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Merge pull request #103 from dirtyhenry/docs
Document and demo Transport
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102 changes: 102 additions & 0 deletions
102
Examples/BlocksApp/BlocksApp/Features/TransportDemoView.swift
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| import Blocks | ||
| import SwiftUI | ||
|
|
||
| class DummyJSONClient { | ||
| static let defaultTransport: Transport = RetryTransport( | ||
| wrapping: StatusCodeCheckingTransport( | ||
| wrapping: LoggingTransport( | ||
| wrapping: URLSession.shared, | ||
| subsystem: "net.mickf.blocks" | ||
| ) | ||
| ) | ||
| ) | ||
|
|
||
| enum RandomQuote { | ||
| struct Response: Codable { | ||
| let id: Int | ||
| let quote: String | ||
| let author: String | ||
| } | ||
| } | ||
|
|
||
| func randomQuote() async throws -> Endpoint<RandomQuote.Response> { | ||
| let url = try URL.dummyJSONURLComponents(path: "/quotes/random") | ||
| return Endpoint(json: .get, url: url) | ||
| } | ||
| } | ||
|
|
||
| extension URL { | ||
| static func dummyJSONURLComponents(path: String) throws -> URL { | ||
| var urlComponents = URLComponents() | ||
| urlComponents.scheme = "https" | ||
| urlComponents.host = "dummyjson.com" | ||
| urlComponents.path = path | ||
|
|
||
| guard let url = urlComponents.url else { | ||
| throw TransportError.unmetURLComponentsRequirements | ||
| } | ||
|
|
||
| return url | ||
| } | ||
| } | ||
|
|
||
| struct TransportDemoView: View { | ||
| let readme: LocalizedStringKey = """ | ||
| A `Transport` can compose behaviors dealing with URL requests. | ||
| The one demoed here will: | ||
| 1. **Load data** from the internet (`URLSession.shared`); | ||
| 2. **Log requests** and responses to OSLog (`LoggingTransport`); | ||
| 3. **Throw** if the status code is an error one (`StatusCodeCheckingTransport`); | ||
| 4. **Retry** the request if it failed a couple of times (`RetryTransport`). | ||
| """ | ||
|
|
||
| @State var taskState: TaskState = .notStarted | ||
| @State var quote: String? | ||
| @State var author: String? | ||
|
|
||
| var body: some View { | ||
| VStack(spacing: 32) { | ||
| VStack(alignment: .leading) { | ||
| Text(readme) | ||
| }.frame(maxWidth: .infinity, alignment: .leading) | ||
| Divider() | ||
| TaskStateButton( | ||
| "Load quote", | ||
| runningTitleKey: "Loading quote…", | ||
| action: { | ||
| Task { | ||
| do { | ||
| taskState = .running | ||
| let quoteResponse = try await DummyJSONClient.defaultTransport.load( | ||
| DummyJSONClient().randomQuote() | ||
| ) | ||
| taskState = .completed | ||
| quote = quoteResponse.quote | ||
| author = quoteResponse.author | ||
| } catch { | ||
| taskState = .failed(errorDescription: error.localizedDescription) | ||
| } | ||
| } | ||
| }, | ||
| disabledWhenCompleted: false, | ||
| state: taskState | ||
| ) | ||
| .buttonStyle(.borderedProminent) | ||
| .padding(32) | ||
| VStack { | ||
| Text(quote ?? "") | ||
| Text(author ?? "") | ||
| .font(.caption) | ||
| } | ||
| Spacer() | ||
| } | ||
| .padding() | ||
| .navigationTitle("Transport Demo") | ||
| } | ||
| } | ||
|
|
||
| #Preview { | ||
| TransportDemoView() | ||
| } |
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