Add policies to web3 provider. Add resolver as prop of read transaction. Update functions accordingly

Author: janndriessen

Sources/Core/Structure/Web3ProviderProtocol.swift

@@ -10,6 +10,7 @@ import Foundation
 public protocol Web3Provider {
     var network: Networks? {get set}
     var attachedKeystoreManager: KeystoreManager? {get set}
+    var policies: Policies {get set}
     var url: URL {get}
     var session: URLSession {get}
 }

Sources/web3swift/Operations/ReadTransaction.swift

@@ -16,6 +16,7 @@ public class ReadOperation {
     public var method: String
     public var data: Data? { transaction.data }
 
+    var resolver: PolicyResolver
     var web3: Web3
 
     // FIXME: Rewrite this to CodableTransaction
@@ -30,12 +31,11 @@ public class ReadOperation {
         if let network = self.web3.provider.network {
             self.transaction.chainID = network.chainID
         }
+        self.resolver = PolicyResolver(provider: web3.provider)
     }
 
     // TODO: Remove type erasing here, some broad wide protocol should be added instead
     public func callContractMethod() async throws -> [String: Any] {
-        // TODO: might change to be dependency
-        let resolver = PolicyResolver(provider: web3.provider)
         try await resolver.resolveAll(for: &transaction)
         // MARK: Read data from ABI flow
         // FIXME: This should be dropped, and after `execute()` call, just to decode raw data.

Sources/web3swift/Operations/WriteOperation.swift

@@ -11,10 +11,13 @@ import Core
 public class WriteOperation: ReadOperation {
 
     // FIXME: Rewrite this to CodableTransaction
-    public func writeToChain(password: String, policies: Policies = .auto) async throws -> TransactionSendingResult {
-        // TODO: might change to be dependency
-        let resolver = PolicyResolver(provider: web3.provider)
-        try await resolver.resolveAll(for: &transaction)
+    /// Sends (raw) transaction for write operation.
+    /// - Parameters:
+    ///   - password: Password for private key.
+    ///   - policies: Custom policies for how to resolve (optional). Default are policies on Web3Provider instance.
+    public func writeToChain(password: String, policies: Policies? = nil) async throws -> TransactionSendingResult {
+        let policiesOrUserDefaults = policies ?? web3.provider.policies
+        try await resolver.resolveAll(for: &transaction, with: policiesOrUserDefaults)
         if let attachedKeystoreManager = self.web3.provider.attachedKeystoreManager {
             do {
                 try Web3Signer.signTX(transaction: &transaction,

Sources/web3swift/Web3/Web3+HttpProvider.swift

@@ -11,6 +11,7 @@ import Core
 public class Web3HttpProvider: Web3Provider {
     public var url: URL
     public var network: Networks?
+    public var policies: Policies = .auto
     public var attachedKeystoreManager: KeystoreManager?
     public var session: URLSession = {() -> URLSession in
         let config = URLSessionConfiguration.default