voirs-spatial 0.1.0-rc.1

//! Windows Mixed Reality Platform Integration
//!
//! This module provides integration with Microsoft's Windows Mixed Reality platform,
//! supporting various WMR headsets and inside-out tracking.

use crate::platforms::{
    DeviceInfo, EyeTrackingData, HandTrackingData, PlatformCapabilities, PlatformIntegration,
    PlatformTrackingData, PoseData, TrackingConfig, TrackingQuality, TrackingState,
};
use crate::position::{PlatformData, PlatformType};
use crate::types::Position3D;
use crate::{Error, Result};
use async_trait::async_trait;
use std::collections::HashMap;
use tokio::time::Instant;

/// Windows Mixed Reality platform integration
pub struct WMRPlatform {
    device_info: DeviceInfo,
    capabilities: PlatformCapabilities,
    tracking_active: bool,
    config: TrackingConfig,

    // WMR-specific state
    hololens_mode: bool,
    inside_out_tracking: bool,
    spatial_mapping_enabled: bool,
    hand_tracking_available: bool,

    // Device type detection
    device_type: WMRDeviceType,
    last_update: Option<Instant>,
}

/// Windows Mixed Reality device types
#[derive(Debug, Clone, Copy, PartialEq)]
pub enum WMRDeviceType {
    /// HoloLens 1 (limited capabilities)
    HoloLens1,
    /// HoloLens 2 (advanced capabilities with hand tracking)
    HoloLens2,
    /// Samsung Odyssey+ (high-end VR headset)
    SamsungOdyssey,
    /// HP Reverb G2 (high resolution VR)
    HPReverb,
    /// Acer or Dell VR headsets (entry-level)
    EntryLevelVR,
    /// Generic WMR headset
    Generic,
    /// Unsupported device
    Unsupported,
}

impl WMRPlatform {
    /// Create new Windows Mixed Reality platform integration
    pub fn new() -> Self {
        Self {
            device_info: DeviceInfo {
                name: "Windows Mixed Reality".to_string(),
                manufacturer: "Microsoft".to_string(),
                model: "Unknown".to_string(),
                serial_number: "Unknown".to_string(),
                firmware_version: "Unknown".to_string(),
                platform_version: "Unknown".to_string(),
            },
            capabilities: PlatformCapabilities {
                head_tracking_6dof: true,
                hand_tracking: false, // Depends on device
                eye_tracking: false,  // Only on HoloLens 2
                controller_tracking: true,
                room_scale: true,
                passthrough: false, // Only on HoloLens
                refresh_rates: vec![60.0, 90.0],
                tracking_range: 12.0,
            },
            tracking_active: false,
            config: TrackingConfig::default(),
            hololens_mode: false,
            inside_out_tracking: true, // WMR uses inside-out tracking
            spatial_mapping_enabled: false,
            hand_tracking_available: false,
            device_type: WMRDeviceType::Unsupported,
            last_update: None,
        }
    }

    /// Initialize Windows Mixed Reality system
    async fn init_wmr_system(&mut self) -> Result<()> {
        #[cfg(target_os = "windows")]
        {
            self.check_wmr_availability().await?;
            self.detect_device_type().await?;
            self.setup_tracking_systems().await?;
            self.last_update = Some(Instant::now());
            tracing::info!("Windows Mixed Reality initialized successfully");
        }

        #[cfg(not(target_os = "windows"))]
        {
            tracing::warn!("Windows Mixed Reality is only available on Windows");
            Err(Error::LegacyConfig(
                "WMR not available on this platform".to_string(),
            ))
        }
    }

    /// Check if Windows Mixed Reality is available
    async fn check_wmr_availability(&self) -> Result<()> {
        // In a real implementation, this would:
        // 1. Check if Windows Mixed Reality Portal is installed
        // 2. Verify Windows version compatibility (Windows 10 RS4+)
        // 3. Check hardware requirements (cameras, sensors)
        // 4. Validate Windows Mixed Reality service status

        #[cfg(target_os = "windows")]
        {
            tracing::info!("Checking Windows Mixed Reality availability");
            // Would use Windows Runtime APIs and WMR-specific checks
        }

        Ok(())
    }

    /// Detect the specific WMR device type
    async fn detect_device_type(&mut self) -> Result<()> {
        #[cfg(target_os = "windows")]
        {
            // In a real implementation, this would query:
            // - Device registry entries
            // - Hardware identification
            // - Capability detection through Windows Mixed Reality APIs

            // Simulate device detection
            use scirs2_core::random::Rng;
            let mut rng = scirs2_core::random::thread_rng();
            self.device_type = match rng.random_range(0..7) {
                0 => WMRDeviceType::HoloLens2,
                1 => WMRDeviceType::HoloLens1,
                2 => WMRDeviceType::SamsungOdyssey,
                3 => WMRDeviceType::HPReverb,
                4 => WMRDeviceType::EntryLevelVR,
                5 => WMRDeviceType::Generic,
                _ => WMRDeviceType::Unsupported,
            };

            // Update capabilities based on detected device
            match self.device_type {
                WMRDeviceType::HoloLens2 => {
                    self.device_info.model = "HoloLens 2".to_string();
                    self.device_info.manufacturer = "Microsoft".to_string();
                    self.capabilities.hand_tracking = true;
                    self.capabilities.eye_tracking = true;
                    self.capabilities.passthrough = true; // AR device
                    self.capabilities.refresh_rates = vec![60.0];
                    self.capabilities.tracking_range = 20.0; // Larger for AR
                    self.hololens_mode = true;
                    self.hand_tracking_available = true;
                    self.spatial_mapping_enabled = true;
                }
                WMRDeviceType::HoloLens1 => {
                    self.device_info.model = "HoloLens 1".to_string();
                    self.device_info.manufacturer = "Microsoft".to_string();
                    self.capabilities.hand_tracking = false; // Air tap gestures only
                    self.capabilities.eye_tracking = false;
                    self.capabilities.passthrough = true; // AR device
                    self.capabilities.refresh_rates = vec![60.0];
                    self.capabilities.tracking_range = 15.0;
                    self.hololens_mode = true;
                    self.spatial_mapping_enabled = true;
                }
                WMRDeviceType::SamsungOdyssey => {
                    self.device_info.model = "Samsung Odyssey+".to_string();
                    self.device_info.manufacturer = "Samsung".to_string();
                    self.capabilities.refresh_rates = vec![90.0];
                    self.capabilities.tracking_range = 15.0;
                }
                WMRDeviceType::HPReverb => {
                    self.device_info.model = "HP Reverb G2".to_string();
                    self.device_info.manufacturer = "HP".to_string();
                    self.capabilities.refresh_rates = vec![90.0];
                    self.capabilities.tracking_range = 12.0;
                }
                WMRDeviceType::EntryLevelVR => {
                    self.device_info.model = "Entry-level WMR Headset".to_string();
                    self.capabilities.refresh_rates = vec![60.0, 90.0];
                    self.capabilities.tracking_range = 10.0;
                }
                WMRDeviceType::Generic => {
                    self.device_info.model = "Generic WMR Headset".to_string();
                    self.capabilities.refresh_rates = vec![60.0, 90.0];
                    self.capabilities.tracking_range = 12.0;
                }
                WMRDeviceType::Unsupported => {
                    return Err(Error::LegacyConfig("Unsupported WMR device".to_string()));
                }
            }

            self.device_info.platform_version = "WMR 2.0+".to_string();
            tracing::info!("Detected WMR device: {:?}", self.device_type);
        }

        #[cfg(not(target_os = "windows"))]
        {
            self.device_type = WMRDeviceType::Unsupported;
        }

        Ok(())
    }

    /// Setup WMR tracking systems
    async fn setup_tracking_systems(&mut self) -> Result<()> {
        // In a real implementation, this would:
        // 1. Initialize spatial coordinate system
        // 2. Set up camera-based tracking
        // 3. Configure controller tracking
        // 4. Enable spatial mapping (for HoloLens)
        // 5. Set up hand tracking (if available)

        tracing::info!("Setting up WMR tracking systems");

        // Configure based on device capabilities
        if self.hololens_mode {
            self.spatial_mapping_enabled = true;
            tracing::info!("Enabled spatial mapping for HoloLens");
        }

        Ok(())
    }

    /// Get simulated WMR tracking data
    fn get_simulated_tracking(&self) -> PlatformTrackingData {
        let now = Instant::now();
        let time = now.elapsed().as_secs_f32();

        // WMR tracking characteristics
        let position = if self.hololens_mode {
            // HoloLens users tend to move around more and look at different things
            Position3D::new(
                (time * 0.02).sin() * 3.0,       // Larger movement range
                1.7 + (time * 0.01).cos() * 0.1, // Natural height variation
                (time * 0.015).cos() * 2.5,      // Walking around
            )
        } else {
            // VR headset users in more constrained space
            Position3D::new(
                (time * 0.03).sin() * 1.0,  // Limited side movement
                1.7,                        // Fixed height
                (time * 0.025).cos() * 0.8, // Small forward/back
            )
        };

        // WMR inside-out tracking has good orientation tracking
        let yaw = (time * 0.015).sin() * 0.3;
        let pitch = (time * 0.012).cos() * 0.15;
        let roll = (time * 0.008).sin() * 0.05; // Less roll than mobile devices

        let half_yaw = yaw * 0.5;
        let half_pitch = pitch * 0.5;
        let half_roll = roll * 0.5;

        let cos_yaw = half_yaw.cos();
        let sin_yaw = half_yaw.sin();
        let cos_pitch = half_pitch.cos();
        let sin_pitch = half_pitch.sin();
        let cos_roll = half_roll.cos();
        let sin_roll = half_roll.sin();

        let orientation = (
            sin_roll * cos_pitch * cos_yaw - cos_roll * sin_pitch * sin_yaw,
            cos_roll * sin_pitch * cos_yaw + sin_roll * cos_pitch * sin_yaw,
            cos_roll * cos_pitch * sin_yaw - sin_roll * sin_pitch * cos_yaw,
            cos_roll * cos_pitch * cos_yaw + sin_roll * sin_pitch * sin_yaw,
        );

        let base_confidence = match self.device_type {
            WMRDeviceType::HoloLens2 => 0.95,      // Excellent tracking
            WMRDeviceType::SamsungOdyssey => 0.92, // Very good
            WMRDeviceType::HPReverb => 0.90,       // Good
            WMRDeviceType::HoloLens1 => 0.85,      // Decent but older
            WMRDeviceType::EntryLevelVR => 0.80,   // Acceptable
            WMRDeviceType::Generic => 0.75,        // Basic
            WMRDeviceType::Unsupported => 0.50,    // Poor
        };

        let head_pose = PoseData {
            position,
            orientation,
            linear_velocity: Position3D::new(0.0, 0.0, 0.0),
            angular_velocity: Position3D::new(roll * 0.1, yaw * 0.1, pitch * 0.1),
            confidence: base_confidence,
        };

        // Simulate controller tracking
        let (left_controller, right_controller) = if !self.hololens_mode {
            // VR headsets have controllers
            let left_pos = Position3D::new(
                position.x - 0.3 + (time * 0.1).sin() * 0.1,
                position.y - 0.2 + (time * 0.15).cos() * 0.05,
                position.z + 0.2,
            );
            let right_pos = Position3D::new(
                position.x + 0.3 + (time * 0.12).sin() * 0.1,
                position.y - 0.2 + (time * 0.18).cos() * 0.05,
                position.z + 0.2,
            );

            (
                Some(PoseData::new(left_pos, (0.0, 0.0, 0.0, 1.0))),
                Some(PoseData::new(right_pos, (0.0, 0.0, 0.0, 1.0))),
            )
        } else {
            // HoloLens doesn't use controllers
            (None, None)
        };

        // Environmental factors affecting WMR tracking
        let lighting_factor = if self.hololens_mode { 0.9 } else { 1.0 }; // HoloLens affected by lighting
        let motion_factor = 1.0 - (time % 20.0 / 20.0) * 0.1; // Slight degradation over time
        let final_quality = base_confidence * lighting_factor * motion_factor;

        PlatformTrackingData {
            head_pose,
            left_controller,
            right_controller,
            quality: TrackingQuality {
                overall_quality: final_quality,
                position_quality: final_quality * 0.98, // WMR has good position tracking
                orientation_quality: final_quality * 1.02,
                feature_count: match self.device_type {
                    WMRDeviceType::HoloLens2 => 200,
                    WMRDeviceType::SamsungOdyssey => 120,
                    WMRDeviceType::HPReverb => 100,
                    WMRDeviceType::HoloLens1 => 80,
                    WMRDeviceType::EntryLevelVR => 60,
                    WMRDeviceType::Generic => 50,
                    WMRDeviceType::Unsupported => 20,
                },
                state: if final_quality > 0.85 {
                    TrackingState::Full
                } else if final_quality > 0.6 {
                    TrackingState::Limited
                } else {
                    TrackingState::Lost
                },
            },
            timestamp: now,
            raw_data: PlatformData {
                device_id: "WMR".to_string(),
                pose_data: vec![],
                tracking_confidence: final_quality,
                platform_timestamp: 0,
                properties: {
                    let mut props = HashMap::new();
                    props.insert("device_type".to_string(), format!("{:?}", self.device_type));
                    props.insert("hololens_mode".to_string(), self.hololens_mode.to_string());
                    props.insert(
                        "inside_out_tracking".to_string(),
                        self.inside_out_tracking.to_string(),
                    );
                    props.insert(
                        "spatial_mapping".to_string(),
                        self.spatial_mapping_enabled.to_string(),
                    );
                    props.insert(
                        "hand_tracking_available".to_string(),
                        self.hand_tracking_available.to_string(),
                    );
                    props
                },
            },
        }
    }
}

#[async_trait]
impl PlatformIntegration for WMRPlatform {
    async fn initialize(&mut self) -> Result<()> {
        self.init_wmr_system().await
    }

    async fn get_tracking_data(&self) -> Result<PlatformTrackingData> {
        if !self.tracking_active {
            return Err(Error::LegacyProcessing(
                "WMR tracking not active".to_string(),
            ));
        }

        Ok(self.get_simulated_tracking())
    }

    async fn is_available(&self) -> bool {
        #[cfg(target_os = "windows")]
        {
            self.last_update.is_some() && !matches!(self.device_type, WMRDeviceType::Unsupported)
        }

        #[cfg(not(target_os = "windows"))]
        {
            false
        }
    }

    fn get_capabilities(&self) -> PlatformCapabilities {
        self.capabilities.clone()
    }

    async fn configure_tracking(&mut self, config: TrackingConfig) -> Result<()> {
        self.config = config;
        tracing::info!("Configured WMR tracking with config: {:?}", self.config);
        Ok(())
    }

    fn get_device_info(&self) -> DeviceInfo {
        self.device_info.clone()
    }

    async fn start_tracking(&mut self) -> Result<()> {
        if self.last_update.is_none() {
            return Err(Error::LegacyProcessing(
                "WMR system not initialized".to_string(),
            ));
        }

        self.tracking_active = true;
        self.last_update = Some(Instant::now());
        tracing::info!("Started WMR tracking");
        Ok(())
    }

    async fn stop_tracking(&mut self) -> Result<()> {
        self.tracking_active = false;
        tracing::info!("Stopped WMR tracking");
        Ok(())
    }

    async fn get_hand_tracking(&self) -> Result<Option<HandTrackingData>> {
        if !self.config.enable_hand_tracking || !self.hand_tracking_available {
            return Ok(None);
        }

        // Only HoloLens 2 has proper hand tracking
        if matches!(self.device_type, WMRDeviceType::HoloLens2) {
            // In real implementation, would return actual hand tracking data
            Ok(None) // Placeholder
        } else {
            Ok(None)
        }
    }

    async fn get_eye_tracking(&self) -> Result<Option<EyeTrackingData>> {
        if !self.config.enable_eye_tracking || !self.capabilities.eye_tracking {
            return Ok(None);
        }

        // Only HoloLens 2 has eye tracking
        if matches!(self.device_type, WMRDeviceType::HoloLens2) {
            // In real implementation, would return actual eye tracking data
            Ok(None) // Placeholder
        } else {
            Ok(None)
        }
    }
}

impl Default for WMRPlatform {
    fn default() -> Self {
        Self::new()
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[tokio::test]
    async fn test_wmr_platform_creation() {
        let platform = WMRPlatform::new();
        assert!(!platform.tracking_active);
        assert!(platform.inside_out_tracking);
        assert_eq!(platform.device_info.manufacturer, "Microsoft");
        assert_eq!(platform.device_type, WMRDeviceType::Unsupported);
    }

    #[tokio::test]
    async fn test_wmr_capabilities() {
        let platform = WMRPlatform::new();
        let capabilities = platform.get_capabilities();

        assert!(capabilities.head_tracking_6dof);
        assert!(capabilities.controller_tracking);
        assert!(capabilities.room_scale);
        assert!(!capabilities.passthrough); // Default for VR headsets
    }

    #[cfg(target_os = "windows")]
    #[tokio::test]
    async fn test_wmr_initialization_windows() {
        let mut platform = WMRPlatform::new();
        let result = platform.initialize().await;

        // May succeed or fail depending on simulated device
        if result.is_ok() {
            assert!(platform.last_update.is_some());
            assert_ne!(platform.device_type, WMRDeviceType::Unsupported);
        }
    }

    #[cfg(not(target_os = "windows"))]
    #[tokio::test]
    async fn test_wmr_initialization_non_windows() {
        let mut platform = WMRPlatform::new();
        let result = platform.initialize().await;

        // Should fail on non-Windows platforms
        assert!(result.is_err());
        assert!(!platform.is_available().await);
    }

    #[tokio::test]
    async fn test_hololens_capabilities() {
        let mut platform = WMRPlatform::new();

        // Manually configure as HoloLens 2 for testing
        platform.device_type = WMRDeviceType::HoloLens2;
        platform.hololens_mode = true;
        platform.capabilities.passthrough = true;
        platform.capabilities.hand_tracking = true;
        platform.capabilities.eye_tracking = true;
        platform.spatial_mapping_enabled = true;

        assert!(platform.hololens_mode);
        assert!(platform.capabilities.passthrough); // AR device
        assert!(platform.capabilities.hand_tracking);
        assert!(platform.capabilities.eye_tracking);
        assert!(platform.spatial_mapping_enabled);
    }

    #[tokio::test]
    async fn test_vr_headset_capabilities() {
        let mut platform = WMRPlatform::new();

        // Manually configure as Samsung Odyssey for testing
        platform.device_type = WMRDeviceType::SamsungOdyssey;
        platform.hololens_mode = false;
        platform.capabilities.passthrough = false;
        platform.capabilities.hand_tracking = false;
        platform.capabilities.eye_tracking = false;
        platform.capabilities.refresh_rates = vec![90.0];

        assert!(!platform.hololens_mode);
        assert!(!platform.capabilities.passthrough); // VR device
        assert!(!platform.capabilities.hand_tracking);
        assert!(!platform.capabilities.eye_tracking);
        assert_eq!(platform.capabilities.refresh_rates, vec![90.0]);
    }

    #[tokio::test]
    async fn test_tracking_simulation() {
        let mut platform = WMRPlatform::new();
        platform.device_type = WMRDeviceType::HPReverb;
        platform.tracking_active = true;
        platform.last_update = Some(Instant::now());

        let tracking_data = platform.get_simulated_tracking();

        // VR headset should have controller tracking
        assert!(tracking_data.left_controller.is_some());
        assert!(tracking_data.right_controller.is_some());
        assert!(tracking_data.quality.overall_quality > 0.8);

        // Check properties
        let props = &tracking_data.raw_data.properties;
        assert_eq!(props.get("hololens_mode").unwrap(), "false");
        assert_eq!(props.get("inside_out_tracking").unwrap(), "true");
    }

    #[tokio::test]
    async fn test_hololens_tracking_simulation() {
        let mut platform = WMRPlatform::new();
        platform.device_type = WMRDeviceType::HoloLens2;
        platform.hololens_mode = true;
        platform.spatial_mapping_enabled = true;
        platform.tracking_active = true;
        platform.last_update = Some(Instant::now());

        let tracking_data = platform.get_simulated_tracking();

        // HoloLens doesn't have controllers
        assert!(tracking_data.left_controller.is_none());
        assert!(tracking_data.right_controller.is_none());
        assert!(tracking_data.quality.overall_quality > 0.8); // Be more lenient due to environmental factors

        // Check HoloLens-specific properties
        let props = &tracking_data.raw_data.properties;
        assert_eq!(props.get("hololens_mode").unwrap(), "true");
        assert_eq!(props.get("spatial_mapping").unwrap(), "true");
    }
}