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Create CommonErrors module.
This commit is contained in:
Brent Simmons
581
ReaderAPI/Sources/ReaderAPI/ReaderAPICaller.swift
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581
ReaderAPI/Sources/ReaderAPI/ReaderAPICaller.swift
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@@ -0,0 +1,581 @@
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//
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// ReaderAPICaller.swift
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// Account
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//
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// Created by Jeremy Beker on 5/28/19.
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// Copyright © 2019 Ranchero Software, LLC. All rights reserved.
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//
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import Foundation
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import Web
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import Secrets
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import CommonErrors
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public protocol ReaderAPICallerDelegate: AnyObject {
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var endpointURL: URL? { get }
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var lastArticleFetchStartTime: Date? { get set }
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var lastArticleFetchEndTime: Date? { get set }
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}
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public enum CreateReaderAPISubscriptionResult: Sendable {
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case created(ReaderAPISubscription)
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case notFound
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}
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@MainActor final class ReaderAPICaller {
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enum ItemIDType {
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case unread
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case starred
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case allForAccount
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case allForFeed
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}
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private enum ReaderState: String {
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case read = "user/-/state/com.google/read"
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case starred = "user/-/state/com.google/starred"
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}
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private enum ReaderStreams: String {
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case readingList = "user/-/state/com.google/reading-list"
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}
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private enum ReaderAPIEndpoints: String {
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case login = "/accounts/ClientLogin"
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case token = "/reader/api/0/token"
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case disableTag = "/reader/api/0/disable-tag"
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case renameTag = "/reader/api/0/rename-tag"
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case tagList = "/reader/api/0/tag/list"
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case subscriptionList = "/reader/api/0/subscription/list"
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case subscriptionEdit = "/reader/api/0/subscription/edit"
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case subscriptionAdd = "/reader/api/0/subscription/quickadd"
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case contents = "/reader/api/0/stream/items/contents"
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case itemIds = "/reader/api/0/stream/items/ids"
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case editTag = "/reader/api/0/edit-tag"
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}
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private var transport: Transport!
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private let secretsProvider: SecretsProvider
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private let uriComponentAllowed: CharacterSet
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private var accessToken: String?
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weak var delegate: ReaderAPICallerDelegate?
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var variant: ReaderAPIVariant = .generic
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var credentials: Credentials?
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var server: String? {
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get {
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return apiBaseURL?.host
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}
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}
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private var apiBaseURL: URL? {
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get {
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switch variant {
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case .generic, .freshRSS:
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return delegate?.endpointURL
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default:
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return URL(string: variant.host)
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}
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}
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}
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init(transport: Transport, secretsProvider: SecretsProvider) {
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self.transport = transport
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self.secretsProvider = secretsProvider
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var urlHostAllowed = CharacterSet.urlHostAllowed
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urlHostAllowed.remove("+")
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urlHostAllowed.remove("&")
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self.uriComponentAllowed = urlHostAllowed
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}
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func cancelAll() {
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transport.cancelAll()
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}
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func validateCredentials(endpoint: URL) async throws -> Credentials? {
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guard let credentials else {
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throw CredentialsError.incompleteCredentials
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}
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var request = URLRequest(url: endpoint.appendingPathComponent(ReaderAPIEndpoints.login.rawValue), readerAPICredentials: credentials)
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addVariantHeaders(&request)
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do {
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let (_, data) = try await transport.send(request: request)
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guard let data else {
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throw TransportError.noData
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}
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// Convert the return data to UTF8 and then parse out the Auth token
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guard let rawData = String(data: data, encoding: .utf8) else {
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throw TransportError.noData
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}
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var authData: [String: String] = [:]
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rawData.split(separator: "\n").forEach({ (line: Substring) in
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let items = line.split(separator: "=").map{String($0)}
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if items.count == 2 {
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authData[items[0]] = items[1]
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}
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})
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guard let authString = authData["Auth"] else {
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throw CredentialsError.incompleteCredentials
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}
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// Save Auth Token for later use
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self.credentials = Credentials(type: .readerAPIKey, username: credentials.username, secret: authString)
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return self.credentials
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} catch {
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if let transportError = error as? TransportError, case .httpError(let code) = transportError, code == 404 {
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throw ReaderAPIError.urlNotFound
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} else {
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throw error
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}
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}
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}
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func requestAuthorizationToken(endpoint: URL) async throws -> String {
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// If we have a token already, use it
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if let accessToken {
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return accessToken
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}
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// Otherwise request one.
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guard let credentials else {
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throw CredentialsError.incompleteCredentials
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}
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var request = URLRequest(url: endpoint.appendingPathComponent(ReaderAPIEndpoints.token.rawValue), readerAPICredentials: credentials)
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addVariantHeaders(&request)
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let (_, data) = try await transport.send(request: request)
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// Convert the return data to UTF8 and then parse out the Auth token
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guard let data, let accessToken = String(data: data, encoding: .utf8) else {
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throw TransportError.noData
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}
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self.accessToken = accessToken
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return accessToken
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}
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func retrieveTags() async throws -> [ReaderAPITag]? {
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guard let baseURL = apiBaseURL else {
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throw CredentialsError.incompleteCredentials
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}
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var url = baseURL
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.appendingPathComponent(ReaderAPIEndpoints.tagList.rawValue)
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.appendingQueryItem(URLQueryItem(name: "output", value: "json"))
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if variant == .inoreader {
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url = url?.appendingQueryItem(URLQueryItem(name: "types", value: "1"))
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}
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guard let callURL = url else {
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throw TransportError.noURL
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}
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var request = URLRequest(url: callURL, readerAPICredentials: credentials)
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addVariantHeaders(&request)
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let (_, wrapper) = try await transport.send(request: request, resultType: ReaderAPITagContainer.self)
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return wrapper?.tags
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}
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func renameTag(oldName: String, newName: String) async throws {
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guard let baseURL = apiBaseURL else {
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throw CredentialsError.incompleteCredentials
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}
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let token = try await requestAuthorizationToken(endpoint: baseURL)
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var request = URLRequest(url: baseURL.appendingPathComponent(ReaderAPIEndpoints.renameTag.rawValue), readerAPICredentials: self.credentials)
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self.addVariantHeaders(&request)
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request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
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request.httpMethod = "POST"
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guard let encodedOldName = self.encodeForURLPath(oldName), let encodedNewName = self.encodeForURLPath(newName) else {
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throw ReaderAPIError.invalidParameter
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}
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let oldTagName = "user/-/label/\(encodedOldName)"
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let newTagName = "user/-/label/\(encodedNewName)"
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let postData = "T=\(token)&s=\(oldTagName)&dest=\(newTagName)".data(using: String.Encoding.utf8)
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try await transport.send(request: request, method: HTTPMethod.post, payload: postData!)
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}
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func deleteTag(folderExternalID: String) async throws {
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guard let baseURL = apiBaseURL else {
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throw CredentialsError.incompleteCredentials
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}
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let token = try await self.requestAuthorizationToken(endpoint: baseURL)
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var request = URLRequest(url: baseURL.appendingPathComponent(ReaderAPIEndpoints.disableTag.rawValue), readerAPICredentials: self.credentials)
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self.addVariantHeaders(&request)
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request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
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request.httpMethod = "POST"
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let postData = "T=\(token)&s=\(folderExternalID)".data(using: String.Encoding.utf8)
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try await self.transport.send(request: request, method: HTTPMethod.post, payload: postData!)
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}
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func retrieveSubscriptions() async throws -> [ReaderAPISubscription]? {
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guard let baseURL = apiBaseURL else {
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throw CredentialsError.incompleteCredentials
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}
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let url = baseURL
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.appendingPathComponent(ReaderAPIEndpoints.subscriptionList.rawValue)
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.appendingQueryItem(URLQueryItem(name: "output", value: "json"))
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guard let callURL = url else {
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throw TransportError.noURL
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}
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var request = URLRequest(url: callURL, readerAPICredentials: credentials)
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addVariantHeaders(&request)
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let (_, container) = try await transport.send(request: request, resultType: ReaderAPISubscriptionContainer.self)
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return container?.subscriptions
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}
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func createSubscription(url: String, name: String?) async throws -> CreateReaderAPISubscriptionResult {
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guard let baseURL = apiBaseURL else {
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throw CredentialsError.incompleteCredentials
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}
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let token = try await self.requestAuthorizationToken(endpoint: baseURL)
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let callURL = baseURL
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.appendingPathComponent(ReaderAPIEndpoints.subscriptionAdd.rawValue)
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var request = URLRequest(url: callURL, readerAPICredentials: self.credentials)
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self.addVariantHeaders(&request)
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request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
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request.httpMethod = "POST"
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guard let encodedFeedURL = self.encodeForURLPath(url) else {
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throw ReaderAPIError.invalidParameter
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}
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let postData = "T=\(token)&quickadd=\(encodedFeedURL)".data(using: String.Encoding.utf8)
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let (_, subResult) = try await self.transport.send(request: request, method: HTTPMethod.post, data: postData!, resultType: ReaderAPIQuickAddResult.self)
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guard let subResult else {
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return .notFound
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}
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if subResult.numResults == 0 {
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return .notFound
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}
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// There is no call to get a single subscription entry, so we get them all,
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// look up the one we just subscribed to and return that
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guard let subscriptions = try await retrieveSubscriptions() else {
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throw CommonError.createErrorNotFound
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}
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guard let subscription = subscriptions.first(where: { $0.feedID == subResult.streamID }) else {
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throw CommonError.createErrorNotFound
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}
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return .created(subscription)
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}
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func renameSubscription(subscriptionID: String, newName: String) async throws {
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try await changeSubscription(subscriptionID: subscriptionID, title: newName)
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}
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func deleteSubscription(subscriptionID: String) async throws {
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guard let baseURL = apiBaseURL else {
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throw CredentialsError.incompleteCredentials
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}
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let token = try await self.requestAuthorizationToken(endpoint: baseURL)
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var request = URLRequest(url: baseURL.appendingPathComponent(ReaderAPIEndpoints.subscriptionEdit.rawValue), readerAPICredentials: self.credentials)
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self.addVariantHeaders(&request)
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request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
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request.httpMethod = "POST"
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let postData = "T=\(token)&s=\(subscriptionID)&ac=unsubscribe".data(using: String.Encoding.utf8)
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try await self.transport.send(request: request, method: HTTPMethod.post, payload: postData!)
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}
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func createTagging(subscriptionID: String, tagName: String) async throws {
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try await changeSubscription(subscriptionID: subscriptionID, addTagName: tagName)
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}
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func deleteTagging(subscriptionID: String, tagName: String) async throws {
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try await changeSubscription(subscriptionID: subscriptionID, removeTagName: tagName)
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}
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func moveSubscription(subscriptionID: String, sourceTag: String, destinationTag: String) async throws {
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try await changeSubscription(subscriptionID: subscriptionID, removeTagName: sourceTag, addTagName: destinationTag)
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}
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private func changeSubscription(subscriptionID: String, removeTagName: String? = nil, addTagName: String? = nil, title: String? = nil) async throws {
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guard removeTagName != nil || addTagName != nil || title != nil else {
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throw ReaderAPIError.invalidParameter
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}
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guard let baseURL = apiBaseURL else {
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throw CredentialsError.incompleteCredentials
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}
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let token = try await requestAuthorizationToken(endpoint: baseURL)
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var request = URLRequest(url: baseURL.appendingPathComponent(ReaderAPIEndpoints.subscriptionEdit.rawValue), readerAPICredentials: self.credentials)
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self.addVariantHeaders(&request)
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request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
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request.httpMethod = "POST"
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var postString = "T=\(token)&s=\(subscriptionID)&ac=edit"
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if let fromLabel = self.encodeForURLPath(removeTagName) {
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postString += "&r=user/-/label/\(fromLabel)"
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}
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if let toLabel = self.encodeForURLPath(addTagName) {
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postString += "&a=user/-/label/\(toLabel)"
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}
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if let encodedTitle = self.encodeForURLPath(title) {
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postString += "&t=\(encodedTitle)"
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}
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let postData = postString.data(using: String.Encoding.utf8)
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try await transport.send(request: request, method: HTTPMethod.post, payload: postData!)
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}
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func retrieveEntries(articleIDs: [String]) async throws -> [ReaderAPIEntry]? {
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guard !articleIDs.isEmpty else {
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return [ReaderAPIEntry]()
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}
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guard let baseURL = apiBaseURL else {
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throw CredentialsError.incompleteCredentials
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}
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let token = try await requestAuthorizationToken(endpoint: baseURL)
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var request = URLRequest(url: baseURL.appendingPathComponent(ReaderAPIEndpoints.contents.rawValue), readerAPICredentials: self.credentials)
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self.addVariantHeaders(&request)
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request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
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request.httpMethod = "POST"
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// Get ids from above into hex representation of value
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let idsToFetch = articleIDs.map({ articleID -> String in
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if self.variant == .theOldReader {
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return "i=tag:google.com,2005:reader/item/\(articleID)"
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} else {
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let idValue = Int(articleID)!
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let idHexString = String(idValue, radix: 16, uppercase: false)
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return "i=tag:google.com,2005:reader/item/\(idHexString)"
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}
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}).joined(separator:"&")
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let postData = "T=\(token)&output=json&\(idsToFetch)".data(using: String.Encoding.utf8)
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let (_, entryWrapper) = try await transport.send(request: request, method: HTTPMethod.post, data: postData!, resultType: ReaderAPIEntryWrapper.self)
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guard let entryWrapper else {
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throw ReaderAPIError.invalidResponse
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}
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return entryWrapper.entries
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}
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func retrieveItemIDs(type: ItemIDType, feedID: String? = nil) async throws -> [String] {
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guard let baseURL = apiBaseURL else {
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throw CredentialsError.incompleteCredentials
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}
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var queryItems = [
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URLQueryItem(name: "n", value: "1000"),
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URLQueryItem(name: "output", value: "json")
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]
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switch type {
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case .allForAccount:
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let since: Date = {
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if let lastArticleFetch = delegate?.lastArticleFetchStartTime {
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return lastArticleFetch
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} else {
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return Calendar.current.date(byAdding: .month, value: -3, to: Date()) ?? Date()
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}
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}()
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let sinceTimeInterval = since.timeIntervalSince1970
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queryItems.append(URLQueryItem(name: "ot", value: String(Int(sinceTimeInterval))))
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queryItems.append(URLQueryItem(name: "s", value: ReaderStreams.readingList.rawValue))
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case .allForFeed:
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guard let feedID else {
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throw ReaderAPIError.invalidParameter
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}
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let sinceTimeInterval = (Calendar.current.date(byAdding: .month, value: -3, to: Date()) ?? Date()).timeIntervalSince1970
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queryItems.append(URLQueryItem(name: "ot", value: String(Int(sinceTimeInterval))))
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queryItems.append(URLQueryItem(name: "s", value: feedID))
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case .unread:
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queryItems.append(URLQueryItem(name: "s", value: ReaderStreams.readingList.rawValue))
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queryItems.append(URLQueryItem(name: "xt", value: ReaderState.read.rawValue))
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case .starred:
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queryItems.append(URLQueryItem(name: "s", value: ReaderState.starred.rawValue))
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}
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let url = baseURL
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.appendingPathComponent(ReaderAPIEndpoints.itemIds.rawValue)
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.appendingQueryItems(queryItems)
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guard let callURL = url else {
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throw TransportError.noURL
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}
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var request: URLRequest = URLRequest(url: callURL, readerAPICredentials: credentials)
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addVariantHeaders(&request)
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let (response, entries) = try await transport.send(request: request, resultType: ReaderAPIReferenceWrapper.self)
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guard let entriesItemRefs = entries?.itemRefs, entriesItemRefs.count > 0 else {
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return [String]()
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}
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let dateInfo = HTTPDateInfo(urlResponse: response)
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let itemIDs = entriesItemRefs.compactMap { $0.itemID }
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return try await retrieveItemIDs(type: type, url: callURL, dateInfo: dateInfo, itemIDs: itemIDs, continuation: entries?.continuation)
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}
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func retrieveItemIDs(type: ItemIDType, url: URL, dateInfo: HTTPDateInfo?, itemIDs: [String], continuation: String?) async throws -> [String] {
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guard let continuation else {
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if type == .allForAccount {
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delegate?.lastArticleFetchStartTime = dateInfo?.date
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||||
delegate?.lastArticleFetchEndTime = Date()
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}
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return itemIDs
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}
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||||
|
||||
guard var urlComponents = URLComponents(url: url, resolvingAgainstBaseURL: false) else {
|
||||
throw ReaderAPIError.invalidParameter
|
||||
}
|
||||
|
||||
var queryItems = urlComponents.queryItems!.filter({ $0.name != "c" })
|
||||
queryItems.append(URLQueryItem(name: "c", value: continuation))
|
||||
urlComponents.queryItems = queryItems
|
||||
|
||||
guard let callURL = urlComponents.url else {
|
||||
throw TransportError.noURL
|
||||
}
|
||||
|
||||
var request: URLRequest = URLRequest(url: callURL, readerAPICredentials: credentials)
|
||||
addVariantHeaders(&request)
|
||||
|
||||
let (_, entries) = try await self.transport.send(request: request, resultType: ReaderAPIReferenceWrapper.self)
|
||||
|
||||
guard let entriesItemRefs = entries?.itemRefs, entriesItemRefs.count > 0 else {
|
||||
return try await retrieveItemIDs(type: type, url: callURL, dateInfo: dateInfo, itemIDs: itemIDs, continuation: entries?.continuation)
|
||||
}
|
||||
|
||||
var totalItemIDs = itemIDs
|
||||
totalItemIDs.append(contentsOf: entriesItemRefs.compactMap { $0.itemID })
|
||||
|
||||
return try await retrieveItemIDs(type: type, url: callURL, dateInfo: dateInfo, itemIDs: totalItemIDs, continuation: entries?.continuation)
|
||||
}
|
||||
|
||||
func createUnreadEntries(entries: [String]) async throws {
|
||||
|
||||
try await updateStateToEntries(entries: entries, state: .read, add: false)
|
||||
}
|
||||
|
||||
func deleteUnreadEntries(entries: [String]) async throws {
|
||||
|
||||
try await updateStateToEntries(entries: entries, state: .read, add: true)
|
||||
}
|
||||
|
||||
func createStarredEntries(entries: [String]) async throws {
|
||||
|
||||
try await updateStateToEntries(entries: entries, state: .starred, add: true)
|
||||
}
|
||||
|
||||
func deleteStarredEntries(entries: [String]) async throws {
|
||||
|
||||
try await updateStateToEntries(entries: entries, state: .starred, add: false)
|
||||
}
|
||||
}
|
||||
|
||||
// MARK: Private
|
||||
|
||||
private extension ReaderAPICaller {
|
||||
|
||||
func encodeForURLPath(_ pathComponent: String?) -> String? {
|
||||
guard let pathComponent = pathComponent else { return nil }
|
||||
return pathComponent.addingPercentEncoding(withAllowedCharacters: uriComponentAllowed)
|
||||
}
|
||||
|
||||
func addVariantHeaders(_ request: inout URLRequest) {
|
||||
if variant == .inoreader {
|
||||
request.addValue(secretsProvider.inoreaderAppId, forHTTPHeaderField: "AppId")
|
||||
request.addValue(secretsProvider.inoreaderAppKey, forHTTPHeaderField: "AppKey")
|
||||
}
|
||||
}
|
||||
|
||||
private func updateStateToEntries(entries: [String], state: ReaderState, add: Bool) async throws {
|
||||
|
||||
guard let baseURL = apiBaseURL else {
|
||||
throw CredentialsError.incompleteCredentials
|
||||
}
|
||||
|
||||
let token = try await requestAuthorizationToken(endpoint: baseURL)
|
||||
|
||||
// Do POST asking for data about all the new articles
|
||||
var request = URLRequest(url: baseURL.appendingPathComponent(ReaderAPIEndpoints.editTag.rawValue), readerAPICredentials: self.credentials)
|
||||
self.addVariantHeaders(&request)
|
||||
request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
|
||||
request.httpMethod = "POST"
|
||||
|
||||
// Get ids from above into hex representation of value
|
||||
let idsToFetch = entries.compactMap({ idValue -> String? in
|
||||
if self.variant == .theOldReader {
|
||||
return "i=tag:google.com,2005:reader/item/\(idValue)"
|
||||
} else {
|
||||
guard let intValue = Int(idValue) else { return nil }
|
||||
let idHexString = String(format: "%.16llx", intValue)
|
||||
return "i=tag:google.com,2005:reader/item/\(idHexString)"
|
||||
}
|
||||
}).joined(separator:"&")
|
||||
|
||||
let actionIndicator = add ? "a" : "r"
|
||||
|
||||
let postData = "T=\(token)&\(idsToFetch)&\(actionIndicator)=\(state.rawValue)".data(using: String.Encoding.utf8)
|
||||
|
||||
try await transport.send(request: request, method: HTTPMethod.post, payload: postData!)
|
||||
}
|
||||
}
|
||||
29
ReaderAPI/Sources/ReaderAPI/ReaderAPIError.swift
Normal file
29
ReaderAPI/Sources/ReaderAPI/ReaderAPIError.swift
Normal file
@@ -0,0 +1,29 @@
|
||||
//
|
||||
// ReaderAPIError.swift
|
||||
//
|
||||
//
|
||||
// Created by Brent Simmons on 4/6/24.
|
||||
//
|
||||
|
||||
import Foundation
|
||||
|
||||
public enum ReaderAPIError: LocalizedError {
|
||||
|
||||
case unknown
|
||||
case invalidParameter
|
||||
case invalidResponse
|
||||
case urlNotFound
|
||||
|
||||
public var errorDescription: String? {
|
||||
switch self {
|
||||
case .unknown:
|
||||
return NSLocalizedString("An unexpected error occurred.", comment: "An unexpected error occurred.")
|
||||
case .invalidParameter:
|
||||
return NSLocalizedString("An invalid parameter was passed.", comment: "An invalid parameter was passed.")
|
||||
case .invalidResponse:
|
||||
return NSLocalizedString("There was an invalid response from the server.", comment: "There was an invalid response from the server.")
|
||||
case .urlNotFound:
|
||||
return NSLocalizedString("The API URL wasn't found.", comment: "The API URL wasn't found.")
|
||||
}
|
||||
}
|
||||
}
|
||||
55
ReaderAPI/Sources/ReaderAPI/URLRequest+ReaderAPI.swift
Normal file
55
ReaderAPI/Sources/ReaderAPI/URLRequest+ReaderAPI.swift
Normal file
@@ -0,0 +1,55 @@
|
||||
//
|
||||
// URLRequest+ReaderAPI.swift
|
||||
//
|
||||
//
|
||||
// Created by Brent Simmons on 4/6/24.
|
||||
//
|
||||
|
||||
import Foundation
|
||||
import Secrets
|
||||
import Web
|
||||
|
||||
extension URLRequest {
|
||||
|
||||
init(url: URL, readerAPICredentials: Credentials?, conditionalGet: HTTPConditionalGetInfo? = nil) {
|
||||
|
||||
self.init(url: url)
|
||||
|
||||
guard let credentials = readerAPICredentials else {
|
||||
return
|
||||
}
|
||||
|
||||
let credentialsType = credentials.type
|
||||
precondition(credentialsType == .readerBasic || credentialsType == .readerAPIKey)
|
||||
|
||||
if credentialsType == .readerBasic {
|
||||
|
||||
setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
|
||||
httpMethod = "POST"
|
||||
var postData = URLComponents()
|
||||
postData.queryItems = [
|
||||
URLQueryItem(name: "Email", value: credentials.username),
|
||||
URLQueryItem(name: "Passwd", value: credentials.secret)
|
||||
]
|
||||
httpBody = postData.enhancedPercentEncodedQuery?.data(using: .utf8)
|
||||
|
||||
} else if credentialsType == .readerAPIKey {
|
||||
|
||||
let auth = "GoogleLogin auth=\(credentials.secret)"
|
||||
setValue(auth, forHTTPHeaderField: HTTPRequestHeader.authorization)
|
||||
}
|
||||
|
||||
guard let conditionalGet = conditionalGet else {
|
||||
return
|
||||
}
|
||||
|
||||
// Bug seen in the wild: lastModified with last possible 32-bit date, which is in 2038. Ignore those.
|
||||
// TODO: drop this check in late 2037.
|
||||
if let lastModified = conditionalGet.lastModified, !lastModified.contains("2038") {
|
||||
setValue(lastModified, forHTTPHeaderField: HTTPRequestHeader.ifModifiedSince)
|
||||
}
|
||||
if let etag = conditionalGet.etag {
|
||||
setValue(etag, forHTTPHeaderField: HTTPRequestHeader.ifNoneMatch)
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user