1 files changed, 173 insertions, 0 deletions

diff --git a/webapp/src/bridge_engine.rs b/webapp/src/bridge_engine.rs
index 873a2f0..70fd828 100644
--- a/webapp/src/bridge_engine.rs
+++ b/webapp/src/bridge_engine.rs
@@ -1,4 +1,12 @@
 use crate::card::Card;
+use crate::card::Suit;
+use anyhow::anyhow;
+use log::debug;
+use regex::Regex;
+use std::fmt;
+use std::str::FromStr;
+use strum::IntoEnumIterator;
+use strum_macros::EnumIter;
 
 #[derive(PartialEq, Eq, Clone, Copy, Debug)]
 pub enum Player {
@@ -55,9 +63,174 @@ impl Turn {
     }
 }
 
+#[derive(PartialEq, Eq, PartialOrd, Ord, Clone, Copy, EnumIter)]
+pub enum ContractLevel {
+    One = 1,
+    Two,
+    Three,
+    Four,
+    Five,
+    Six,
+    Seven,
+}
+
+impl fmt::Display for ContractLevel {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::result::Result<(), std::fmt::Error> {
+        write!(f, "{}", *self as u8)
+    }
+}
+
+impl fmt::Debug for ContractLevel {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::result::Result<(), std::fmt::Error> {
+        write!(f, "{}", self)
+    }
+}
+
+impl FromStr for ContractLevel {
+    type Err = anyhow::Error;
+
+    fn from_str(s: &str) -> std::result::Result<Self, <Self as std::str::FromStr>::Err> {
+        match s {
+            "1" => Ok(ContractLevel::One),
+            "2" => Ok(ContractLevel::Two),
+            "3" => Ok(ContractLevel::Three),
+            "4" => Ok(ContractLevel::Four),
+            "5" => Ok(ContractLevel::Five),
+            "6" => Ok(ContractLevel::Six),
+            "7" => Ok(ContractLevel::Seven),
+            _ => Err(anyhow!("invalid string: {}", s)),
+        }
+    }
+}
+
+#[derive(PartialEq, Eq, Clone, Copy)]
+pub struct Bid {
+    level: ContractLevel,
+    suit: Option<Suit>,
+}
+
+impl Bid {
+    pub fn all_bids() -> Vec<Bid> {
+        let mut result = Vec::with_capacity(7 * 5);
+        for level in ContractLevel::iter() {
+            for suit in Suit::iter() {
+                result.push(Bid {
+                    level,
+                    suit: Some(suit),
+                });
+            }
+            result.push(Bid { level, suit: None });
+        }
+        result
+    }
+}
+
+impl PartialOrd<Self> for Bid {
+    fn partial_cmp(&self, o: &Self) -> std::option::Option<std::cmp::Ordering> {
+        if self.level != o.level {
+            return self.level.partial_cmp(&o.level);
+        }
+        if self.suit != o.suit {
+            if self.suit == None {
+                return Some(std::cmp::Ordering::Greater);
+            }
+            if o.suit == None {
+                return Some(std::cmp::Ordering::Less);
+            }
+            return self.suit.partial_cmp(&o.suit);
+        }
+        return Some(std::cmp::Ordering::Equal);
+    }
+}
+
+impl Ord for Bid {
+    fn cmp(&self, o: &Self) -> std::cmp::Ordering {
+        self.partial_cmp(o).unwrap()
+    }
+}
+
+impl fmt::Display for Bid {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::result::Result<(), std::fmt::Error> {
+        write!(
+            f,
+            "{}{}",
+            self.level,
+            self.suit
+                .map_or("NT".to_string(), |suit| format!("{}", suit))
+        )
+    }
+}
+
+impl fmt::Debug for Bid {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::result::Result<(), std::fmt::Error> {
+        write!(f, "{}", self)
+    }
+}
+
+impl FromStr for Bid {
+    type Err = anyhow::Error;
+    fn from_str(s: &str) -> std::result::Result<Self, <Self as std::str::FromStr>::Err> {
+        lazy_static::lazy_static! {
+            static ref RE: Regex = Regex::new(r#"\s*(.[0-9]*)\s*(.*)"#).unwrap();
+        };
+        let caps = RE.captures(s).ok_or(anyhow!("invalid bid: {}", s))?;
+        debug!("caps: {:?}", caps);
+        let level = caps[1].parse()?;
+        let suit = match &caps[2] {
+            "NT" => None,
+            x => Some(x.parse()?),
+        };
+        Ok(Bid { level, suit })
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;
+    use log::info;
+
+    #[test]
+    fn bid_conversion() {
+        crate::tests::test_setup();
+        let bid1d = Bid {
+            level: ContractLevel::One,
+            suit: Some(Suit::Diamond),
+        };
+        assert_eq!("1♢", format!("{}", bid1d));
+        assert_eq!("1♢", format!("{:?}", bid1d));
+        assert_eq!(bid1d, Bid::from_str("1D").unwrap());
+
+        let mut checked_bids = 0;
+        for bid in Bid::all_bids() {
+            assert_eq!(bid, Bid::from_str(format!("{}", bid).as_str()).unwrap());
+            checked_bids += 1;
+        }
+        assert_eq!(checked_bids, 35);
+    }
+
+    #[test]
+    fn bid_ord() {
+        let bid = |s| Bid::from_str(s).unwrap();
+        assert!(bid("2♦") < bid("3♦"));
+        assert!(bid("3♦") < bid("3♥"));
+        assert!(bid("1♠") < bid("2♣"));
+        assert!(bid("1♠") < bid("1NT"));
+        for bid in Bid::all_bids() {
+            assert_eq!(bid, bid);
+        }
+    }
+
+    #[test]
+    fn contract_level_conversion() {
+        crate::tests::test_setup();
+        assert_eq!("2", format!("{}", ContractLevel::Two));
+        assert_eq!("3", format!("{:?}", ContractLevel::Three));
+
+        let result = ContractLevel::from_str("8");
+        info!("{:?}", result);
+        assert!(result.unwrap_err().to_string().contains("invalid"));
+        assert_eq!(ContractLevel::Seven, "7".parse().unwrap());
+    }
 
     #[test]
     fn next_player() {