"""配置管理 - 环境变量 + 默认值"""
import os
from pathlib import Path
from pydantic_settings import BaseSettings, SettingsConfigDict


class Settings(BaseSettings):
    """应用配置"""

    model_config = SettingsConfigDict(env_file=".env", env_file_encoding="utf-8", extra="ignore")

    # RSSKeeper 连接
    RSSKEEPER_BASE_URL: str = "http://localhost:7329"

    # LLM API（兼容 OpenAI 格式）
    OPENAI_API_KEY: str = ""
    OPENAI_BASE_URL: str = "https://api.openai.com/v1"
    OPENAI_MODEL: str = "gpt-4o-mini"
    OPENAI_TIMEOUT: int = 60
    OPENAI_MAX_RETRIES: int = 3

    # dataClean 数据目录
    DATA_DIR: Path = Path("/app/data")
    DATABASE_URL: str = "/app/data/dataclean.db"

    # 简报输出目录
    BRIEF_OUTPUT_DIR: Path = Path("/app/data/briefs")

    # 调度时间（分钟）
    SUMMARIZE_INTERVAL_MINUTES: int = 60
    TAG_SCORE_INTERVAL_MINUTES: int = 1440
    DAILY_BRIEF_HOUR: int = 8
    DAILY_BRIEF_MINUTE: int = 0

    # 去重阈值
    TITLE_SIMILARITY_THRESHOLD: float = 0.85
    CONTENT_SIMILARITY_THRESHOLD: float = 0.80

    # 摘要长度
    MAX_AI_SUMMARY_LENGTH: int = 300
    MIN_ORIGINAL_SUMMARY_LENGTH: int = 100

    # 每篇简报每个分类显示文章数
    BRIEF_TOP_N_PER_CATEGORY: int = 10

    # 日志级别
    LOG_LEVEL: str = "INFO"

    # Web UI / API 安全
    # 为空时不启用 API Token 鉴权（仅建议在内网使用）；生产环境请设置强密码
    API_TOKEN: str = ""
    # CORS 允许来源，逗号分隔；生产环境请填写具体域名，如 "https://dataclean.example.com"
    CORS_ALLOWED_ORIGINS: str = ""

    @property
    def database_path(self) -> str:
        """返回 SQLite 数据库路径"""
        return str(Path(self.DATABASE_URL))

    @property
    def brief_output_dir_path(self) -> Path:
        """返回简报输出目录"""
        return self.BRIEF_OUTPUT_DIR


settings = Settings()