137 lines
3.8 KiB
Swift
137 lines
3.8 KiB
Swift
//
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// ProviderPanelModifier.swift
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// Passepartout
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//
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// Created by Davide De Rosa on 10/7/24.
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// Copyright (c) 2024 Davide De Rosa. All rights reserved.
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//
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// https://github.com/passepartoutvpn
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//
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// This file is part of Passepartout.
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//
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// Passepartout is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Passepartout is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Passepartout. If not, see <http://www.gnu.org/licenses/>.
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//
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import AppLibrary
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import PassepartoutKit
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import SwiftUI
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struct ProviderPanelModifier<Entity, ProviderContent>: ViewModifier where Entity: ProviderEntity, Entity.Configuration: ProviderConfigurationIdentifiable & Codable, ProviderContent: View {
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@EnvironmentObject
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private var providerManager: ProviderManager
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var apis: [APIMapper] = API.shared
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let isRequired: Bool
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@Binding
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var providerId: ProviderID?
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@Binding
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var selectedEntity: Entity?
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@ViewBuilder
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let providerContent: (ProviderID, Entity?) -> ProviderContent
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func body(content: Content) -> some View {
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providerPicker
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.task {
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await refreshIndex()
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}
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if let providerId {
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providerContent(providerId, selectedEntity)
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} else if !isRequired {
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content
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}
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}
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}
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private extension ProviderPanelModifier {
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var supportedProviders: [ProviderMetadata] {
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providerManager.providers.filter {
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$0.supports(Entity.Configuration.self)
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}
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}
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var providerPicker: some View {
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let hasProviders = !supportedProviders.isEmpty
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return Picker(Strings.Global.provider, selection: $providerId) {
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if hasProviders {
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Text(Strings.Global.none)
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.tag(nil as ProviderID?)
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ForEach(supportedProviders, id: \.id) {
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Text($0.description)
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.tag($0.id as ProviderID?)
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}
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} else {
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Text(" ") // enforce constant picker height on iOS
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.tag(providerId) // tag always exists
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}
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}
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.onChange(of: providerId) { _ in
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selectedEntity = nil
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}
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.disabled(!hasProviders)
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}
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}
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private extension ProviderPanelModifier {
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// FIXME: #707, fetch bundled providers on launch
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// FIXME: #704, rate-limit fetch
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func refreshIndex() async {
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do {
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try await providerManager.fetchIndex(from: apis)
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} catch {
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pp_log(.app, .error, "Unable to fetch index: \(error)")
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}
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}
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}
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private extension ProviderID {
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var nilIfEmpty: ProviderID? {
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!rawValue.isEmpty ? self : nil
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}
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}
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// MARK: - Preview
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#Preview {
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@State
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var providerId: ProviderID? = .hideme
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@State
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var vpnEntity: VPNEntity<OpenVPN.Configuration>?
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return List {
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EmptyView()
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.modifier(ProviderPanelModifier(
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apis: [API.bundled],
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isRequired: false,
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providerId: $providerId,
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selectedEntity: $vpnEntity,
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providerContent: { _, entity in
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HStack {
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Text("Server")
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Spacer()
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Text(entity?.server.serverId ?? "None")
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}
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}
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))
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}
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.withMockEnvironment()
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}
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