feat(linux): Linux Support for DiscordKitBot (#30)

* More macOS and linter fixes

* even more macOS fixes

* more fixes

* even more fixes

* fix unused result warning

* uncomment the commented out botReady decoder

Author: Candygoblen123

.swiftlint.yml

@@ -4,6 +4,7 @@ disabled_rules:
   - multiple_closures_with_trailing_closure
   - large_tuple
   - todo # TODOs are precisely for reminding me of tasks I'll have to do in the future. If they are flagged as violations, it completely defeats the point.
+  - file_length
 opt_in_rules:
 
 force_cast: warning

Package.resolved

@@ -17,15 +17,22 @@ let package = Package(
         .package(url: "https://github.com/ashleymills/Reachability.swift", from: "5.1.0"),
         .package(url: "https://github.com/apple/swift-docc-plugin", from: "1.0.0"),
         .package(url: "https://github.com/apple/swift-protobuf.git", from: "1.6.0"),
-        .package(url: "https://github.com/apple/swift-log.git", from: "1.0.0")
+        .package(url: "https://github.com/apple/swift-log.git", from: "1.0.0"),
+        .package(url: "https://github.com/OpenCombine/OpenCombine.git", from: "0.14.0"),
+        .package(url: "https://github.com/tsolomko/SWCompression.git", from: "4.8.0"),
+        .package(url: "https://github.com/tesseract-one/WebSocket.swift.git", from: "0.2.0")
 	],
 	targets: [
         .target(
             name: "DiscordKitCore",
             dependencies: [
                 .product(name: "Reachability", package: "Reachability.swift", condition: .when(platforms: [.macOS])),
                 .product(name: "SwiftProtobuf", package: "swift-protobuf"),
-                .product(name: "Logging", package: "swift-log")
+                .product(name: "Logging", package: "swift-log"),
+                .product(name: "OpenCombine", package: "OpenCombine", condition: .when(platforms: [.linux])),
+                .product(name: "OpenCombineFoundation", package: "OpenCombine", condition: .when(platforms: [.linux])),
+                .product(name: "SWCompression", package: "SWCompression", condition: .when(platforms: [.linux])),
+                .product(name: "WebSocket", package: "WebSocket.swift", condition: .when(platforms: [.linux]))
             ],
             exclude: [
                 "REST/README.md",

Package.swift

@@ -25,7 +25,7 @@ public protocol CommandOption: Encodable {
     /// If this command is required
     var required: Bool? { get set }
 
-    /// Channel types to restrict visibility of command to
+    // Channel types to restrict visibility of command to
     // var channel_types: ChannelType? { get }
 }
 

Sources/DiscordKitBot/ApplicationCommand/Option/CommandOption.swift

@@ -32,4 +32,3 @@ public struct ActionRow: Component {
         }
     }
 }
-

Sources/DiscordKitBot/MessageComponent/ActionRow.swift

@@ -23,7 +23,7 @@ public struct NCWrapper<Data> {
     }
 
     public func listen(listener: @escaping (Data) -> Void) {
-        notificationCenter.addObserver(forName: name, object: nil, queue: nil) { notif in
+        _ = notificationCenter.addObserver(forName: name, object: nil, queue: nil) { notif in
             guard let obj = notif.object as? Data else { return }
             listener(obj)
         }

Sources/DiscordKitBot/NCWrapper.swift

@@ -50,7 +50,7 @@ public struct InteractionResponse: Encodable {
             public let flags: DiscordKitCore.Message.Flags?
             public let components: [Component]?
             public let attachments: [NewAttachment]?
-            
+
             enum CodingKeys: CodingKey {
                 case content
                 case tts

Sources/DiscordKitBot/Objects/InteractionResponse.swift

@@ -63,7 +63,7 @@ public struct WebhookResponse: Encodable {
         try container.encodeIfPresent(username, forKey: .username)
         try container.encodeIfPresent(avatar_url, forKey: .avatar_url)
         try container.encodeIfPresent(tts, forKey: .tts)
-        try container.encodeIfPresent(embeds, forKey:.embeds)
+        try container.encodeIfPresent(embeds, forKey: .embeds)
         try container.encodeIfPresent(allowed_mentions, forKey: .allowed_mentions)
         try container.encodeIfPresent(attachments, forKey: .attachments)
         try container.encodeIfPresent(flags, forKey: .flags)

Sources/DiscordKitBot/Objects/WebhookResponse.swift

@@ -8,6 +8,10 @@
 import Foundation
 import Logging
 
+#if canImport(FoundationNetworking)
+import FoundationNetworking
+#endif
+
 public class DiscordREST {
     static let log = Logger(label: "DiscordREST", level: nil)
     // How empty, everything is broken into smaller files (for now xD)

Sources/DiscordKitCore/DiscordREST.swift

@@ -6,11 +6,16 @@
 //
 
 import Foundation
+#if canImport(UniformTypeIdentifiers)
 import UniformTypeIdentifiers
-
+#endif
 public extension URL {
 	var mimeType: String {
+		#if canImport(UniformTypeIdentifiers)
 		UTType(filenameExtension: self.pathExtension)?.preferredMIMEType ?? "application/octet-stream"
+        #else
+        "application/octet-stream" // We'll just assume this for now, since UniformTypeIdentifiers isn't available on linux at the moment
+        #endif
     }
 
     /// Appends one or more query items to the URL