from __future__ import annotations

import argparse
import os
from pathlib import Path

from huggingface_hub import HfApi


ROOT = Path(__file__).resolve().parents[1]

VARIABLE_DEFAULTS = {
    "GRADIO_ROOT_PATH": "https://build-small-hackathon-ai-time-machine.hf.space",
    "TIME_MACHINE_ADAPTER_PROFILE": "modal",
    "TIME_MACHINE_MODAL_TTS_MODEL_FAMILY": "chatterbox_turbo",
    "TIME_MACHINE_MODAL_TTS_LATENCY_PROFILE": "turbo",
}

VARIABLE_NAMES = [
    "GRADIO_ROOT_PATH",
    "TIME_MACHINE_ADAPTER_PROFILE",
    "TIME_MACHINE_MODAL_STT_URL",
    "TIME_MACHINE_MODAL_TTS_URL",
    "TIME_MACHINE_MODAL_TTS_MODEL_FAMILY",
    "TIME_MACHINE_MODAL_TTS_LATENCY_PROFILE",
    "TIME_MACHINE_MODAL_STT_TIMEOUT",
    "TIME_MACHINE_MODAL_TTS_TIMEOUT",
    "TIME_MACHINE_MODAL_STT_LANGUAGE",
    "TIME_MACHINE_MODAL_TTS_LANGUAGE",
    "TIME_MACHINE_LLM_BASE_URL",
    "TIME_MACHINE_LLM_MODEL",
    "TIME_MACHINE_IMAGE_BASE_URL",
    "TIME_MACHINE_IMAGE_MODEL",
    "TIME_MACHINE_IMAGE_STEPS",
]

SECRET_NAMES = [
    "TIME_MACHINE_LLM_API_KEY",
    "TOGETHER_API_KEY",
    "TIME_MACHINE_IMAGE_API_KEY",
    "TIME_MACHINE_MODAL_BEARER_TOKEN",
]


def main() -> None:
    parser = argparse.ArgumentParser(description="Configure Hugging Face Space runtime variables.")
    parser.add_argument("--repo-id", default="build-small-hackathon/ai-time-machine")
    parser.add_argument("--dry-run", action="store_true")
    args = parser.parse_args()

    load_local_env(ROOT / ".env")
    load_local_env(ROOT / "data" / "local.env")

    api = HfApi()
    changed: list[str] = []
    missing: list[str] = []

    for name in VARIABLE_NAMES:
        value = env_value(name) or VARIABLE_DEFAULTS.get(name)
        if not value:
            if name in {"TIME_MACHINE_MODAL_STT_URL", "TIME_MACHINE_MODAL_TTS_URL"}:
                missing.append(name)
            continue
        changed.append(f"variable:{name}")
        if not args.dry_run:
            api.add_space_variable(args.repo_id, name, value)

    for name in SECRET_NAMES:
        value = env_value(name)
        if not value:
            continue
        changed.append(f"secret:{name}")
        if not args.dry_run:
            api.add_space_secret(args.repo_id, name, value)

    print("Configured values:")
    for item in changed:
        print(f"- {item}")

    if missing:
        print("Missing required runtime values:")
        for name in missing:
            print(f"- {name}")
        raise SystemExit(2)


def load_local_env(path: Path) -> None:
    if not path.exists():
        return
    for raw_line in path.read_text(encoding="utf-8").splitlines():
        line = raw_line.strip()
        if not line or line.startswith("#") or "=" not in line:
            continue
        key, value = line.split("=", 1)
        key = key.strip()
        value = value.strip().strip('"').strip("'")
        if key and key not in os.environ:
            os.environ[key] = value


def env_value(name: str) -> str | None:
    value = os.getenv(name)
    if value is None:
        return None
    value = value.strip()
    return value or None


if __name__ == "__main__":
    main()