//
//  DeviceCapabilities.swift
//  Focale
//
//  Author: Simon-Pierre Boucher
//  Contact: contact@spboucher.ai
//
//  Every hardware capability is queried before a control is exposed
//  (CLAUDE.md §4): no dead buttons, no assumptions about iPhone model.
//

import Foundation

/// Sendable snapshot of what the active capture device supports.
struct DeviceCapabilities: Sendable {
    var availableLenses: [LensKind]
    var supportsProRAW: Bool
    var isoRange: ClosedRange<Float>
    var shutterRange: ClosedRange<Double>      // seconds
    var exposureBiasRange: ClosedRange<Float>  // EV
    var maxWhiteBalanceGain: Float
    var maxZoomFactor: Double
    var supportsManualFocus: Bool
    var hasDepthCapture: Bool                  // LiDAR / depth for SceneSignal
    var hasFlash: Bool

    static let none = DeviceCapabilities(
        availableLenses: [],
        supportsProRAW: false,
        isoRange: 100...100,
        shutterRange: 0.008...0.008,
        exposureBiasRange: 0...0,
        maxWhiteBalanceGain: 1,
        maxZoomFactor: 1,
        supportsManualFocus: false,
        hasDepthCapture: false,
        hasFlash: false
    )

    func supports(_ control: CaptureControl) -> Bool {
        switch control {
        case .iso: isoRange.lowerBound < isoRange.upperBound
        case .shutterSpeed: shutterRange.lowerBound < shutterRange.upperBound
        case .exposureBias: exposureBiasRange.lowerBound < exposureBiasRange.upperBound
        case .focus: supportsManualFocus
        case .whiteBalance: maxWhiteBalanceGain > 1
        case .zoom: maxZoomFactor > 1
        }
    }
}