implemented functions

app/create_file.py

@@ -1 +1,84 @@
-# write your code here
+import os
+import sys
+from datetime import datetime
+
+
+def parse_arguments(arguments: list[str]) -> tuple[list[str], str | None]:
+    directories = []
+    file_name = None
+    current_flag = None
+
+    for argument in arguments:
+        if argument in ("-d", "-f"):
+            current_flag = argument
+            continue
+
+        if current_flag == "-d":
+            directories.append(argument)
+            continue
+
+        if current_flag == "-f" and file_name is None:
+            file_name = argument
+
+    return directories, file_name
+
+
+def read_content_lines() -> list[str]:
+    content_lines = []
+
+    while True:
+        line = input("Enter content line: ")
+        if line == "stop":
+            break
+        content_lines.append(line)
+
+    return content_lines
+
+
+def build_content_block(content_lines: list[str]) -> str:
+    timestamp = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
+    numbered_lines = [
+        f"{line_number} {line}"
+        for line_number, line in enumerate(content_lines, start=1)
+    ]
+
+    return "\n".join([timestamp, *numbered_lines])
+
+
+def create_directory_path(directories: list[str]) -> str:
+    if not directories:
+        return ""
+
+    path = os.path.join(*directories)
+    os.makedirs(path, exist_ok=True)
+    return path
+
+
+def write_file_content(file_path: str, content_lines: list[str]) -> None:
+    content_block = build_content_block(content_lines)
+
+    if os.path.exists(file_path) and os.path.getsize(file_path) > 0:
+        with open(file_path, "a") as source_file:
+            source_file.write("\n\n")
+            source_file.write(content_block)
+        return
+
+    with open(file_path, "a") as source_file:
+        source_file.write(content_block)
+
+
+def main() -> None:
+    directories, file_name = parse_arguments(sys.argv[1:])
+    directory_path = create_directory_path(directories)
+
+    if file_name is None:
+        return
+
+    file_path = (os.path.join(directory_path, file_name)
+                 if directory_path
+                 else file_name)
+    content_lines = read_content_lines()
+    write_file_content(file_path, content_lines)
+
+
+main()