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Convert several methods to async await.

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This commit is contained in:
Brent Simmons
2024-04-10 19:03:41 -07:00
parent 0a626b1904
commit bf4b751c76
3 changed files with 32 additions and 32 deletions
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37
Shared/HTMLMetadata/HTMLMetadataDownloader.swift
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@@ -10,34 +10,35 @@ import Foundation
import Web
import Parser
extension RSHTMLMetadata: @unchecked Sendable {}
struct HTMLMetadataDownloader {
static let serialDispatchQueue = DispatchQueue(label: "HTMLMetadataDownloader")
@MainActor static func downloadMetadata(for url: String) async -> RSHTMLMetadata? {
@MainActor static func downloadMetadata(for url: String, _ completion: @escaping @Sendable (RSHTMLMetadata?) -> Void) {
guard let actualURL = URL(unicodeString: url) else {
completion(nil)
return
return nil
}
downloadUsingCache(actualURL) { (data, response, error) in
if let data = data, !data.isEmpty, let response = response, response.statusIsOK, error == nil {
let urlToUse = response.url ?? actualURL
let parserData = ParserData(url: urlToUse.absoluteString, data: data)
parseMetadata(with: parserData, completion)
return
}
let downloadData = try? await downloadUsingCache(actualURL)
let data = downloadData?.data
let response = downloadData?.response
completion(nil)
if let data, !data.isEmpty, let response, response.statusIsOK {
let urlToUse = response.url ?? actualURL
let parserData = ParserData(url: urlToUse.absoluteString, data: data)
return await parseMetadata(with: parserData)
}
return nil
}
private static func parseMetadata(with parserData: ParserData, _ completion: @escaping @Sendable (RSHTMLMetadata?) -> Void) {
serialDispatchQueue.async {
let htmlMetadata = RSHTMLMetadataParser.htmlMetadata(with: parserData)
DispatchQueue.main.async {
completion(htmlMetadata)
}
@MainActor private static func parseMetadata(with parserData: ParserData) async -> RSHTMLMetadata? {
let task = Task.detached { () -> RSHTMLMetadata? in
RSHTMLMetadataParser.htmlMetadata(with: parserData)
}
return await task.value
}
}