Movies list

iOSCrew4_week2_day1_FirstSession.swift

import SwiftUI

struct MovieRecord: Codable {
  let name: String
  let starCount: Int
  let date: Date
}

struct ContentView: View {
  @AppStorage("movies_key") var savedMovies: String = "[]"

  //  @State var movies = [
  //    MovieRecord(name: "Avatar", starCount: 2, date: Date()),
  //    MovieRecord(name: "Titanic", starCount: 5, date: Date()),
  //    MovieRecord(name: "Terminator", starCount: 4, date: Date())
  //  ]

  @State var isSheetOpened = false

  var body: some View {
    let movies = Binding<[MovieRecord]>(
      get: { try! JSONDecoder().decode([MovieRecord].self, from: savedMovies.data(using: .utf8)!) },
      set: { records in savedMovies = String(data: try! JSONEncoder().encode(records), encoding: .utf8)! }
    )

    NavigationView {
      List {
        ForEach(movies.wrappedValue, id: \.name) { movie in
          HStack {
            VStack(alignment: .leading) {
              Text(movie.name)

              HStack {
                ForEach(1..<6) { i in
                  Image(systemName: i <= movie.starCount ? "star.fill" : "star")
                    .foregroundColor(.yellow)
                }
              }
            }
            Spacer()
            Text(DateFormatter.normal.string(from: movie.date))
              .scaledToFill()
          }
          .padding(8)
        }
        .onDelete { indexSet in
          movies.wrappedValue.remove(atOffsets: indexSet)
        }
      }
      .sheet(isPresented: $isSheetOpened, content: {
        SheetView { name in
          movies.wrappedValue.append(MovieRecord(name: name, starCount: 5, date: Date()))
          isSheetOpened = false
        }
      })
      .listStyle(InsetGroupedListStyle())
      .navigationBarTitle(Text("Movies"))
      .navigationBarItems(
        trailing: Button {
          isSheetOpened = true
        } label: {
          Image(systemName: "plus")
        }
      )
    }
  }
}

struct SheetView: View {

  @State private var name: String = ""
  @State var completion: (String) -> Void

  var body: some View {
    NavigationView {
      TextField("Enter movie name", text: $name)
        .padding()
        .navigationBarItems(
          trailing: Button {
            completion(name)
          } label: {
            Text("Done")
              .bold()
          }
        )
    }
  }
}

extension DateFormatter {
  static var normal: DateFormatter {
    let formatter = DateFormatter()
    formatter.dateFormat = "yyyy-MM-dd"
    return formatter
  }
}

struct ContentView_Previews: PreviewProvider {
  static var previews: some View {
    ContentView()
  }
}