110 lines
3.3 KiB
TypeScript
110 lines
3.3 KiB
TypeScript
// Copyright: Ankitects Pty Ltd and contributors
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// License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
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/* eslint
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@typescript-eslint/no-non-null-assertion: "off",
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@typescript-eslint/no-explicit-any: "off",
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*/
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import type pb from "anki/backend_proto";
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import { extent, histogram, sum } from "d3-array";
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import { scaleLinear, scaleSequential } from "d3-scale";
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import type { HistogramData } from "./histogram-graph";
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import { interpolateBlues } from "d3-scale-chromatic";
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import type { I18n } from "anki/i18n";
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import { dayLabel } from "anki/time";
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import { GraphRange } from "./graph-helpers";
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import type { TableDatum } from "./graph-helpers";
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export interface GraphData {
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daysAdded: number[];
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}
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export function gatherData(data: pb.BackendProto.GraphsOut): GraphData {
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const daysAdded = (data.cards as pb.BackendProto.Card[]).map((card) => {
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const elapsedSecs = (card.id as number) / 1000 - data.nextDayAtSecs;
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return Math.ceil(elapsedSecs / 86400);
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});
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return { daysAdded };
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}
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export function buildHistogram(
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data: GraphData,
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range: GraphRange,
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i18n: I18n
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): [HistogramData | null, TableDatum[]] {
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// get min/max
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const total = data.daysAdded.length;
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if (!total) {
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return [null, []];
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}
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const [xMinOrig, _xMax] = extent(data.daysAdded);
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let xMin = xMinOrig;
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// cap max to selected range
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switch (range) {
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case GraphRange.Month:
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xMin = -31;
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break;
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case GraphRange.ThreeMonths:
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xMin = -90;
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break;
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case GraphRange.Year:
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xMin = -365;
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break;
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case GraphRange.AllTime:
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break;
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}
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const xMax = 1;
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const desiredBars = Math.min(70, Math.abs(xMin!));
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const scale = scaleLinear().domain([xMin!, xMax]);
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const bins = histogram()
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.domain(scale.domain() as any)
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.thresholds(scale.ticks(desiredBars))(data.daysAdded);
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// empty graph?
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if (!sum(bins, (bin) => bin.length)) {
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return [null, []];
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}
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const adjustedRange = scaleLinear().range([0.7, 0.3]);
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const colourScale = scaleSequential((n) =>
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interpolateBlues(adjustedRange(n)!)
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).domain([xMax!, xMin!]);
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const totalInPeriod = sum(bins, (bin) => bin.length);
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const periodDays = Math.abs(xMin!);
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const cardsPerDay = Math.round(totalInPeriod / periodDays);
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const tableData = [
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{
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label: i18n.tr(i18n.TR.STATISTICS_TOTAL),
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value: i18n.tr(i18n.TR.STATISTICS_CARDS, { cards: totalInPeriod }),
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},
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{
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label: i18n.tr(i18n.TR.STATISTICS_AVERAGE),
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value: i18n.tr(i18n.TR.STATISTICS_CARDS_PER_DAY, { count: cardsPerDay }),
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},
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];
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function hoverText(
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data: HistogramData,
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binIdx: number,
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cumulative: number,
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_percent: number
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): string {
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const bin = data.bins[binIdx];
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const day = dayLabel(i18n, bin.x0!, bin.x1!);
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const cards = i18n.tr(i18n.TR.STATISTICS_CARDS, { cards: bin.length });
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const total = i18n.tr(i18n.TR.STATISTICS_RUNNING_TOTAL);
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const totalCards = i18n.tr(i18n.TR.STATISTICS_CARDS, { cards: cumulative });
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return `${day}:<br>${cards}<br>${total}: ${totalCards}`;
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}
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return [
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{ scale, bins, total: totalInPeriod, hoverText, colourScale, showArea: true },
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tableData,
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];
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}
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