//
//  SaveAndRefreshMenu.swift
//  Todos
//
//  Created by Sam Jaffe on 3/9/26.
//

import SwiftUI
import SwiftData
internal import Combine

struct RotateContentMenu: View {
  @Environment(\.modelContext) private var modelContext
  @AppStorage(UserDefaultsKeys.WeekStart) private var weekStart = Date()
  let inPreview = ProcessInfo.processInfo.environment["XCODE_RUNNING_FOR_PREVIEWS"] == "1"

  @Query private var items: [Project]
  @Binding var rotate: RotateTracking

  var body: some View {
    Button("Save and Cleanup", systemImage: "arrow.3.trianglepath") {
      rotate.summary = RotateController().summarize(items)
      rotate.manuallyInvoked = true
    }
    .keyboardShortcut("R", modifiers: [.command, .shift])
//    .disabled(!shouldAutosave)
    .onAppear(perform: tryAutosave)
    .help("Will save as \(ymd(weekStart)) after \(ymd(nextSunday(weekStart)))")
  }

  func tryAutosave() {
    if shouldAutosave && !inPreview {
      RotateController().saveAndRotate(items, &weekStart, &rotate)
      rotate.hasTriggeredAutosave = true
    }
  }

  func nextSunday(_ date: Date) -> Date {
    Calendar.current.nextDate(after: date,
                              matching: DateComponents(weekday: 1),
                              matchingPolicy: .nextTime)!
  }

  func ymd(_ date: Date) -> String { RotateController.ymd(date) }

  var shouldAutosave: Bool {
    ymd(Date()) > ymd(nextSunday(weekStart))
  }
}

#Preview {
  @Previewable @State var rotate = RotateTracking()
  RotateContentMenu(rotate: $rotate)
}