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Support Swift Combine #7

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87 changes: 87 additions & 0 deletions Sources/StackNetwork/Combine/NetworkProvider+Combine.swift
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Original file line number Diff line number Diff line change
@@ -0,0 +1,87 @@
import Foundation
import UIKit

#if canImport(Combine)
import Combine

@available(iOS 13.0, *)
extension NetworkProvider {

/// Retuns a publisher to execute a network-request with given target.
public func requestPublisher(_ target: Target, callbackQueue: DispatchQueue? = nil) -> AnyPublisher<Response, Error> {
var requestToken: StackNetwork.Cancellable?
return Deferred {
Future<Response, Error> { promise in
requestToken = self.request(target, callbackQueue: callbackQueue, completion: promise)
}
.handleEvents(
receiveCancel: {
requestToken?.cancel()
}
)
}
.eraseToAnyPublisher()
}
}

@available(iOS 13.0, *)
extension Publisher where Output == StackNetwork.Response {

/// Maps response' data into a Decodable object.
public func map<D: Decodable>(
_ type: D.Type,
atKeyPath path: String? = nil,
using decoder: JSONDecoder = JSONDecoder(),
failsOnEmptyData: Bool = true)
-> AnyPublisher<D, Error> {

tryMap {
try $0.map(D.self, atKeyPath: path, using: decoder, failsOnEmptyData: failsOnEmptyData)
}
.eraseToAnyPublisher()
}

/// Maps response's data into a JSON object.
public func mapJSON(failsOnEmptyData: Bool = true) -> AnyPublisher<JSON, Error> {
tryMap {
try $0.mapJSON(failsOnEmptyData: failsOnEmptyData)
}
.eraseToAnyPublisher()
}

/// Maps response's data into an image.
public func mapImage() -> AnyPublisher<UIImage, Error> {
tryMap {
try $0.mapImage()
}
.eraseToAnyPublisher()
}
}

@available(iOS 13.0, *)
extension Publisher where Output == StackNetwork.Response {

/// Filters out response with status code that falls within the given range.
public func filter<R: RangeExpression>(statusCodes: R) -> AnyPublisher<Response, Error> where R.Bound == Int {
tryMap {
try $0.filter(statusCodes: statusCodes)
}
.eraseToAnyPublisher()
}

/// Filters out response with status code that matches the given code.
public func filter(statusCode: Int) -> AnyPublisher<Response, Error> {
filter(statusCodes: statusCode...statusCode)
}

/// Filters out response with successful status codes, range 200 - 299.
public func filterSuccessfulStatusCodes() -> AnyPublisher<Response, Error> {
filter(statusCodes: 200...299)
}

/// Filters out response with successful and redirect status codes, range 200 - 399.
public func filterSuccessfulStatusAndRedirectCodes() -> AnyPublisher<Response, Error> {
filter(statusCodes: 200...399)
}
}
#endif
1 change: 0 additions & 1 deletion Sources/StackNetwork/Source/JSONDecoder+KeyPath.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -89,7 +89,6 @@ extension JSONDecoder {
do {
return try self.decode(type, from: data)
} catch {
NSLog("MMM Shit - \(error)")
return nil
}
}.first
Expand Down
16 changes: 16 additions & 0 deletions StackNetwork.xcodeproj/project.pbxproj
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,8 @@
3A24D7C423C674C800EDC931 /* Aliases.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3A24D7C323C674C800EDC931 /* Aliases.swift */; };
3A24D7C723C67C3200EDC931 /* MultiTarget.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3A24D7C623C67C3200EDC931 /* MultiTarget.swift */; };
3A2EBCDD23EDDB440051E223 /* PluginType.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3A2EBCDC23EDDB440051E223 /* PluginType.swift */; };
3A5E8EF32777B3F300E03A05 /* NetworkProvider+Combine.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3A5E8EF22777B3F300E03A05 /* NetworkProvider+Combine.swift */; };
3A5E8EF52777B40400E03A05 /* NetworkProviderPublisherSpec.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3A5E8EF42777B40400E03A05 /* NetworkProviderPublisherSpec.swift */; };
3A61F49223AE1F4200A8E47C /* StackNetwork.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 3A61F48823AE1F4200A8E47C /* StackNetwork.framework */; };
3A61F49923AE1F4200A8E47C /* StackNetwork.h in Headers */ = {isa = PBXBuildFile; fileRef = 3A61F48B23AE1F4200A8E47C /* StackNetwork.h */; settings = {ATTRIBUTES = (Public, ); }; };
3A61F4A423AE277400A8E47C /* NetworkProviderType.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3A61F4A323AE277400A8E47C /* NetworkProviderType.swift */; };
Expand Down Expand Up @@ -67,6 +69,8 @@
3A24D7C323C674C800EDC931 /* Aliases.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Aliases.swift; sourceTree = "<group>"; };
3A24D7C623C67C3200EDC931 /* MultiTarget.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MultiTarget.swift; sourceTree = "<group>"; };
3A2EBCDC23EDDB440051E223 /* PluginType.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = PluginType.swift; sourceTree = "<group>"; };
3A5E8EF22777B3F300E03A05 /* NetworkProvider+Combine.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = "NetworkProvider+Combine.swift"; sourceTree = "<group>"; };
3A5E8EF42777B40400E03A05 /* NetworkProviderPublisherSpec.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = NetworkProviderPublisherSpec.swift; sourceTree = "<group>"; };
3A61F48823AE1F4200A8E47C /* StackNetwork.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = StackNetwork.framework; sourceTree = BUILT_PRODUCTS_DIR; };
3A61F48B23AE1F4200A8E47C /* StackNetwork.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = StackNetwork.h; sourceTree = "<group>"; };
3A61F48C23AE1F4200A8E47C /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
Expand Down Expand Up @@ -160,6 +164,14 @@
path = Source;
sourceTree = "<group>";
};
3A5E8EF12777B3F300E03A05 /* Combine */ = {
isa = PBXGroup;
children = (
3A5E8EF22777B3F300E03A05 /* NetworkProvider+Combine.swift */,
);
path = Combine;
sourceTree = "<group>";
};
3A61F47E23AE1F4200A8E47C = {
isa = PBXGroup;
children = (
Expand All @@ -182,6 +194,7 @@
3A61F48A23AE1F4200A8E47C /* StackNetwork */ = {
isa = PBXGroup;
children = (
3A5E8EF12777B3F300E03A05 /* Combine */,
3A24D7C523C67C1400EDC931 /* Target */,
3A1C4BF623B61EB90012FC6F /* Response */,
3A1C4BEA23B0113E0012FC6F /* Decoding */,
Expand All @@ -205,6 +218,7 @@
3A1C4BF723B62C160012FC6F /* Resources */,
3A61F49823AE1F4200A8E47C /* Info.plist */,
3A61F4CB23AE596100A8E47C /* ParameterEncoderSpec.swift */,
3A5E8EF42777B40400E03A05 /* NetworkProviderPublisherSpec.swift */,
3A1C4BD023AE8D1E0012FC6F /* JSONEncoderSpec.swift */,
3A1C4BD623AEA9BF0012FC6F /* NetworkProviderSpec.swift */,
3A1C4BD823AEAA210012FC6F /* TestHelpers.swift */,
Expand Down Expand Up @@ -401,6 +415,7 @@
3A61F4A823AE27D400A8E47C /* TargetType.swift in Sources */,
3A61F4B723AE2E7B00A8E47C /* Cancellable.swift in Sources */,
3A24D7C223C66F1D00EDC931 /* RetryBehavior.swift in Sources */,
3A5E8EF32777B3F300E03A05 /* NetworkProvider+Combine.swift in Sources */,
3A61F4B023AE281600A8E47C /* HTTPMethod.swift in Sources */,
3A61F4A423AE277400A8E47C /* NetworkProviderType.swift in Sources */,
3A1C4BEE23B011EB0012FC6F /* Response+Map.swift in Sources */,
Expand All @@ -417,6 +432,7 @@
isa = PBXSourcesBuildPhase;
buildActionMask = 2147483647;
files = (
3A5E8EF52777B40400E03A05 /* NetworkProviderPublisherSpec.swift in Sources */,
3A1C4BF223B0C2380012FC6F /* JSONDecoderSpec.swift in Sources */,
3A1C4BD723AEA9BF0012FC6F /* NetworkProviderSpec.swift in Sources */,
3A61F4CC23AE596100A8E47C /* ParameterEncoderSpec.swift in Sources */,
Expand Down
67 changes: 67 additions & 0 deletions Tests/StackNetworkTests/NetworkProviderPublisherSpec.swift
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import Quick
import Nimble
import OHHTTPStubs

@testable import StackNetwork

#if canImport(Combine)
import Combine

@available(iOS 13.0, *)
class NetworkProviderPublisherSpec: QuickSpec {

override func spec() {
var sut: NetworkProvider<GitHub>!
var subscription: Combine.AnyCancellable?

afterEach {
subscription?.cancel()
subscription = nil
}

describe("A network provider") {

beforeEach {
let stubBehavior: StubBehaviorClosure = { target in .immediate(TestHelper.stubSampleResponse(target: target)) }
sut = NetworkProvider<GitHub>(stubBehavior: stubBehavior)
}

it("emits one and only one Response object") {
var numberOfEvents = 0

waitUntil { done in
subscription = sut.requestPublisher(.zen)
.sink(
receiveCompletion: { completion in
switch completion {
case .failure(let error): fail("Unexpected error: \(error)")
case .finished: done()
}
},
receiveValue: { _ in numberOfEvents += 1 }
)
}
expect(numberOfEvents).to(equal(1))
}

it("emits stubbed data for zen request") {
waitUntil { done in
let target = GitHub.zen
subscription = sut.requestPublisher(target)
.sink(
receiveCompletion: { completion in
switch completion {
case .failure(let error): fail("Unexpected error: \(error)")
case .finished: done()
}
},
receiveValue: { response in
expect(response.data).to(equal(target.sampleData))
}
)
}
}
}
}
}
#endif