"""Paths and settings. Everything is environment-driven so the same image runs
locally and in Docker without code changes (REQ-072)."""

import os

from dotenv import load_dotenv

load_dotenv()

# huggingface_hub reads HF_TOKEN / HUGGING_FACE_HUB_TOKEN; accept either name in
# .env so pasting a token under the obvious name just works.
if os.environ.get("HF_TOKEN") and not os.environ.get("HUGGING_FACE_HUB_TOKEN"):
    os.environ["HUGGING_FACE_HUB_TOKEN"] = os.environ["HF_TOKEN"]

REPO_ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))

DATA_DIR = os.path.abspath(os.environ.get("APP_DATA_DIR", os.path.join(REPO_ROOT, "data")))
PROJECTS_DIR = os.path.join(DATA_DIR, "projects")
DB_PATH = os.path.join(DATA_DIR, "app.db")

# Where the video archive is mounted. Projects store a path relative to nothing —
# they store an absolute one — but this is the default the UI starts browsing from.
VIDEO_ROOT = os.path.abspath(os.environ.get("VIDEO_ARCHIVE", os.path.join(DATA_DIR, "archive")))

# Vite dev server needs cross-origin access; in Docker nginx proxies /api and
# this is irrelevant.
CORS_ORIGINS = [
    origin.strip()
    for origin in os.environ.get("CORS_ORIGINS", "http://localhost:5173").split(",")
    if origin.strip()
]


def ensure_dirs() -> None:
    os.makedirs(PROJECTS_DIR, exist_ok=True)


def project_dir(slug: str) -> str:
    return os.path.join(PROJECTS_DIR, slug)