//
//  HardwareGate.swift
//  Zyquo MLX
//
//  Author: Simon-Pierre Boucher
//  Mail: contact@spboucher.ai
//

import Foundation
import SwiftUI

/// MLX requires Apple Silicon. The binary itself is arm64-only, so on an
/// Intel Mac it will not load at all — this runtime check is defense in depth
/// (e.g. exotic translation environments) and drives the polite
/// unsupported-hardware screen required by the project charter.
enum HardwareGate {

    /// True when running natively on Apple Silicon.
    static let isAppleSilicon: Bool = {
        var value: Int32 = 0
        var size = MemoryLayout<Int32>.size
        // hw.optional.arm64 is 1 on Apple Silicon, absent/0 elsewhere.
        let result = sysctlbyname("hw.optional.arm64", &value, &size, nil, 0)
        return result == 0 && value == 1
    }()
}

/// Polite, clear unsupported-hardware screen (charter requirement).
struct UnsupportedHardwareView: View {
    var body: some View {
        VStack(spacing: 16) {
            Image(systemName: "cpu")
                .font(.system(size: 48, weight: .light))
                .foregroundStyle(.secondary)
            Text("Apple Silicon Required")
                .font(.title2.weight(.semibold))
            Text("Zyquo MLX is built on MLX, Apple's machine-learning framework, which runs exclusively on Apple Silicon (M-series) Macs. This Mac does not support it.")
                .multilineTextAlignment(.center)
                .foregroundStyle(.secondary)
                .frame(maxWidth: 420)
        }
        .padding(48)
        .frame(minWidth: 560, minHeight: 360)
    }
}