Suriyakumarvijayanayagam
dad04e8cda
Five components that ship as one product:
- behavision/ the recognition engine. RTSP ingest, YuNet detection, IoU
tracking, ArcFace embeddings, a FAISS/SQLite gallery, and a
FastAPI dashboard. Identity is decided once per TRACK from an
average of at least three embeddings, never per frame.
- agent/ the Go edge agent: supervises the engine, holds a durable
spool, and drains it to MQTT. Nothing is acked before the
broker confirms.
- desktop/ the shop PC application (Wails + React + tray).
- server/ the cloud API, MQTT consumer, reports and assistant.
- web/ platform.loyaly.ai, the head-office app, embedded in the
server binary.
The gallery stores 512-float embeddings and timestamps - no images unless
`app.store_faces` is switched on. Those embeddings are biometric personal
data under GDPR and India's DPDP: template inversion reconstructs a
recognisable face from an ArcFace vector, so data/behavision.db is treated
as a biometric database and DELETE /api/visitors/{id} is a real erasure.
CLAUDE.md carries the reasoning behind every non-obvious decision here,
including the ones that were measured and the ones that were wrong first.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HViLj9gYNRtSr7YVZmW5sn
66 lines
2.1 KiB
JavaScript
66 lines
2.1 KiB
JavaScript
import { useCallback, useEffect, useRef, useState } from 'react'
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import { message } from './bridge.js'
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// One hook for every screen that loads and refreshes.
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//
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// It exists because the naive version has two bugs every screen would repeat:
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// a slow response arriving after the user navigated away sets state on an
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// unmounted component, and a poll that fires while the previous request is
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// still running stacks up requests against an engine that is already slow.
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export function usePolled(fn, intervalMs, deps = []) {
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const [data, setData] = useState(null)
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const [error, setError] = useState(null)
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const [loading, setLoading] = useState(true)
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const alive = useRef(true)
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const busy = useRef(false)
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const run = useCallback(async () => {
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if (busy.current) return
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busy.current = true
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try {
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const result = await fn()
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if (!alive.current) return
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setData(result)
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setError(null)
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} catch (err) {
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if (alive.current) setError(message(err))
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} finally {
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busy.current = false
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if (alive.current) setLoading(false)
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}
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// eslint-disable-next-line react-hooks/exhaustive-deps
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}, deps)
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useEffect(() => {
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alive.current = true
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run()
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if (!intervalMs) return () => { alive.current = false }
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const id = setInterval(run, intervalMs)
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return () => { alive.current = false; clearInterval(id) }
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}, [run, intervalMs])
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return { data, error, loading, reload: run }
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}
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export function fmtTime(ts) {
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if (!ts) return '—'
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const d = typeof ts === 'number' ? new Date(ts * 1000) : new Date(ts)
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if (isNaN(d)) return '—'
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return d.toLocaleTimeString([], { hour: '2-digit', minute: '2-digit' })
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}
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export function fmtDate(ts) {
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if (!ts) return '—'
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const d = typeof ts === 'number' ? new Date(ts * 1000) : new Date(ts)
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if (isNaN(d)) return '—'
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return d.toLocaleDateString([], { day: 'numeric', month: 'short' })
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}
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export function daysAgo(n) {
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const d = new Date()
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d.setDate(d.getDate() - n)
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return d.toISOString().slice(0, 10)
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}
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export function today() { return new Date().toISOString().slice(0, 10) }
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