feat(simulations): autosave 30s + localStorage + reprise contenu (FTD-21)
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4 changed files with 244 additions and 1 deletions
72
src/features/simulations/hooks/useAutosave.ts
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72
src/features/simulations/hooks/useAutosave.ts
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/**
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* FTD-21 — autosave du contenu d'une simulation en cours.
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*
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* Debounce 30 s sur chaque changement de `contenu`. Flush immédiat au
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* `beforeunload` (best-effort : la promesse peut ne pas aboutir si la page
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* se ferme avant la réponse — le texte reste en `localStorage` côté texte
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* utilisateur + state parent).
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*
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* Dédoublonnage : aucun appel réseau si le contenu n'a pas changé depuis
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* le dernier save réussi.
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*
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* Règle H : pas de logique métier — wrap autour de `entities/production/api.autosaveContenu`.
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*/
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import { useCallback, useEffect, useRef, useState } from 'react'
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import { autosaveContenu } from '@/entities/production/api'
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const DEBOUNCE_MS = 30_000
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export interface UseAutosaveResult {
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savedAt: Date | null
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isSaving: boolean
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}
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export function useAutosave(
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simulationId: string | null,
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contenu: string,
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enabled: boolean,
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): UseAutosaveResult {
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const [savedAt, setSavedAt] = useState<Date | null>(null)
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const [isSaving, setIsSaving] = useState(false)
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const lastSavedContenuRef = useRef<string | null>(null)
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const latestRef = useRef({ simulationId, contenu, enabled })
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latestRef.current = { simulationId, contenu, enabled }
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const flush = useCallback(async () => {
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const { simulationId, contenu, enabled } = latestRef.current
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if (!enabled || !simulationId || !contenu) return
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if (lastSavedContenuRef.current === contenu) return
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setIsSaving(true)
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try {
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await autosaveContenu(simulationId, contenu)
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lastSavedContenuRef.current = contenu
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setSavedAt(new Date())
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} catch {
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// best-effort — pas d'UI d'erreur, le texte reste en mémoire côté client
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} finally {
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setIsSaving(false)
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}
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}, [])
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useEffect(() => {
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if (!enabled || !simulationId || !contenu) return
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if (lastSavedContenuRef.current === contenu) return
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const timer = setTimeout(() => {
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void flush()
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}, DEBOUNCE_MS)
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return () => clearTimeout(timer)
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}, [simulationId, contenu, enabled, flush])
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useEffect(() => {
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const handler = () => {
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void flush()
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}
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window.addEventListener('beforeunload', handler)
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return () => window.removeEventListener('beforeunload', handler)
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}, [flush])
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return { savedAt, isSaving }
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}
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