Andrew Charlwood
42 lines
1.4 KiB
Python
42 lines
1.4 KiB
Python
"""Callback for updating KPI card values from chart-data store."""
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from dash import Input, Output, no_update
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def _format_cost(cost):
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"""Format cost as £X.XM or £X.XK."""
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if cost >= 1_000_000:
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return f"\u00a3{cost / 1_000_000:.1f}M"
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if cost >= 1_000:
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return f"\u00a3{cost / 1_000:.1f}K"
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return f"\u00a3{cost:.0f}"
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def register_kpi_callbacks(app):
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"""Register KPI update callback."""
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@app.callback(
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Output("kpi-patients", "children"),
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Output("kpi-drugs", "children"),
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Output("kpi-cost", "children"),
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Output("kpi-match", "children"),
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Input("chart-data", "data"),
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Input("app-state", "data"),
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)
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def update_kpis(chart_data, app_state):
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"""Update KPI card values when chart-data changes."""
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if not chart_data:
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return no_update, no_update, no_update, no_update
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patients = chart_data.get("unique_patients", 0)
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drugs = chart_data.get("total_drugs", 0)
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cost = chart_data.get("total_cost", 0.0)
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patients_str = f"{patients:,}" if patients else "\u2014"
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drugs_str = str(drugs) if drugs else "\u2014"
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cost_str = _format_cost(cost) if cost else "\u2014"
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chart_type = (app_state or {}).get("chart_type", "directory")
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match_str = "~93%" if chart_type == "indication" else "\u2014"
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return patients_str, drugs_str, cost_str, match_str
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