"""
Qihu-AIFlow 智能自动化PaaS平台 - 后端配置
"""
import os
import logging
from pathlib import Path
from logging.handlers import TimedRotatingFileHandler
from app.core.observability import TraceIdFilter, JsonFormatter
from dotenv import load_dotenv

# 加载 .env 文件（Docker 环境跳过，直接使用容器环境变量）
if not (Path("/.dockerenv").exists() or Path("/run/.containerenv").exists()):
    env_path = Path("/data/share/project/.env")
    if env_path.exists():
        load_dotenv(env_path, override=False)

# 数据库配置
DATABASE_URL = f"mysql+pymysql://{os.getenv('MYSQL_USER', 'root')}:{os.getenv('MYSQL_PASSWORD', 'pwd2026')}@{os.getenv('MYSQL_HOST', 'localhost')}:{os.getenv('MYSQL_PORT', '3306')}/{os.getenv('MYSQL_DATABASE', 'aiflow')}?charset=utf8mb4"

# Redis配置
REDIS_HOST = os.getenv("REDIS_HOST", "localhost")
REDIS_PORT = int(os.getenv("REDIS_PORT", "6379"))
REDIS_PASSWORD = os.getenv("REDIS_PASSWORD", "pwd2026")
REDIS_URL = f"redis://:{REDIS_PASSWORD}@{REDIS_HOST}:{REDIS_PORT}/0"

# JWT配置
SECRET_KEY = os.getenv("SECRET_KEY", "aiflow-secret-key-change-in-production-2026")
ALGORITHM = "HS256"
ACCESS_TOKEN_EXPIRE_MINUTES = 60 * 24  # 24小时

# 应用配置
APP_NAME = "Qihu-AIFlow"
APP_VERSION = "1.0.0"
DEBUG = os.getenv("DEBUG", "false").lower() == "true"

# 服务地址
# 三级优先级：
#   1. docker-compose.yml 的环境变量（生产部署）
#   2. .env 文件中的配置（本地开发）
#   3. 硬编码正式域名（最终兜底）
# 注意：如果环境变量是临时开发地址（如team-coding子域名），强制使用.env中的正式域名
APP_ACCESS_URL = os.getenv("APP_ACCESS_URL", "")

# 检测是否为临时/开发环境域名，这些域名在生产不可用
_TEMP_DOMAIN_PATTERNS = ["team-coding", "localhost", "127.0.0.1", "0.0.0.0"]
_is_temp_url = any(p in (APP_ACCESS_URL or "") for p in _TEMP_DOMAIN_PATTERNS)

if not APP_ACCESS_URL or _is_temp_url:
    # 尝试从.env文件读取正式域名（Docker环境跳过.env，直接用docker-compose变量）
    try:
        from dotenv import load_dotenv as _load_dotenv
        _env_path = Path("/data/share/project/.env")
        if _env_path.exists():
            _load_dotenv(_env_path, override=True)
            env_url = os.getenv("APP_ACCESS_URL", "")
            if env_url:
                APP_ACCESS_URL = env_url
                _is_temp_url = any(p in (APP_ACCESS_URL or "") for p in _TEMP_DOMAIN_PATTERNS)
    except Exception:
        pass

# 最终兜底：如果仍然是临时URL或为空，使用硬编码正式域名
if not APP_ACCESS_URL or _is_temp_url:
    APP_ACCESS_URL = "https://bot.qihuyun.com"

# 上传文件配置（兼容 Docker /app 和本地 /data/share/project 路径）
_DATA_BASE = Path("/app/data") if Path("/.dockerenv").exists() else Path("/data/share/project/data")
UPLOAD_DIR = _DATA_BASE / "uploads"
UPLOAD_DIR.mkdir(parents=True, exist_ok=True)
MAX_UPLOAD_SIZE = 50 * 1024 * 1024  # 50MB

# ============================================================
# 日志配置 - 按天轮转输出到文件
# ============================================================
LOG_DIR = _DATA_BASE / "logs"
LOG_DIR.mkdir(parents=True, exist_ok=True)

# 慢请求阈值（秒）
SLOW_REQUEST_THRESHOLD = float(os.getenv("SLOW_REQUEST_THRESHOLD", "3.0"))


def setup_file_logging():
    """配置应用日志按天轮转输出到文件"""
    use_json = os.getenv("AIFLOW_JSON_LOGS", "0") == "1"
    if use_json:
        log_format = JsonFormatter()
    else:
        log_format = logging.Formatter(
            "%(asctime)s [%(levelname)s] %(name)s [tid:%(trace_id)s] - %(message)s",
            datefmt="%Y-%m-%d %H:%M:%S",
        )

    # 应用日志 - 按天轮转，保留30天
    app_handler = TimedRotatingFileHandler(
        filename=str(LOG_DIR / "app.log"),
        when="midnight",
        interval=1,
        backupCount=30,
        encoding="utf-8",
    )
    app_handler.setFormatter(log_format)
    app_handler.setLevel(logging.INFO)

    # 错误日志 - 按天轮转，保留30天
    error_handler = TimedRotatingFileHandler(
        filename=str(LOG_DIR / "error.log"),
        when="midnight",
        interval=1,
        backupCount=30,
        encoding="utf-8",
    )
    error_handler.setFormatter(log_format)
    error_handler.setLevel(logging.ERROR)

    # 访问日志 - 按天轮转，保留14天
    access_handler = TimedRotatingFileHandler(
        filename=str(LOG_DIR / "access.log"),
        when="midnight",
        interval=1,
        backupCount=14,
        encoding="utf-8",
    )
    access_handler.setFormatter(log_format)
    access_handler.setLevel(logging.INFO)

    # 配置根logger
    root_logger = logging.getLogger()
    root_logger.setLevel(logging.INFO)
    root_logger.addHandler(app_handler)
    root_logger.addHandler(error_handler)

    # TraceIdFilter 必须挂在 handler 上，而非 root logger。
    # logger 级 filter 只对「直接经该 logger 发射」的记录生效；子 logger 的记录向上冒泡
    # 到 root 的 handler 时不会经过 root 的 logger 级 filter，导致 %(trace_id)s 缺失并抛
    # KeyError('trace_id')。handler 级 filter 对经它格式化的每条记录都生效。
    _tid_filter = TraceIdFilter()
    app_handler.addFilter(_tid_filter)
    error_handler.addFilter(_tid_filter)
    access_handler.addFilter(_tid_filter)

    # 配置访问日志专用logger
    access_logger = logging.getLogger("aiflow.access")
    access_logger.addHandler(access_handler)
    access_logger.propagate = False
    access_logger.addFilter(TraceIdFilter())

    return access_logger