ios-tracker/HabitTracker/Support/WidgetSync.swift

import Foundation
import SwiftData
import WidgetKit

enum WidgetSync {
    /// Writes the current habits to the shared store and reloads widget timelines.
    static func refresh(_ context: ModelContext) {
        let descriptor = FetchDescriptor<Habit>(sortBy: [SortDescriptor(\.createdAt)])
        let habits = (try? context.fetch(descriptor)) ?? []

        let items = habits.map { habit in
            WidgetSnapshot.Item(
                id: habit.uuid,
                name: habit.name,
                symbolName: habit.symbolName,
                colorHex: habit.colorHex,
                isDoneToday: habit.isCompletedToday
            )
        }

        SharedStore.save(WidgetSnapshot(generatedAt: .now, items: items))
        WidgetCenter.shared.reloadAllTimelines()
    }
}