"""Start a loopback-only demo. Generate a private .env if absent; no cloud writes."""

import os
import secrets
import subprocess
import sys
from datetime import UTC, datetime
from pathlib import Path

import uvicorn

root = Path(__file__).resolve().parents[1]
sys.path.insert(0, str(root))
env = root / ".env"
if not env.exists():
    text = (
        (root / ".env.example")
        .read_text()
        .replace(
            "FRAME_FLOW_TOKEN=\n",
            "FRAME_FLOW_TOKEN=" + secrets.token_urlsafe(32) + "\n",
        )
    )
    env.write_text(text)
    env.chmod(0o600)
for line in env.read_text().splitlines():
    if "=" in line and not line.startswith("#"):
        key, value = line.split("=", 1)
        os.environ.setdefault(key, value)
os.environ["DATA_DIR"] = str(root / "data")
os.environ["CONFIG_DIR"] = str(root / "config")
os.environ["KOKONNA_MOCK"] = "true"
os.environ["KOKONNA_WRITE_ENABLED"] = "false"
os.environ["BUILD_COMMIT"] = (
    subprocess.run(
        ["git", "rev-parse", "HEAD"], cwd=root, capture_output=True, text=True
    ).stdout.strip()
    or "development"
)

os.environ["BUILD_TIME"] = datetime.now(UTC).isoformat()
uvicorn.run(
    "pigway_frame_flow.main:app", host="127.0.0.1", port=18787, access_log=False
)