Email Send/Receive MCP Server

""" Configuration management for the Email MCP server. """ import os from typing import Optional from pydantic_settings import BaseSettings, SettingsConfigDict from pydantic import Field, field_validator class Settings(BaseSettings): """Application settings.""" # Application VERSION: str = "1.0.0" DEBUG: bool = Field(default=False) LOG_LEVEL: str = Field(default="INFO") # SMTP Configuration SMTP_SERVER: str = Field(default="smtp.gmail.com") SMTP_PORT: int = Field(default=587) SMTP_USERNAME: str = Field(default="") SMTP_PASSWORD: str = Field(default="") SMTP_USE_TLS: bool = Field(default=True) # IMAP Configuration IMAP_SERVER: str = Field(default="imap.gmail.com") IMAP_PORT: int = Field(default=993) IMAP_USERNAME: str = Field(default="") IMAP_PASSWORD: str = Field(default="") IMAP_USE_SSL: bool = Field(default=True) # POP3 Configuration POP3_SERVER: str = Field(default="pop.gmail.com") POP3_PORT: int = Field(default=995) POP3_USERNAME: str = Field(default="") POP3_PASSWORD: str = Field(default="") POP3_USE_SSL: bool = Field(default=True) # Email Settings DEFAULT_FROM_EMAIL: str = Field(default="") DEFAULT_FROM_NAME: str = Field(default="MCP Email Server") MAX_ATTACHMENT_SIZE_MB: int = Field(default=25) model_config = SettingsConfigDict( env_file=".env", env_file_encoding="utf-8", case_sensitive=True, extra="ignore" ) @field_validator("SMTP_PORT", "IMAP_PORT", "POP3_PORT") @classmethod def validate_port(cls, v: int) -> int: """Validate port numbers are in valid range.""" if not (1 <= v <= 65535): raise ValueError(f"Port must be between 1 and 65535, got {v}") return v # Global settings instance _settings: Optional[Settings] = None def get_settings() -> Settings: """Get application settings (singleton pattern).""" global _settings if _settings is None: _settings = Settings() return _settings