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| """Plotly chart: recent closes, the forecast and its 95% band.""" | |
| from __future__ import annotations | |
| import plotly.graph_objects as go | |
| from bbca.service import Prediction | |
| INK = "#E8EEF4" | |
| MUTED = "#7F8FA0" | |
| GRID = "#1C2631" | |
| ACCENT = "#C8F53C" | |
| BAND = "rgba(200, 245, 60, 0.14)" | |
| LIVE = "#FFB547" | |
| SHOW_SESSIONS = 120 | |
| def _money(x: float) -> str: | |
| return f"Rp {x:,.0f}" | |
| def build(pred: Prediction) -> go.Figure: | |
| closes = pred.prices.closes.iloc[-SHOW_SESSIONS:] | |
| fc = pred.forecast | |
| base_x = [fc.base_date] | |
| base_y = [fc.base_price] | |
| fx = list(fc.dates) | |
| fig = go.Figure() | |
| fig.add_trace(go.Scatter( | |
| x=base_x + fx + fx[::-1] + base_x, | |
| y=base_y + list(fc.upper) + list(fc.lower[::-1]) + base_y, | |
| mode="lines", fill="toself", fillcolor=BAND, line=dict(width=0), | |
| hoverinfo="skip", name="95% range", | |
| )) | |
| fig.add_trace(go.Scatter( | |
| x=closes.index, y=closes.values, mode="lines", name="Close", | |
| line=dict(color=INK, width=1.6), | |
| hovertemplate="%{x|%d %b %Y}<br>%{y:,.0f}<extra>close</extra>", | |
| )) | |
| fig.add_trace(go.Scatter( | |
| x=base_x + fx, y=base_y + list(fc.mean), mode="lines+markers", name="Forecast", | |
| line=dict(color=ACCENT, width=2, dash="dot"), | |
| marker=dict(size=[0] + [7] * len(fx), color=ACCENT), | |
| hovertemplate="%{x|%d %b %Y}<br>%{y:,.0f}<extra>forecast</extra>", | |
| )) | |
| if fc.base_is_live: | |
| fig.add_trace(go.Scatter( | |
| x=base_x, y=base_y, mode="markers", name="Running price", | |
| marker=dict(size=10, color=LIVE, line=dict(color="#0A0E13", width=2)), | |
| hovertemplate=f"today, intraday<br>{_money(fc.base_price)}<extra></extra>", | |
| )) | |
| fig.update_layout( | |
| height=400, | |
| margin=dict(l=8, r=8, t=8, b=8), | |
| paper_bgcolor="rgba(0,0,0,0)", | |
| plot_bgcolor="rgba(0,0,0,0)", | |
| font=dict(family="IBM Plex Mono, ui-monospace, monospace", color=MUTED, size=12), | |
| hovermode="x unified", | |
| hoverlabel=dict(bgcolor="#111821", bordercolor=GRID, font=dict(color=INK)), | |
| legend=dict(orientation="h", y=1.02, x=0, bgcolor="rgba(0,0,0,0)"), | |
| xaxis=dict( | |
| gridcolor=GRID, zeroline=False, showline=False, | |
| rangebreaks=[dict(bounds=["sat", "mon"])], | |
| ), | |
| yaxis=dict(gridcolor=GRID, zeroline=False, tickformat=",.0f", side="right"), | |
| ) | |
| return fig | |
| def empty() -> go.Figure: | |
| fig = go.Figure() | |
| fig.update_layout( | |
| height=400, margin=dict(l=8, r=8, t=8, b=8), | |
| paper_bgcolor="rgba(0,0,0,0)", plot_bgcolor="rgba(0,0,0,0)", | |
| xaxis=dict(visible=False), yaxis=dict(visible=False), | |
| annotations=[dict(text="chart appears after the first run", showarrow=False, | |
| font=dict(family="IBM Plex Mono, monospace", color=MUTED, size=13))], | |
| ) | |
| return fig | |