"""Application-wide constants and default settings."""

from pathlib import Path

APP_NAME = "Duck Preview"
APP_VERSION = "0.1.0"

# Default camera settings
DEFAULT_FPS = 30
DEFAULT_WIDTH = 1280
DEFAULT_HEIGHT = 720

# Telemetry
TELEMETRY_UPDATE_INTERVAL_MS = 500  # how often the metrics snapshot is refreshed

# Overlay
OVERLAY_BG_COLOR = (0, 0, 0, 160)   # RGBA
OVERLAY_TEXT_COLOR = (255, 255, 255, 255)
OVERLAY_FONT_SIZE = 13
OVERLAY_PADDING = 10
OVERLAY_MARGIN = 10

# Frame dispatcher
DISPATCHER_MAX_QUEUE_SIZE = 2  # max pending frames per slow subscriber before drop

# Logging
LOG_DIR = Path("logs")              # relative to CWD (project root)
MAX_LOG_FILES = 20                  # oldest sessions are deleted when exceeded
TELEMETRY_CSV_INTERVAL_S = 5.0     # how often a CSV row is written (seconds)