NetNewsWire/Frameworks/Account/ReaderAPI/ReaderAPICaller.swift

936 lines
28 KiB
Swift

//
// ReaderAPICaller.swift
// Account
//
// Created by Jeremy Beker on 5/28/19.
// Copyright © 2019 Ranchero Software, LLC. All rights reserved.
//
import Foundation
import RSWeb
import Secrets
enum CreateReaderAPISubscriptionResult {
case created(ReaderAPISubscription)
case alreadySubscribed
case notFound
}
final class ReaderAPICaller: NSObject {
struct ConditionalGetKeys {
static let subscriptions = "subscriptions"
static let tags = "tags"
static let taggings = "taggings"
static let icons = "icons"
static let unreadEntries = "unreadEntries"
static let starredEntries = "starredEntries"
}
enum ReaderState: String {
case read = "user/-/state/com.google/read"
case starred = "user/-/state/com.google/starred"
}
enum ReaderStreams: String {
case readingList = "user/-/state/com.google/reading-list"
}
enum ReaderAPIEndpoints: String {
case login = "/accounts/ClientLogin"
case token = "/reader/api/0/token"
case disableTag = "/reader/api/0/disable-tag"
case renameTag = "/reader/api/0/rename-tag"
case tagList = "/reader/api/0/tag/list"
case subscriptionList = "/reader/api/0/subscription/list"
case subscriptionEdit = "/reader/api/0/subscription/edit"
case subscriptionAdd = "/reader/api/0/subscription/quickadd"
case contents = "/reader/api/0/stream/items/contents"
case itemIds = "/reader/api/0/stream/items/ids"
case editTag = "/reader/api/0/edit-tag"
}
private var transport: Transport!
var credentials: Credentials?
private var accessToken: String?
weak var accountMetadata: AccountMetadata?
var server: String? {
get {
return APIBaseURL?.host
}
}
private var APIBaseURL: URL? {
get {
guard let accountMetadata = accountMetadata else {
return nil
}
return accountMetadata.endpointURL
}
}
init(transport: Transport) {
super.init()
self.transport = transport
}
func cancelAll() {
transport.cancelAll()
}
func validateCredentials(endpoint: URL, completion: @escaping (Result<Credentials?, Error>) -> Void) {
guard let credentials = credentials else {
completion(.failure(CredentialsError.incompleteCredentials))
return
}
let request = URLRequest(url: endpoint.appendingPathComponent(ReaderAPIEndpoints.login.rawValue), credentials: credentials)
transport.send(request: request) { result in
switch result {
case .success(let (_, data)):
guard let resultData = data else {
completion(.failure(TransportError.noData))
break
}
// Convert the return data to UTF8 and then parse out the Auth token
guard let rawData = String(data: resultData, encoding: .utf8) else {
completion(.failure(TransportError.noData))
break
}
var authData: [String: String] = [:]
rawData.split(separator: "\n").forEach({ (line: Substring) in
let items = line.split(separator: "=").map{String($0)}
authData[items[0]] = items[1]
})
guard let authString = authData["Auth"] else {
completion(.failure(CredentialsError.incompleteCredentials))
break
}
// Save Auth Token for later use
self.credentials = Credentials(type: .readerAPIKey, username: credentials.username, secret: authString)
completion(.success(self.credentials))
case .failure(let error):
completion(.failure(error))
}
}
}
func requestAuthorizationToken(endpoint: URL, completion: @escaping (Result<String, Error>) -> Void) {
// If we have a token already, use it
if let accessToken = accessToken {
completion(.success(accessToken))
return
}
// Otherwise request one.
guard let credentials = credentials else {
completion(.failure(CredentialsError.incompleteCredentials))
return
}
let request = URLRequest(url: endpoint.appendingPathComponent(ReaderAPIEndpoints.token.rawValue), credentials: credentials)
transport.send(request: request) { result in
switch result {
case .success(let (_, data)):
guard let resultData = data else {
completion(.failure(TransportError.noData))
break
}
// Convert the return data to UTF8 and then parse out the Auth token
guard let accessToken = String(data: resultData, encoding: .utf8) else {
completion(.failure(TransportError.noData))
break
}
self.accessToken = accessToken
completion(.success(accessToken))
case .failure(let error):
completion(.failure(error))
}
}
}
func retrieveTags(completion: @escaping (Result<[ReaderAPITag]?, Error>) -> Void) {
guard let baseURL = APIBaseURL else {
completion(.failure(CredentialsError.incompleteCredentials))
return
}
let url = baseURL
.appendingPathComponent(ReaderAPIEndpoints.tagList.rawValue)
.appendingQueryItem(URLQueryItem(name: "output", value: "json"))
guard let callURL = url else {
completion(.failure(TransportError.noURL))
return
}
let conditionalGet = accountMetadata?.conditionalGetInfo[ConditionalGetKeys.tags]
let request = URLRequest(url: callURL, credentials: credentials, conditionalGet: conditionalGet)
transport.send(request: request, resultType: ReaderAPITagContainer.self) { result in
switch result {
case .success(let (response, wrapper)):
self.storeConditionalGet(key: ConditionalGetKeys.tags, headers: response.allHeaderFields)
completion(.success(wrapper?.tags))
case .failure(let error):
completion(.failure(error))
}
}
}
func renameTag(oldName: String, newName: String, completion: @escaping (Result<Void, Error>) -> Void) {
guard let baseURL = APIBaseURL else {
completion(.failure(CredentialsError.incompleteCredentials))
return
}
self.requestAuthorizationToken(endpoint: baseURL) { (result) in
switch result {
case .success(let token):
var request = URLRequest(url: baseURL.appendingPathComponent(ReaderAPIEndpoints.renameTag.rawValue), credentials: self.credentials)
request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
request.httpMethod = "POST"
let oldTagName = "user/-/label/\(oldName)"
let newTagName = "user/-/label/\(newName)"
let postData = "T=\(token)&s=\(oldTagName)&dest=\(newTagName)".data(using: String.Encoding.utf8)
self.transport.send(request: request, method: HTTPMethod.post, payload: postData!, completion: { (result) in
switch result {
case .success:
completion(.success(()))
break
case .failure(let error):
completion(.failure(error))
break
}
})
case .failure(let error):
completion(.failure(error))
}
}
}
func deleteTag(name: String, completion: @escaping (Result<Void, Error>) -> Void) {
guard let baseURL = APIBaseURL else {
completion(.failure(CredentialsError.incompleteCredentials))
return
}
self.requestAuthorizationToken(endpoint: baseURL) { (result) in
switch result {
case .success(let token):
var request = URLRequest(url: baseURL.appendingPathComponent(ReaderAPIEndpoints.disableTag.rawValue), credentials: self.credentials)
request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
request.httpMethod = "POST"
let tagName = "user/-/label/\(name)"
let postData = "T=\(token)&s=\(tagName)".data(using: String.Encoding.utf8)
self.transport.send(request: request, method: HTTPMethod.post, payload: postData!, completion: { (result) in
switch result {
case .success:
completion(.success(()))
break
case .failure(let error):
completion(.failure(error))
break
}
})
case .failure(let error):
completion(.failure(error))
}
}
}
func retrieveSubscriptions(completion: @escaping (Result<[ReaderAPISubscription]?, Error>) -> Void) {
guard let baseURL = APIBaseURL else {
completion(.failure(CredentialsError.incompleteCredentials))
return
}
let url = baseURL
.appendingPathComponent(ReaderAPIEndpoints.subscriptionList.rawValue)
.appendingQueryItem(URLQueryItem(name: "output", value: "json"))
guard let callURL = url else {
completion(.failure(TransportError.noURL))
return
}
let conditionalGet = accountMetadata?.conditionalGetInfo[ConditionalGetKeys.subscriptions]
let request = URLRequest(url: callURL, credentials: credentials, conditionalGet: conditionalGet)
transport.send(request: request, resultType: ReaderAPISubscriptionContainer.self) { result in
switch result {
case .success(let (response, container)):
self.storeConditionalGet(key: ConditionalGetKeys.subscriptions, headers: response.allHeaderFields)
completion(.success(container?.subscriptions))
case .failure(let error):
completion(.failure(error))
}
}
}
func createSubscription(url: String, completion: @escaping (Result<CreateReaderAPISubscriptionResult, Error>) -> Void) {
guard let baseURL = APIBaseURL else {
completion(.failure(CredentialsError.incompleteCredentials))
return
}
guard let url = URL(string: url) else {
completion(.failure(LocalAccountDelegateError.invalidParameter))
return
}
FeedFinder.find(url: url) { result in
switch result {
case .success(let feedSpecifiers):
guard let bestFeedSpecifier = FeedSpecifier.bestFeed(in: feedSpecifiers),
let url = URL(string: bestFeedSpecifier.urlString) else {
completion(.failure(AccountError.createErrorNotFound))
return
}
self.requestAuthorizationToken(endpoint: baseURL) { (result) in
switch result {
case .success(let token):
let url = baseURL
.appendingPathComponent(ReaderAPIEndpoints.subscriptionAdd.rawValue)
.appendingQueryItem(URLQueryItem(name: "quickadd", value: url.absoluteString))
guard let callURL = url else {
completion(.failure(TransportError.noURL))
return
}
var request = URLRequest(url: callURL, credentials: self.credentials)
request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
request.httpMethod = "POST"
let postData = "T=\(token)".data(using: String.Encoding.utf8)
self.transport.send(request: request, method: HTTPMethod.post, data: postData!, resultType: ReaderAPIQuickAddResult.self, completion: { (result) in
switch result {
case .success(let (_, subResult)):
switch subResult?.numResults {
case 0:
completion(.success(.alreadySubscribed))
default:
// We have a feed ID but need to get feed information
guard let streamId = subResult?.streamId else {
completion(.failure(AccountError.createErrorNotFound))
return
}
// There is no call to get a single subscription entry, so we get them all,
// look up the one we just subscribed to and return that
self.retrieveSubscriptions(completion: { (result) in
switch result {
case .success(let subscriptions):
guard let subscriptions = subscriptions else {
completion(.failure(AccountError.createErrorNotFound))
return
}
let newStreamId = "feed/\(streamId)"
guard let subscription = subscriptions.first(where: { (sub) -> Bool in
sub.feedID == newStreamId
}) else {
completion(.failure(AccountError.createErrorNotFound))
return
}
completion(.success(.created(subscription)))
case .failure(let error):
completion(.failure(error))
}
})
}
case .failure(let error):
completion(.failure(error))
}
})
case .failure(let error):
completion(.failure(error))
}
}
case .failure:
completion(.failure(AccountError.createErrorNotFound))
}
}
//
}
func renameSubscription(subscriptionID: String, newName: String, completion: @escaping (Result<Void, Error>) -> Void) {
guard let baseURL = APIBaseURL else {
completion(.failure(CredentialsError.incompleteCredentials))
return
}
self.requestAuthorizationToken(endpoint: baseURL) { (result) in
switch result {
case .success(let token):
var request = URLRequest(url: baseURL.appendingPathComponent(ReaderAPIEndpoints.subscriptionEdit.rawValue), credentials: self.credentials)
request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
request.httpMethod = "POST"
let postData = "T=\(token)&s=\(subscriptionID)&ac=edit&t=\(newName)".data(using: String.Encoding.utf8)
self.transport.send(request: request, method: HTTPMethod.post, payload: postData!, completion: { (result) in
switch result {
case .success:
completion(.success(()))
break
case .failure(let error):
completion(.failure(error))
break
}
})
case .failure(let error):
completion(.failure(error))
}
}
}
func deleteSubscription(subscriptionID: String, completion: @escaping (Result<Void, Error>) -> Void) {
guard let baseURL = APIBaseURL else {
completion(.failure(CredentialsError.incompleteCredentials))
return
}
self.requestAuthorizationToken(endpoint: baseURL) { (result) in
switch result {
case .success(let token):
var request = URLRequest(url: baseURL.appendingPathComponent(ReaderAPIEndpoints.subscriptionEdit.rawValue), credentials: self.credentials)
request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
request.httpMethod = "POST"
let postData = "T=\(token)&s=\(subscriptionID)&ac=unsubscribe".data(using: String.Encoding.utf8)
self.transport.send(request: request, method: HTTPMethod.post, payload: postData!, completion: { (result) in
switch result {
case .success:
completion(.success(()))
break
case .failure(let error):
completion(.failure(error))
break
}
})
case .failure(let error):
completion(.failure(error))
}
}
}
func createTagging(subscriptionID: String, tagName: String, completion: @escaping (Result<Void, Error>) -> Void) {
guard let baseURL = APIBaseURL else {
completion(.failure(CredentialsError.incompleteCredentials))
return
}
self.requestAuthorizationToken(endpoint: baseURL) { (result) in
switch result {
case .success(let token):
var request = URLRequest(url: baseURL.appendingPathComponent(ReaderAPIEndpoints.subscriptionEdit.rawValue), credentials: self.credentials)
request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
request.httpMethod = "POST"
let tagName = "user/-/label/\(tagName)"
let postData = "T=\(token)&s=\(subscriptionID)&ac=edit&a=\(tagName)".data(using: String.Encoding.utf8)
self.transport.send(request: request, method: HTTPMethod.post, payload: postData!, completion: { (result) in
switch result {
case .success:
completion(.success(()))
break
case .failure(let error):
completion(.failure(error))
break
}
})
case .failure(let error):
completion(.failure(error))
}
}
}
func deleteTagging(subscriptionID: String, tagName: String, completion: @escaping (Result<Void, Error>) -> Void) {
guard let baseURL = APIBaseURL else {
completion(.failure(CredentialsError.incompleteCredentials))
return
}
self.requestAuthorizationToken(endpoint: baseURL) { (result) in
switch result {
case .success(let token):
var request = URLRequest(url: baseURL.appendingPathComponent(ReaderAPIEndpoints.subscriptionEdit.rawValue), credentials: self.credentials)
request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
request.httpMethod = "POST"
let tagName = "user/-/label/\(tagName)"
let postData = "T=\(token)&s=\(subscriptionID)&ac=edit&r=\(tagName)".data(using: String.Encoding.utf8)
self.transport.send(request: request, method: HTTPMethod.post, payload: postData!, completion: { (result) in
switch result {
case .success:
completion(.success(()))
break
case .failure(let error):
completion(.failure(error))
break
}
})
case .failure(let error):
completion(.failure(error))
}
}
}
func retrieveEntries(articleIDs: [String], completion: @escaping (Result<([ReaderAPIEntry]?), Error>) -> Void) {
guard !articleIDs.isEmpty else {
completion(.success(([ReaderAPIEntry]())))
return
}
guard let baseURL = APIBaseURL else {
completion(.failure(CredentialsError.incompleteCredentials))
return
}
self.requestAuthorizationToken(endpoint: baseURL) { (result) in
switch result {
case .success(let token):
// Do POST asking for data about all the new articles
var request = URLRequest(url: baseURL.appendingPathComponent(ReaderAPIEndpoints.contents.rawValue), credentials: self.credentials)
request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
request.httpMethod = "POST"
// Get ids from above into hex representation of value
let idsToFetch = articleIDs.map({ (reference) -> String in
return "i=\(reference)"
}).joined(separator:"&")
let postData = "T=\(token)&output=json&\(idsToFetch)".data(using: String.Encoding.utf8)
self.transport.send(request: request, method: HTTPMethod.post, data: postData!, resultType: ReaderAPIEntryWrapper.self, completion: { (result) in
switch result {
case .success(let (_, entryWrapper)):
guard let entryWrapper = entryWrapper else {
completion(.failure(ReaderAPIAccountDelegateError.invalidResponse))
return
}
completion(.success((entryWrapper.entries)))
case .failure(let error):
completion(.failure(error))
}
})
case .failure(let error):
completion(.failure(error))
}
}
}
func retrieveEntries(webFeedID: String, completion: @escaping (Result<([ReaderAPIEntry]?, String?), Error>) -> Void) {
let since = Calendar.current.date(byAdding: .month, value: -3, to: Date()) ?? Date()
guard let baseURL = APIBaseURL else {
completion(.failure(CredentialsError.incompleteCredentials))
return
}
let url = baseURL
.appendingPathComponent(ReaderAPIEndpoints.itemIds.rawValue)
.appendingQueryItems([
URLQueryItem(name: "s", value: webFeedID),
URLQueryItem(name: "ot", value: String(since.timeIntervalSince1970)),
URLQueryItem(name: "output", value: "json")
])
guard let callURL = url else {
completion(.failure(TransportError.noURL))
return
}
let request = URLRequest(url: callURL, credentials: credentials, conditionalGet: nil)
transport.send(request: request, resultType: ReaderAPIReferenceWrapper.self) { result in
switch result {
case .success(let (_, unreadEntries)):
guard let itemRefs = unreadEntries?.itemRefs else {
completion(.success(([], nil)))
return
}
let itemIds = itemRefs.map { (reference) -> String in
// Convert the IDs to the (stupid) Google Hex Format
let idValue = Int(reference.itemId)!
return String(idValue, radix: 16, uppercase: false)
}
self.retrieveEntries(articleIDs: itemIds) { (results) in
switch results {
case .success(let entries):
completion(.success((entries,nil)))
case .failure(let error):
completion(.failure(error))
}
}
case .failure(let error):
completion(.failure(error))
}
}
}
func retrieveEntries(completion: @escaping (Result<([ReaderAPIEntry]?, String?, Int?), Error>) -> Void) {
guard let baseURL = APIBaseURL else {
completion(.failure(CredentialsError.incompleteCredentials))
return
}
let since: Date = {
if let lastArticleFetch = self.accountMetadata?.lastArticleFetchStartTime {
return lastArticleFetch
} else {
return Calendar.current.date(byAdding: .month, value: -3, to: Date()) ?? Date()
}
}()
let sinceString = since.timeIntervalSince1970
let url = baseURL
.appendingPathComponent(ReaderAPIEndpoints.itemIds.rawValue)
.appendingQueryItems([
URLQueryItem(name: "o", value: String(sinceString)),
URLQueryItem(name: "n", value: "10000"),
URLQueryItem(name: "output", value: "json"),
URLQueryItem(name: "xt", value: ReaderState.read.rawValue),
URLQueryItem(name: "s", value: ReaderStreams.readingList.rawValue)
])
guard let callURL = url else {
completion(.failure(TransportError.noURL))
return
}
let conditionalGet = accountMetadata?.conditionalGetInfo[ConditionalGetKeys.unreadEntries]
let request = URLRequest(url: callURL, credentials: credentials, conditionalGet: conditionalGet)
self.transport.send(request: request, resultType: ReaderAPIReferenceWrapper.self) { result in
switch result {
case .success(let (_, entries)):
guard let entries = entries else {
completion(.failure(ReaderAPIAccountDelegateError.invalidResponse))
return
}
self.requestAuthorizationToken(endpoint: baseURL) { (result) in
switch result {
case .success(let token):
// Do POST asking for data about all the new articles
var request = URLRequest(url: baseURL.appendingPathComponent(ReaderAPIEndpoints.contents.rawValue), credentials: self.credentials)
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.itemRefs.map({ (reference) -> String in
let idValue = Int(reference.itemId)!
let idHexString = String(idValue, radix: 16, uppercase: false)
return "i=\(idHexString)"
}).joined(separator:"&")
let postData = "T=\(token)&output=json&\(idsToFetch)".data(using: String.Encoding.utf8)
self.transport.send(request: request, method: HTTPMethod.post, data: postData!, resultType: ReaderAPIEntryWrapper.self, completion: { (result) in
switch result {
case .success(let (response, entryWrapper)):
guard let entryWrapper = entryWrapper else {
completion(.failure(ReaderAPIAccountDelegateError.invalidResponse))
return
}
let dateInfo = HTTPDateInfo(urlResponse: response)
self.accountMetadata?.lastArticleFetchStartTime = dateInfo?.date
self.accountMetadata?.lastArticleFetchEndTime = Date()
completion(.success((entryWrapper.entries, nil, nil)))
case .failure(let error):
completion(.failure(error))
}
})
case .failure(let error):
completion(.failure(error))
}
}
case .failure(let error):
self.accountMetadata?.lastArticleFetchStartTime = nil
completion(.failure(error))
}
}
}
func retrieveEntries(page: String, completion: @escaping (Result<([ReaderAPIEntry]?, String?), Error>) -> Void) {
guard let url = URL(string: page)?.appendingQueryItem(URLQueryItem(name: "mode", value: "extended")) else {
completion(.success((nil, nil)))
return
}
let request = URLRequest(url: url, credentials: credentials)
transport.send(request: request, resultType: [ReaderAPIEntry].self) { result in
switch result {
case .success(let (response, entries)):
let pagingInfo = HTTPLinkPagingInfo(urlResponse: response)
completion(.success((entries, pagingInfo.nextPage)))
case .failure(let error):
self.accountMetadata?.lastArticleFetchStartTime = nil
completion(.failure(error))
}
}
}
func retrieveUnreadEntries(completion: @escaping (Result<[Int]?, Error>) -> Void) {
guard let baseURL = APIBaseURL else {
completion(.failure(CredentialsError.incompleteCredentials))
return
}
let url = baseURL
.appendingPathComponent(ReaderAPIEndpoints.itemIds.rawValue)
.appendingQueryItems([
URLQueryItem(name: "s", value: ReaderStreams.readingList.rawValue),
URLQueryItem(name: "n", value: "10000"),
URLQueryItem(name: "xt", value: ReaderState.read.rawValue),
URLQueryItem(name: "output", value: "json")
])
guard let callURL = url else {
completion(.failure(TransportError.noURL))
return
}
let conditionalGet = accountMetadata?.conditionalGetInfo[ConditionalGetKeys.unreadEntries]
let request = URLRequest(url: callURL, credentials: credentials, conditionalGet: conditionalGet)
transport.send(request: request, resultType: ReaderAPIReferenceWrapper.self) { result in
switch result {
case .success(let (response, unreadEntries)):
guard let itemRefs = unreadEntries?.itemRefs else {
completion(.success([]))
return
}
let itemIds = itemRefs.map{ Int($0.itemId)! }
self.storeConditionalGet(key: ConditionalGetKeys.unreadEntries, headers: response.allHeaderFields)
completion(.success(itemIds))
case .failure(let error):
completion(.failure(error))
}
}
}
func updateStateToEntries(entries: [Int], state: ReaderState, add: Bool, completion: @escaping (Result<Void, Error>) -> Void) {
guard let baseURL = APIBaseURL else {
completion(.failure(CredentialsError.incompleteCredentials))
return
}
self.requestAuthorizationToken(endpoint: baseURL) { (result) in
switch result {
case .success(let token):
// Do POST asking for data about all the new articles
var request = URLRequest(url: baseURL.appendingPathComponent(ReaderAPIEndpoints.editTag.rawValue), credentials: self.credentials)
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.map({ (idValue) -> String in
let idHexString = String(format: "%.16llx", idValue)
return "i=\(idHexString)"
}).joined(separator:"&")
let actionIndicator = add ? "a" : "r"
let postData = "T=\(token)&\(idsToFetch)&\(actionIndicator)=\(state.rawValue)".data(using: String.Encoding.utf8)
self.transport.send(request: request, method: HTTPMethod.post, payload: postData!, completion: { (result) in
switch result {
case .success:
completion(.success(()))
case .failure(let error):
completion(.failure(error))
}
})
case .failure(let error):
completion(.failure(error))
}
}
}
func createUnreadEntries(entries: [Int], completion: @escaping (Result<Void, Error>) -> Void) {
updateStateToEntries(entries: entries, state: .read, add: false, completion: completion)
}
func deleteUnreadEntries(entries: [Int], completion: @escaping (Result<Void, Error>) -> Void) {
updateStateToEntries(entries: entries, state: .read, add: true, completion: completion)
}
func createStarredEntries(entries: [Int], completion: @escaping (Result<Void, Error>) -> Void) {
updateStateToEntries(entries: entries, state: .starred, add: true, completion: completion)
}
func deleteStarredEntries(entries: [Int], completion: @escaping (Result<Void, Error>) -> Void) {
updateStateToEntries(entries: entries, state: .starred, add: false, completion: completion)
}
func retrieveStarredEntries(completion: @escaping (Result<[Int]?, Error>) -> Void) {
guard let baseURL = APIBaseURL else {
completion(.failure(CredentialsError.incompleteCredentials))
return
}
let url = baseURL
.appendingPathComponent(ReaderAPIEndpoints.itemIds.rawValue)
.appendingQueryItems([
URLQueryItem(name: "s", value: "user/-/state/com.google/starred"),
URLQueryItem(name: "n", value: "10000"),
URLQueryItem(name: "output", value: "json")
])
guard let callURL = url else {
completion(.failure(TransportError.noURL))
return
}
let conditionalGet = accountMetadata?.conditionalGetInfo[ConditionalGetKeys.starredEntries]
let request = URLRequest(url: callURL, credentials: credentials, conditionalGet: conditionalGet)
transport.send(request: request, resultType: ReaderAPIReferenceWrapper.self) { result in
switch result {
case .success(let (response, unreadEntries)):
guard let itemRefs = unreadEntries?.itemRefs else {
completion(.success([]))
return
}
let itemIds = itemRefs.map{ Int($0.itemId)! }
self.storeConditionalGet(key: ConditionalGetKeys.starredEntries, headers: response.allHeaderFields)
completion(.success(itemIds))
case .failure(let error):
completion(.failure(error))
}
}
}
}
// MARK: Private
extension ReaderAPICaller {
func storeConditionalGet(key: String, headers: [AnyHashable : Any]) {
if var conditionalGet = accountMetadata?.conditionalGetInfo {
conditionalGet[key] = HTTPConditionalGetInfo(headers: headers)
accountMetadata?.conditionalGetInfo = conditionalGet
}
}
}