Add grouped bar plot

src/ai_dashboard/plot_plugin/grouped_bar_plot.py

@@ -0,0 +1,65 @@
+"""Grouped Bar Plot plugin"""
+
+from typing import Any, List
+import plotly.express as px
+from dash import html, dcc
+from dash.dependencies import Input, Output
+
+from ..base import BasePlotPlugin
+
+
+class GroupedBarPlotPlugin(BasePlotPlugin):
+    """Grouped Bar Plot Plugin."""
+
+    name = "Grouped Bar Plot"
+
+    def dropdown(self, id_suffix: str, label: str, options: List[str]) -> Any:
+        """Create a dropdown control."""
+        return html.Div(
+            [
+                html.Label(label),
+                dcc.Dropdown(
+                    id={"type": "control", "plot": self.name, "axis": id_suffix},
+                    options=[{"label": c, "value": c} for c in options],  # type: ignore
+                    value=options[0],
+                    clearable=False,
+                    persistence=True,
+                ),
+            ]
+        )
+
+    def controls(self) -> Any:
+        """Define controls for the grouped bar plot."""
+        cats = self.categorical_columns()
+        nums = self.numeric_columns()
+        return html.Div(
+            [
+                self.dropdown("x", "Category", cats),
+                self.dropdown("group", "Group", cats),
+                self.dropdown("y", "Value", nums),
+            ]
+        )
+
+    def render(self, **kwargs: Any) -> Any:  # pylint: disable=W0201
+        """Render the grouped bar plot."""
+        fig = px.bar(
+            self.dataframe,
+            x=kwargs["x_axis"],
+            y=kwargs["y_axis"],
+            color=kwargs["group_axis"],
+            barmode="group",
+        )
+        return dcc.Graph(figure=fig)
+
+    def register_callbacks(self, app: Any) -> None:
+        """Register callbacks for the grouped bar plot."""
+
+        @app.callback(  # type: ignore
+            Output({"type": "plot-output", "plot": self.name}, "children"),
+            Input({"type": "control", "plot": self.name, "axis": "x"}, "value"),
+            Input({"type": "control", "plot": self.name, "axis": "group"}, "value"),
+            Input({"type": "control", "plot": self.name, "axis": "y"}, "value"),
+        )
+        def update(x_axis: str, group_axis: str, y_axis: str) -> Any:
+            """Update the grouped bar plot based on controls."""
+            return self.render(x_axis=x_axis, group_axis=group_axis, y_axis=y_axis)