wallet: provide valid values if invalid estimate mode passed

Co-authored-by: Murch <murch@murch.one>

2 files changed, 6 insertions, 0 deletions

diff --git a/src/util/fees.cpp b/src/util/fees.cpp
index 9a1cea1d4e..1855c0bc90 100644
--- a/src/util/fees.cpp
+++ b/src/util/fees.cpp
@@ -49,6 +49,11 @@ std::string FeeModes(const std::string& delimiter)
     return Join(FeeModeMap(), delimiter, [&](const std::pair<std::string, FeeEstimateMode>& i) { return i.first; });
 }
 
+const std::string InvalidEstimateModeErrorMessage()
+{
+    return "Invalid estimate_mode parameter, must be one of: \"" + FeeModes("\", \"") + "\"";
+}
+
 bool FeeModeFromString(const std::string& mode_string, FeeEstimateMode& fee_estimate_mode)
 {
     auto searchkey = ToUpper(mode_string);
diff --git a/src/util/fees.h b/src/util/fees.h
index d52046a44c..3f1c33ad9c 100644
--- a/src/util/fees.h
+++ b/src/util/fees.h
@@ -13,5 +13,6 @@ enum class FeeReason;
 bool FeeModeFromString(const std::string& mode_string, FeeEstimateMode& fee_estimate_mode);
 std::string StringForFeeReason(FeeReason reason);
 std::string FeeModes(const std::string& delimiter);
+const std::string InvalidEstimateModeErrorMessage();
 
 #endif // BITCOIN_UTIL_FEES_H