// generated by bun run generate from the SwiftUI SDK and codegen/catalog.ts.
// edit the generator or catalog, then regenerate.
import SwiftUI
import UIKit

private final class MultiDatePickerModel: ObservableObject {
  @Published var controlled = OneNativeControlled<String>("[]")
  @Published var label: String = ""
  @Published var disabled: Bool = false
  @Published var minimumDate: Double = -62135769600000
  @Published var maximumDate: Double = 64092211200000
  @Published var accessibility = OneNativeAccessibility()
  @Published var swiftStyle = OneNativeStyle()
  var active = false
  var onSDKEvent: ((String, String) -> Void)?
  func emitSDKEvent(_ name: String, _ value: String) { if active { onSDKEvent?(name, value) } }

  var onChange: ((String, Int, Int) -> Void)?
  func change(_ value: String) {
    guard active, !disabled, controlled.value != value else { return }
    controlled.change(value)
    onChange?(value, controlled.eventCount, controlled.revision)
  }
}
@objcMembers public final class OneNativeMultiDatePickerView: UIView, OneNativeComposable {
  public var onSDKEvent: ((String, String) -> Void)?

  public var onChange: ((String, Int, Int) -> Void)?
  private var model = MultiDatePickerModel()
  public var onHeight: ((CGFloat) -> Void)?
  private var controller: OneNativeHostingController<OneNativeMeasuredStandalone<MultiDatePickerContent>>?
  public override init(frame: CGRect) { super.init(frame: frame) }
  required init?(coder: NSCoder) { fatalError("init(coder:) is unavailable") }
  public func configureAccessibility(_ label: String, hint: String, value: String, identifier: String) {
    let next = OneNativeAccessibility(label: label, hint: hint, value: value, identifier: identifier)
    if model.accessibility != next { model.accessibility = next }
  }
  public func configureStyle(_ style: [String: Any]) {
    let next = OneNativeStyle(dictionary: style)
    if model.swiftStyle != next {
      let previousRows = model.swiftStyle.sdkModifiers.filter { $0.first?.hasPrefix("listRow") == true }
      let nextRows = next.sdkModifiers.filter { $0.first?.hasPrefix("listRow") == true }
      model.swiftStyle = next
      if previousRows != nextRows { compositionParent?.refreshRow(for: self) }
    }
  }
  public func configure(_ value: String, acknowledgedEvent: Int, revision: Int, label: String, disabled: Bool, minimumDate: Double, maximumDate: Double) {
    if let next = model.controlled.applying(value, acknowledged: acknowledgedEvent, revision: revision) { model.controlled = next }
    if model.label != label { model.label = label }
    if model.disabled != disabled { model.disabled = disabled }
    if model.minimumDate != minimumDate { model.minimumDate = minimumDate }
    if model.maximumDate != maximumDate { model.maximumDate = maximumDate }
  }


  private weak var compositionParent: OneNativeCompositionParent?
  public func compositionContent() -> AnyView { AnyView(MultiDatePickerContent(model: model)) }
  // composed, activation follows the parent: a subtree mounted before root attachment
  // stays silent until the root attaches.
  public func composeInto(_ parent: OneNativeCompositionParent) {
    controller?.detach(); controller = nil
    compositionParent = parent
    bindCallbacks()
    model.active = parent.compositionActive
  }
  public func decompose() { compositionParent = nil; model.active = false }
  public func propagateActive(_ active: Bool) { model.active = active }
  public override func didMoveToWindow() { super.didMoveToWindow(); updateHost() }
  public override func layoutSubviews() { super.layoutSubviews(); updateHost() }
  private func bindCallbacks() {
    model.onSDKEvent = { [weak self] name, value in self?.onSDKEvent?(name, value) }

    model.onChange = { [weak self] value, count, revision in self?.onChange?(value, count, revision) }
  }
  private func updateHost() {
    guard compositionParent == nil else { return }
    model.active = false
    guard window != nil else { controller?.detach(); return }
    if controller == nil {
      bindCallbacks()
      controller = OneNativeHostingController(rootView: OneNativeMeasuredStandalone(content: MultiDatePickerContent(model: model), onHeight: { [weak self] height in self?.onHeight?(height) }))
    }
    controller?.attach(to: self)
    model.active = controller?.isAttached == true
  }
  public func reset() {
    compositionParent = nil
    model.active = false; model.onSDKEvent = nil; model.onChange = nil
    controller?.detach(); controller = nil; model = MultiDatePickerModel()
  }
}
private struct MultiDatePickerContent: View {
  @ObservedObject var model: MultiDatePickerModel
  var body: some View {
    MultiDatePicker(LocalizedStringKey(model.label), selection: Binding(
        get: { oneNativeDecodeDates(model.controlled.value) },
        set: { value in model.change(oneNativeEncodeDates(value)) }
      ), in: Date(timeIntervalSince1970: model.minimumDate / 1000)..<Date(timeIntervalSince1970: model.maximumDate / 1000))
      .disabled(model.disabled)
      .oneNativeAccessibility(model.accessibility)
      .oneNativeStyle(model.swiftStyle, emit: model.emitSDKEvent)
  }
}
private func oneNativeDecodeDates(_ json: String) -> Set<DateComponents> {
  guard let data = json.data(using: .utf8),
    let times = try? JSONDecoder().decode([Double].self, from: data)
  else { preconditionFailure("MultiDatePicker selection is not a JSON array of epoch milliseconds") }
  let calendar = Calendar.current
  return Set(times.map { calendar.dateComponents([.calendar, .era, .year, .month, .day], from: Date(timeIntervalSince1970: $0 / 1000)) })
}

private func oneNativeEncodeDates(_ value: Set<DateComponents>) -> String {
  let calendar = Calendar.current
  let times = value.compactMap { components -> Double? in
    guard let date = calendar.date(from: components) else { return nil }
    return date.timeIntervalSince1970 * 1000
  }
  let data = try! JSONEncoder().encode(times.sorted())
  return String(data: data, encoding: .utf8)!
}