"""
Configuration settings for Binance WebSocket data ingestion system
"""
from pydantic_settings import BaseSettings, SettingsConfigDict


class Settings(BaseSettings):
    """Application settings with validation"""

    model_config = SettingsConfigDict(
        env_file=".env",
        case_sensitive=True,
        extra="ignore"  # Ignore extra fields from environment
    )

    # Binance WebSocket Configuration
    BINANCE_WS_BASE_URL: str = "wss://fstream.binance.com"
    SYMBOL: str = "btcusdt"

    # Stream subscriptions
    KLINE_INTERVALS: str = "5m,15m,1h,4h"  # Multiple kline intervals (comma-separated)
    DEPTH_LEVEL: int = 20                   # Top 20 order book levels

    # Redis Configuration
    REDIS_HOST: str = "redis"
    REDIS_PORT: int = 6379
    REDIS_DB: int = 0
    REDIS_PASSWORD: str = ""

    # Redis Stream Keys (prefix, actual keys are dynamic based on intervals)
    REDIS_STREAM_KLINE_PREFIX: str = "binance:raw:kline"  # Will be: binance:raw:kline:5m, etc.
    REDIS_STREAM_DEPTH: str = "binance:raw:depth:20"
    REDIS_STREAM_TRADE: str = "binance:raw:trade"

    @property
    def kline_intervals_list(self) -> list:
        """Parse kline intervals from comma-separated string"""
        return [interval.strip() for interval in self.KLINE_INTERVALS.split(',')]

    # Stream Configuration
    REDIS_STREAM_MAXLEN: int = 10000  # Keep last 10k messages per stream

    # Reconnection Strategy
    RECONNECT_INITIAL_DELAY: float = 1.0    # Initial delay in seconds
    RECONNECT_MAX_DELAY: float = 60.0       # Max delay in seconds
    RECONNECT_MULTIPLIER: float = 2.0       # Exponential backoff multiplier
    MAX_RECONNECT_ATTEMPTS: int = 100       # -1 for unlimited

    # Memory Protection
    MAX_BUFFER_SIZE: int = 1000            # Max messages in memory buffer
    RATE_LIMIT_MESSAGES_PER_SEC: int = 1000  # Max messages processed per second

    # Message Deduplication
    DEDUP_CACHE_SIZE: int = 10000          # Size of deduplication cache
    DEDUP_TTL_SECONDS: int = 300           # TTL for dedup entries (5 minutes)

    # Monitoring
    HEALTH_CHECK_INTERVAL: int = 30        # Health check interval in seconds
    LOG_LEVEL: str = "INFO"

    # LLM Gate Configuration (极简门控 - 频率为主，量化初筛)
    LLM_GATE_ENABLED: bool = True                    # 启用 LLM 门控

    # 数据要求
    LLM_MIN_CANDLES: int = 100                       # 最少K线数量

    # 信号质量（极简 - 只检查综合得分）
    LLM_MIN_COMPOSITE_SCORE: float = 0.0             # Gate关闭 - 每次都调用LLM

    # 频率限制（核心控制！）
    LLM_MAX_CALLS_PER_DAY: int = 12                  # 每天最多调用次数
    LLM_MIN_INTERVAL_MINUTES: int = 15               # 最小调用间隔（分钟）


settings = Settings()