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69 lines
1.8 KiB
Swift
69 lines
1.8 KiB
Swift
//
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// FeedlyOrganiseParsedItemsByFeedOperation.swift
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// Account
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//
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// Created by Kiel Gillard on 20/9/19.
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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 RSParser
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import os.log
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protocol FeedlyParsedItemsByFeedProviding {
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var providerName: String { get }
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var parsedItemsKeyedByFeedId: [String: Set<ParsedItem>] { get }
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}
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/// Single responsibility is to group articles by their feeds.
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final class FeedlyOrganiseParsedItemsByFeedOperation: FeedlyOperation, FeedlyParsedItemsByFeedProviding {
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private let account: Account
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private let parsedItemProvider: FeedlyParsedItemProviding
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private let log: OSLog
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var parsedItemsKeyedByFeedId: [String : Set<ParsedItem>] {
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assert(Thread.isMainThread) // Needs to be on main thread because Feed is a main-thread-only model type.
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return itemsKeyedByFeedId
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}
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var providerName: String {
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return parsedItemProvider.resource.id
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}
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private var itemsKeyedByFeedId = [String: Set<ParsedItem>]()
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init(account: Account, parsedItemProvider: FeedlyParsedItemProviding, log: OSLog) {
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self.account = account
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self.parsedItemProvider = parsedItemProvider
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self.log = log
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}
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override func main() {
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defer { didFinish() }
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guard !isCancelled else { return }
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let items = parsedItemProvider.parsedEntries
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var dict = [String: Set<ParsedItem>](minimumCapacity: items.count)
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for item in items {
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let key = item.feedURL
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let value: Set<ParsedItem> = {
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if var items = dict[key] {
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items.insert(item)
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return items
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} else {
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return [item]
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}
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}()
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dict[key] = value
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guard !isCancelled else { return }
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}
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os_log(.debug, log: log, "Grouped %i items by %i feeds for %@", items.count, dict.count, parsedItemProvider.resource.id)
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itemsKeyedByFeedId = dict
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}
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}
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