import os
from dataclasses import dataclass

from depth_common import Settings


@dataclass(frozen=True)
class ApiConfig:
    sample_count: int
    frame_timeout_ms: int
    sample_timeout_sec: int
    max_saved_images: int
    request_log_max_len: int
    request_log_max_bytes: int
    request_log_backup_count: int
    api_host: str
    api_port: int
    settings: Settings

    @classmethod
    def from_env(cls) -> "ApiConfig":
        return cls(
            sample_count=int(os.getenv("SAMPLE_COUNT", "10")),
            frame_timeout_ms=int(os.getenv("FRAME_TIMEOUT_MS", "200")),
            sample_timeout_sec=int(os.getenv("SAMPLE_TIMEOUT_SEC", "8")),
            max_saved_images=int(os.getenv("MAX_SAVED_IMAGES", "1000")),
            request_log_max_len=int(os.getenv("REQUEST_LOG_MAX_LEN", "1000")),
            request_log_max_bytes=int(os.getenv("REQUEST_LOG_MAX_BYTES", str(20 * 1024 * 1024))),
            request_log_backup_count=int(os.getenv("REQUEST_LOG_BACKUP_COUNT", "10")),
            api_host=os.getenv("API_HOST", "127.0.0.1"),
            api_port=int(os.getenv("API_PORT", "8080")),
            settings=Settings.from_env(),
        )