feat： add previewnet

README.md

@@ -29,7 +29,7 @@ https://outblock.github.io/flow-swift/
 This is a Swift Package, and can be installed via Xcode with the URL of this repository:
 
 ```swift
-.package(name: "Flow", url: "https://github.com/outblock/flow-swift.git", from: "0.3.4")
+.package(name: "Flow", url: "https://github.com/outblock/flow-swift.git", from: "0.3.6")
 ```
 
 ## Config

Sources/Models/FlowChainId.swift

@@ -42,7 +42,11 @@ public extension Flow {
         /// Default node is `access.crescendo.nodes.onflow.org:9000`
         /// HTTP node `https://rest-crescendo.onflow.org/`
         case crescendo
-
+
+        /// Previewnet enviroment
+        /// Default node is `access-previewnet.onflow.org/:9000`
+        /// HTTP node `https://rest-previewnet.onflow.org/`
+        case previewnet
         /// Emulator enviroment
         /// Default node is `127.0.0.1:9000`
         case emulator
@@ -51,7 +55,7 @@ public extension Flow {
         case custom(name: String, transport: Flow.Transport)
 
         /// List of other type chain id exclude custom type
-        public static var allCases: [Flow.ChainID] = [.mainnet, .testnet, .canarynet, .crescendo, .emulator]
+        public static var allCases: [Flow.ChainID] = [.mainnet, .testnet, .canarynet, .crescendo,.previewnet, .emulator]
 
         /// Name of the chain id
         public var name: String {
@@ -62,6 +66,8 @@ public extension Flow {
                 return "testnet"
             case .crescendo:
                 return "crescendo"
+            case .previewnet:
+                return "previewnet"
             case .canarynet:
                 return "canarynet"
             case .emulator:
@@ -98,6 +104,8 @@ public extension Flow {
                 return .HTTP(URL(string: "http://127.0.0.1:8888/")!)
             case .crescendo:
                 return .HTTP(URL(string: "https://rest-crescendo.onflow.org/")!)
+            case .previewnet:
+                return .HTTP(URL(string: "https://rest-previewnet.onflow.org/")!)
             case let .custom(_, transport):
                 return transport
             default:
@@ -116,6 +124,8 @@ public extension Flow {
                 return .gRPC(.init(node: "access.canary.nodes.onflow.org", port: 9000))
             case .crescendo:
                 return .gRPC(.init(node: "access.crescendo.nodes.onflow.org", port: 9000))
+            case .previewnet:
+                return .gRPC(.init(node: "access-previewnet.onflow.org", port: 9000))
             case .emulator:
                 return .gRPC(.init(node: "127.0.0.1", port: 9000))
             case let .custom(_, endpoint):