search-sample.swift

//
//  ContentView.swift
//  search-test
//
//  Created by Alex on 5/15/24.
//

import SwiftUI
import SwiftUI

struct Name: Identifiable {
    let id = UUID()
    let firstName: String
}

struct ContentView: View {
    @State private var searchText = ""

    let names: [Name] = [
        Name(firstName: "Alice"),
        Name(firstName: "Bob"),
        Name(firstName: "Charlie"),
        Name(firstName: "David"),
        Name(firstName: "Edward"),
        Name(firstName: "Fiona"),
        Name(firstName: "George"),
        Name(firstName: "Hannah"),
        Name(firstName: "Irene"),
        Name(firstName: "Jack"),
        Name(firstName: "Karen"),
        Name(firstName: "Larry"),
        Name(firstName: "Mona"),
        Name(firstName: "Nancy"),
        Name(firstName: "Oscar"),
        Name(firstName: "Paul"),
        Name(firstName: "Quincy"),
        Name(firstName: "Rachel"),
        Name(firstName: "Sam"),
        Name(firstName: "Tina"),
        Name(firstName: "Uma"),
        Name(firstName: "Victor"),
        Name(firstName: "Wendy"),
        Name(firstName: "Xander"),
        Name(firstName: "Yvonne"),
        Name(firstName: "Zack")
    ]

    var filteredNames: [Name] {
        if searchText.isEmpty {
            return names
        } else {
            return names.filter { $0.firstName.lowercased().contains(searchText.lowercased()) }
        }
    }

    var groupedNames: [String: [Name]] {
        Dictionary(grouping: filteredNames) { name in
            String(name.firstName.prefix(1))
        }
    }

    var body: some View {
        NavigationView {
            List {
                ForEach(groupedNames.keys.sorted(), id: \.self) { key in
                    Section(header: Text(key)) {
                        ForEach(groupedNames[key] ?? []) { name in
                            Text(name.firstName)
                        }
                    }
                }
            }
            .listStyle(.grouped)
            .navigationBarTitle("Names")
            .searchable(text: $searchText)
        }
    }
}

#Preview {
    ContentView()
}