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yattee/Model/Applications/PeerTubeAPI.swift
2023-02-28 21:04:42 +01:00

594 lines
21 KiB
Swift

import Alamofire
import AVKit
import Defaults
import Foundation
import Siesta
import SwiftyJSON
final class PeerTubeAPI: Service, ObservableObject, VideosAPI {
static let basePath = "/api/v1"
@Published var account: Account!
@Published var validInstance = true
var signedIn: Bool {
guard let account else { return false }
return !account.anonymous && !(account.token?.isEmpty ?? true)
}
static func withAnonymousAccountForInstanceURL(_ url: URL) -> PeerTubeAPI {
.init(account: Instance(app: .peerTube, apiURLString: url.absoluteString).anonymousAccount)
}
init(account: Account? = nil) {
super.init()
guard !account.isNil else {
self.account = .init(name: "Empty")
return
}
setAccount(account!)
}
func setAccount(_ account: Account) {
self.account = account
validInstance = account.anonymous
configure()
if !account.anonymous {
validate()
}
}
func validate() {
validateInstance()
validateSID()
}
func validateInstance() {
guard !validInstance else {
return
}
home?
.load()
.onSuccess { _ in
self.validInstance = true
}
.onFailure { _ in
self.validInstance = false
}
}
func validateSID() {
guard signedIn, !(account.token?.isEmpty ?? true) else {
return
}
feed(1)?
.load()
.onFailure { _ in
self.updateToken(force: true)
}
}
func configure() {
invalidateConfiguration()
configure {
if let cookie = self.cookieHeader {
$0.headers["Cookie"] = cookie
}
$0.pipeline[.parsing].add(SwiftyJSONTransformer, contentTypes: ["*/json"])
}
configure("**", requestMethods: [.post]) {
$0.pipeline[.parsing].removeTransformers()
}
configureTransformer(pathPattern("popular"), requestMethods: [.get]) { (content: Entity<JSON>) -> [Video] in
content.json.arrayValue.map(self.extractVideo)
}
configureTransformer(pathPattern("videos"), requestMethods: [.get]) { (content: Entity<JSON>) -> [Video] in
content.json.dictionaryValue["data"]?.arrayValue.map(self.extractVideo) ?? []
}
configureTransformer(pathPattern("search/videos"), requestMethods: [.get]) { (content: Entity<JSON>) -> SearchPage in
let results = content.json.dictionaryValue["data"]?.arrayValue.compactMap { json -> ContentItem in .init(video: self.extractVideo(from: json)) } ?? []
return SearchPage(results: results, last: results.isEmpty)
}
configureTransformer(pathPattern("search/suggestions"), requestMethods: [.get]) { (content: Entity<JSON>) -> [String] in
if let suggestions = content.json.dictionaryValue["suggestions"] {
return suggestions.arrayValue.map(String.init)
}
return []
}
configureTransformer(pathPattern("auth/playlists"), requestMethods: [.get]) { (content: Entity<JSON>) -> [Playlist] in
content.json.arrayValue.map(self.extractPlaylist)
}
configureTransformer(pathPattern("auth/playlists/*"), requestMethods: [.get]) { (content: Entity<JSON>) -> Playlist in
self.extractPlaylist(from: content.json)
}
configureTransformer(pathPattern("auth/playlists"), requestMethods: [.post, .patch]) { (content: Entity<Data>) -> Playlist in
self.extractPlaylist(from: JSON(parseJSON: String(data: content.content, encoding: .utf8)!))
}
configureTransformer(pathPattern("auth/feed"), requestMethods: [.get]) { (content: Entity<JSON>) -> [Video] in
if let feedVideos = content.json.dictionaryValue["videos"] {
return feedVideos.arrayValue.map(self.extractVideo)
}
return []
}
configureTransformer(pathPattern("auth/subscriptions"), requestMethods: [.get]) { (content: Entity<JSON>) -> [Channel] in
content.json.arrayValue.map(self.extractChannel)
}
configureTransformer(pathPattern("channels/*"), requestMethods: [.get]) { (content: Entity<JSON>) -> Channel in
self.extractChannel(from: content.json)
}
configureTransformer(pathPattern("channels/*/latest"), requestMethods: [.get]) { (content: Entity<JSON>) -> [Video] in
content.json.arrayValue.map(self.extractVideo)
}
configureTransformer(pathPattern("channels/*/playlists"), requestMethods: [.get]) { (content: Entity<JSON>) -> [ContentItem] in
let playlists = (content.json.dictionaryValue["playlists"]?.arrayValue ?? []).compactMap { self.extractChannelPlaylist(from: $0) }
return ContentItem.array(of: playlists)
}
configureTransformer(pathPattern("playlists/*"), requestMethods: [.get]) { (content: Entity<JSON>) -> ChannelPlaylist in
self.extractChannelPlaylist(from: content.json)
}
configureTransformer(pathPattern("videos/*"), requestMethods: [.get]) { (content: Entity<JSON>) -> Video in
self.extractVideo(from: content.json)
}
configureTransformer(pathPattern("comments/*")) { (content: Entity<JSON>) -> CommentsPage in
let details = content.json.dictionaryValue
let comments = details["comments"]?.arrayValue.compactMap { self.extractComment(from: $0) } ?? []
let nextPage = details["continuation"]?.string
let disabled = !details["error"].isNil
return CommentsPage(comments: comments, nextPage: nextPage, disabled: disabled)
}
updateToken()
}
func updateToken(force: Bool = false) {
let (username, password) = AccountsModel.getCredentials(account)
guard !account.anonymous,
(account.token?.isEmpty ?? true) || force
else {
return
}
guard let username,
let password,
!username.isEmpty,
!password.isEmpty
else {
NavigationModel.shared.presentAlert(
title: "Account Error",
message: "Remove and add your account again in Settings."
)
return
}
let presentTokenUpdateFailedAlert: (AFDataResponse<Data?>?, String?) -> Void = { response, message in
NavigationModel.shared.presentAlert(
title: "Account Error",
message: message ?? "\(response?.response?.statusCode ?? -1) - \(response?.error?.errorDescription ?? "unknown")\nIf this issue persists, try removing and adding your account again in Settings."
)
}
AF
.request(login.url, method: .post, parameters: ["email": username, "password": password], encoding: URLEncoding.default)
.redirect(using: .doNotFollow)
.response { response in
guard let headers = response.response?.headers,
let cookies = headers["Set-Cookie"]
else {
presentTokenUpdateFailedAlert(response, nil)
return
}
let sidRegex = #"SID=(?<sid>[^;]*);"#
guard let sidRegex = try? NSRegularExpression(pattern: sidRegex),
let match = sidRegex.matches(in: cookies, range: NSRange(cookies.startIndex..., in: cookies)).first
else {
presentTokenUpdateFailedAlert(nil, String(format: "Could not extract SID from received cookies: %@".localized(), cookies))
return
}
let matchRange = match.range(withName: "sid")
if let substringRange = Range(matchRange, in: cookies) {
let sid = String(cookies[substringRange])
AccountsModel.setToken(self.account, sid)
self.objectWillChange.send()
} else {
presentTokenUpdateFailedAlert(nil, String(format: "Could not extract SID from received cookies: %@".localized(), cookies))
}
self.configure()
}
}
var login: Resource {
resource(baseURL: account.url, path: "login")
}
private func pathPattern(_ path: String) -> String {
"**\(Self.basePath)/\(path)"
}
private func basePathAppending(_ path: String) -> String {
"\(Self.basePath)/\(path)"
}
private var cookieHeader: String? {
guard let token = account?.token, !token.isEmpty else { return nil }
return "SID=\(token)"
}
var popular: Resource? {
resource(baseURL: account.url, path: "\(Self.basePath)/popular")
}
func trending(country _: Country, category _: TrendingCategory?) -> Resource {
resource(baseURL: account.url, path: "\(Self.basePath)/videos")
.withParam("isLocal", "true")
// .withParam("type", category?.name)
// .withParam("region", country.rawValue)
}
var home: Resource? {
resource(baseURL: account.url, path: "/feed/subscriptions")
}
func feed(_ page: Int?) -> Resource? {
resource(baseURL: account.url, path: "\(Self.basePath)/auth/feed")
.withParam("page", String(page ?? 1))
}
var subscriptions: Resource? {
resource(baseURL: account.url, path: basePathAppending("auth/subscriptions"))
}
func subscribe(_ channelID: String, onCompletion: @escaping () -> Void = {}) {
resource(baseURL: account.url, path: basePathAppending("auth/subscriptions"))
.child(channelID)
.request(.post)
.onCompletion { _ in onCompletion() }
}
func unsubscribe(_ channelID: String, onCompletion: @escaping () -> Void) {
resource(baseURL: account.url, path: basePathAppending("auth/subscriptions"))
.child(channelID)
.request(.delete)
.onCompletion { _ in onCompletion() }
}
func channel(_ id: String, contentType: Channel.ContentType, data _: String?, page _: String?) -> Resource {
if contentType == .playlists {
return resource(baseURL: account.url, path: basePathAppending("channels/\(id)/playlists"))
}
return resource(baseURL: account.url, path: basePathAppending("channels/\(id)"))
}
func channelByName(_: String) -> Resource? {
nil
}
func channelByUsername(_: String) -> Resource? {
nil
}
func channelVideos(_ id: String) -> Resource {
resource(baseURL: account.url, path: basePathAppending("channels/\(id)/latest"))
}
func video(_ id: String) -> Resource {
resource(baseURL: account.url, path: basePathAppending("videos/\(id)"))
}
var playlists: Resource? {
if account.isNil || account.anonymous {
return nil
}
return resource(baseURL: account.url, path: basePathAppending("auth/playlists"))
}
func playlist(_ id: String) -> Resource? {
resource(baseURL: account.url, path: basePathAppending("auth/playlists/\(id)"))
}
func playlistVideos(_ id: String) -> Resource? {
playlist(id)?.child("videos")
}
func playlistVideo(_ playlistID: String, _ videoID: String) -> Resource? {
playlist(playlistID)?.child("videos").child(videoID)
}
func addVideoToPlaylist(
_ videoID: String,
_ playlistID: String,
onFailure: @escaping (RequestError) -> Void = { _ in },
onSuccess: @escaping () -> Void = {}
) {
let resource = playlistVideos(playlistID)
let body = ["videoId": videoID]
resource?
.request(.post, json: body)
.onSuccess { _ in onSuccess() }
.onFailure(onFailure)
}
func removeVideoFromPlaylist(
_ index: String,
_ playlistID: String,
onFailure: @escaping (RequestError) -> Void,
onSuccess: @escaping () -> Void
) {
let resource = playlistVideo(playlistID, index)
resource?
.request(.delete)
.onSuccess { _ in onSuccess() }
.onFailure(onFailure)
}
func playlistForm(
_ name: String,
_ visibility: String,
playlist: Playlist?,
onFailure: @escaping (RequestError) -> Void,
onSuccess: @escaping (Playlist?) -> Void
) {
let body = ["title": name, "privacy": visibility]
let resource = !playlist.isNil ? self.playlist(playlist!.id) : playlists
resource?
.request(!playlist.isNil ? .patch : .post, json: body)
.onSuccess { response in
if let modifiedPlaylist: Playlist = response.typedContent() {
onSuccess(modifiedPlaylist)
}
}
.onFailure(onFailure)
}
func deletePlaylist(
_ playlist: Playlist,
onFailure: @escaping (RequestError) -> Void,
onSuccess: @escaping () -> Void
) {
self.playlist(playlist.id)?
.request(.delete)
.onSuccess { _ in onSuccess() }
.onFailure(onFailure)
}
func channelPlaylist(_ id: String) -> Resource? {
resource(baseURL: account.url, path: basePathAppending("playlists/\(id)"))
}
func search(_ query: SearchQuery, page _: String?) -> Resource {
var resource = resource(baseURL: account.url, path: basePathAppending("search/videos"))
.withParam("search", query.query)
// .withParam("sort_by", query.sortBy.parameter)
// .withParam("type", "all")
//
// if let date = query.date, date != .any {
// resource = resource.withParam("date", date.rawValue)
// }
//
// if let duration = query.duration, duration != .any {
// resource = resource.withParam("duration", duration.rawValue)
// }
//
// if let page {
// resource = resource.withParam("page", page)
// }
return resource
}
func searchSuggestions(query: String) -> Resource {
resource(baseURL: account.url, path: basePathAppending("search/suggestions"))
.withParam("q", query.lowercased())
}
func comments(_ id: Video.ID, page: String?) -> Resource? {
let resource = resource(baseURL: account.url, path: basePathAppending("comments/\(id)"))
guard let page else { return resource }
return resource.withParam("continuation", page)
}
static func proxiedAsset(instance: Instance, asset: AVURLAsset) -> AVURLAsset? {
guard let instanceURLComponents = URLComponents(string: instance.apiURLString),
var urlComponents = URLComponents(url: asset.url, resolvingAgainstBaseURL: false) else { return nil }
urlComponents.scheme = instanceURLComponents.scheme
urlComponents.host = instanceURLComponents.host
guard let url = urlComponents.url else {
return nil
}
return AVURLAsset(url: url)
}
func extractVideo(from json: JSON) -> Video {
let id = json["uuid"].stringValue
let url = json["url"].url
let dateFormatter = ISO8601DateFormatter()
dateFormatter.formatOptions = [.withInternetDateTime, .withFractionalSeconds]
let publishedAt = dateFormatter.date(from: json["publishedAt"].stringValue)
return Video(
instanceID: account.instanceID,
app: .peerTube,
instanceURL: account.instance.apiURL,
id: id,
videoID: id,
videoURL: url,
title: json["name"].stringValue,
author: json["channel"].dictionaryValue["name"]?.stringValue ?? "",
length: json["duration"].doubleValue,
views: json["views"].intValue,
description: json["description"].stringValue,
channel: extractChannel(from: json["channel"]),
thumbnails: extractThumbnails(from: json),
live: json["isLive"].boolValue,
publishedAt: publishedAt,
likes: json["likes"].int,
dislikes: json["dislikes"].int,
streams: extractStreams(from: json)
// related: extractRelated(from: json),
// chapters: extractChapters(from: description),
// captions: extractCaptions(from: json)
)
}
func extractChannel(from json: JSON) -> Channel {
Channel(
app: .peerTube,
id: json["id"].stringValue,
name: json["name"].stringValue
)
}
func extractChannelPlaylist(from json: JSON) -> ChannelPlaylist {
let details = json.dictionaryValue
return ChannelPlaylist(
id: details["playlistId"]?.string ?? details["mixId"]?.string ?? UUID().uuidString,
title: details["title"]?.stringValue ?? "",
thumbnailURL: details["playlistThumbnail"]?.url,
channel: extractChannel(from: json),
videos: details["videos"]?.arrayValue.compactMap(extractVideo) ?? [],
videosCount: details["videoCount"]?.int
)
}
private func extractThumbnails(from details: JSON) -> [Thumbnail] {
if let thumbnailPath = details["thumbnailPath"].string {
return [Thumbnail(url: URL(string: thumbnailPath, relativeTo: account.url)!, quality: .medium)]
}
return []
}
private func extractStreams(from json: JSON) -> [Stream] {
let hls = extractHLSStreams(from: json)
if json["isLive"].boolValue {
return hls
}
return extractFormatStreams(from: json) +
extractAdaptiveFormats(from: json) +
hls
}
private func extractFormatStreams(from json: JSON) -> [Stream] {
var streams = [Stream]()
if let fileURL = json.dictionaryValue["streamingPlaylists"]?.arrayValue.first?
.dictionaryValue["files"]?.arrayValue.first?
.dictionaryValue["fileUrl"]?.url
{
streams.append(SingleAssetStream(instance: account.instance, avAsset: AVURLAsset(url: fileURL), resolution: .hd720p30, kind: .stream))
}
return streams
}
private func extractAdaptiveFormats(from json: JSON) -> [Stream] {
json.dictionaryValue["files"]?.arrayValue.compactMap { file in
if let resolution = file.dictionaryValue["resolution"]?.dictionaryValue["label"]?.stringValue, let url = file.dictionaryValue["fileUrl"]?.url {
return SingleAssetStream(instance: account.instance, avAsset: AVURLAsset(url: url), resolution: Stream.Resolution.from(resolution: resolution), kind: .adaptive, videoFormat: "mp4")
}
return nil
} ?? []
}
private func extractHLSStreams(from content: JSON) -> [Stream] {
if let hlsURL = content.dictionaryValue["streamingPlaylists"]?.arrayValue.first?.dictionaryValue["playlistUrl"]?.url {
return [Stream(instance: account.instance, hlsURL: hlsURL)]
}
return []
}
private func extractRelated(from content: JSON) -> [Video] {
content
.dictionaryValue["recommendedVideos"]?
.arrayValue
.compactMap(extractVideo(from:)) ?? []
}
private func extractPlaylist(from content: JSON) -> Playlist {
let id = content["playlistId"].stringValue
return Playlist(
id: id,
title: content["title"].stringValue,
visibility: content["isListed"].boolValue ? .public : .private,
editable: id.starts(with: "IV"),
updated: content["updated"].doubleValue,
videos: content["videos"].arrayValue.map { extractVideo(from: $0) }
)
}
private func extractComment(from content: JSON) -> Comment? {
let details = content.dictionaryValue
let author = details["author"]?.string ?? ""
let channelId = details["authorId"]?.string ?? UUID().uuidString
let authorAvatarURL = details["authorThumbnails"]?.arrayValue.last?.dictionaryValue["url"]?.string ?? ""
return Comment(
id: UUID().uuidString,
author: author,
authorAvatarURL: authorAvatarURL,
time: details["publishedText"]?.string ?? "",
pinned: false,
hearted: false,
likeCount: details["likeCount"]?.int ?? 0,
text: details["content"]?.string ?? "",
repliesPage: details["replies"]?.dictionaryValue["continuation"]?.string,
channel: Channel(app: .peerTube, id: channelId, name: author)
)
}
private func extractCaptions(from content: JSON) -> [Captions] {
content["captions"].arrayValue.compactMap { _ in
nil
// let baseURL = account.url
// guard let url = URL(string: baseURL + details["url"].stringValue) else { return nil }
//
// return Captions(
// label: details["label"].stringValue,
// code: details["language_code"].stringValue,
// url: url
// )
}
}
}