398 lines
12 KiB
Swift
398 lines
12 KiB
Swift
//
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// InstanceFeatures.swift
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// Tusker
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//
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// Created by Shadowfacts on 1/23/22.
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// Copyright © 2022 Shadowfacts. All rights reserved.
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//
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import Foundation
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import Combine
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import Pachyderm
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public final class InstanceFeatures: ObservableObject {
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private static let pleromaVersionRegex = try! NSRegularExpression(pattern: "\\(compatible; (pleroma|akkoma) (.*)\\)", options: .caseInsensitive)
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private let _featuresUpdated = PassthroughSubject<Void, Never>()
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public var featuresUpdated: some Publisher<Void, Never> { _featuresUpdated }
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@Published @_spi(InstanceType) public private(set) var instanceType: InstanceType = .mastodon(.vanilla, nil)
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@Published public private(set) var maxStatusChars = 500
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@Published public private(set) var charsReservedPerURL = 23
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@Published public private(set) var maxPollOptionChars: Int?
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@Published public private(set) var maxPollOptionsCount: Int?
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@Published public private(set) var mediaAttachmentsConfiguration: InstanceV1.MediaAttachmentsConfiguration?
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@Published public private(set) var translation: Bool = false
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public var localOnlyPosts: Bool {
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switch instanceType {
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case .mastodon(.hometown(_), _), .mastodon(.glitch, _):
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return true
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case .pleroma(.akkoma(_)):
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return true
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default:
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return false
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}
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}
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/// Instance types that use a separate visibility to indicate local-only posts.
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public var localOnlyPostsVisibility: Bool {
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if case .pleroma(.akkoma(_)) = instanceType {
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return true
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} else {
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return false
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}
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}
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public var mastodonAttachmentRestrictions: Bool {
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instanceType.isMastodon
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}
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public var pollsAndAttachments: Bool {
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instanceType.isPleroma
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}
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public var boostToOriginalAudience: Bool {
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instanceType.isPleroma || instanceType.isMastodon
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}
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public var profilePinnedStatuses: Bool {
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switch instanceType {
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case .pixelfed:
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return false
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default:
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return true
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}
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}
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public var trends: Bool {
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instanceType.isMastodon
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}
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public var profileSuggestions: Bool {
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instanceType.isMastodon && hasMastodonVersion(3, 4, 0)
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}
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public var trendingStatusesAndLinks: Bool {
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instanceType.isMastodon && hasMastodonVersion(3, 5, 0)
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}
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public var reblogVisibility: Bool {
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(instanceType.isMastodon && hasMastodonVersion(2, 8, 0))
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|| (instanceType.isPleroma && hasPleromaVersion(2, 0, 0))
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}
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public var probablySupportsMarkdown: Bool {
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switch instanceType {
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case .pleroma(_), .mastodon(.glitch, _), .mastodon(.hometown(_), _), .firefish(_):
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return true
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default:
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return false
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}
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}
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public var needsLocalOnlyEmojiHack: Bool {
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if case .mastodon(.glitch, _) = instanceType {
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return true
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} else {
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return false
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}
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}
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public var needsWideColorGamutHack: Bool {
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if case .mastodon(_, let version) = instanceType {
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return version < Version(4, 0, 0)
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} else {
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return true
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}
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}
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public var canFollowHashtags: Bool {
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if case .mastodon(_, let version) = instanceType {
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return version >= Version(4, 0, 0)
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} else if case .pleroma(.akkoma(let version)) = instanceType {
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return version >= Version(3, 4, 0)
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} else {
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return false
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}
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}
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public var filtersV2: Bool {
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hasMastodonVersion(4, 0, 0)
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}
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public var notificationsAllowedTypes: Bool {
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hasMastodonVersion(3, 5, 0)
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}
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public var pollVotersCount: Bool {
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instanceType.isMastodon
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}
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public var createStatusWithLanguage: Bool {
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instanceType.isMastodon || instanceType.isPleroma(.akkoma(nil))
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}
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public var editStatuses: Bool {
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switch instanceType {
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case .mastodon(_, let v) where v >= Version(3, 5, 0):
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return true
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case .pleroma(.vanilla(let v)) where v >= Version(2, 5, 0):
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return true
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case .pleroma(.akkoma(_)):
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return true
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default:
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return false
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}
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}
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public var statusEditNotifications: Bool {
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// pleroma doesn't seem to support 'update' type notifications, even though it supports edits
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hasMastodonVersion(3, 5, 0)
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}
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public var statusNotifications: Bool {
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// pleroma doesn't support notifications for new posts from an account
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hasMastodonVersion(3, 3, 0)
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}
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public var needsEditAttachmentsInSeparateRequest: Bool {
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instanceType.isPleroma
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}
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public var composeDirectStatuses: Bool {
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if case .pixelfed = instanceType {
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return false
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} else {
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return true
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}
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}
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public var searchOperators: Bool {
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hasMastodonVersion(4, 2, 0)
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}
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public var hasServerPreferences: Bool {
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hasMastodonVersion(2, 8, 0)
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}
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public var listRepliesPolicy: Bool {
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hasMastodonVersion(3, 3, 0)
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}
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public var exclusiveLists: Bool {
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hasMastodonVersion(4, 2, 0) || instanceType.isMastodon(.hometown(nil))
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}
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public var pushNotificationTypeStatus: Bool {
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hasMastodonVersion(3, 3, 0)
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}
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public var pushNotificationTypeFollowRequest: Bool {
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hasMastodonVersion(3, 1, 0)
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}
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public var pushNotificationTypeUpdate: Bool {
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hasMastodonVersion(3, 5, 0)
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}
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public var pushNotificationPolicy: Bool {
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hasMastodonVersion(3, 5, 0)
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}
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public var pushNotificationPolicyMissingFromResponse: Bool {
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switch instanceType {
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case .mastodon(_, let version):
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return version >= Version(3, 5, 0) && version < Version(4, 1, 0)
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default:
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return false
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}
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}
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public var instanceAnnouncements: Bool {
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hasMastodonVersion(3, 1, 0)
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}
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public var emojiReactionNotifications: Bool {
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instanceType.isPleroma
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}
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public var muteNotifications: Bool {
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!instanceType.isPixelfed
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}
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public var blockDomains: Bool {
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!instanceType.isPixelfed
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}
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public var hideReblogs: Bool {
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!instanceType.isPixelfed
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}
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public init() {
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}
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public func update(instance: InstanceInfo, nodeInfo: NodeInfo?) {
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let ver = instance.version.lowercased()
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// check glitch first b/c it still reports "mastodon" as the software in nodeinfo
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if ver.contains("glitch") {
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instanceType = .mastodon(.glitch, Version(string: ver))
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} else if nodeInfo?.software.name == "mastodon" {
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instanceType = .mastodon(.vanilla, Version(string: ver))
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} else if nodeInfo?.software.name == "hometown" {
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var mastoVersion: Version?
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var hometownVersion: Version?
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let parts = ver.split(separator: "+")
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if parts.count == 2,
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let first = Version(string: String(parts[0])) {
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if first > Version(1, 0, 8) {
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// like 3.5.5+hometown-1.0.9
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mastoVersion = first
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if parts[1].starts(with: "hometown-") {
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hometownVersion = Version(string: String(parts[1][parts[1].index(parts[1].startIndex, offsetBy: "hometown-".count + 1)...]))
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}
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} else {
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// like "1.0.6+3.5.2"
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hometownVersion = first
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mastoVersion = Version(string: String(parts[1]))
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}
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} else {
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mastoVersion = Version(string: ver)
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}
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instanceType = .mastodon(.hometown(hometownVersion), mastoVersion)
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} else if let match = InstanceFeatures.pleromaVersionRegex.firstMatch(in: ver, range: NSRange(location: 0, length: ver.utf16.count)) {
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var pleromaVersion: Version?
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let type = (ver as NSString).substring(with: match.range(at: 1))
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pleromaVersion = Version(string: (ver as NSString).substring(with: match.range(at: 2)))
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if type == "akkoma" {
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instanceType = .pleroma(.akkoma(pleromaVersion))
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} else {
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instanceType = .pleroma(.vanilla(pleromaVersion))
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}
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} else if ver.contains("pixelfed") {
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instanceType = .pixelfed
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} else if nodeInfo?.software.name == "gotosocial" {
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instanceType = .gotosocial
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} else if ver.contains("firefish") || ver.contains("iceshrimp") || ver.contains("calckey") {
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instanceType = .firefish(nodeInfo?.software.version)
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} else {
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instanceType = .mastodon(.vanilla, Version(string: ver))
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}
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maxStatusChars = instance.maxStatusCharacters ?? 500
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charsReservedPerURL = instance.configuration?.statuses.charactersReservedPerURL ?? 23 // default Mastodon link length
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if let pollsConfig = instance.pollsConfiguration {
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maxPollOptionChars = pollsConfig.maxCharactersPerOption
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maxPollOptionsCount = pollsConfig.maxOptions
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}
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mediaAttachmentsConfiguration = instance.configuration?.mediaAttachments
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translation = instance.translation
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_featuresUpdated.send()
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}
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public func hasMastodonVersion(_ major: Int, _ minor: Int, _ patch: Int) -> Bool {
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if case .mastodon(_, let version) = instanceType {
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return version >= Version(major, minor, patch)
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} else {
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return false
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}
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}
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func hasPleromaVersion(_ major: Int, _ minor: Int, _ patch: Int) -> Bool {
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switch instanceType {
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case .pleroma(.vanilla(let version)), .pleroma(.akkoma(let version)):
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return version >= Version(major, minor, patch)
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default:
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return false
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}
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}
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}
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extension InstanceFeatures {
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@_spi(InstanceType) public enum InstanceType {
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case mastodon(MastodonType, Version?)
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case pleroma(PleromaType)
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case pixelfed
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case gotosocial
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case firefish(String?)
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var isMastodon: Bool {
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if case .mastodon(_, _) = self {
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return true
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} else {
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return false
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}
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}
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func isMastodon(_ subtype: MastodonType) -> Bool {
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if case .mastodon(let t, _) = self,
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t.equalsIgnoreVersion(subtype) {
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return true
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} else {
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return false
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}
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}
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var isPleroma: Bool {
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if case .pleroma(_) = self {
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return true
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} else {
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return false
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}
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}
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func isPleroma(_ subtype: PleromaType) -> Bool {
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if case .pleroma(let t) = self,
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t.equalsIgnoreVersion(subtype) {
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return true
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} else {
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return false
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}
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}
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var isPixelfed: Bool {
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if case .pixelfed = self {
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return true
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} else {
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return false
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}
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}
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}
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@_spi(InstanceType) public enum MastodonType {
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case vanilla
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case hometown(Version?)
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case glitch
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func equalsIgnoreVersion(_ other: MastodonType) -> Bool {
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switch (self, other) {
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case (.vanilla, .vanilla):
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return true
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case (.hometown(_), .hometown(_)):
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return true
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case (.glitch, .glitch):
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return true
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default:
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return false
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}
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}
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}
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@_spi(InstanceType) public enum PleromaType {
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case vanilla(Version?)
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case akkoma(Version?)
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func equalsIgnoreVersion(_ other: PleromaType) -> Bool {
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switch (self, other) {
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case (.vanilla(_), .vanilla(_)):
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return true
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case (.akkoma(_), .akkoma(_)):
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return true
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default:
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return false
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}
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}
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}
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}
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