ウィジェットや Live Activities が要件に入った日に、Rork Max へ移すかを運用コストで決める

import WidgetKit
import SwiftUI
 
struct StatusEntry: TimelineEntry {
    let date: Date
    let summary: String
}
 
struct StatusProvider: TimelineProvider {
    func placeholder(in context: Context) -> StatusEntry {
        StatusEntry(date: Date(), summary: "—")
    }
 
    func getSnapshot(in context: Context, completion: @escaping (StatusEntry) -> Void) {
        completion(StatusEntry(date: Date(), summary: readShared()))
    }
 
    func getTimeline(in context: Context, completion: @escaping (Timeline<StatusEntry>) -> Void) {
        let entry = StatusEntry(date: Date(), summary: readShared())
        // 15分後に一度だけ更新（リロード予算を浪費しない方針）
        let next = Calendar.current.date(byAdding: .minute, value: 15, to: Date())!
        completion(Timeline(entries: [entry], policy: .after(next)))
    }
 
    private func readShared() -> String {
        let defaults = UserDefaults(suiteName: "group.com.example.app")
        return defaults?.string(forKey: "widget_summary") ?? "—"
    }
}

// JS 側。ネイティブモジュールを自前で用意し、App Group の UserDefaults に書く
import { NativeModules } from "react-native";
 
const { WidgetBridge } = NativeModules;
 
export async function pushWidgetSummary(summary: string) {
  // WidgetBridge は Swift 側で App Group に書き込み、WidgetCenter.reloadAllTimelines() を呼ぶ
  await WidgetBridge.setSummary(summary);
}

import ActivityKit
 
struct DeliveryAttributes: ActivityAttributes {
    struct ContentState: Codable, Hashable {
        var stage: String
        var etaMinutes: Int
    }
    var orderId: String
}
 
func startDelivery(orderId: String) throws {
    let attributes = DeliveryAttributes(orderId: orderId)
    let initial = DeliveryAttributes.ContentState(stage: "受付", etaMinutes: 30)
    _ = try Activity.request(
        attributes: attributes,
        content: .init(state: initial, staleDate: nil)
    )
}