Add a getOperations helper to SteemURL

Sources/Steem/Operation.swift

@@ -4,7 +4,7 @@
 import Foundation
 
 /// A type that represents a operation on the Steem blockchain.
-public protocol OperationType: SteemEncodable, Decodable {}
+public protocol OperationType: SteemCodable {}
 
 /// Namespace for all available Steem operations.
 public struct Operation {

Sources/Steem/SteemURL.swift

@@ -89,7 +89,7 @@ public struct SteemURL {
 
     /// The signing params.
     public let params: Params
-    
+
     let type: PayloadType
     let payload: Any
 
@@ -159,6 +159,24 @@ public struct SteemURL {
         self.params = params
     }
 
+    /// Returns the operations contained in the signing URL.
+    public func getOperations() throws -> [OperationType] {
+        let ops: [Any]?
+        switch self.type {
+        case .transaction:
+            ops = (self.payload as? [String: Any])?["operations"] as? [Any]
+        case .operation:
+            ops = [self.payload]
+        case .operations:
+            ops = self.payload as? [Any]
+        }
+        guard ops != nil else {
+            throw Error.payloadInvalid
+        }
+        let decoded = try decodeObject([AnyOperation].self, from: ops!)
+        return decoded.map { $0.operation }
+    }
+
     /// Options used to resolve a signing url to a signer and transaction.
     public struct ResolveOptions {
         /// The ref block number used to fill in the `__ref_block_num` placeholder.

Tests/SteemTests/SteemURL.swift

@@ -28,6 +28,9 @@ class SeemURLTest: XCTestCase {
         params.noBroadcast = true
         let url = SteemURL(operations: operations, params: params)
         XCTAssertNotNil(url)
+        let ops = try url?.getOperations()
+        XCTAssertEqual(ops?[0] as? Steem.Operation.Vote, (operations[0] as! Steem.Operation.Vote))
+        XCTAssertEqual(ops?[1] as? Steem.Operation.Transfer, (operations[1] as! Steem.Operation.Transfer))
         let options = SteemURL.ResolveOptions(refBlockNum: 0, refBlockPrefix: 1, expiration: Date(timeIntervalSinceReferenceDate: 0), signers: ["foo", "baz"], preferredSigner: "baz")
         let result = try url?.resolve(with: options)
         XCTAssertEqual(result?.signer, "foo")