(feat) add returns histogram chart

pages/strategy_performance/app.py

@@ -228,6 +228,33 @@ def intraday_performance(df: pd.DataFrame):
     return fig
 
 
+def returns_histogram(df: pd.DataFrame):
+    colors = [BULLISH_COLOR if val > 0 else BEARISH_COLOR for val in df["realized_pnl"]]
+    fig = go.Figure()
+    fig.add_trace(go.Histogram(name="Losses",
+                               x=df.loc[df["realized_pnl"] < 0, "realized_pnl"],
+                               marker_color=BEARISH_COLOR))
+    fig.add_trace(go.Histogram(name="Profits",
+                               x=df.loc[df["realized_pnl"] > 0, "realized_pnl"],
+                               marker_color=BULLISH_COLOR))
+    fig.update_layout(title=dict(
+                            text='Returns Histogram',
+                            x=0.5,
+                            # y=0.93,
+                            xanchor="center",
+                            # yanchor="bottom"
+                        ),
+        legend=dict(
+            orientation="h",
+            # entrywidth=70,
+            yanchor="bottom",
+            y=1.02,
+            xanchor="center",
+            x=.48
+        ))
+    return fig
+
+
 style_metric_cards()
 st.subheader("🔫 Data source")
 with st.expander("⬆️ Upload"):