Files
parking_solution/apps/server/src/routes/reports.ts
T
julian 7ef332999e feat(reports): occupancy curve, hour×dow heatmap, stay histogram, fraud KPIs
The dashboard had generic BI views but nothing parking-shaped. Added:

- Occupancy step-area over the range with the configured capacity as a
  red reference line. occupancyStart folds the ENTIRE prior ledger
  (voided entries excluded, clamped ≥0); each series point carries
  occupancyEnd. Answers "when are we near full".
- Entries heatmap hour × day-of-week (7×24, row 0 = Monday, site tz) as
  a pure CSS-grid intensity map — weekday-vs-weekend at a glance, the
  direct evidence for tariff windows. Replaces the flat hour histogram
  (strictly contains it).
- Stay-duration histogram at tariff-shaped edges (30m/1h/2h/4h/8h/24h/
  tail): where ladder/up-to breakpoints should sit.
- Voids + anomalies KPIs (accented when >0) — the look-closer counters
  the signed chain exists for; peak-occupancy KPI (peak / capacity).
- Revenue bars stacked cash vs card (the drawer's money vs the bank's);
  CSV export gains cash, card, occupancy_end columns.

Internals: localParts caches its Intl formatter per tz (was one new
formatter per ledger row); @parking/db re-exports lt/gt. 5 new tests.

Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V
2026-07-06 12:35:54 +02:00

75 lines
3.0 KiB
TypeScript

import type { FastifyInstance } from "fastify";
import type { Db } from "@parking/db";
import { requirePermission } from "../auth.js";
import { reportSummary, type Bucket } from "../reports.js";
// Admin reporting API. Read-only aggregation over the signed ledger (+ the sessions
// cache for durations); no writes, no new event types. Gated on `report:read` — the
// same permission the events feed/occupancy use. See reports.ts, wiki/concepts/reports.md.
const BUCKETS: Bucket[] = ["hour", "day", "month"];
/** Clamp a query into a valid [from, to) + bucket. Defaults: last 30 days, daily. */
function parseQuery(q: { from?: string; to?: string; bucket?: string }): {
from: string;
to: string;
bucket: Bucket;
} {
const now = Date.now();
const to = isFiniteIso(q.to) ? q.to! : new Date(now).toISOString();
const from = isFiniteIso(q.from) ? q.from! : new Date(now - 30 * 86_400_000).toISOString();
const bucket = BUCKETS.includes(q.bucket as Bucket) ? (q.bucket as Bucket) : "day";
// Guard the inversion (from after to) — swap rather than return an empty report.
return from <= to ? { from, to, bucket } : { from: to, to: from, bucket };
}
function isFiniteIso(s: string | undefined): boolean {
return !!s && Number.isFinite(Date.parse(s));
}
export async function reportRoutes(app: FastifyInstance, db: Db): Promise<void> {
const guard = requirePermission("report:read");
// The whole dashboard in one call: totals, the time series, peak-hour histogram, and
// subscription stats — aggregated server-side so the SPA just renders. Bucketed in the
// site timezone. See reports.ts.
app.get<{ Querystring: { from?: string; to?: string; bucket?: string } }>(
"/api/reports/summary",
{ preHandler: guard },
async (req) => reportSummary(db, parseQuery(req.query)),
);
// The same series as CSV (one row per bucket) for spreadsheet / accountant export.
// Amounts are in MAJOR units with 2 decimals here (a CSV is for humans/Excel), unlike
// the JSON which stays in minor units. text/csv with a download filename.
app.get<{ Querystring: { from?: string; to?: string; bucket?: string } }>(
"/api/reports/summary.csv",
{ preHandler: guard },
async (req, reply) => {
const summary = reportSummary(db, parseQuery(req.query));
const lines = [
"bucket,entries,exits,payments,revenue,cash,card,occupancy_end",
...summary.series.map((p) =>
[
p.bucket,
p.entries,
p.exits,
p.payments,
(p.revenueMinor / 100).toFixed(2),
(p.cashMinor / 100).toFixed(2),
(p.cardMinor / 100).toFixed(2),
p.occupancyEnd,
].join(","),
),
];
reply
.header("content-type", "text/csv; charset=utf-8")
.header(
"content-disposition",
`attachment; filename="parking-report-${summary.from.slice(0, 10)}_${summary.to.slice(0, 10)}.csv"`,
)
.send(lines.join("\n") + "\n");
},
);
}