From 6d1300640051baa23360846197b54e1e69ae32e3 Mon Sep 17 00:00:00 2001
From: Joris Guyonvarch
Date: Sat, 18 Apr 2026 11:04:47 +0200
Subject: Add balancing capabilities

If payment are too unbalanced, it’s easier to make a transfer.
---
 src/validation/balancing.rs | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 src/validation/balancing.rs

(limited to 'src/validation/balancing.rs')

diff --git a/src/validation/balancing.rs b/src/validation/balancing.rs
new file mode 100644
index 0000000..8892bca
--- /dev/null
+++ b/src/validation/balancing.rs
@@ -0,0 +1,34 @@
+use std::collections::HashMap;
+
+use crate::model::balancing::{Create, Update};
+use crate::validation::utils::*;
+
+pub fn create(form: &HashMap<String, String>) -> Option<Create> {
+    let source = parse::<i64>(form, "source")?;
+    let destination = parse::<i64>(form, "destination")?;
+
+    if source == destination {
+        None
+    } else {
+        Some(Create {
+            source,
+            destination,
+            amount: parse::<i64>(form, "amount")?
+        })
+    }
+}
+
+pub fn update(form: &HashMap<String, String>) -> Option<Update> {
+    let source = parse::<i64>(form, "source")?;
+    let destination = parse::<i64>(form, "destination")?;
+
+    if source == destination {
+        None
+    } else {
+        Some(Update {
+            source,
+            destination,
+            amount: parse::<i64>(form, "amount")?
+        })
+    }
+}
-- 
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