"""
Hermes-Agent-Status (Control-Plane-Read). MC betreibt Hermes NICHT — es zeigt nur
Status + verlinkt das standalone hermes-webui. Voller Zugriff + Tools/MCP werden in
Hermes' eigener Config verdrahtet (siehe docs/HERMES_SETUP.md).
"""

import logging
import os

import httpx

from config import ANYTHINGLLM_URL, HERMES_API_URL, HERMES_HOME, PC_EXECUTOR_URL

log = logging.getLogger(__name__)


def _reach(url: str, path: str = "") -> bool:
    try:
        with httpx.Client(timeout=3.0) as c:
            return c.get(f"{url}{path}").status_code < 500
    except httpx.HTTPError:
        return False


def _count_enabled_mcp_servers() -> int:
    config_path = HERMES_HOME / "config.yaml"
    if not config_path.exists():
        return 0
    try:
        from ruamel.yaml import YAML
        r_yaml = YAML()
        with config_path.open("r", encoding="utf-8") as f:
            cfg = r_yaml.load(f) or {}
        mcp_servers = cfg.get("mcp_servers", {}) if isinstance(cfg, dict) else {}
        if not isinstance(mcp_servers, dict):
            return 0
        return sum(1 for v in mcp_servers.values() if isinstance(v, dict) and v.get("enabled", True))
    except Exception:
        log.debug("_count_enabled_mcp_servers: Fehler", exc_info=True)
        return 0


def agent_status() -> dict:
    """Erreichbarkeit von Gateway (:8642) + WebUI (:8787) + lokale Hinweise."""
    home = HERMES_HOME
    brain_model = "auto"
    config_path = home / "config.yaml"
    if config_path.exists():
        try:
            from ruamel.yaml import YAML
            r_yaml = YAML()
            with config_path.open("r", encoding="utf-8") as f:
                cfg = r_yaml.load(f) or {}
                if isinstance(cfg, dict):
                    brain_model = cfg.get("model", {}).get("model", "auto")
        except Exception:
            log.debug("agent_status: Hermes-config.yaml nicht lesbar", exc_info=True)


    return {
        "gateway_url": HERMES_API_URL,
        # Chat-WebUI ist jetzt AnythingLLM (eigener Host), nicht mehr hermes-webui :8787.
        "webui_url": ANYTHINGLLM_URL,
        "gateway_reachable": _reach(HERMES_API_URL, "/health"),
        "webui_reachable": _reach(ANYTHINGLLM_URL, "/api/ping"),
        "home_exists": home.exists(),
        "brain_model": brain_model,
        # Best-effort: welche Verdrahtung lokal sichtbar ist (auf der Box aussagekräftig).
        "has_config": (home / "config.yaml").exists() or (home / "config.json").exists(),
        "has_skills": (home / "skills").exists(),
        "has_memories": (home / "memories").exists(),
        # Neue Felder: Telegram, MCP-Server-Anzahl, PC-Executor-Erreichbarkeit.
        "telegram_enabled": bool(os.environ.get("TELEGRAM_BOT_TOKEN", "")),
        "mcp_server_count": _count_enabled_mcp_servers(),
        "pc_executor_reachable": _reach(PC_EXECUTOR_URL, "/health"),
    }


def update_brain_model(new_model: str) -> bool:
    from config import HERMES_HOME
    home = HERMES_HOME
    config_path = home / "config.yaml"
    
    # Ensure home directory exists
    home.mkdir(parents=True, exist_ok=True)
    
    cfg = {}
    if config_path.exists():
        try:
            from ruamel.yaml import YAML
            r_yaml = YAML()
            with config_path.open("r", encoding="utf-8") as f:
                cfg = r_yaml.load(f) or {}
        except Exception:
            log.debug("update_brain_model: bestehende config.yaml nicht lesbar", exc_info=True)
            cfg = {}
            
    if not isinstance(cfg, dict):
        cfg = {}
        
    if "model" not in cfg or not isinstance(cfg["model"], dict):
        cfg["model"] = {}
        
    cfg["model"]["model"] = new_model
    
    try:
        from ruamel.yaml import YAML
        r_yaml = YAML()
        with config_path.open("w", encoding="utf-8") as f:
            r_yaml.dump(cfg, f)
            
        # Restart the user-space service to apply changes
        try:
            import services.maintenance as maintenance
            maintenance.restart_service("hermes-gateway")
        except Exception:
            log.warning("update_brain_model: hermes-gateway-Restart fehlgeschlagen", exc_info=True)

        return True
    except Exception:
        log.warning("update_brain_model: Schreiben der config.yaml fehlgeschlagen", exc_info=True)
        return False