//
//  RootView.swift
//  Poche
//
//  Author:  Simon-Pierre Boucher
//  Contact: contact@spboucher.ai
//

import SwiftUI
import FoundationModels

/// Gates the whole app on model availability. Each unavailable state is
/// distinct and has its own message and action (CLAUDE.md §2).
struct RootView: View {
    @Environment(\.scenePhase) private var scenePhase
    @State private var availability = SystemLanguageModel.default.availability

    var body: some View {
        Group {
            switch availability {
            case .available:
                ChatView()
            case .unavailable(let reason):
                AvailabilityView(reason: reason) {
                    availability = SystemLanguageModel.default.availability
                }
            }
        }
        .onChange(of: scenePhase) { _, phase in
            // The user may enable Apple Intelligence in Settings and come back.
            if phase == .active {
                availability = SystemLanguageModel.default.availability
            }
        }
    }
}