Add all-time high/low change percentage to AssetMarket

Introduces fields for all_time_high_change_percentage and all_time_low_change_percentage in AssetMarket. Calculates these values in AssetPriceInfo and PriceRow, and adds a test to verify correct computation.

Author: gemcoder21

crates/primitives/src/asset_price.rs

@@ -38,8 +38,10 @@ pub struct AssetMarket {
     pub max_supply: Option<f64>,
     pub all_time_high: Option<f64>,
     pub all_time_high_date: Option<DateTime<Utc>>,
+    pub all_time_high_change_percentage: Option<f64>,
     pub all_time_low: Option<f64>,
     pub all_time_low_date: Option<DateTime<Utc>>,
+    pub all_time_low_change_percentage: Option<f64>,
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize)]

crates/primitives/src/asset_price_info.rs

@@ -40,6 +40,7 @@ impl AssetPriceInfo {
     }
 
     pub fn as_market_with_rate(&self, rate: f64) -> AssetMarket {
+        let current_price = self.price.price;
         AssetMarket {
             market_cap: self.market.market_cap.map(|x| x * rate),
             market_cap_fdv: self.market.market_cap_fdv.map(|x| x * rate),
@@ -50,8 +51,45 @@ impl AssetPriceInfo {
             max_supply: self.market.max_supply,
             all_time_high: self.market.all_time_high.map(|x| x * rate),
             all_time_high_date: self.market.all_time_high_date,
+            all_time_high_change_percentage: self.market.all_time_high.map(|ath| (current_price - ath) / ath * 100.0),
             all_time_low: self.market.all_time_low.map(|x| x * rate),
             all_time_low_date: self.market.all_time_low_date,
+            all_time_low_change_percentage: self.market.all_time_low.map(|atl| (current_price - atl) / atl * 100.0),
         }
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::Chain;
+    use chrono::Utc;
+
+    #[test]
+    fn test_all_time_change_percentage() {
+        let info = AssetPriceInfo {
+            asset_id: AssetId::from(Chain::Bitcoin, None),
+            price: Price::new(80.0, 5.0, Utc::now()),
+            market: AssetMarket {
+                market_cap: None,
+                market_cap_fdv: None,
+                market_cap_rank: None,
+                total_volume: None,
+                circulating_supply: None,
+                total_supply: None,
+                max_supply: None,
+                all_time_high: Some(100.0),
+                all_time_high_date: None,
+                all_time_high_change_percentage: None,
+                all_time_low: Some(40.0),
+                all_time_low_date: None,
+                all_time_low_change_percentage: None,
+            },
+        };
+
+        let market = info.as_market();
+
+        assert_eq!(market.all_time_high_change_percentage, Some(-20.0));
+        assert_eq!(market.all_time_low_change_percentage, Some(100.0));
+    }
+}

crates/storage/src/models/price.rs

@@ -145,8 +145,10 @@ impl PriceRow {
             max_supply: Some(self.max_supply),
             all_time_high: Some(self.all_time_high),
             all_time_high_date: self.all_time_high_date.map(|d| d.and_utc()),
+            all_time_high_change_percentage: Some((self.price - self.all_time_high) / self.all_time_high * 100.0),
             all_time_low: Some(self.all_time_low),
             all_time_low_date: self.all_time_low_date.map(|d| d.and_utc()),
+            all_time_low_change_percentage: Some((self.price - self.all_time_low) / self.all_time_low * 100.0),
         }
     }