Add balancing capabilities

If payment are too unbalanced, it’s easier to make a transfer.

2 files changed, 35 insertions, 0 deletions

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")?
+        })
+    }
+}
diff --git a/src/validation/mod.rs b/src/validation/mod.rs
index 181abc7..291eb4f 100644
--- a/src/validation/mod.rs
+++ b/src/validation/mod.rs
@@ -1,3 +1,4 @@
+pub mod balancing;
 pub mod category;
 pub mod income;
 pub mod login;