ReadMainView.swift

//
//  ReadMainView.swift
//  enzevalos_iphone
//
//  This program is free software: you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  (at your option) any later version.
//
//  This program is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with this program.  If not, see <https://www.gnu.org/licenses/>.

import SwiftUI

struct ReadMainView <M: DisplayMail>: View {
    
    public var mail: M
            
    var body: some View {
        TabView{
            ForEach(Tabs, id: \.id ){ tab in
                tab.content
                    .tabItem {
                        tab.image
                        Text(tab.description)
                }
            }
        }
    }
    
    //TODO: not use AnyView-workaround
    var Tabs:[Tab] {
        get {
            return [
                Tab(
                    image: Image(systemName: "shield"),
                    description: "security",
                    content:AnyView(SecurityBriefingView(mail: mail))
                ),
                Tab(
                    image: Image(systemName: "person.fill"),
                    description: "sender",
                    content: AnyView(SenderViewMain<M>(mail: mail))
                ),
                Tab(
                    image: Image(systemName: "text.bubble.fill"),
                    description: "message",
                    content: AnyView(MessageViewMain<M>(mail: mail))
                ),
                Tab(
                    image: Image(systemName: "rectangle.and.paperclip"),
                    description: "attachments",
                    content: AnyView(AttachmentsViewMain(attachments: mail.displayAttachments, dlAll: true))
                )                
            ]
        }
    }
}


struct Tab {
    let id = UUID()
    
    var image       : Image         = Image(systemName: "tag.fill")
    var description : String        = "---"
    var content     : AnyView       = AnyView(Text("Still in development"))
}


#if DEBUG
struct Layout_Previews: PreviewProvider {
    static let simulator = Simulators<ReadMainView<ProxyMail>>()
    static let deviceNames: [String] = [
        "iPhone SE",
        "iPhone 11 Pro Max"
    ]
    
  static var previews: some View {
        simulator.previews(view: ReadMainView(mail: ProxyData.SecureMail))
   }
}
#endif