"""Runtime configuration for the officeconvert Connect server."""

from __future__ import annotations

from dataclasses import dataclass
import os


@dataclass(frozen=True, slots=True)
class ServerConfig:
    """Defines environment-driven settings for server orchestration."""

    s3_bucket: str
    s3_endpoint: str
    s3_access_key: str
    s3_secret_key: str
    s3_secure: bool
    s3_region: str | None
    s3_public_endpoint: str
    s3_public_secure: bool
    s3_session_ttl_seconds: int
    conversion_pptx_to_pdf_timeout_seconds: int
    conversion_pdf_to_images_timeout_seconds: int
    conversion_pptx_to_pdf_base_timeout_seconds: int
    conversion_pptx_to_pdf_per_slide_timeout_seconds: int
    conversion_pdf_to_images_base_timeout_seconds: int
    conversion_pdf_to_images_per_slide_timeout_seconds: int
    conversion_cleanup_delay_seconds: int


def load_server_config() -> ServerConfig:
    """Load server configuration from environment variables."""
    s3_secure = os.getenv("S3_USE_SSL", "false").lower() == "true"
    public_ssl_env = os.getenv("S3_PUBLIC_USE_SSL", "").strip()
    s3_public_secure = (
        public_ssl_env.lower() == "true"
        if public_ssl_env
        else s3_secure
    )
    region_env = os.getenv("S3_REGION", "").strip()
    s3_bucket = os.getenv("S3_BUCKET", "").strip()
    if not s3_bucket:
        raise ValueError("S3_BUCKET is required")
    return ServerConfig(
        s3_bucket=s3_bucket,
        s3_endpoint=os.getenv("S3_ENDPOINT", "localhost:8333"),
        s3_access_key=os.getenv("S3_ACCESS_KEY", "minioadmin"),
        s3_secret_key=os.getenv("S3_SECRET_KEY", "minioadmin"),
        s3_secure=s3_secure,
        s3_region=region_env or None,
        s3_public_endpoint=os.getenv("S3_PUBLIC_ENDPOINT", "localhost:8333"),
        s3_public_secure=s3_public_secure,
        s3_session_ttl_seconds=int(os.getenv("S3_SESSION_TTL_SECONDS", "3600")),
        conversion_pptx_to_pdf_timeout_seconds=int(
            os.getenv("CONVERSION_PPTX_TO_PDF_TIMEOUT_SECONDS", "180")
        ),
        conversion_pdf_to_images_timeout_seconds=int(
            os.getenv("CONVERSION_PDF_TO_IMAGES_TIMEOUT_SECONDS", "1800")
        ),
        conversion_pptx_to_pdf_base_timeout_seconds=int(
            os.getenv("CONVERSION_PPTX_TO_PDF_BASE_TIMEOUT_SECONDS", "45")
        ),
        conversion_pptx_to_pdf_per_slide_timeout_seconds=int(
            os.getenv("CONVERSION_PPTX_TO_PDF_PER_SLIDE_TIMEOUT_SECONDS", "3")
        ),
        conversion_pdf_to_images_base_timeout_seconds=int(
            os.getenv("CONVERSION_PDF_TO_IMAGES_BASE_TIMEOUT_SECONDS", "30")
        ),
        conversion_pdf_to_images_per_slide_timeout_seconds=int(
            os.getenv("CONVERSION_PDF_TO_IMAGES_PER_SLIDE_TIMEOUT_SECONDS", "8")
        ),
        conversion_cleanup_delay_seconds=int(
            os.getenv("CONVERSION_CLEANUP_DELAY_SECONDS", "3600")
        ),
    )