"""Configuration for the local motion capture agent."""

from __future__ import annotations

import os
from dataclasses import dataclass, field

SUPPORTED_INPUT_MODES = {"auto", "single", "dual", "dual_redundant", "single_fallback", "calibrated_3d"}


def _parse_camera_indexes(raw: str | None) -> tuple[int, ...]:
    if not raw:
        return (0,)
    indexes: list[int] = []
    for item in raw.split(","):
        value = item.strip()
        if not value:
            continue
        indexes.append(int(value))
    return tuple(indexes or [0])


def _parse_camera_urls(raw: str | None) -> tuple[str, ...]:
    if not raw:
        return ()
    return tuple(item.strip() for item in raw.split(",") if item.strip())


@dataclass(frozen=True)
class MotionAgentConfig:
    host: str = "127.0.0.1"
    port: int = 8765
    path: str = "/ws/gestures"
    camera_indexes: tuple[int, ...] = field(default_factory=lambda: (0,))
    camera_urls: tuple[str, ...] = field(default_factory=tuple)
    camera_width: int = 640
    camera_height: int = 360
    camera_fps: int = 30
    mode: str = "auto"
    confidence_threshold: float = 0.72
    cooldown_ms: int = 450
    heartbeat_interval_ms: int = 1000
    max_event_hz: int = 15
    max_skeleton_hz: int = 8
    fusion_window_ms: int = 120
    fusion_conflict_delta: float = 0.18
    dry_run: bool = False

    @property
    def websocket_url(self) -> str:
        return f"ws://{self.host}:{self.port}{self.path}"

    @classmethod
    def from_env(cls) -> "MotionAgentConfig":
        return cls(
            host=os.getenv("MOTION_AGENT_HOST", "127.0.0.1"),
            port=int(os.getenv("MOTION_AGENT_PORT", "8765")),
            path=os.getenv("MOTION_AGENT_PATH", "/ws/gestures"),
            camera_indexes=_parse_camera_indexes(os.getenv("MOTION_AGENT_CAMERA_INDEXES")),
            camera_urls=_parse_camera_urls(os.getenv("MOTION_AGENT_CAMERA_URLS")),
            camera_width=int(os.getenv("MOTION_AGENT_CAMERA_WIDTH", "640")),
            camera_height=int(os.getenv("MOTION_AGENT_CAMERA_HEIGHT", "360")),
            camera_fps=int(os.getenv("MOTION_AGENT_CAMERA_FPS", "30")),
            mode=os.getenv("MOTION_AGENT_MODE", "auto"),
            confidence_threshold=float(os.getenv("MOTION_AGENT_CONFIDENCE_THRESHOLD", "0.72")),
            cooldown_ms=int(os.getenv("MOTION_AGENT_COOLDOWN_MS", "450")),
            heartbeat_interval_ms=int(os.getenv("MOTION_AGENT_HEARTBEAT_MS", "1000")),
            max_event_hz=int(os.getenv("MOTION_AGENT_MAX_EVENT_HZ", "15")),
            max_skeleton_hz=int(os.getenv("MOTION_AGENT_MAX_SKELETON_HZ", "8")),
            fusion_window_ms=int(os.getenv("MOTION_AGENT_FUSION_WINDOW_MS", "120")),
            fusion_conflict_delta=float(os.getenv("MOTION_AGENT_FUSION_CONFLICT_DELTA", "0.18")),
            dry_run=os.getenv("MOTION_AGENT_DRY_RUN", "").lower() in {"1", "true", "yes"},
        )