yattee/Model/Applications/InvidiousAPI.swift

679 lines
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Swift
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import Alamofire
import AVKit
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import Defaults
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import Foundation
import Siesta
import SwiftyJSON
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final class InvidiousAPI: Service, ObservableObject, VideosAPI {
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static let basePath = "/api/v1"
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@Published var account: Account!
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@Published var validInstance = true
var signedIn: Bool {
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guard let account else { return false }
return !account.anonymous && !(account.token?.isEmpty ?? true)
}
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init(account: Account? = nil) {
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super.init()
guard !account.isNil else {
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self.account = .init(name: "Empty")
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return
}
setAccount(account!)
}
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func setAccount(_ account: Account) {
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self.account = account
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validInstance = account.anonymous
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configure()
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if !account.anonymous {
validate()
}
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}
func validate() {
validateInstance()
validateSID()
}
func validateInstance() {
guard !validInstance else {
return
}
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home?
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.load()
.onSuccess { _ in
self.validInstance = true
}
.onFailure { _ in
self.validInstance = false
}
}
func validateSID() {
guard signedIn, !(account.token?.isEmpty ?? true) else {
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return
}
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feed?
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.load()
.onFailure { _ in
self.updateToken(force: true)
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}
}
func configure() {
invalidateConfiguration()
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configure {
if let cookie = self.cookieHeader {
$0.headers["Cookie"] = cookie
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}
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$0.pipeline[.parsing].add(SwiftyJSONTransformer, contentTypes: ["*/json"])
}
configure("**", requestMethods: [.post]) {
$0.pipeline[.parsing].removeTransformers()
}
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configureTransformer(pathPattern("popular"), requestMethods: [.get]) { (content: Entity<JSON>) -> [Video] in
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content.json.arrayValue.map(self.extractVideo)
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}
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configureTransformer(pathPattern("trending"), requestMethods: [.get]) { (content: Entity<JSON>) -> [Video] in
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content.json.arrayValue.map(self.extractVideo)
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}
configureTransformer(pathPattern("search"), requestMethods: [.get]) { (content: Entity<JSON>) -> SearchPage in
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let results = content.json.arrayValue.compactMap { json -> ContentItem? in
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let type = json.dictionaryValue["type"]?.string
if type == "channel" {
return ContentItem(channel: self.extractChannel(from: json))
} else if type == "playlist" {
return ContentItem(playlist: self.extractChannelPlaylist(from: json))
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} else if type == "video" {
return ContentItem(video: self.extractVideo(from: json))
}
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return nil
}
return SearchPage(results: results, last: results.isEmpty)
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}
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configureTransformer(pathPattern("search/suggestions"), requestMethods: [.get]) { (content: Entity<JSON>) -> [String] in
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if let suggestions = content.json.dictionaryValue["suggestions"] {
return suggestions.arrayValue.map(String.init)
}
return []
}
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configureTransformer(pathPattern("auth/playlists"), requestMethods: [.get]) { (content: Entity<JSON>) -> [Playlist] in
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content.json.arrayValue.map(self.extractPlaylist)
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}
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configureTransformer(pathPattern("auth/playlists/*"), requestMethods: [.get]) { (content: Entity<JSON>) -> Playlist in
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self.extractPlaylist(from: content.json)
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}
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configureTransformer(pathPattern("auth/playlists"), requestMethods: [.post, .patch]) { (content: Entity<Data>) -> Playlist in
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// hacky, to verify if possible to get it in easier way
Playlist(JSON(parseJSON: String(data: content.content, encoding: .utf8)!))
}
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configureTransformer(pathPattern("auth/feed"), requestMethods: [.get]) { (content: Entity<JSON>) -> [Video] in
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if let feedVideos = content.json.dictionaryValue["videos"] {
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return feedVideos.arrayValue.map(self.extractVideo)
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}
return []
}
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configureTransformer(pathPattern("auth/subscriptions"), requestMethods: [.get]) { (content: Entity<JSON>) -> [Channel] in
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content.json.arrayValue.map(self.extractChannel)
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}
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configureTransformer(pathPattern("channels/*"), requestMethods: [.get]) { (content: Entity<JSON>) -> Channel in
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self.extractChannel(from: content.json)
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}
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configureTransformer(pathPattern("channels/*/latest"), requestMethods: [.get]) { (content: Entity<JSON>) -> [Video] in
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content.json.arrayValue.map(self.extractVideo)
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}
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configureTransformer(pathPattern("playlists/*"), requestMethods: [.get]) { (content: Entity<JSON>) -> ChannelPlaylist in
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self.extractChannelPlaylist(from: content.json)
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}
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configureTransformer(pathPattern("videos/*"), requestMethods: [.get]) { (content: Entity<JSON>) -> Video in
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self.extractVideo(from: content.json)
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}
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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
}
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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 {
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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)
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self.objectWillChange.send()
} else {
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presentTokenUpdateFailedAlert(nil, String(format: "Could not extract SID from received cookies: %@".localized(), cookies))
}
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self.configure()
}
}
var login: Resource {
resource(baseURL: account.url, path: "login")
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}
private func pathPattern(_ path: String) -> String {
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"**\(Self.basePath)/\(path)"
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}
private func basePathAppending(_ path: String) -> String {
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"\(Self.basePath)/\(path)"
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}
private var cookieHeader: String? {
guard let token = account?.token, !token.isEmpty else { return nil }
return "SID=\(token)"
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}
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var popular: Resource? {
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resource(baseURL: account.url, path: "\(Self.basePath)/popular")
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}
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func trending(country: Country, category: TrendingCategory?) -> Resource {
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resource(baseURL: account.url, path: "\(Self.basePath)/trending")
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.withParam("type", category?.name)
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.withParam("region", country.rawValue)
}
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var home: Resource? {
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resource(baseURL: account.url, path: "/feed/subscriptions")
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}
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var feed: Resource? {
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resource(baseURL: account.url, path: "\(Self.basePath)/auth/feed")
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}
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var subscriptions: Resource? {
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resource(baseURL: account.url, path: basePathAppending("auth/subscriptions"))
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}
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() }
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}
func channel(_ id: String) -> Resource {
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resource(baseURL: account.url, path: basePathAppending("channels/\(id)"))
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}
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func channelByName(_: String) -> Resource? {
nil
}
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func channelByUsername(_: String) -> Resource? {
nil
}
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func channelVideos(_ id: String) -> Resource {
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resource(baseURL: account.url, path: basePathAppending("channels/\(id)/latest"))
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}
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func video(_ id: String) -> Resource {
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resource(baseURL: account.url, path: basePathAppending("videos/\(id)"))
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}
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var playlists: Resource? {
if account.isNil || account.anonymous {
return nil
}
return resource(baseURL: account.url, path: basePathAppending("auth/playlists"))
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}
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func playlist(_ id: String) -> Resource? {
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resource(baseURL: account.url, path: basePathAppending("auth/playlists/\(id)"))
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}
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func playlistVideos(_ id: String) -> Resource? {
playlist(id)?.child("videos")
}
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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)
}
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func channelPlaylist(_ id: String) -> Resource? {
resource(baseURL: account.url, path: basePathAppending("playlists/\(id)"))
}
func search(_ query: SearchQuery, page: String?) -> Resource {
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var resource = resource(baseURL: account.url, path: basePathAppending("search"))
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.withParam("q", searchQuery(query.query))
.withParam("sort_by", query.sortBy.parameter)
.withParam("type", "all")
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if let date = query.date, date != .any {
resource = resource.withParam("date", date.rawValue)
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}
if let duration = query.duration, duration != .any {
resource = resource.withParam("duration", duration.rawValue)
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}
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if let page {
resource = resource.withParam("page", page)
}
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return resource
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}
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func searchSuggestions(query: String) -> Resource {
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resource(baseURL: account.url, path: basePathAppending("search/suggestions"))
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.withParam("q", query.lowercased())
}
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func comments(_ id: Video.ID, page: String?) -> Resource? {
let resource = resource(baseURL: account.url, path: basePathAppending("comments/\(id)"))
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guard let page else { return resource }
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return resource.withParam("continuation", page)
}
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private func searchQuery(_ query: String) -> String {
var searchQuery = query
let url = URLComponents(string: query)
if url != nil,
url!.host == "youtu.be"
{
searchQuery = url!.path.replacingOccurrences(of: "/", with: "")
}
let queryItem = url?.queryItems?.first { item in item.name == "v" }
if let id = queryItem?.value {
searchQuery = id
}
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return searchQuery
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}
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static func proxiedAsset(instance: Instance, asset: AVURLAsset) -> AVURLAsset? {
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guard let instanceURLComponents = URLComponents(string: instance.apiURL),
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var urlComponents = URLComponents(url: asset.url, resolvingAgainstBaseURL: false) else { return nil }
urlComponents.scheme = instanceURLComponents.scheme
urlComponents.host = instanceURLComponents.host
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guard let url = urlComponents.url else {
return nil
}
return AVURLAsset(url: url)
}
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func extractVideo(from json: JSON) -> Video {
let indexID: String?
var id: Video.ID
var publishedAt: Date?
if let publishedInterval = json["published"].double {
publishedAt = Date(timeIntervalSince1970: publishedInterval)
}
let videoID = json["videoId"].stringValue
if let index = json["indexId"].string {
indexID = index
id = videoID + index
} else {
indexID = nil
id = videoID
}
let description = json["description"].stringValue
return Video(
id: id,
videoID: videoID,
title: json["title"].stringValue,
author: json["author"].stringValue,
length: json["lengthSeconds"].doubleValue,
published: json["publishedText"].stringValue,
views: json["viewCount"].intValue,
description: description,
genre: json["genre"].stringValue,
channel: extractChannel(from: json),
thumbnails: extractThumbnails(from: json),
indexID: indexID,
live: json["liveNow"].boolValue,
upcoming: json["isUpcoming"].boolValue,
publishedAt: publishedAt,
likes: json["likeCount"].int,
dislikes: json["dislikeCount"].int,
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keywords: json["keywords"].arrayValue.compactMap { $0.string },
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streams: extractStreams(from: json),
related: extractRelated(from: json),
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chapters: extractChapters(from: description),
captions: extractCaptions(from: json)
)
}
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func extractChannel(from json: JSON) -> Channel {
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var thumbnailURL = json["authorThumbnails"].arrayValue.last?.dictionaryValue["url"]?.string ?? ""
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// append protocol to unproxied thumbnail URL if it's missing
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if thumbnailURL.count > 2,
String(thumbnailURL[..<thumbnailURL.index(thumbnailURL.startIndex, offsetBy: 2)]) == "//",
let accountUrlComponents = URLComponents(string: account.url)
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{
thumbnailURL = "\(accountUrlComponents.scheme ?? "https"):\(thumbnailURL)"
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}
return Channel(
id: json["authorId"].stringValue,
name: json["author"].stringValue,
thumbnailURL: URL(string: thumbnailURL),
subscriptionsCount: json["subCount"].int,
subscriptionsText: json["subCountText"].string,
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videos: json.dictionaryValue["latestVideos"]?.arrayValue.map(extractVideo) ?? []
)
}
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func extractChannelPlaylist(from json: JSON) -> ChannelPlaylist {
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let details = json.dictionaryValue
return ChannelPlaylist(
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id: details["playlistId"]?.string ?? details["mixId"]?.string ?? UUID().uuidString,
title: details["title"]?.stringValue ?? "",
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thumbnailURL: details["playlistThumbnail"]?.url,
channel: extractChannel(from: json),
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videos: details["videos"]?.arrayValue.compactMap(extractVideo) ?? []
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)
}
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private func extractThumbnails(from details: JSON) -> [Thumbnail] {
details["videoThumbnails"].arrayValue.compactMap { json in
guard let url = json["url"].url,
var components = URLComponents(url: url, resolvingAgainstBaseURL: false),
let quality = json["quality"].string,
let accountUrlComponents = URLComponents(string: account.url)
else {
return nil
}
// some of instances are not configured properly and return thumbnails links
// with incorrect scheme
components.scheme = accountUrlComponents.scheme
guard let thumbnailUrl = components.url else {
return nil
}
return Thumbnail(url: thumbnailUrl, quality: .init(rawValue: quality)!)
}
}
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private func extractStreams(from json: JSON) -> [Stream] {
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let hls = extractHLSStreams(from: json)
if json["liveNow"].boolValue {
return hls
}
return extractFormatStreams(from: json["formatStreams"].arrayValue) +
extractAdaptiveFormats(from: json["adaptiveFormats"].arrayValue) +
hls
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}
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private func extractFormatStreams(from streams: [JSON]) -> [Stream] {
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streams.compactMap { stream in
guard let streamURL = stream["url"].url else {
return nil
}
return SingleAssetStream(
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instance: account.instance,
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avAsset: AVURLAsset(url: streamURL),
resolution: Stream.Resolution.from(resolution: stream["resolution"].string ?? ""),
kind: .stream,
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encoding: stream["encoding"].string ?? ""
)
}
}
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private func extractAdaptiveFormats(from streams: [JSON]) -> [Stream] {
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let audioStreams = streams
.filter { $0["type"].stringValue.starts(with: "audio/mp4") }
.sorted {
$0.dictionaryValue["bitrate"]?.int ?? 0 >
$1.dictionaryValue["bitrate"]?.int ?? 0
}
guard let audioStream = audioStreams.first else {
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return .init()
}
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let videoStreams = streams.filter { $0["type"].stringValue.starts(with: "video/") }
return videoStreams.compactMap { videoStream in
guard let audioAssetURL = audioStream["url"].url,
let videoAssetURL = videoStream["url"].url
else {
return nil
}
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return Stream(
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instance: account.instance,
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audioAsset: AVURLAsset(url: audioAssetURL),
videoAsset: AVURLAsset(url: videoAssetURL),
resolution: Stream.Resolution.from(resolution: videoStream["resolution"].stringValue),
kind: .adaptive,
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encoding: videoStream["encoding"].string,
videoFormat: videoStream["type"].string
)
}
}
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private func extractHLSStreams(from content: JSON) -> [Stream] {
if let hlsURL = content.dictionaryValue["hlsUrl"]?.url {
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return [Stream(instance: account.instance, hlsURL: hlsURL)]
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}
return []
}
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private func extractRelated(from content: JSON) -> [Video] {
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content
.dictionaryValue["recommendedVideos"]?
.arrayValue
.compactMap(extractVideo(from:)) ?? []
}
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private func extractPlaylist(from content: JSON) -> Playlist {
let id = content["playlistId"].stringValue
return Playlist(
id: id,
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title: content["title"].stringValue,
visibility: content["isListed"].boolValue ? .public : .private,
editable: id.starts(with: "IV"),
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updated: content["updated"].doubleValue,
videos: content["videos"].arrayValue.map { extractVideo(from: $0) }
)
}
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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(id: channelId, name: author)
)
}
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private func extractCaptions(from content: JSON) -> [Captions] {
content["captions"].arrayValue.compactMap { details in
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let baseURL = account.url
guard let url = URL(string: baseURL + details["url"].stringValue) else { return nil }
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return Captions(
label: details["label"].stringValue,
code: details["language_code"].stringValue,
url: url
)
}
}
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}