TodosApp/Todos/View/Menu/ImportMenu.swift

//
//  ImportMenu.swift
//  Todos
//
//  Created by Sam Jaffe on 3/1/26.
//

import SwiftUI
import SwiftData
import UniformTypeIdentifiers

struct ImportMenu: View {
  @Environment(\.modelContext) private var modelContext
  @AppStorage(UserDefaultsKeys.Category) var allGroups = CodableArray<Category>()
  @AppStorage(UserDefaultsKeys.UrlHints) var allHints = CodableArray<URLHint>()

  @State private var showingExporter = false

  var body: some View {
    Button("Import", systemImage: "square.and.arrow.down.on.square") {
      showingExporter = true
    }
    .keyboardShortcut("I", modifiers: [.command, .shift])
    .fileImporter(isPresented: $showingExporter, allowedContentTypes: [.json]) { result in
      switch result {
      case .success(let url):

        guard let data = try? Data(contentsOf: url),
              let transfer = try? JSONDecoder().decode(Transfer.self, from: data)
        else {
          return
        }

        do {
          try modelContext.container.erase()

          transfer.projects.forEach(modelContext.insert)
          allGroups = transfer.categories
          allHints = transfer.hints
        } catch {
          print(error.localizedDescription)
        }
      case .failure(let error):
        print(error.localizedDescription)
      }
    }
  }
}

#Preview {
  ImportMenu()
}