wip

aoc/input_file.py

@@ -0,0 +1,113 @@
+import requests
+import pathlib
+
+
+from aoc import exceptions
+
+
+def download(year: int, day: int, session_token: str | None) -> bytes:
+    url = f"https://adventofcode.com/{year}/day/{day}/input"
+
+    cookies = {}
+    if session_token is not None:
+        cookies["session"] = session_token
+
+    response = requests.get(url, cookies=cookies)
+
+    if response.status_code != 200:
+        raise exceptions.AocError(
+            f"failed to fetch input file {year}/{day:02} (http:{response.status_code})"
+            " - is AOC_SESSION_TOKEN environment variable set?"
+        )
+
+    return response.content
+
+
+def create_input_file(
+    year: int,
+    day: int,
+    session_token: str | None,
+    path_base: pathlib.Path,
+    force: bool = False,
+    exist_ok: bool = False,
+):
+    path = path_base / str(year) / f"{day:02}.txt"
+    path.parent.mkdir(parents=True, exist_ok=True)
+
+    if path.exists() and exist_ok:
+        return
+
+    if path.exists() and not path.stat().st_size == 0 and not force:
+        raise exceptions.AocError(f"input file {path} already exists")
+
+    input_data = download(year, day, session_token)
+    with open(path, "wb") as f:
+        f.write(input_data)
+
+
+def get(
+    year: int,
+    day: int,
+    session_token: str | None,
+    path_base: pathlib.Path,
+) -> str:
+    path = path_base / str(year) / f"{day:02}.txt"
+    path.parent.mkdir(parents=True, exist_ok=True)
+
+    create_input_file(year, day, session_token, path_base, exist_ok=True)
+
+    with open(path) as f:
+        return f.read()
+
+
+def _write_file_if_not_exists(
+    path: pathlib.Path, exist_ok: bool = False, data: bytes | None = None
+) -> None:
+    path.parent.mkdir(parents=True, exist_ok=True)
+
+    if path.exists() and not exist_ok:
+        raise exceptions.AocError(f"{path} already exists")
+
+    path.touch()
+
+    if data is None:
+        return
+
+    with open(path, "wb") as f:
+        f.write(data)
+
+
+_CREATE_TEMPLATE: bytes = b"""\
+from typing import Any
+
+def part_1(input_data: str) -> Any:
+    # your part 1 solution here
+    return None
+
+def part_2(input_data: str) -> Any:
+    # your part 2 solution here
+    return None
+
+# alternatively you can implement a "two in one solution" like this
+# part_1 and part_2 must be removed or commented out in this case
+# if tuple or list is returned elements will be printed on separate lines
+# def part_1_2(input_data) -> Any: 
+#     return None
+"""
+
+
+def create(
+    year: int,
+    day: int,
+    solution_base: pathlib.Path,
+    input_base: pathlib.Path,
+    example_base: pathlib.Path,
+) -> None:
+    year_path = solution_base / f"year_{year}"
+
+    year_path.mkdir(parents=True, exist_ok=True)
+    _write_file_if_not_exists(year_path / "__init__.py", exist_ok=True)
+    _write_file_if_not_exists(year_path / f"day_{day:02}.py", data=_CREATE_TEMPLATE)
+
+    _write_file_if_not_exists(input_base / str(year) / f"{day:02}.txt")
+    _write_file_if_not_exists(example_base / str(year) / f"{day:02}.txt")