From d8235b6edd152f8243bcd84ffaab9c6d24d55a17 Mon Sep 17 00:00:00 2001
From: Aryadev Chavali <aryadev@aryadevchavali.com>
Date: Tue, 7 Apr 2026 12:49:26 +0100
Subject: [PATCH] modes:triple: new file encoding a Triple with new implemented

Not a difficult function to think about: we just don't want a
situation where we have all jokers.
---
 big-c.org           |  2 +-
 src/modes/triple.rs | 32 ++++++++++++++++++++++++++++++++
 2 files changed, 33 insertions(+), 1 deletion(-)
 create mode 100644 src/modes/triple.rs

diff --git a/big-c.org b/big-c.org
index 3ede493..8e6f135 100644
--- a/big-c.org
+++ b/big-c.org
@@ -2,7 +2,7 @@
 
 * WIP triples :modes:feat_triples:
 Model the concept of a triple (three cards of similar rank).
-** WIP Triple::new
+** DONE Triple::new
 ** TODO Hand
 ** TODO Display
 ** TODO Ord
diff --git a/src/modes/triple.rs b/src/modes/triple.rs
new file mode 100644
index 0000000..1009931
--- /dev/null
+++ b/src/modes/triple.rs
@@ -0,0 +1,32 @@
+use crate::{
+    card::{Card, PlayingCard},
+    helper::ordered,
+};
+
+#[derive(Debug, Copy, Clone)]
+pub struct Triple(Card, Card, Card);
+
+impl Triple {
+    fn new(c1: Card, c2: Card, c3: Card) -> Option<Triple> {
+        let [c1, c2, c3] = ordered([c1, c2, c3]);
+
+        match (c1, c2, c3) {
+            (Card::Joker(_), Card::Joker(_), Card::Joker(_)) => None,
+            // NOTE: c3 should not be a joker now.
+            (Card::Joker(_), Card::Joker(_), _) => Some(Triple(c1, c2, c3)),
+            (
+                Card::Joker(_),
+                Card::PlayingCard(PlayingCard { rank: r1, .. }),
+                Card::PlayingCard(PlayingCard { rank: r2, .. }),
+            ) if r1 == r2 => Some(Triple(c1, c2, c3)),
+
+            (
+                Card::PlayingCard(PlayingCard { rank: r1, .. }),
+                Card::PlayingCard(PlayingCard { rank: r2, .. }),
+                Card::PlayingCard(PlayingCard { rank: r3, .. }),
+            ) if r1 == r2 && r2 == r3 => Some(Triple(c1, c2, c3)),
+
+            _ => None,
+        }
+    }
+}