"""
应用配置管理模块
统一管理所有环境变量和应用配置
"""
from typing import Optional
from pydantic import Field
from pydantic_settings import BaseSettings, SettingsConfigDict


class Settings(BaseSettings):
    """应用配置类"""
    
    # ===== 应用基础配置 =====
    APP_NAME: str = Field(default="LOVER", env="APP_NAME")
    APP_ENV: str = Field(default="development", env="APP_ENV")  # development/production
    DEBUG: bool = Field(default=True, env="DEBUG")
    
    # ===== 数据库配置 =====
    DATABASE_URL: str = Field(
        default="mysql+pymysql://root:password@localhost:3306/lover?charset=utf8mb4",
        env="DATABASE_URL",
        description="数据库连接字符串"
    )
    DB_POOL_SIZE: int = Field(default=10, env="DB_POOL_SIZE")
    DB_POOL_MAX_OVERFLOW: int = Field(default=20, env="DB_POOL_MAX_OVERFLOW")
    
    # ===== 微信小程序配置 =====
    WECHAT_APP_ID: str = Field(default="", env="WECHAT_APP_ID")
    WECHAT_APP_SECRET: str = Field(default="", env="WECHAT_APP_SECRET")
    
    # ===== JWT/认证配置 =====
    JWT_SECRET_KEY: str = Field(default="your-secret-key-change-in-production", env="JWT_SECRET_KEY")
    JWT_ALGORITHM: str = Field(default="HS256", env="JWT_ALGORITHM")
    JWT_ACCESS_TOKEN_EXPIRE_MINUTES: int = Field(default=60*24*7, env="JWT_ACCESS_TOKEN_EXPIRE_MINUTES")  # 7天
    
    # ===== OSS 对象存储配置 (阿里云/腾讯云) =====
    OSS_PROVIDER: str = Field(default="aliyun", env="OSS_PROVIDER")  # aliyun/tencent/aws
    
    # 阿里云 OSS
    ALIYUN_OSS_ACCESS_KEY_ID: str = Field(default="", env="ALIYUN_OSS_ACCESS_KEY_ID")
    ALIYUN_OSS_ACCESS_KEY_SECRET: str = Field(default="", env="ALIYUN_OSS_ACCESS_KEY_SECRET")
    ALIYUN_OSS_BUCKET_NAME: str = Field(default="", env="ALIYUN_OSS_BUCKET_NAME")
    ALIYUN_OSS_ENDPOINT: str = Field(default="", env="ALIYUN_OSS_ENDPOINT")
    ALIYUN_OSS_CDN_DOMAIN: Optional[str] = Field(default=None, env="ALIYUN_OSS_CDN_DOMAIN")
    
    # 腾讯云 COS
    TENCENT_COS_SECRET_ID: str = Field(default="", env="TENCENT_COS_SECRET_ID")
    TENCENT_COS_SECRET_KEY: str = Field(default="", env="TENCENT_COS_SECRET_KEY")
    TENCENT_COS_BUCKET: str = Field(default="", env="TENCENT_COS_BUCKET")
    TENCENT_COS_REGION: str = Field(default="", env="TENCENT_COS_REGION")
    TENCENT_COS_CDN_DOMAIN: Optional[str] = Field(default=None, env="TENCENT_COS_CDN_DOMAIN")
    
    # ===== AI 大模型配置 =====
    # LLM 聊天模型
    LLM_PROVIDER: str = Field(default="openai", env="LLM_PROVIDER")  # openai/azure/zhipu/qwen
    LLM_API_BASE: Optional[str] = Field(default=None, env="LLM_API_BASE")
    LLM_MODEL: str = Field(default="gpt-3.5-turbo", env="LLM_MODEL")
    LLM_TEMPERATURE: float = Field(default=0.8, env="LLM_TEMPERATURE")
    LLM_MAX_TOKENS: int = Field(default=2000, env="LLM_MAX_TOKENS")
    
    # AI 绘图模型
    IMAGE_GEN_PROVIDER: str = Field(default="stability", env="IMAGE_GEN_PROVIDER")  # stability/midjourney/dalle
    IMAGE_GEN_API_KEY: str = Field(default="", env="IMAGE_GEN_API_KEY")
    IMAGE_GEN_API_BASE: Optional[str] = Field(default=None, env="IMAGE_GEN_API_BASE")
    IMAGE_GEN_MODEL: str = Field(default="wan2.5-t2i-preview", env="IMAGE_GEN_MODEL")
    IMAGE_GEN_SIZE: Optional[str] = Field(default="960*1280", env="IMAGE_GEN_SIZE")  # 宽*高，wan2.5 支持自定义
    DASHSCOPE_API_KEY: Optional[str] = Field(default=None, env="DASHSCOPE_API_KEY")
    WAN26_ASYNC: bool = Field(default=True, env="WAN26_ASYNC")  # wan2.6 默认使用异步任务
    VISION_MODEL: str = Field(default="qwen3-vl-flash", env="VISION_MODEL")
    TRYON_MODEL: str = Field(default="aitryon", env="TRYON_MODEL")
    IMAGE_QUALITY_MODEL: str = Field(default="animate-anyone-detect-gen2", env="IMAGE_QUALITY_MODEL")
    VIDEO_GEN_MODEL: str = Field(default="wan2.2-i2v-flash", env="VIDEO_GEN_MODEL")
    VIDEO_GEN_RESOLUTION: str = Field(default="480P", env="VIDEO_GEN_RESOLUTION")
    VIDEO_GEN_DURATION: int = Field(default=5, env="VIDEO_GEN_DURATION")
    SING_MERGE_MAX_CONCURRENCY: int = Field(default=2, env="SING_MERGE_MAX_CONCURRENCY")
    EMO_MAX_CONCURRENCY: int = Field(default=1, env="EMO_MAX_CONCURRENCY")
    EMO_MIN_SEGMENT_SECONDS: int = Field(default=6, env="EMO_MIN_SEGMENT_SECONDS")

    # ===== 语音通话（ASR/LLM/TTS） =====
    VOICE_CALL_ASR_MODEL: str = Field(default="paraformer-realtime-v2", env="VOICE_CALL_ASR_MODEL")
    VOICE_CALL_ASR_SAMPLE_RATE: int = Field(default=16000, env="VOICE_CALL_ASR_SAMPLE_RATE")
    VOICE_CALL_TTS_FORMAT: str = Field(default="mp3", env="VOICE_CALL_TTS_FORMAT")  # mp3 / pcm
    VOICE_CALL_MAX_HISTORY: int = Field(default=20, env="VOICE_CALL_MAX_HISTORY")
    VOICE_CALL_TTS_MODEL: str = Field(default="cosyvoice-v2", env="VOICE_CALL_TTS_MODEL")
    VOICE_CALL_TTS_VOICE: str = Field(default="longxiaochun_v2", env="VOICE_CALL_TTS_VOICE")
    VOICE_CALL_IDLE_TIMEOUT: int = Field(default=60, env="VOICE_CALL_IDLE_TIMEOUT")  # 秒，无音频则断开
    VOICE_CALL_REQUIRE_PTT: bool = Field(default=False, env="VOICE_CALL_REQUIRE_PTT")  # 是否要求按住说话

    # TTS 语音合成
    TTS_PROVIDER: str = Field(default="azure", env="TTS_PROVIDER")  # azure/aliyun/tencent
    TTS_API_KEY: str = Field(default="", env="TTS_API_KEY")
    TTS_REGION: Optional[str] = Field(default=None, env="TTS_REGION")
    
    # ===== Redis 配置 (可选，用于缓存/队列) =====
    REDIS_ENABLED: bool = Field(default=False, env="REDIS_ENABLED")
    REDIS_HOST: str = Field(default="localhost", env="REDIS_HOST")
    REDIS_PORT: int = Field(default=6379, env="REDIS_PORT")
    REDIS_PASSWORD: Optional[str] = Field(default=None, env="REDIS_PASSWORD")
    REDIS_DB: int = Field(default=0, env="REDIS_DB")
    
    # ===== 短信服务配置 (用于验证码) =====
    SMS_PROVIDER: str = Field(default="aliyun", env="SMS_PROVIDER")  # aliyun/tencent
    SMS_ACCESS_KEY_ID: str = Field(default="", env="SMS_ACCESS_KEY_ID")
    SMS_ACCESS_KEY_SECRET: str = Field(default="", env="SMS_ACCESS_KEY_SECRET")
    SMS_SIGN_NAME: str = Field(default="", env="SMS_SIGN_NAME")
    SMS_TEMPLATE_CODE: str = Field(default="", env="SMS_TEMPLATE_CODE")
    
    # ===== 微信支付配置 =====
    WECHAT_PAY_MCHID: str = Field(default="", env="WECHAT_PAY_MCHID")
    WECHAT_PAY_API_V3_KEY: str = Field(default="", env="WECHAT_PAY_API_V3_KEY")
    WECHAT_PAY_SERIAL_NO: str = Field(default="", env="WECHAT_PAY_SERIAL_NO")
    WECHAT_PAY_PRIVATE_KEY_PATH: Optional[str] = Field(default=None, env="WECHAT_PAY_PRIVATE_KEY_PATH")
    WECHAT_PAY_NOTIFY_URL: str = Field(default="", env="WECHAT_PAY_NOTIFY_URL")
    
    # ===== 业务配置 =====
    # 每日对话限制
    DAILY_CHAT_LIMIT_FREE: int = Field(default=20, env="DAILY_CHAT_LIMIT_FREE")
    
    # 初始资源配置
    INITIAL_IMAGE_GEN_LIMIT: int = Field(default=10, env="INITIAL_IMAGE_GEN_LIMIT")
    INITIAL_VIDEO_GEN_LIMIT: int = Field(default=3, env="INITIAL_VIDEO_GEN_LIMIT")
    INITIAL_VOICE_CALL_MINUTES: int = Field(default=5, env="INITIAL_VOICE_CALL_MINUTES")
    
    # 账户注销冷静期（天）
    ACCOUNT_DELETE_COOLDOWN_DAYS: int = Field(default=15, env="ACCOUNT_DELETE_COOLDOWN_DAYS")
    
    # ===== 内容安全配置 =====
    CONTENT_CHECK_ENABLED: bool = Field(default=True, env="CONTENT_CHECK_ENABLED")

    # ===== 聊天与长记忆配置 =====
    CHAT_LIMIT_DAILY: int = Field(default=80, env="CHAT_LIMIT_DAILY")
    CHAT_RECENT_WINDOW: int = Field(default=30, env="CHAT_RECENT_WINDOW")
    CHAT_SUMMARY_TRIGGER_MSGS: int = Field(default=30, env="CHAT_SUMMARY_TRIGGER_MSGS")
    CHAT_SUMMARY_TRIGGER_TOKENS: int = Field(default=6000, env="CHAT_SUMMARY_TRIGGER_TOKENS")
    CHAT_FACT_MAX_ROWS: int = Field(default=50, env="CHAT_FACT_MAX_ROWS")
    CHAT_CONTEXT_MAX_TOKENS: int = Field(default=12000, env="CHAT_CONTEXT_MAX_TOKENS")
    CHAT_STREAMING_DEFAULT: bool = Field(default=True, env="CHAT_STREAMING_DEFAULT")
    INNER_VOICE_DEFAULT: bool = Field(default=False, env="INNER_VOICE_DEFAULT")
    CHAT_REPLY_MAX_CHARS: int = Field(default=0, env="CHAT_REPLY_MAX_CHARS")
    
    # ===== 向量数据库配置 (用于 AI 记忆) =====
    VECTOR_DB_ENABLED: bool = Field(default=False, env="VECTOR_DB_ENABLED")
    VECTOR_DB_TYPE: str = Field(default="chromadb", env="VECTOR_DB_TYPE")  # chromadb/pinecone/milvus
    VECTOR_DB_HOST: Optional[str] = Field(default=None, env="VECTOR_DB_HOST")
    VECTOR_DB_PORT: Optional[int] = Field(default=None, env="VECTOR_DB_PORT")
    
    # ===== 日志配置 =====
    LOG_LEVEL: str = Field(default="INFO", env="LOG_LEVEL")
    LOG_FILE_PATH: Optional[str] = Field(default="logs/app.log", env="LOG_FILE_PATH")

    # 用户信息拉取接口（FastAdmin 提供）
    USER_INFO_API: str = Field(
        default="http://127.0.0.1:30100/api/user_basic/get_user_basic",
        env="USER_INFO_API",
    )

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


# 全局配置实例
settings = Settings()


def get_settings() -> Settings:
    """获取配置实例"""
    return settings