332 lines
11 KiB
TypeScript
332 lines
11 KiB
TypeScript
"use client";
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import type { FieldHistoryEntry, StageSectionConfig } from "@/types/form";
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import { formatShortDate } from "./FieldHistory";
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/**
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* Date-grouped timeline strip at the top of the report. Walks every
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* date-type field across all stage sections (0–5), pulls each field's
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* most-recent entered date, and plots events into six horizontal swim
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* lanes — one per stage. Stage 5's `Date_Opened` gets visual emphasis
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* as the journey's anchor at the right end of the time axis. A faint
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* "Today" tick anchors the reader if today falls within the range, and
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* an adaptive month/year axis runs beneath the lanes. Each dot exposes
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* a tooltip on hover or keyboard focus.
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*/
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export function DateTimeline({
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sections,
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fieldHistory,
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}: {
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sections: StageSectionConfig[];
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fieldHistory: Record<string, FieldHistoryEntry[]>;
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}) {
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type Event = {
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rank: number;
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fieldLabel: string;
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date: string; // YYYY-MM-DD or full ISO
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isOpened: boolean;
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};
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const events: Event[] = [];
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for (const section of sections) {
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if (section.rank < 0 || section.rank > 5) continue;
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for (const f of section.fields) {
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if (f.type !== "date") continue;
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const history = fieldHistory[f.name];
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if (!history || history.length === 0) continue;
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const v = history[0].value;
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if (typeof v !== "string" || v.length === 0) continue;
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events.push({
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rank: section.rank,
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fieldLabel: f.label,
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date: v,
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isOpened: f.name === "Date_Opened",
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});
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}
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}
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if (events.length === 0) return null;
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const times = events.map((e) => new Date(e.date).getTime()).filter(Number.isFinite);
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if (times.length === 0) return null;
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const openedEvent = events.find((e) => e.isOpened);
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const openedTime = openedEvent ? new Date(openedEvent.date).getTime() : undefined;
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const minT = Math.min(...times);
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// If Date_Opened is set, anchor the right edge there; if any other event
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// is later, extend so nothing falls off the chart.
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const maxT = Math.max(...times, openedTime ?? -Infinity);
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const tRange = maxT - minT || 1;
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const todayT = Date.now();
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const todayPct =
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todayT >= minT && todayT <= maxT ? ((todayT - minT) / tRange) * 100 : null;
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const ticks = generateAxisTicks(minT, maxT);
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return (
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<section
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aria-labelledby="timeline-heading"
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className="rounded-lg border border-rule bg-paper-2/30 px-6 py-5 sm:px-7 sm:py-6"
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>
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<div className="flex items-baseline justify-between gap-4">
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<h2
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id="timeline-heading"
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className="font-display text-base font-medium leading-tight text-ink"
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>
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Timeline
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</h2>
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<p className="text-[11px] uppercase tracking-[0.12em] text-ink-mute tabular-nums">
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{formatShortDate(new Date(minT).toISOString())}
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{" → "}
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{formatShortDate(new Date(maxT).toISOString())}
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</p>
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</div>
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<ol className="mt-4 space-y-2">
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{[0, 1, 2, 3, 4, 5].map((rank) => {
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const rowEvents = events.filter((e) => e.rank === rank);
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const isEmpty = rowEvents.length === 0;
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return (
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<li
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key={rank}
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className="grid grid-cols-[3.5rem_1fr] items-center gap-3 sm:grid-cols-[4.5rem_1fr]"
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>
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<span className="text-[10px] uppercase tracking-[0.14em] font-medium text-ink-mute">
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Stage {rank}
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</span>
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<div className="relative h-5">
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<span
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aria-hidden
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className={
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"absolute inset-x-0 top-1/2 -translate-y-1/2 h-px " +
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(isEmpty ? "bg-rule-soft/60" : "bg-rule-soft")
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}
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/>
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{todayPct !== null && (
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<span
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aria-hidden
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style={{ left: `${todayPct}%` }}
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className="absolute top-0 bottom-0 w-px -translate-x-1/2 border-l border-dashed border-clay-300/70"
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/>
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)}
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{rowEvents.map((e, i) => {
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const t = new Date(e.date).getTime();
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if (!Number.isFinite(t)) return null;
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const x = ((t - minT) / tRange) * 100;
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return (
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<TimelineDot
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key={i}
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rank={rank}
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event={e}
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x={x}
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/>
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);
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})}
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</div>
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</li>
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);
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})}
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</ol>
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{/* Adaptive month/year axis. Render only when we have ≥2 ticks so a
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single tick doesn't dangle. Today gets its own labeled mark when
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it falls within range. */}
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{ticks.length >= 2 && (
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<div className="mt-3 grid grid-cols-[3.5rem_1fr] items-start gap-3 sm:grid-cols-[4.5rem_1fr]">
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<span aria-hidden />
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<div className="relative h-7">
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<span
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aria-hidden
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className="absolute inset-x-0 top-0 h-px bg-rule-soft"
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/>
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{ticks.map((tk, i) => {
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const x = ((tk.t - minT) / tRange) * 100;
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// Edge labels shift so they don't overflow the row.
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const alignClass =
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x < 6
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? "left-0 origin-top-left"
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: x > 94
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? "right-0 origin-top-right text-right"
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: "left-1/2 -translate-x-1/2 text-center";
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return (
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<span
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key={i}
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style={{ left: `${x}%` }}
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className="absolute top-0 -translate-x-1/2"
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>
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<span
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aria-hidden
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className="block h-1.5 w-px bg-rule mx-auto"
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/>
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<span
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className={
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"absolute top-2 block whitespace-nowrap text-[9px] uppercase tracking-[0.08em] tabular-nums text-ink-mute " +
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alignClass
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}
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>
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{tk.label}
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</span>
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</span>
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);
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})}
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{todayPct !== null && (
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<span
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style={{ left: `${todayPct}%` }}
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className="absolute top-0 -translate-x-1/2"
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>
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<span
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aria-hidden
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className="block h-1.5 w-px bg-clay-500 mx-auto"
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/>
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<span className="absolute top-2 left-1/2 -translate-x-1/2 block whitespace-nowrap text-[9px] font-medium uppercase tracking-[0.08em] text-clay-700">
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Today
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</span>
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</span>
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)}
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</div>
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</div>
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)}
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{/* Accessible event list — invisible to sighted users but readable by SR */}
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<ul className="sr-only">
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{events.map((e, i) => (
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<li key={i}>
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Stage {e.rank}: {e.fieldLabel} — {formatShortDate(e.date)}
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{e.isOpened ? " (opened)" : ""}
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</li>
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))}
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</ul>
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</section>
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);
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}
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function stageDotBg(rank: number): string {
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switch (rank) {
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case 0:
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return "bg-leaf-200";
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case 1:
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return "bg-leaf-300";
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case 2:
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return "bg-leaf-500";
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case 3:
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return "bg-leaf-600";
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case 4:
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return "bg-leaf-700";
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case 5:
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return "bg-clay-700";
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default:
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return "bg-leaf-600";
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}
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}
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/**
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* A single dot on the timeline plus its hover/focus tooltip. Keyboard
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* users can Tab to each dot and the tooltip will appear via
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* `group-focus-within`. The tooltip is anchored above the dot; for dots
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* near the left or right edge of the row, anchor flips so the card
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* doesn't overflow.
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*/
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function TimelineDot({
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rank,
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event,
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x,
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}: {
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rank: number;
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event: { fieldLabel: string; date: string; isOpened: boolean };
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x: number;
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}) {
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const isOpened = event.isOpened;
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const bg = isOpened ? "bg-clay-700" : stageDotBg(rank);
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const size = isOpened ? "h-3.5 w-3.5" : "h-2.5 w-2.5";
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const ring = isOpened ? "ring-2" : "ring-1";
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const tipAlign =
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x < 18
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? "left-0"
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: x > 82
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? "right-0"
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: "left-1/2 -translate-x-1/2";
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return (
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<span
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role="img"
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tabIndex={0}
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aria-label={`${event.fieldLabel}, ${formatShortDate(event.date)}${isOpened ? " (opened)" : ""}, stage ${rank}`}
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style={{ left: `${x}%` }}
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className={
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"group/dot absolute top-1/2 -translate-x-1/2 -translate-y-1/2 rounded-full shadow-sm focus:outline-none focus-visible:ring-2 focus-visible:ring-leaf-500/40 " +
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`${ring} ring-paper ${size} ${bg}`
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}
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>
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<span
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role="tooltip"
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className={
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"pointer-events-none absolute bottom-full z-30 mb-2 hidden whitespace-nowrap rounded-md bg-ink/95 px-2.5 py-1.5 text-[11px] leading-snug text-paper shadow-lg group-hover/dot:block group-focus-within/dot:block " +
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tipAlign
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}
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>
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<span className="block font-medium">{event.fieldLabel}</span>
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<span className="mt-0.5 block tabular-nums text-paper-2/80">
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{formatShortDate(event.date)}
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<span className="ml-2 uppercase tracking-[0.08em] text-paper-2/60">
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Stage {rank}
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</span>
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</span>
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{isOpened && (
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<span className="mt-0.5 block text-clay-200 uppercase tracking-[0.08em]">
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Opened
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</span>
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)}
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</span>
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</span>
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);
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}
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/**
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* Pick a "nice" tick interval for the time axis based on the visible
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* span, then walk that interval from min to max producing labeled ticks.
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* Uses months for shorter spans, years for longer ones; January-bordered
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* month ticks include the year so the reader has an anchor.
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*/
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export function generateAxisTicks(minT: number, maxT: number): Array<{ t: number; label: string }> {
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const range = maxT - minT;
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const monthMs = 30.4375 * 24 * 3600 * 1000;
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const months = range / monthMs;
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type Step = { unit: "month" | "year"; step: number };
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let plan: Step;
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if (months < 4) plan = { unit: "month", step: 1 };
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else if (months < 12) plan = { unit: "month", step: 2 };
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else if (months < 24) plan = { unit: "month", step: 3 };
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else if (months < 48) plan = { unit: "month", step: 6 };
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else if (months / 12 < 12) plan = { unit: "year", step: 1 };
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else plan = { unit: "year", step: 2 };
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const ticks: Array<{ t: number; label: string }> = [];
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const start = new Date(minT);
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let y = start.getFullYear();
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let m =
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plan.unit === "year"
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? 0
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: Math.floor(start.getMonth() / plan.step) * plan.step;
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// Don't skip a tick that sits right at minT — start from minT-aligned step.
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while (true) {
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const t = new Date(y, m, 1).getTime();
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if (t > maxT) break;
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if (t >= minT) {
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const d = new Date(y, m, 1);
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const label =
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plan.unit === "year"
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? String(y)
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: m === 0
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? d.toLocaleDateString("en-US", { month: "short", year: "numeric" })
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: d.toLocaleDateString("en-US", { month: "short" });
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ticks.push({ t, label });
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}
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if (plan.unit === "year") {
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y += plan.step;
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} else {
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m += plan.step;
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while (m > 11) {
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m -= 12;
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y += 1;
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}
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}
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}
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return ticks;
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}
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