+```bash
+histd backup
 ```
 
 ## Merge all notes