Refactor shared script helpers

view_metadata.py

@@ -13,18 +13,10 @@ from __future__ import annotations
 import subprocess
 import sys
 from pathlib import Path
-from shutil import which
 
-
-def first_file_from_path(path: Path) -> Path | None:
-    path = path.expanduser()
-    if path.is_file():
-        return path.resolve()
-    if path.is_dir():
-        for child in sorted(path.rglob("*"), key=lambda item: str(item).lower()):
-            if child.is_file():
-                return child.resolve()
-    return None
+from tools.console import pause_if_interactive
+from tools.exiftool import require_exiftool
+from tools.filesystem import first_file_from_path
 
 
 def choose_file(args: list[str]) -> Path | None:
@@ -35,22 +27,15 @@ def choose_file(args: list[str]) -> Path | None:
     return None
 
 
-def pause_if_interactive() -> None:
-    if sys.stdin.isatty():
-        try:
-            input("\nPress Enter to close...")
-        except EOFError:
-            pass
-
-
 def run(argv: list[str]) -> int:
     if len(argv) < 2:
         print("Usage: python3 view_metadata.py path/to/file/or/directory [...]")
         return 2
 
-    exiftool = which("exiftool")
-    if exiftool is None:
-        print("exiftool was not found on PATH.")
+    try:
+        exiftool = require_exiftool()
+    except RuntimeError as exc:
+        print(exc)
         return 1
 
     file_path = choose_file(argv[1:])