"""Infra tool — NanoClaude wrapper over infra.core/ functions.

Converts infra.core results to NanoClaude tool return format:
{"ok": bool, "tool": "infra", "operation": str, "data": list, "summary": str, "error": str}
"""

from __future__ import annotations

import asyncio
import logging

from infra.core.docker import docker_status, docker_restart as _docker_restart
from infra.core.health import service_health, VALID_SERVICES
from infra.core.system import disk_usage
from infra.core.network import tailscale_status
from infra.core.models import ollama_models, mlx_models
from infra.core.docserver import scheduler_status as _scheduler_status, queue_status as _queue_status
from infra.core.verify import run_verify as _run_verify, VERIFY_COMMANDS

logger = logging.getLogger(__name__)


async def status(host: str = "gpu") -> dict:
    """Docker container status overview."""
    result = await docker_status(host)
    # SSH/연결 실패 시에만 에러 반환. 컨테이너가 exited여도 데이터는 전달.
    if result.error_type:
        return {"ok": False, "tool": "infra", "operation": "status",
                "data": [], "summary": "", "error": result.error or "확인 실패"}

    data = [{"name": c.name, "status": c.status, "uptime": c.uptime}
            for c in result.containers]
    return {"ok": True, "tool": "infra", "operation": "status",
            "data": data, "summary": result.summary, "error": ""}


async def health(service: str = "") -> dict:
    """Service health check. If no service specified, check all critical ones."""
    if service:
        services = [service]
    else:
        services = ["document-server", "mlx", "ollama-gpu"]

    results = []
    all_ok = True
    for svc in services:
        r = await service_health(svc)
        results.append({
            "service": r.service, "status": r.status, "ok": r.ok,
            "details": r.details,
        })
        if not r.ok:
            all_ok = False

    summary_parts = []
    for r in results:
        icon = "정상" if r["ok"] else "이상"
        summary_parts.append(f"{r['service']}: {icon}")

    return {"ok": all_ok, "tool": "infra", "operation": "health",
            "data": results, "summary": ", ".join(summary_parts), "error": ""}


async def disk(host: str = "") -> dict:
    """Disk usage. If no host, check gpu + macmini."""
    hosts = [host] if host else ["gpu", "macmini"]
    all_data = []
    warnings = []

    for h in hosts:
        result = await disk_usage(h)
        if not result.ok:
            warnings.append(f"{h}: {result.error}")
            continue
        for fs in result.filesystems:
            all_data.append({"host": h, "mount": fs.mount,
                             "used_pct": fs.used_pct, "used": fs.used, "total": fs.total})
        warnings.extend(result.warnings)

    summary = ", ".join(f"{d['host']}:{d['mount']} {d['used_pct']}%" for d in all_data[:5])
    return {"ok": len(warnings) == 0, "tool": "infra", "operation": "disk",
            "data": all_data, "summary": summary,
            "error": "; ".join(warnings) if warnings else ""}


async def network() -> dict:
    """Tailscale network status."""
    result = await tailscale_status()
    if not result.ok:
        return {"ok": False, "tool": "infra", "operation": "network",
                "data": [], "summary": "", "error": result.error or "확인 실패"}

    data = [{"hostname": p.hostname, "ip": p.ip, "status": p.status, "os": p.os}
            for p in result.peers]
    online = sum(1 for p in result.peers if p.status != "offline")
    summary = f"{online}/{len(result.peers)} 온라인"
    return {"ok": True, "tool": "infra", "operation": "network",
            "data": data, "summary": summary, "error": ""}


async def models(host: str = "gpu") -> dict:
    """Model inventory."""
    if host == "mlx" or host == "macmini":
        result = await mlx_models()
    else:
        result = await ollama_models(host)

    if not result.ok:
        return {"ok": False, "tool": "infra", "operation": "models",
                "data": [], "summary": "", "error": result.error or "확인 실패"}

    data = [{"id": m.id, "size": m.size} for m in result.models]
    summary = f"{result.source} on {result.host}: {len(result.models)}개 모델"
    return {"ok": True, "tool": "infra", "operation": "models",
            "data": data, "summary": summary, "error": ""}


async def scheduler() -> dict:
    """Document Server scheduler status."""
    return await _scheduler_status()


async def queue() -> dict:
    """Document Server queue status."""
    return await _queue_status()


async def verify(check_name: str = "gpu-snapshot") -> dict:
    """Run predefined verify command."""
    return await _run_verify(check_name)


async def restart(host: str = "gpu", container: str = "") -> dict:
    """Restart a Docker container."""
    if not container:
        return {"ok": False, "tool": "infra", "operation": "restart",
                "data": [], "summary": "", "error": "컨테이너 이름을 지정해주세요."}
    result = await _docker_restart(host, container)
    ok = result.ok
    return {"ok": ok, "tool": "infra", "operation": "restart",
            "data": result.warnings if ok else [],
            "summary": result.warnings[0] if ok and result.warnings else "",
            "error": result.error or ("재시작 실패" if not ok else "")}