mycode/myApp/Keging/KegingWatch Watch App/WatchCoordinator.swift

//
//  WatchCoordinator.swift
//  KegingWatch Watch App
//
//  엔진 ↔ 워치 진동·확장 런타임 세션·폰 기록 전송 배선. 진동은 워치에서만 울린다.
//

import Foundation

@MainActor
final class WatchCoordinator {
    static let shared = WatchCoordinator()

    private var wired = false

    private init() {}

    func wire() {
        guard !wired else { return }
        wired = true

        let engine = KegelEngine.shared
        engine.onPhaseChange = { [weak engine] phase, _, _ in
            guard let engine else { return }
            let config = engine.config
            switch phase {
            case .prepare: break  // 준비는 무진동
            case .contract: WatchHaptics.play(config.contractPattern)
            case .relax: WatchHaptics.play(config.relaxPattern)
            }
        }
        engine.onSessionEnd = { completed, record in
            WatchWorkoutSession.shared.end(completed: completed, effortScore: SettingsStore.shared.config.effortScore)
            if completed, let record {
                WatchSync.shared.sendRecord(record)
                WatchHaptics.playSuccess()
            }
        }
    }

    func startWorkout() {
        guard !KegelEngine.shared.isRunning else { return }
        KegelEngine.shared.start(config: SettingsStore.shared.config)
        WatchWorkoutSession.shared.begin(startDate: Date())
    }

    func stopWorkout() {
        KegelEngine.shared.stop()
    }
}