72 lines
2.0 KiB
Swift
72 lines
2.0 KiB
Swift
//
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// FeedlyIngestStreamArticleIdsOperation.swift
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// Account
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//
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// Created by Kiel Gillard on 9/1/20.
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// Copyright © 2020 Ranchero Software, LLC. All rights reserved.
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//
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import Foundation
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import os.log
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/// Ensure a status exists for every article id the user might be interested in.
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///
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/// Typically, it pages through the article ids of the global.all stream.
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/// As the article ids are collected, a default read status is created for each.
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/// So this operation has side effects *for the entire account* it operates on.
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class FeedlyIngestStreamArticleIdsOperation: FeedlyOperation {
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private let account: Account
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private let resource: FeedlyResourceId
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private let service: FeedlyGetStreamIdsService
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private let log: OSLog
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init(account: Account, resource: FeedlyResourceId, service: FeedlyGetStreamIdsService, log: OSLog) {
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self.account = account
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self.resource = resource
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self.service = service
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self.log = log
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}
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convenience init(account: Account, credentials: Credentials, service: FeedlyGetStreamIdsService, log: OSLog) {
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let all = FeedlyCategoryResourceId.Global.all(for: credentials.username)
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self.init(account: account, resource: all, service: service, log: log)
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}
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override func run() {
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getStreamIds(nil)
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}
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private func getStreamIds(_ continuation: String?) {
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service.getStreamIds(for: resource, continuation: continuation, newerThan: nil, unreadOnly: nil, completion: didGetStreamIds(_:))
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}
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private func didGetStreamIds(_ result: Result<FeedlyStreamIds, Error>) {
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guard !isCanceled else {
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didFinish()
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return
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}
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switch result {
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case .success(let streamIds):
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account.createStatusesIfNeeded(articleIDs: Set(streamIds.ids)) { databaseError in
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if let error = databaseError {
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self.didFinish(with: error)
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return
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}
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guard let continuation = streamIds.continuation else {
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os_log(.debug, log: self.log, "Reached end of stream for %@", self.resource.id)
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self.didFinish()
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return
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}
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self.getStreamIds(continuation)
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}
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case .failure(let error):
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didFinish(with: error)
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}
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}
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}
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