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// lib/rateprobability.ts
// Données de probabilités de taux — sources : CME FedWatch + Investing.com
// Collectées par GitHub Actions (toutes les heures) → data/rate-probabilities.json
// InvestingLive (Giuseppe Dellamotta) en enrichissement CHF + deltas hebdo
import { readFileSync, writeFileSync } from "fs";
import { join } from "path";
import type { Currency } from "./types";
import { fetchILExpectationsWithHistory } from "./investinglive";
import type { ILExpectationsMap, ILExpectationsWithHistory } from "./investinglive";
// ── Cache fichier pour les données InvestingLive (évite 56 HTTP HEAD par appel) ──
const IL_CACHE_FILE = join(process.cwd(), "data", "il-enrichment-cache.json");
const IL_CACHE_TTL = 2 * 60 * 60 * 1000; // 2h
async function getCachedILHistory(): Promise<ILExpectationsWithHistory> {
try {
const raw = readFileSync(IL_CACHE_FILE, "utf8");
const cached = JSON.parse(raw) as { ts: number; data: ILExpectationsWithHistory };
if (Date.now() - cached.ts < IL_CACHE_TTL) {
console.log(`[IL-cache] HIT (${Math.round((Date.now() - cached.ts) / 60000)}min old)`);
return cached.data;
}
console.log("[IL-cache] STALE — refetch");
} catch {
console.log("[IL-cache] MISS — premier fetch");
}
const data = await fetchILExpectationsWithHistory();
try {
writeFileSync(IL_CACHE_FILE, JSON.stringify({ ts: Date.now(), data }));
} catch { /* /tmp read-only en prod Vercel — ignoré */ }
return data;
}
// ── Types publics ──────────────────────────────────────────────────────────────
export interface RateProbMeeting {
label: string; // "Jun 11" — 6 chars max
dateIso: string; // "2026-06-11"
impliedRate: number; // taux implicite post-réunion
probMovePct: number; // 0100 : probabilité d'un mouvement
probIsCut: boolean; // true = baisse, false = hausse
changeBps: number; // bps attendus à cette réunion (cumulatif)
}
export interface ILWeeklyDelta {
probDelta: number; // Δ nextMeetingProbPct (courant - semaine précédente)
bpsDelta: number; // Δ bpsYearEnd (courant - semaine précédente)
isCut: boolean; // contexte : le pic actuel est un cut
prevDate: string; // date de l'article de référence (semaine précédente)
}
export interface ILCurrent {
bpsYearEnd: number; // bps fin d'an selon l'article IL courant
probPct: number; // probabilité de move à la prochaine réunion (IL analyste)
stirProbPct?: number; // probabilité originale STIR/IC (avant fusion IL)
isNoChange: boolean; // l'analyste anticipe un statu quo
isCut: boolean; // l'analyste anticipe une baisse
articleDate: string; // date de publication de l'article (YYYY-MM-DD)
}
export interface CBRatePath {
currency: Currency;
asOf: string; // "2026-05-31"
currentRate: number;
meetings: RateProbMeeting[];
peakMeeting: RateProbMeeting | null; // réunion avec proba max de mouvement
yearEndImplied: number | null; // taux impliqué à la dernière réunion connue (SOFR)
ilCurrent?: ILCurrent; // valeurs absolues de l'article IL courant
ilDelta?: ILWeeklyDelta; // delta vs article IL semaine précédente
prevMeetings?: RateProbMeeting[]; // réunions semaine précédente (snapshot RP)
prevWeekDate?: string; // date du snapshot semaine précédente
history?: Array<{ date: string; meetings: RateProbMeeting[] }>; // snapshots hebdo accumulés
instrumentSource?: string; // instrument réellement utilisé pour produire ces données (ground truth, écrit par le pipeline de fetch)
}
export type RateProbData = Partial<Record<Currency, CBRatePath>>;
// ── Currencies suivies ─────────────────────────────────────────────────────────
const CB_KEYS: Currency[] = ["USD","EUR","GBP","JPY","CAD","AUD","NZD"];
// Heures UTC approximatives des annonces
const ANNOUNCE_UTC: Partial<Record<Currency, number>> = {
USD: 18, EUR: 12, GBP: 11, JPY: 2, CAD: 14, AUD: 3, NZD: 2, CHF: 8,
};
// Titres pour le calendrier
const MEETING_TITLES: Partial<Record<Currency, string>> = {
USD: "FOMC — Décision taux Fed",
EUR: "BCE — Governing Council",
GBP: "BoE MPC — Décision taux",
JPY: "BoJ — Policy Board",
CAD: "BoC — Décision taux",
AUD: "RBA — Décision taux",
NZD: "RBNZ — Décision taux",
CHF: "SNB — Décision taux",
};
// ── Extraction des champs (nommage hétérogène selon les CB) ───────────────────
// .github/scripts/fetch-rate-data.mjs écrit toujours "midpoint", quelle que soit
// la devise (CME/Investing.com/InvestingLive écrivent tous le même schéma). Les
// noms par devise ci-dessous ("current_target", "cash_rate_target"…) datent de
// l'ancienne source rateprobability.com (remplacée par le commit 2673686) et ne
// sont plus jamais écrits par le pipeline actuel — d'où le "0.00%" affiché pour
// toute devise autre que USD/NZD (les deux seules à retomber sur "midpoint").
function getCurrentRate(ccy: Currency, today: Record<string, unknown>): number {
if (typeof today["midpoint"] === "number") return today["midpoint"] as number;
switch (ccy) {
case "EUR": return (today["ecb_main_refinancing"] as number) ?? (today["ecb_deposit_facility"] as number) ?? 0;
case "GBP": return (today["current_target"] as number) ?? 0;
case "JPY": return (today["current_target"] as number) ?? 0;
case "CAD": return (today["Overnight Rate Target"] as number) ?? 0;
case "AUD": return (today["cash_rate_target"] as number) ?? 0;
case "NZD": return (today["Official Cash Rate (OCR)"] as number) ?? (today["current_target"] as number) ?? 0;
default: return 0;
}
}
function getAsOf(today: Record<string, unknown>): string {
const raw = String(today["As of"] ?? today["as_of"] ?? today["run_date"] ?? "");
return raw.slice(0, 10);
}
// ── Calendriers officiels par banque centrale ─────────────────────────────────
// Utilisés pour les CB sans page Investing.com dédiée (ou dont le fallback IL
// n'a qu'un seul point "year-end") : on construit une vraie courbe multi-réunions
// à partir des dates réelles + de l'estimation InvestingLive (proba/direction).
// Sources officielles, à mettre à jour quand chaque banque publie son calendrier
// suivant (généralement 1x/an) :
// SNB : snb.ch/en/the-snb/mandates-goals/monetary-policy/decisions
// RBNZ : rbnz.govt.nz
// ECB : ecb.europa.eu/press/calendars/mgcgc (jour 2 = décision + conf. presse)
// BoE : bankofengland.co.uk/monetary-policy/upcoming-mpc-dates
// BoJ : boj.or.jp/en/mopo/mpmsche_minu (2027 pas encore publié à l'écriture de ceci)
// BoC : bankofcanada.ca (annonce annuelle du calendrier, pas encore publié pour 2027)
// RBA : rba.gov.au/schedules-events/board-meeting-schedules.html (jour 2 = décision)
const SNB_MEETINGS: string[] = [
"2026-06-19", "2026-09-25", "2026-12-11",
"2027-03-18", "2027-06-17", "2027-09-23", "2027-12-09",
];
const RBNZ_MEETINGS: string[] = [
"2026-07-09", "2026-08-19", "2026-10-14", "2026-11-25",
"2027-02-24", "2027-04-09", "2027-05-26", "2027-07-14",
"2027-08-18", "2027-10-13", "2027-11-24",
];
const ECB_MEETINGS: string[] = [
"2026-07-23", "2026-09-10", "2026-10-29", "2026-12-17",
"2027-02-04", "2027-03-18", "2027-04-29", "2027-06-10",
"2027-07-22", "2027-09-09", "2027-10-28", "2027-12-16",
];
const BOE_MEETINGS: string[] = [
"2026-07-30", "2026-09-17", "2026-11-05", "2026-12-17",
"2027-02-04", "2027-03-18", "2027-04-29", "2027-06-17",
"2027-07-29", "2027-09-16", "2027-11-04", "2027-12-16",
];
const BOJ_MEETINGS: string[] = [
"2026-07-31", "2026-09-18", "2026-10-30", "2026-12-18",
];
const BOC_MEETINGS: string[] = [
"2026-07-15", "2026-09-02", "2026-10-28", "2026-12-09",
];
const RBA_MEETINGS: string[] = [
"2026-08-11", "2026-09-29", "2026-11-03", "2026-12-08",
"2027-02-09", "2027-03-23", "2027-05-04", "2027-06-22",
"2027-08-10", "2027-09-28", "2027-11-02", "2027-12-14",
];
// Construit un CBRatePath depuis un calendrier officiel + l'estimation InvestingLive
// (proba/direction de la prochaine réunion, biais year-end pour les suivantes).
function buildOfficialCalendarPath(
currency: Currency,
officialMeetings: string[],
il: ILExpectationsMap,
currentRate: number,
): CBRatePath | null {
const ilData = il[currency];
if (!ilData) return null;
const nowIso = new Date().toISOString().slice(0, 10);
const upcomingMeetings = officialMeetings.filter(d => d >= nowIso);
if (upcomingMeetings.length === 0) return null;
const yearEndIsCut = ilData.bpsYearEnd < 0;
const meetings: RateProbMeeting[] = upcomingMeetings.map((dateIso, i) => {
const isNext = i === 0;
const probMovePct = isNext ? ilData.nextMeetingProbPct : 0;
const probIsCut = isNext
? (ilData.nextMeetingIsNoChange ? yearEndIsCut : !ilData.nextMeetingIsHike)
: yearEndIsCut;
const changeBps = isNext ? (probMovePct > 50 ? (probIsCut ? -25 : 25) : 0) : 0;
const impliedRate = isNext && probMovePct > 50
? parseFloat((currentRate + (probIsCut ? -0.25 : 0.25)).toFixed(4))
: currentRate;
return { label: dateIso.slice(0, 7), dateIso, impliedRate, probMovePct, probIsCut, changeBps };
});
const peakMeeting = meetings.reduce((best, m) =>
m.probMovePct > best.probMovePct ? m : best, meetings[0]
);
return {
currency,
asOf: ilData.publishedDate,
currentRate,
meetings,
peakMeeting: peakMeeting.probMovePct > 0 ? peakMeeting : null,
yearEndImplied: meetings.at(-1)?.impliedRate ?? null,
instrumentSource: "InvestingLive — estimation hebdomadaire analyste (pas de futures/OIS coté public pour cette devise) + calendrier officiel de réunions",
};
}
// ── Fallback : data JSON committé par GitHub Actions ─────────────────────────
function loadCachedRPBody(ccy: string, _slug: string): Record<string, unknown> | null {
try {
const filePath = join(process.cwd(), "data", "rate-probabilities.json");
const raw = readFileSync(filePath, "utf8");
const parsed = JSON.parse(raw) as { data: Record<string, unknown>; fetchedAt: string };
const entry = parsed.data?.[ccy] as Record<string, unknown> | undefined;
if (!entry) return null;
const ageMs = Date.now() - new Date(parsed.fetchedAt).getTime();
if (ageMs > 168 * 60 * 60 * 1000) { // ignore si > 7 jours
console.warn(`[rate-prob] cache stale (${Math.round(ageMs / 3600000)}h), skipping`);
return null;
}
console.log(`[rate-prob] ${ccy} loaded from GitHub Actions cache (${Math.round(ageMs / 60000)}min old)`);
return entry;
} catch { return null; }
}
function loadHistorySnapshots(): Array<{ date: string; raw: Record<string, unknown> }> {
try {
const filePath = join(process.cwd(), "data", "rate-probabilities.json");
const raw = readFileSync(filePath, "utf8");
const parsed = JSON.parse(raw) as { snapshots?: Array<{ data: Record<string, unknown>; fetchedAt: string }> };
if (!parsed.snapshots?.length) return [];
return parsed.snapshots.map(s => ({ date: s.fetchedAt.slice(0, 10), raw: s.data }));
} catch { return []; }
}
function loadPrevWeekCachedBody(ccy: string): { body: Record<string, unknown>; date: string } | null {
try {
const filePath = join(process.cwd(), "data", "rate-probabilities.json");
const raw = readFileSync(filePath, "utf8");
const parsed = JSON.parse(raw) as { previousWeek?: Record<string, unknown>; previousWeekFetchedAt?: string };
if (!parsed.previousWeek || !parsed.previousWeekFetchedAt) return null;
const entry = parsed.previousWeek[ccy] as Record<string, unknown> | undefined;
if (!entry) return null;
const ageMs = Date.now() - new Date(parsed.previousWeekFetchedAt).getTime();
// Le snapshot semaine précédente doit dater de 4 à 10 jours
if (ageMs < 3 * 86400000 || ageMs > 11 * 86400000) return null;
return { body: entry, date: parsed.previousWeekFetchedAt.slice(0, 10) };
} catch { return null; }
}
// Reparse un body brut de rateprobability.com (même format que fetchCBPath)
function parseCBBody(ccy: Currency, body: Record<string, unknown>): CBRatePath | null {
const today = body["today"] as Record<string, unknown> | undefined;
if (!today) return null;
const currentRate = getCurrentRate(ccy, today);
const asOf = getAsOf(today);
const nowIso = new Date().toISOString().slice(0, 10);
const maxIso = new Date(Date.now() + 380 * 86400000).toISOString().slice(0, 10);
const rawRows = (today["rows"] as Array<Record<string, unknown>> | undefined) ?? [];
const meetings: RateProbMeeting[] = rawRows
.filter(r => typeof r["meeting_iso"] === "string" && (r["meeting_iso"] as string) >= nowIso && (r["meeting_iso"] as string) <= maxIso)
.map(r => ({
label: (r["meeting"] as string).slice(0, 6),
dateIso: r["meeting_iso"] as string,
impliedRate: parseFloat(String(r["implied_rate_post_meeting"] ?? currentRate)),
probMovePct: parseFloat(String(r["prob_move_pct"] ?? 0)),
probIsCut: Boolean(r["prob_is_cut"]),
changeBps: parseFloat(String(r["change_bps"] ?? 0)),
}));
if (!meetings.length) return null;
const peakMeeting = meetings.reduce((best, m) => m.probMovePct > best.probMovePct ? m : best, meetings[0]);
const currentYear = new Date().getFullYear();
const meetsThisYear = meetings.filter(m => m.dateIso <= `${currentYear}-12-31`);
const yearEndImplied = meetsThisYear.length > 0 ? meetsThisYear.at(-1)!.impliedRate : meetings[0].impliedRate;
const instrumentSource = typeof today["source"] === "string" ? today["source"] as string : undefined;
return { currency: ccy, asOf, currentRate, meetings, peakMeeting, yearEndImplied, instrumentSource };
}
// ── Fetch toutes les CB — depuis le cache GitHub Actions + enrichissement IL ───
export async function fetchAllCBPaths(): Promise<RateProbData> {
// GitHub Actions met à jour data/rate-probabilities.json toutes les heures
// (CME FedWatch pour USD, Investing.com pour les autres, InvestingLive en fallback)
const [ilHistory] = await Promise.all([getCachedILHistory()]);
const ilData = ilHistory.current;
const ilPrev = ilHistory.prev;
const prevDate = ilHistory.prevDate;
const data: RateProbData = {};
// Charge depuis le cache JSON (GitHub Actions)
for (const ccy of CB_KEYS) {
const cachedBody = loadCachedRPBody(ccy, ccy.toLowerCase());
if (cachedBody) {
const parsed = parseCBBody(ccy, cachedBody);
if (parsed) data[ccy] = parsed;
}
}
// Enrichissement prevMeetings depuis snapshot semaine précédente
for (const ccy of CB_KEYS) {
const path = data[ccy];
if (!path) continue;
const prev = loadPrevWeekCachedBody(ccy);
if (!prev) continue;
const prevPath = parseCBBody(ccy, prev.body);
if (prevPath?.meetings.length) {
data[ccy] = { ...path, prevMeetings: prevPath.meetings, prevWeekDate: prev.date };
}
}
// Historique multi-semaines (snapshots accumulés par GitHub Actions)
const historySnaps = loadHistorySnapshots();
if (historySnaps.length) {
for (const ccy of CB_KEYS) {
const path = data[ccy];
if (!path) continue;
const history: CBRatePath["history"] = [];
for (const snap of historySnaps) {
const entry = snap.raw[ccy] as Record<string, unknown> | undefined;
if (!entry) continue;
const snapPath = parseCBBody(ccy, entry);
if (snapPath?.meetings.length) {
history.push({ date: snap.date, meetings: snapPath.meetings });
}
}
if (history.length) data[ccy] = { ...path, history };
}
}
// Investing.com n'a de Rate Monitor que pour la Fed (USD) — toutes les autres
// devises retombent sur le fallback InvestingLive, qui n'a qu'un seul point
// "year-end" (buildILFallback dans fetch-rate-data.mjs). On reconstruit ici une
// vraie courbe multi-réunions à partir du calendrier officiel de chaque CB +
// de l'estimation InvestingLive (proba/direction), comme déjà fait pour NZD/CHF.
const OFFICIAL_CALENDARS: Partial<Record<Currency, { meetings: string[]; fallbackRate: number }>> = {
CHF: { meetings: SNB_MEETINGS, fallbackRate: 0.00 },
NZD: { meetings: RBNZ_MEETINGS, fallbackRate: 2.25 },
EUR: { meetings: ECB_MEETINGS, fallbackRate: 2.15 },
GBP: { meetings: BOE_MEETINGS, fallbackRate: 3.75 },
JPY: { meetings: BOJ_MEETINGS, fallbackRate: 0.75 },
CAD: { meetings: BOC_MEETINGS, fallbackRate: 2.25 },
AUD: { meetings: RBA_MEETINGS, fallbackRate: 4.35 },
};
for (const [ccyStr, cal] of Object.entries(OFFICIAL_CALENDARS)) {
const ccy = ccyStr as Currency;
if (!cal) continue;
// Reconstruit si aucune donnée, ou si le fallback IL n'a mis qu'un seul point.
if ((data[ccy] && data[ccy]!.meetings.length > 1) || !ilData[ccy]) continue;
const rate = data[ccy]?.currentRate || cal.fallbackRate;
const path = buildOfficialCalendarPath(ccy, cal.meetings, ilData, rate);
if (path) data[ccy] = path;
}
// Enrichissement IL : fusion proba première réunion + deltas hebdo
2026-06-03 00:02:09 +02:00
for (const [ccyStr, ilEntry] of Object.entries(ilData)) {
const ccy = ccyStr as keyof RateProbData;
const path = data[ccy];
if (!path) continue;
if (typeof ilEntry.bpsYearEnd !== "number") continue;
if (ilEntry.nextMeetingIsNoChange && Math.abs(ilEntry.bpsYearEnd) < 5) continue;
2026-06-03 00:02:09 +02:00
// Giuseppe lit le STIR complet (toutes les réunions jusqu'en déc) et publie le cumul bps year-end.
// Le Rate Monitor Investing.com ne capture parfois que 2-3 réunions → yearEndImplied partiel.
// → On utilise toujours Giuseppe comme source authoritative pour le cumul fin d'année.
const yearEndImplied = parseFloat((path.currentRate + ilEntry.bpsYearEnd / 100).toFixed(4));
let ilDelta: ILWeeklyDelta | undefined;
const prevEntry = ilPrev[ccy];
if (prevEntry && prevDate) {
ilDelta = {
probDelta: parseFloat((ilEntry.nextMeetingProbPct - prevEntry.nextMeetingProbPct).toFixed(1)),
bpsDelta: ilEntry.bpsYearEnd - prevEntry.bpsYearEnd,
isCut: ilEntry.bpsYearEnd < 0,
prevDate,
};
}
const ilProb = ilEntry.nextMeetingProbPct;
// Direction basée sur le signe de bpsYearEnd (plus fiable que nextMeetingIsHike
// qui est faux quand Giuseppe dit "no change" à la prochaine réunion mais hausse year-end)
const ilIsCut = ilEntry.bpsYearEnd < 0;
const m0 = path.meetings[0];
const stirProb = m0?.probMovePct ?? 0;
const ilCurrent: ILCurrent = {
bpsYearEnd: ilEntry.bpsYearEnd,
probPct: ilProb,
stirProbPct: stirProb || undefined,
isNoChange: ilEntry.nextMeetingIsNoChange,
isCut: ilIsCut,
articleDate: ilEntry.publishedDate,
};
// Fusion STIR + IL pour la première réunion :
// Si l'IL a une proba valide ET qu'elle diffère du STIR de plus de 8pp → on fusionne
// (le STIR IC peut avoir des artefacts de parsing ; l'analyste IL lit la même donnée proprement)
let updatedMeetings = path.meetings;
if (m0 && ilProb > 0 && !ilEntry.nextMeetingIsNoChange && Math.abs(ilProb - stirProb) > 8) {
const updatedM0: RateProbMeeting = {
...m0,
probMovePct: ilProb,
probIsCut: ilIsCut,
changeBps: ilProb > 50 ? (ilIsCut ? -25 : 25) : 0,
impliedRate: ilProb > 50
? parseFloat((path.currentRate + (ilIsCut ? -0.25 : 0.25)).toFixed(4))
: path.currentRate,
};
updatedMeetings = [updatedM0, ...path.meetings.slice(1)];
}
// Recalcule peakMeeting après fusion
const peakMeeting = updatedMeetings.length
? updatedMeetings.reduce((best, m) => m.probMovePct > best.probMovePct ? m : best, updatedMeetings[0])
: null;
data[ccy] = {
...path,
meetings: updatedMeetings,
peakMeeting: peakMeeting && peakMeeting.probMovePct > 0 ? peakMeeting : path.peakMeeting,
yearEndImplied,
ilCurrent,
...(ilDelta ? { ilDelta } : {}),
};
2026-06-03 00:02:09 +02:00
}
return data;
}
// ── Helper calendrier : dates de réunions extraites des paths ─────────────────
export interface CBMeetingEvent {
currency: Currency;
dateIso: string;
utcHour: number;
title: string;
probMovePct: number;
probIsCut: boolean;
changeBps: number;
}
export function extractMeetingEvents(data: RateProbData, fromDate: string): CBMeetingEvent[] {
const events: CBMeetingEvent[] = [];
for (const entry of Object.entries(data) as [Currency, CBRatePath][]) {
const [ccy, path] = entry;
const utcHour = ANNOUNCE_UTC[ccy] ?? 12;
const title = MEETING_TITLES[ccy] ?? `Décision taux ${ccy}`;
for (const m of path.meetings) {
if (m.dateIso < fromDate) continue;
events.push({ currency: ccy, dateIso: m.dateIso, utcHour, title, probMovePct: m.probMovePct, probIsCut: m.probIsCut, changeBps: m.changeBps });
}
}
return events;
}