"""Server config, read from the environment at call time so tests can override
without reimport. Charter §4 — all of this lives server-side; the client never
sees it.
"""

import os


def ollama_base_url() -> str:
    return os.environ.get("OLLAMA_BASE_URL", "http://localhost:11434")


def ollama_timeout_seconds() -> float:
    return float(os.environ.get("OLLAMA_TIMEOUT_SECONDS", "30"))


def narrator_model() -> str:
    return os.environ.get("OLLAMA_NARRATOR_MODEL", "qwen3.5:latest")


def npc_model() -> str:
    return os.environ.get("OLLAMA_NPC_MODEL", "qwen3.5:latest")


def call_log_path() -> str | None:
    return os.environ.get("CALL_LOG_PATH") or None