import os
from dotenv import load_dotenv

load_dotenv()

class Config:
    # 邮件协议
    MAIL_PROTOCOL = os.getenv("MAIL_PROTOCOL", "IMAP").upper()
    IMAP_SERVER = os.getenv("IMAP_SERVER")
    POP3_SERVER = os.getenv("POP3_SERVER")
    SMTP_SERVER = os.getenv("SMTP_SERVER")
    MAIL_USER = os.getenv("MAIL_USER")
    MAIL_PASS = os.getenv("MAIL_PASS")
    RECIPIENT_EMAIL = os.getenv("RECIPIENT_EMAIL")
    SMTP_PORT = int(os.getenv("SMTP_PORT", 465))
    IMAP_PORT = int(os.getenv("IMAP_PORT", 993))
    POP3_PORT = int(os.getenv("POP3_PORT", 995))

    # 工具配置
    TEMP_DIR = os.getenv("TEMP_DIR", "./temp")
    KEEP_TEMP_FILES = os.getenv("KEEP_TEMP_FILES", "False").lower() == "true"
    SUPPORTED_INPUT_FORMATS = set(fmt.strip().lower() for fmt in os.getenv("SUPPORTED_INPUT_FORMATS", "jpg,jpeg,png,webp,gif,bmp,tiff").split(","))
    SUPPORTED_OUTPUT_FORMATS = set(fmt.strip().lower() for fmt in os.getenv("SUPPORTED_OUTPUT_FORMATS", "jpg,jpeg,png,webp,gif,bmp,tiff").split(","))
    DEFAULT_QUALITY = int(os.getenv("DEFAULT_QUALITY", 85))

    # 新增功能
    ALLOWED_DOMAINS = [d.strip() for d in os.getenv("ALLOWED_DOMAINS", "").split(",") if d.strip()]
    SPLIT_VOLUME_SIZE_MB = int(os.getenv("SPLIT_VOLUME_SIZE_MB", 0))
    MAX_ATTACHMENT_SIZE_MB = int(os.getenv("MAX_ATTACHMENT_SIZE_MB", 25))
    MAX_EMAILS_PER_RUN = int(os.getenv("MAX_EMAILS_PER_RUN", 10))
    KEEP_ORIGINAL_ATTACHMENT_COUNT = os.getenv("KEEP_ORIGINAL_ATTACHMENT_COUNT", "True").lower() == "true"
    FLATTEN_OUTPUT = os.getenv("FLATTEN_OUTPUT", "False").lower() == "true"

    # 协议同意
    AGREED_TOS = os.getenv("AGREED_TOS", "False").lower() == "true"
    AGREEMENT_FILE = os.getenv("AGREEMENT_FILE", "./AGREED")
    ADMIN_EMAIL = os.getenv("ADMIN_EMAIL", MAIL_USER)

    POLL_INTERVAL_SECONDS = int(os.getenv("POLL_INTERVAL_SECONDS", 60))
    RUN_FOREVER = os.getenv("RUN_FOREVER", "true").lower() == "true"

    @classmethod
    def validate(cls):
        assert cls.MAIL_USER and cls.MAIL_PASS, "邮箱账号密码不能为空"
        assert cls.SMTP_SERVER, "SMTP服务器不能为空"
        if cls.MAIL_PROTOCOL == "IMAP":
            assert cls.IMAP_SERVER, "IMAP服务器不能为空"
        else:
            assert cls.POP3_SERVER, "POP3服务器不能为空"