//
//  AddKeyButton.swift
//  OTP
//
//  Created by Shadowfacts on 8/25/21.
//

import SwiftUI

struct AddKeyButton: View {
    let folderID: UUID?
    let canAddFolder: Bool
    @ObservedObject private var store: KeyStore = .shared
    @State private var isPresentingScanner = false
    @State private var isPresentingScanFailedAlert = false
    @State private var isPresentingAddURLSheet = false
    @State private var isPresentingManualAddFormSheet = false
    
    init(folderID: UUID?, canAddFolder: Bool) {
        self.folderID = folderID
        self.canAddFolder = canAddFolder
    }
    
    var body: some View {
        Menu {
            Section {
                Button {
                    isPresentingScanner = true
                } label: {
                    Label("Scan QR", systemImage: "qrcode.viewfinder")
                }
                Button {
                    isPresentingAddURLSheet = true
                } label: {
                    Label("From URL", systemImage: "link")
                }
                Button {
                    isPresentingManualAddFormSheet = true
                } label: {
                    Label("Enter Manually", systemImage: "textbox")
                }
            }
            
            if canAddFolder {
                Section {
                    Button {
                        store.addFolder()
                    } label: {
                        Label("New Folder", systemImage: "folder.badge.plus")
                    }
                }
            }
        } label: {
            Label("Add Key", systemImage: "plus.circle")
        }
        .accessibilityLabel("Add Key")
        .sheet(isPresented: $isPresentingScanner, content: self.scannerSheet)
        .sheet(isPresented: $isPresentingManualAddFormSheet, content: self.manualAddFormSheet)
        .sheet(isPresented: $isPresentingAddURLSheet, content: self.addURLSheet)
    }
    
    private func scannerSheet() -> some View {
        AddQRView() { (action) in
            self.isPresentingScanner = false
            switch action {
            case .cancel:
                break
            case .save(let key):
                store.addKey(key, folderID: folderID)
            }
        }
    }
    
    private func addURLSheet() -> some View {
        NavigationView {
            AddURLForm { (action) in
                self.isPresentingAddURLSheet = false
                switch action {
                case .cancel:
                    break
                case .save(let key):
                    store.addKey(key, folderID: folderID)
                }
            }
        }
    }
    
    private func manualAddFormSheet() -> some View {
        NavigationView {
            EditKeyForm(editingKey: nil, focusOnAppear: true) { (action) in
                self.isPresentingManualAddFormSheet = false
                switch action {
                case .cancel:
                    break
                case .save(let key):
                    store.addKey(key, folderID: folderID)
                }
            }
            .navigationTitle("Add Key")
        }
    }
    
}

struct AddKeyButton_Previews: PreviewProvider {
    static var previews: some View {
        AddKeyButton(folderID: nil, canAddFolder: true)
    }
}