/**
 * TrackerMap
 * Copyright (C) 2021-2022  Iván Ávalos <avalos@disroot.org>, Henoch Ojeda <imhenoch@protonmail.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
import SwiftUI
import shared

struct DetailsView: View {
    @ObservedObject var detailsViewModel = DetailsViewModel()
    
    @Binding var isPresented: Bool
    @State var action: DeviceRow.Action
    var id: Int32?
    
    init(isPresented: Binding<Bool>, action: DeviceRow.Action, forId id: Int32?) {
        self._isPresented = isPresented
        self.action = action
        self.id = id
        if let id = id {
            self.detailsViewModel.fetchUnit(id: id)
        }
    }
    
    var body: some View {
        NavigationView {
            VStack {
                if id != nil {
                    if let unit = detailsViewModel.unit {
                        switch action {
                        case .details:
                            UnitInformationView(unit: unit)
                        case .reports:
                            UnitReportsView(unit: unit)
                        case .commands:
                            UnitCommandsView(unit: unit)
                        }
                    } else {
                        LoadingView()
                    }
                }
            }
            .navigationBarTitleView(
                Picker(selection: $action) {
                    Text("details").tag(DeviceRow.Action.details)
                    Text("reports").tag(DeviceRow.Action.reports)
                    Text("commands").tag(DeviceRow.Action.commands)
                } label: {
                    EmptyView()
                }.pickerStyle(SegmentedPickerStyle())
            )
            .navigationTitle(detailsViewModel.unit?.device.name ?? NSLocalizedString("loading", comment: ""))
            .navigationBarTitleDisplayMode(.large)
            .toolbar {
                ToolbarItem(placement: .navigationBarLeading) {
                    if let category = detailsViewModel.unit?.device.category {
                        let type = Marker.companion
                            .categoryToMarkerType(category: category)
                        Image(MarkerTransformations.markerTypeToImageName(markerType: type))
                    } else {
                        EmptyView()
                    }
                }
                ToolbarItem(placement: .navigationBarTrailing) {
                    Button {
                        isPresented = false
                    } label: {
                        Text("done").bold()
                    }
                }
            }
        }
    }
}