"""Configuration, loaded from the environment (stdlib `os` only).

Everything the orchestrator needs to run is an env var so a deploy is a
process with an environment, no config file to manage. `FORGE_*` names
match the bot-bottle forge-native PRD.
"""

from __future__ import annotations

import os
from dataclasses import dataclass
from pathlib import Path

# The label that marks an issue as agent-targeted: `bot-bottle:<agent>`.
LABEL_PREFIX = "bot-bottle:"
# Optional bottle override: `bot-bottle-bottle:<name>`.
BOTTLE_LABEL_PREFIX = "bot-bottle-bottle:"


@dataclass(frozen=True)
class Config:
    """Resolved orchestrator configuration."""

    forge_org: str
    gitea_api: str
    watchdog_timeout_secs: int
    webhook_host: str
    webhook_port: int
    bot_bottle_cli: str
    queue_dir: Path
    sidecar_socket: Path
    db_path: Path | None

    @staticmethod
    def from_env(env: dict[str, str] | None = None) -> "Config":
        e = os.environ if env is None else env
        home = Path(e.get("HOME", str(Path.home())))
        default_root = home / ".bot-bottle"
        db = e.get("FORGE_DB_PATH")
        return Config(
            forge_org=e.get("FORGE_ORG", "bot-bottle"),
            gitea_api=e.get("FORGE_GITEA_API", ""),
            watchdog_timeout_secs=int(e.get("FORGE_WATCHDOG_TIMEOUT", "1800")),
            webhook_host=e.get("FORGE_WEBHOOK_HOST", "127.0.0.1"),
            webhook_port=int(e.get("FORGE_WEBHOOK_PORT", "8477")),
            bot_bottle_cli=e.get("BOT_BOTTLE_CLI", "cli.py"),
            queue_dir=Path(e.get("FORGE_QUEUE_DIR", str(default_root / "forge-queue"))),
            sidecar_socket=Path(
                e.get("FORGE_SIDECAR_SOCKET", str(default_root / "forge-sidecar.sock"))
            ),
            db_path=Path(db) if db else None,
        )