//
// Copyright 2022-2024 New Vector Ltd.
//
// SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
// Please see LICENSE files in the repository root for full details.
//

import SwiftUI

struct UserOtherSessionsToolbar: ToolbarContent {
    @Environment(\.theme) private var theme
    
    @Binding var isEditModeEnabled: Bool
    @Binding var filter: UserOtherSessionsFilter
    @Binding var isShowLocationEnabled: Bool
    let allItemsSelected: Bool
    let sessionCount: Int
    let showDeviceLogout: Bool
    let onToggleSelection: () -> Void
    let onSignOut: () -> Void
    
    var body: some ToolbarContent {
        navigationBarLeading()
        navigationBarTrailing()
    }
    
    private func navigationBarLeading() -> some ToolbarContent {
        ToolbarItemGroup(placement: .navigationBarLeading) {
            if isEditModeEnabled {
                Button {
                    onToggleSelection()
                } label: {
                    Text(allItemsSelected ? VectorL10n.deselectAll : VectorL10n.selectAll)
                        .foregroundColor(Color(ThemeService.shared().theme.tintColor))
                }
            }
        }
    }
    
    private func navigationBarTrailing() -> some ToolbarContent {
        ToolbarItemGroup(placement: .navigationBarTrailing) {
            if isEditModeEnabled {
                cancelButton()
            } else {
                filterMenuButton()
                    .offset(x: 12)
                optionsMenu()
            }
        }
    }
    
    private func cancelButton() -> some View {
        Button {
            isEditModeEnabled = false
        } label: {
            Text(VectorL10n.cancel)
                .foregroundColor(Color(ThemeService.shared().theme.tintColor))
        }
        .font(theme.fonts.bodySB)
    }
    
    private func filterMenuButton() -> some View {
        Button { } label: {
            Menu {
                Picker("", selection: $filter) {
                    ForEach(UserOtherSessionsFilter.allCases) { filter in
                        Text(filter.menuLocalizedName).tag(filter)
                    }
                }
                .labelsHidden()
            } label: {
                Image(filter == .all ? Asset.Images.userOtherSessionsFilter.name : Asset.Images.userOtherSessionsFilterSelected.name)
                .foregroundColor(Color(ThemeService.shared().theme.tintColor))
            }
            .accessibilityLabel(VectorL10n.userOtherSessionFilter)
        }
    }
    
    private func optionsMenu() -> some View {
        Button { } label: {
            Menu {
                if showDeviceLogout { // As you can only sign out the selected sessions, we don't allow selection when you're unable to sign out devices.
                    Button {
                        isEditModeEnabled = true
                    } label: {
                        Label(VectorL10n.userOtherSessionMenuSelectSessions, systemImage: "checkmark.circle")
                    }
                    .disabled(sessionCount == 0)
                }
                
                if BWIBuildSettings.shared.deviceManagerShowIPAddress {
                    Button {
                        isShowLocationEnabled.toggle()
                    } label: {
                        Label(showLocationInfo: isShowLocationEnabled)
                    }
                }
                
                if sessionCount > 0, showDeviceLogout {
                    DestructiveButton {
                        onSignOut()
                    } label: {
                        Label(VectorL10n.userOtherSessionMenuSignOutSessions(String(sessionCount)), systemImage: "rectangle.portrait.and.arrow.forward.fill")
                    }
                }
            } label: {
                Image(systemName: "ellipsis.circle")
                    .foregroundColor(Color(ThemeService.shared().theme.tintColor))
                    .padding(.horizontal, 4)
                    .padding(.vertical, 12)
            }
        }
        .accessibilityIdentifier("More")
    }
}