"""
PKM 시스템 공통 유틸리티
- 로거 설정 (파일 + 콘솔)
- credentials.env 로딩
- osascript 호출 래퍼
"""

import os
import sys
import logging
import subprocess
from pathlib import Path
from dotenv import load_dotenv

# 프로젝트 루트 디렉토리
PROJECT_ROOT = Path(__file__).parent.parent
LOGS_DIR = PROJECT_ROOT / "logs"
DATA_DIR = PROJECT_ROOT / "data"
SCRIPTS_DIR = PROJECT_ROOT / "scripts"
APPLESCRIPT_DIR = PROJECT_ROOT / "applescript"

# 디렉토리 생성
LOGS_DIR.mkdir(exist_ok=True)
DATA_DIR.mkdir(exist_ok=True)


def setup_logger(name: str) -> logging.Logger:
    """모듈별 로거 설정 — 파일 + 콘솔 핸들러"""
    logger = logging.getLogger(name)
    if logger.handlers:
        return logger  # 중복 핸들러 방지

    logger.setLevel(logging.DEBUG)
    fmt = logging.Formatter("[%(asctime)s] [%(name)s] [%(levelname)s] %(message)s",
                            datefmt="%Y-%m-%d %H:%M:%S")

    # 파일 핸들러
    fh = logging.FileHandler(LOGS_DIR / f"{name}.log", encoding="utf-8")
    fh.setLevel(logging.DEBUG)
    fh.setFormatter(fmt)
    logger.addHandler(fh)

    # 콘솔 핸들러
    ch = logging.StreamHandler(sys.stdout)
    ch.setLevel(logging.INFO)
    ch.setFormatter(fmt)
    logger.addHandler(ch)

    return logger


def load_credentials() -> dict:
    """~/.config/pkm/credentials.env 로딩 + 누락 키 경고"""
    cred_path = Path.home() / ".config" / "pkm" / "credentials.env"
    if not cred_path.exists():
        # 폴백: 프로젝트 내 credentials.env (개발용)
        cred_path = PROJECT_ROOT / "credentials.env"

    if cred_path.exists():
        load_dotenv(cred_path)
    else:
        print(f"[경고] credentials.env를 찾을 수 없습니다: {cred_path}")

    keys = {
        "CLAUDE_API_KEY": os.getenv("CLAUDE_API_KEY"),
        "LAW_OC": os.getenv("LAW_OC"),
        "NAS_DOMAIN": os.getenv("NAS_DOMAIN"),
        "NAS_TAILSCALE_IP": os.getenv("NAS_TAILSCALE_IP"),
        "NAS_PORT": os.getenv("NAS_PORT", "15001"),
        "MAILPLUS_HOST": os.getenv("MAILPLUS_HOST"),
        "MAILPLUS_PORT": os.getenv("MAILPLUS_PORT", "993"),
        "MAILPLUS_USER": os.getenv("MAILPLUS_USER"),
        "MAILPLUS_PASS": os.getenv("MAILPLUS_PASS"),
        "GPU_SERVER_IP": os.getenv("GPU_SERVER_IP"),
    }

    missing = [k for k, v in keys.items() if not v and k not in ("GPU_SERVER_IP", "CLAUDE_API_KEY")]
    if missing:
        print(f"[경고] 누락된 인증 키: {', '.join(missing)}")

    return keys


def run_applescript(script_path: str, *args) -> str:
    """osascript 호출 래퍼 + 에러 캡처"""
    cmd = ["osascript", str(script_path)] + [str(a) for a in args]
    try:
        result = subprocess.run(cmd, capture_output=True, text=True, timeout=120)
        if result.returncode != 0:
            raise RuntimeError(f"AppleScript 에러: {result.stderr.strip()}")
        return result.stdout.strip()
    except subprocess.TimeoutExpired:
        raise RuntimeError(f"AppleScript 타임아웃: {script_path}")


def run_applescript_inline(script: str) -> str:
    """인라인 AppleScript 실행"""
    cmd = ["osascript", "-e", script]
    try:
        result = subprocess.run(cmd, capture_output=True, text=True, timeout=120)
        if result.returncode != 0:
            raise RuntimeError(f"AppleScript 에러: {result.stderr.strip()}")
        return result.stdout.strip()
    except subprocess.TimeoutExpired:
        raise RuntimeError("AppleScript 타임아웃 (인라인)")


def llm_generate(prompt: str, model: str = "mlx-community/Qwen3.5-35B-A3B-4bit",
                 host: str = "http://localhost:8800", json_mode: bool = False) -> str:
    """MLX 서버 API 호출 (OpenAI 호환)"""
    import requests
    messages = [{"role": "user", "content": prompt}]
    resp = requests.post(f"{host}/v1/chat/completions", json={
        "model": model,
        "messages": messages,
        "temperature": 0.3,
        "max_tokens": 4096,
    }, timeout=300)
    resp.raise_for_status()
    content = resp.json()["choices"][0]["message"]["content"]
    if not json_mode:
        return content
    # JSON 모드: thinking 허용 → 마지막 유효 JSON 객체 추출
    import re
    import json as _json
    # 배열이 포함된 JSON 객체 매칭
    all_jsons = re.findall(r'\{[^{}]*(?:\[[^\]]*\])?[^{}]*\}', content)
    for j in reversed(all_jsons):
        try:
            parsed = _json.loads(j)
            if any(k in parsed for k in ("domain_db", "tags", "domain", "classification")):
                return j
        except _json.JSONDecodeError:
            continue
    # 폴백: 전체에서 가장 큰 JSON 추출
    json_match = re.search(r'\{[\s\S]*\}', content)
    return json_match.group(0) if json_match else content


# 하위호환 별칭
ollama_generate = llm_generate


def count_log_errors(log_file: Path, since_hours: int = 24) -> int:
    """로그 파일에서 최근 N시간 ERROR 카운트"""
    from datetime import datetime, timedelta
    if not log_file.exists():
        return 0
    cutoff = datetime.now() - timedelta(hours=since_hours)
    count = 0
    with open(log_file, "r", encoding="utf-8") as f:
        for line in f:
            if "[ERROR]" in line:
                try:
                    ts_str = line[1:20]  # [YYYY-MM-DD HH:MM:SS]
                    ts = datetime.strptime(ts_str, "%Y-%m-%d %H:%M:%S")
                    if ts >= cutoff:
                        count += 1
                except (ValueError, IndexError):
                    count += 1
    return count