From 755303a4702933eeaf4a00556334e76bb54a1208 Mon Sep 17 00:00:00 2001
From: Artur <33733651+Keeqler@users.noreply.github.com>
Date: Thu, 5 Jun 2025 16:25:39 -0300
Subject: [PATCH] Give tx fee in /transaction

---
 Cargo.lock  | 1 +
 Cargo.toml  | 1 +
 src/main.rs | 9 +++++++++
 3 files changed, 11 insertions(+)

diff --git a/Cargo.lock b/Cargo.lock
index ca8fe7b..72f3d14 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1948,6 +1948,7 @@ dependencies = [
  "clap",
  "cuprate-blockchain",
  "cuprate-database",
+ "cuprate-helper",
  "cuprate-types",
  "derive_more",
  "hex",
diff --git a/Cargo.toml b/Cargo.toml
index f566c6b..6e87282 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -7,6 +7,7 @@ edition = "2024"
 cuprate-blockchain = { path = "./external/cuprate/storage/blockchain", features = ["serde"] }
 cuprate-database = { path = "./external/cuprate/storage/database", features = ["serde"] }
 cuprate-types = { path = "./external/cuprate/types/types", features = ["serde"] }
+cuprate-helper = { path = "./external/cuprate/helper", features = ["serde"] }
 monero-serai = { git = "https://github.com/Cuprate/serai.git", rev = "e6ae8c2", default-features = false }
 hex = "0.4.3"
 actix-web = "4.10.2"
diff --git a/src/main.rs b/src/main.rs
index 1341243..9a36a3a 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,5 +1,6 @@
 use cuprate_blockchain::{config::ConfigBuilder, ops, tables::{OpenTables, Tables}, types::PreRctOutputId} ;
 use cuprate_database::{ConcreteEnv, DatabaseRo, Env, EnvInner, RuntimeError};
+use cuprate_helper::tx::tx_fee;
 use cuprate_types::json::tx::Transaction;
 use hex::{FromHex, FromHexError};
 use actix_web::{error, get, http::StatusCode, web::{self}, App, HttpResponse, HttpServer, Responder};
@@ -101,6 +102,7 @@ struct TransactionResponse {
     pub confirmation_height: usize,
     pub timestamp: u64,
     pub weight: usize,
+    pub fee: u64,
     pub inputs: Vec<TransactionInput>,
     pub outputs: Vec<TransactionOutput>,
     pub extra: String,
@@ -152,6 +154,7 @@ async fn get_tx(
                             }
                         )?;
 
+
                         let mixin_tx_block = new_tables.block_infos().get(&(output.height as usize))?;
                         let mixin_tx_hash: [u8; 32] = if output.tx_idx == mixin_tx_block.mining_tx_index {
                             let tx_blob = new_tables.tx_blobs().get(&output.tx_idx)?;
@@ -195,6 +198,8 @@ async fn get_tx(
                 })
             }
 
+            let fee = tx_fee(&tx);
+
             TransactionResponse {
                 hash: tx_hash.clone(),
                 version: prefix.version,
@@ -203,6 +208,7 @@ async fn get_tx(
                 confirmation_height: tx_height,
                 timestamp: tx_block.timestamp,
                 weight: tx.weight(),
+                fee,
                 extra: hex::encode(prefix.extra),
                 outputs,
                 inputs: inputs?,
@@ -268,6 +274,8 @@ async fn get_tx(
                 })
             }
 
+            let fee = tx_fee(&tx);
+
             TransactionResponse {
                 hash: tx_hash.clone(),
                 version: prefix.version,
@@ -276,6 +284,7 @@ async fn get_tx(
                 confirmation_height: tx_height,
                 timestamp: tx_block.timestamp,
                 weight: tx.weight(),
+                fee,
                 extra: hex::encode(prefix.extra),
                 outputs,
                 inputs: inputs?,