Misc: Add CLI interface to create-change-note.py

This may be useful when working in "the other place", where the VSCode
task may not be easily accessible. (Also, some people may just prefer to
use a CLI interface.)

misc/scripts/create-change-note.py

@@ -9,6 +9,8 @@
 # - The name of the change note (in kebab-case)
 # - The category of the change (see https://github.com/github/codeql/blob/main/docs/change-notes.md#change-categories).
 
+# Alternatively, run without arguments for interactive mode.
+
 # The change note will be created in the `{language}/ql/{subdir}/change-notes` directory, where `subdir` is either `src` or `lib`.
 
 # The format of the change note filename is `{current_date}-{change_note_name}.md` with the date in
@@ -17,11 +19,111 @@
 import sys
 import os
 
-# Read the given arguments
-language = sys.argv[1]
-subdir = sys.argv[2]
-change_note_name = sys.argv[3]
-change_category = sys.argv[4]
+LANGUAGES = [
+    "actions",
+    "cpp",
+    "csharp",
+    "go",
+    "java",
+    "javascript",
+    "python",
+    "ruby",
+    "rust",
+    "swift",
+]
+
+SUBDIRS = {
+    "src": "query",
+    "lib": "library",
+}
+
+CATEGORIES_QUERY = [
+    "breaking",
+    "deprecated",
+    "newQuery",
+    "queryMetadata",
+    "majorAnalysis",
+    "minorAnalysis",
+    "fix",
+]
+
+CATEGORIES_LIBRARY = [
+    "breaking",
+    "deprecated",
+    "feature",
+    "majorAnalysis",
+    "minorAnalysis",
+    "fix",
+]
+
+
+def is_subsequence(needle: str, haystack: str) -> bool:
+    """Check if needle is a subsequence of haystack (case-insensitive)."""
+    it = iter(haystack.lower())
+    return all(c in it for c in needle.lower())
+
+
+def pick_option(prompt: str, options: list[str]) -> str:
+    """Display options and let the user pick by subsequence match."""
+    print(f"\n{prompt}")
+    print(f"  Options: {', '.join(options)}")
+    while True:
+        choice = input("Choice: ").strip()
+        if not choice:
+            continue
+        # Try exact match first
+        for o in options:
+            if o.lower() == choice.lower():
+                return o
+        # Try subsequence match
+        matches = [o for o in options if is_subsequence(choice, o)]
+        if len(matches) == 1:
+            return matches[0]
+        if len(matches) > 1:
+            print(f"  Ambiguous: {', '.join(matches)}")
+            continue
+        print(f"  No match for '{choice}'. Try again.")
+
+
+def prompt_string(prompt: str) -> str:
+    """Prompt the user for a string value."""
+    while True:
+        value = input(f"\n{prompt}: ").strip()
+        if value:
+            return value
+        print("Value cannot be empty.")
+
+
+def interactive_mode() -> tuple[str, str, str, str]:
+    """Run interactive mode to gather all required inputs."""
+    print("=== Create Change Note (Interactive Mode) ===")
+
+    language = pick_option("Select language:", LANGUAGES)
+    subdir = pick_option("Change type:", list(SUBDIRS.keys()))
+
+    change_note_name = prompt_string("Short name (kebab-case)")
+
+    if subdir == "src":
+        categories = CATEGORIES_QUERY
+    else:
+        categories = CATEGORIES_LIBRARY
+    change_category = pick_option("Select category:", categories)
+
+    return language, subdir, change_note_name, change_category
+
+
+# Check if running in interactive mode (no arguments) or with arguments
+if len(sys.argv) == 1:
+    language, subdir, change_note_name, change_category = interactive_mode()
+elif len(sys.argv) == 5:
+    language = sys.argv[1]
+    subdir = sys.argv[2]
+    change_note_name = sys.argv[3]
+    change_category = sys.argv[4]
+else:
+    print("Usage: create-change-note.py [language subdir name category]")
+    print("       Run without arguments for interactive mode.")
+    sys.exit(1)
 
 # Find the root of the repository. The current script should be located in `misc/scripts`.
 root = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))