NetNewsWire/Frameworks/Account/Feedly/Operations/FeedlySearchOperation.swift

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//
// FeedlySearchOperation.swift
// Account
//
// Created by Kiel Gillard on 1/12/19.
// Copyright © 2019 Ranchero Software, LLC. All rights reserved.
//
import Foundation
protocol FeedlySearchService: class {
func getFeeds(for query: String, count: Int, locale: String, completionHandler: @escaping (Result<FeedlyFeedsSearchResponse, Error>) -> ())
}
protocol FeedlySearchOperationDelegate: class {
func feedlySearchOperation(_ operation: FeedlySearchOperation, didGet response: FeedlyFeedsSearchResponse)
}
/// Single responsibility is to find one and only one feed for a given query (usually, a URL).
/// What happens when a feed is found for the URL is delegated to the `searchDelegate`.
class FeedlySearchOperation: FeedlyOperation {
let query: String
let locale: Locale
let searchService: FeedlySearchService
weak var searchDelegate: FeedlySearchOperationDelegate?
init(query: String, locale: Locale = .current, service: FeedlySearchService) {
self.query = query
self.locale = locale
self.searchService = service
}
override func main() {
guard !isCancelled else {
didFinish()
return
}
searchService.getFeeds(for: query, count: 1, locale: locale.identifier) { result in
switch result {
case .success(let response):
assert(Thread.isMainThread)
self.searchDelegate?.feedlySearchOperation(self, didGet: response)
self.didFinish()
case .failure(let error):
self.didFinish(error)
}
}
}
}