09_list-sample-using-caseIterable-protocol.swift

import SwiftUI

//
//  ContentView.swift
//  ListSampleUsingCaseIterable
//
//  Created by 能登 要 on 2021/04/14.
//

import SwiftUI

enum AnimalStatus: String {
    case stable
    case angry
    case hungry
}

struct Animal {
    var id: String
    var name: String
    var status: AnimalStatus
    init(name: String, status: AnimalStatus) {
        id = name
        self.name = name
        self.status = status
    }
}

enum Animals: String, CaseIterable, CustomStringConvertible {
    case dogs
    case elephants
    var description: String {
        return self.rawValue
    }
    var items: [Animal] {
        switch self {
        case .dogs:
            return [
                Animal(name: "Colin", status: .stable),
                Animal(name: "Irwin", status: .stable),
            ]
        case .elephants:
            return [
                Animal(name: "Ahmed", status: .stable),
                Animal(name: "Nasser", status: .stable),
            ]
        }
    }
}

struct ContentView: View {
    var body: some View {
        List {
            ForEach(Animals.allCases, id: \.self) { animal in
                Section(header: Text(String(describing: animal)) ) {
                    ForEach(animal.items, id: \.name) { item in
                        Text(String(describing: item.name))
                    }
                }
                .textCase(.none)
            }
        }.listStyle(PlainListStyle())
    }
}


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