"""Bar chart template — fetch-and-adapt reference for all D3 templates.
Adapted from d3-graph-gallery.com (Yan Holtz) —
https://d3-graph-gallery.com/graph/barplot_basic.html
"""
from __future__ import annotations
from pydantic import BaseModel
from app.agents.d3.registry import D3Template, register
class BarDatum(BaseModel):
name: str
value: float
class BarChartData(BaseModel):
title: str = ""
x_label: str = ""
y_label: str = ""
data: list[BarDatum]
_HTML = """
"""
golden_sample = BarChartData(
title="Demo",
x_label="Category",
y_label="Value",
data=[BarDatum(name="A", value=12), BarDatum(name="B", value=7)],
)
register(
D3Template(
id="bar_chart",
family="chart",
title="Bar chart",
when_to_use="Compare one numeric value across named categories.",
data_requirements="Named categories each with a single numeric value.",
schema=BarChartData,
html_template=_HTML,
golden_sample=golden_sample,
)
)