TodosApp/Todos/View/SettingsView.swift

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

import SwiftUI

struct SettingsView: View {
  @EnvironmentObject var allHints: URLHintArray
  @State var active = URLHint()
  
  var body: some View {
    TabView {
      Tab("URL Hints", systemImage: "link") {
        Text("Custom rules to expand a tag into a URL")
        Table(of: Binding<URLHint>.self) {
          TableColumn("Tag Prefix") { hint in
            TextField("", text: hint.prefix)
              .onSubmit(addHint)
          }
          TableColumn("URL Expansion") { hint in
            TextField("", text: hint.replacement)
              .onSubmit(addHint)
          }
          TableColumn("") { hint in
            if hint.id != active.id {
              Button() {
                allHints.array.removeAll(where: { $0.id == hint.id })
                UserDefaults.standard.set(allHints.serial,
                                          forKey: UserDefaultsKeys.UrlHints)
              } label: {
                Label("", systemImage: "trash")
              }
            }
          }.width(max: 20)
        } rows: {
          ForEach($allHints.array) { hint in
            TableRow(hint)
          }
          TableRow($active)
        }
      }
    }
  }
  
  private func addHint() {
    if active.valid {
      allHints.array.append(active)
      UserDefaults.standard.set(allHints.serial,
                                forKey: UserDefaultsKeys.UrlHints)
      active = URLHint()
    }
  }
}

#Preview {
  SettingsView()
    .environmentObject(URLHintArray())
}