//
//  WorkoutsApp.swift
//  Workouts
//
//  Copyright 2025 Rouslan Zenetl. All Rights Reserved.
//

import SwiftUI
import SwiftData
import UIKit

@main
struct WorkoutsApp: App {
    @State private var services = AppServices()
    @Environment(\.scenePhase) private var scenePhase

    var body: some Scene {
        WindowGroup {
            #if DEBUG
            if ScreenshotSeed.isActive {
                ScreenshotRootView(services: services)
            } else {
                root
            }
            #else
            root
            #endif
        }
        // Keep the screen lit for the whole app, not just while logging — the phone is
        // often propped up across the room during a workout. iOS clears this flag when
        // the app is backgrounded, so re-assert it each time the scene becomes active.
        .onChange(of: scenePhase, initial: true) { _, phase in
            UIApplication.shared.isIdleTimerDisabled = (phase == .active)
            // An editor left open when the app leaves the foreground must not keep the
            // watch's run parked ("Editing on iPhone…") — suspend the published edit
            // locks while backgrounded; returning to the editor re-asserts them.
            services.watchBridge.setLocksSuspended(phase != .active)
            // Last chance before suspension: push any queued document writes out
            // now rather than waiting out a retry backoff we may not live to see.
            if phase == .background {
                Task { await services.syncEngine.flushPendingWrites() }
            }
        }
    }

    private var root: some View {
        RootGateView()
            .environment(services)
            .environment(services.syncEngine)
            .environment(services.liveRunState)
            .modelContainer(services.container)
            .task { await services.bootstrap() }
            // Tap a shared ".workoutsbackup" file (Files, AirDrop, share sheet) to
            // restore it. The controller stops the sync observer for the restore and
            // rebuilds the cache afterward (see AppBackupConfiguration).
            .onOpenURL { url in
                guard url.pathExtension == "workoutsbackup" else { return }
                Task { try? await services.backupController.restoreBackup(from: url) }
            }
    }
}