from pydantic_settings import BaseSettings
from typing import List


class Settings(BaseSettings):
    app_name: str = "ai-flow"

    # 日志级别
    log_level: str = "INFO"

    # Redis
    redis_host: str
    redis_port: int
    redis_password: str
    redis_db: int = 0
    redis_timeout: int = 2000

    # 存储后端: "redis" 或 "local"
    store_backend: str = "redis"

    # Redis Pub/Sub
    redis_publish_enabled: bool = True
    redis_publish_channel: str = "WORKFLOW_TASK"

    # 工作流线程池
    executor_pool_size: int = 8
    http_timeout: int = 300
    step_retry_count: int = 1

    # 模板缓存
    template_cache_enabled: bool = True
    template_cache_dir: str = "data/templates"
    template_download_timeout: int = 30000
    template_download_max_size: int = 104857600

    # API Key 认证
    api_auth_enabled: bool = False
    api_auth_keys: List[str] = []
    api_auth_header_name: str = "Authorization"
    api_auth_prefix: str = "Bearer"
    api_auth_error_message: str = "Invalid API Key"

    # 本地存储
    task_store_data_dir: str = "data/tasks"

    # 阿里云 OSS
    aliyun_endpoint: str
    aliyun_access_key_id: str
    aliyun_access_key_secret: str
    aliyun_bucket_name: str

    # Google Cloud Storage
    gcs_project_id: str
    gcs_bucket_name: str
    gcs_credentials_json: str = ""
    gcs_credentials_file: str = ""

    # Gemini API
    gemini_api_key: str
    gemini_base_url: str
    gemini_nano_banana_model: str
    gemini_veo3_model: str

    # Kontext (BFL) API
    kontext_api_key: str
    kontext_pro_url: str
    kontext_max_url: str

    # Keling API
    keling_app_key: str
    keling_app_secret: str
    keling_image2video_url: str
    keling_video2effect_url: str

    # SeedDance / SeedDream API
    seed_api_key: str
    seedance_video_url: str
    seedream_image_url: str

    # 资源路径
    resources_path: str = "resources"

    model_config = {"env_prefix": "AI_FLOW_", "env_file": ".env"}


settings = Settings()