webp-screenshot-rust 1.0.0

//! ScreenCaptureKit implementation for macOS 12.3+
//! Provides hardware-accelerated screen capture with better performance

use crate::{
    error::{CaptureError, CaptureResult},
    types::{CaptureRegion, PixelFormat, RawImage},
};

/// ScreenCaptureKit wrapper for modern macOS capture
pub struct ScreenCaptureKit {
    // This would contain the actual SCStream and related objects
}

impl ScreenCaptureKit {
    /// Check if ScreenCaptureKit is available (macOS 12.3+)
    pub fn is_available() -> bool {
        // Check macOS version
        if let Ok(version) = Self::get_macos_version() {
            // ScreenCaptureKit requires macOS 12.3 or later
            version.0 > 12 || (version.0 == 12 && version.1 >= 3)
        } else {
            false
        }
    }

    /// Create a new ScreenCaptureKit instance
    pub fn new() -> CaptureResult<Self> {
        if !Self::is_available() {
            return Err(CaptureError::HardwareAccelerationUnavailable(
                "ScreenCaptureKit requires macOS 12.3 or later".to_string(),
            ));
        }

        // In a full implementation:
        // 1. Import ScreenCaptureKit framework
        // 2. Create SCStreamConfiguration
        // 3. Set up SCStream with display content
        // 4. Configure for optimal performance

        // For now, return unavailable
        Err(CaptureError::HardwareAccelerationUnavailable(
            "ScreenCaptureKit implementation pending".to_string(),
        ))
    }

    /// Capture a display using ScreenCaptureKit
    pub fn capture_display(&self, display_index: usize) -> CaptureResult<RawImage> {
        // ScreenCaptureKit requires Objective-C runtime integration
        // For a full implementation, this would use:
        // 1. SCShareableContent.getShareableContentWithCompletionHandler()
        // 2. SCStreamConfiguration with appropriate settings
        // 3. SCStream with sample handler for frames
        // 4. IOSurface/CVPixelBuffer processing

        #[cfg(target_os = "macos")]
        unsafe {
            use objc::{class, msg_send, sel, sel_impl};
            use objc::runtime::{Object, BOOL, YES};
            use core_foundation::base::TCFType;

            // This is a simplified implementation - real ScreenCaptureKit
            // requires proper Objective-C bindings and async handling

            // For now, fall back to CoreGraphics for compatibility
            // In production, this would initialize proper SCStream
            log::warn!("ScreenCaptureKit capture not yet implemented, falling back");
            return Err(CaptureError::HardwareAccelerationUnavailable(
                "ScreenCaptureKit capture implementation pending".to_string(),
            ));
        }

        #[cfg(not(target_os = "macos"))]
        Err(CaptureError::PlatformError(
            "ScreenCaptureKit only available on macOS".to_string(),
        ))
    }

    /// Capture a region using ScreenCaptureKit
    pub fn capture_region(&self, region: CaptureRegion) -> CaptureResult<RawImage> {
        // ScreenCaptureKit region capture would use SCContentFilter
        // to specify the capture area within a display

        #[cfg(target_os = "macos")]
        {
            // In a full implementation:
            // 1. Create SCContentFilter with region bounds
            // 2. Use SCStreamConfiguration with specified region
            // 3. Process captured frames and crop to exact region

            log::warn!("ScreenCaptureKit region capture not yet implemented, falling back");
            return Err(CaptureError::HardwareAccelerationUnavailable(
                "ScreenCaptureKit region capture implementation pending".to_string(),
            ));
        }

        #[cfg(not(target_os = "macos"))]
        Err(CaptureError::PlatformError(
            "ScreenCaptureKit only available on macOS".to_string(),
        ))
    }

    /// Get macOS version
    fn get_macos_version() -> Result<(u32, u32), Box<dyn std::error::Error>> {
        #[cfg(target_os = "macos")]
        {
            use std::process::Command;

            let output = Command::new("sw_vers")
                .arg("-productVersion")
                .output()?;

            let version_str = String::from_utf8(output.stdout)?;
            let parts: Vec<&str> = version_str.trim().split('.').collect();

            if parts.len() >= 2 {
                let major = parts[0].parse::<u32>()?;
                let minor = parts[1].parse::<u32>()?;
                Ok((major, minor))
            } else {
                Err("Invalid macOS version format".into())
            }
        }

        #[cfg(not(target_os = "macos"))]
        Err("Not running on macOS".into())
    }
}

// Note: Full implementation would require:
// 1. Objective-C runtime bindings for ScreenCaptureKit
// 2. CMSampleBuffer to raw pixel conversion
// 3. Async stream handling
// 4. Permission management specific to ScreenCaptureKit