add correct backfile

Signed-off-by: GnomeZworc <nicolas.boufidjeline@g3e.fr>

cmd/api/main.go

@@ -41,11 +41,11 @@ func main() {
 	logger.Info("database connected")
 
 	st := store.New(pool)
-	snap := snapshot.New(st, logger, cfg.SnapshotHorizonDays)
 	pl := pipeline.New(st, pipeline.Config{
 		OpenFIGIKey:  cfg.OpenFIGIKey,
 		CoinGeckoKey: cfg.CoinGeckoKey,
 	}, logger)
+	snap := snapshot.New(st, logger, cfg.SnapshotHorizonDays).WithBackfiller(pl)
 
 	sched := scheduler.New(logger)
 	sched.Add(scheduler.Job{

internal/handler/snapshot.go

@@ -42,6 +42,7 @@ func (h *SnapshotHandler) RegisterRoutes(mux *http.ServeMux) {
 	mux.HandleFunc("GET  /accounts/{id}/snapshots",           h.listAccountSnapshots)
 	mux.HandleFunc("GET  /accounts/{id}/snapshots/positions", h.listPositionSnapshots)
 	mux.HandleFunc("POST /accounts/{id}/snapshots/recompute", h.recomputeAccount)
+	mux.HandleFunc("GET  /snapshots/pending",                 h.listPending)
 }
 
 // parseDateParam parse un paramètre de query YYYY-MM-DD. Retourne time.Time{} si absent.
@@ -53,6 +54,33 @@ func parseDateParam(r *http.Request, key string) (time.Time, error) {
 	return time.Parse("2006-01-02", v)
 }
 
+// GET /snapshots/pending
+// Liste les comptes de l'owner ayant une invalidation en attente.
+func (h *SnapshotHandler) listPending(w http.ResponseWriter, r *http.Request) {
+	ownerID, ok := requireOwner(w, r)
+	if !ok {
+		return
+	}
+	invalidations, err := h.engine.Store().GetInvalidationsForOwner(r.Context(), ownerID)
+	if err != nil {
+		writeError(w, http.StatusInternalServerError, err.Error())
+		return
+	}
+
+	type row struct {
+		AccountID     int32  `json:"account_id"`
+		RecomputeFrom string `json:"recompute_from"`
+	}
+	out := make([]row, 0, len(invalidations))
+	for _, inv := range invalidations {
+		out = append(out, row{
+			AccountID:     inv.AccountID,
+			RecomputeFrom: inv.RecomputeFrom.Format("2006-01-02"),
+		})
+	}
+	writeJSON(w, http.StatusOK, out)
+}
+
 // GET /accounts/{id}/snapshots?from=YYYY-MM-DD&to=YYYY-MM-DD
 // Liste les snapshots agrégés (valeur totale) d'un compte.
 // from/to optionnels : sans borne → pas de filtre de ce côté.

internal/pipeline/coingecko.go

@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"net/http"
 	"strings"
+	"time"
 )
 
 // ResolveCryptoID résout un ticker crypto (ex: "BTC") en ID CoinGecko (ex: "bitcoin").
@@ -46,6 +47,48 @@ func ResolveCryptoID(ctx context.Context, apiKey, ticker string) (string, error)
 	return "", fmt.Errorf("no coingecko match for ticker %s", ticker)
 }
 
+// FetchCoinGeckoHistory récupère les prix EUR journaliers entre from et to pour un coin.
+func FetchCoinGeckoHistory(ctx context.Context, apiKey, coinID string, from, to time.Time) ([]PricePoint, error) {
+	baseURL := "https://api.coingecko.com/api/v3"
+	if apiKey != "" {
+		baseURL = "https://pro-api.coingecko.com/api/v3"
+	}
+
+	url := fmt.Sprintf("%s/coins/%s/market_chart/range?vs_currency=eur&from=%d&to=%d",
+		baseURL, coinID, from.Unix(), to.Unix())
+
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
+	if err != nil {
+		return nil, err
+	}
+	if apiKey != "" {
+		req.Header.Set("x-cg-pro-api-key", apiKey)
+	}
+
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	// Réponse : {"prices": [[timestamp_ms, price], ...]}
+	var raw struct {
+		Prices [][2]float64 `json:"prices"`
+	}
+	if err := json.NewDecoder(resp.Body).Decode(&raw); err != nil {
+		return nil, fmt.Errorf("decode coingecko history: %w", err)
+	}
+
+	points := make([]PricePoint, 0, len(raw.Prices))
+	for _, p := range raw.Prices {
+		points = append(points, PricePoint{
+			At:    time.UnixMilli(int64(p[0])).UTC(),
+			Price: p[1],
+		})
+	}
+	return points, nil
+}
+
 // FetchCoinGeckoPrices récupère les prix EUR pour une liste d'IDs CoinGecko.
 // Le ticker stocké dans instrument_ticker_cache doit être l'ID CoinGecko (ex: "bitcoin", "ethereum").
 func FetchCoinGeckoPrices(ctx context.Context, apiKey string, coinIDs []string) (map[string]float64, error) {

internal/pipeline/pipeline.go

@@ -2,6 +2,7 @@ package pipeline
 
 import (
 	"context"
+	"fmt"
 	"log/slog"
 	"time"
 
@@ -90,6 +91,54 @@ func (p *Pipeline) FetchAll(ctx context.Context) error {
 	return nil
 }
 
+// BackfillInstrument récupère l'historique de prix d'un instrument entre from et to
+// et upserte chaque point dans price_history. Idempotent.
+func (p *Pipeline) BackfillInstrument(ctx context.Context, instrumentID int32, from, to time.Time) error {
+	inst, err := p.store.GetInstrument(ctx, instrumentID)
+	if err != nil {
+		return fmt.Errorf("get instrument %d: %w", instrumentID, err)
+	}
+
+	switch inst.Type {
+	case "devise":
+		return nil // EUR toujours = 1, pas de backfill nécessaire
+
+	case "action", "etf":
+		ticker, err := p.resolveTicker(ctx, inst)
+		if err != nil {
+			return fmt.Errorf("resolve ticker for %s: %w", inst.Code, err)
+		}
+		points, err := FetchYahooHistory(ctx, ticker, from, to)
+		if err != nil {
+			return fmt.Errorf("yahoo history %s: %w", ticker, err)
+		}
+		for _, pt := range points {
+			if err := p.store.UpsertPrice(ctx, inst.ID, pt.At, pt.Price); err != nil {
+				p.logger.Error("upsert historical price", "instrument", inst.Code, "date", pt.At, "error", err)
+			}
+		}
+		p.logger.Info("backfill done", "instrument", inst.Code, "points", len(points))
+
+	case "crypto":
+		coinID, err := p.resolveCoinID(ctx, inst)
+		if err != nil {
+			return fmt.Errorf("resolve coin id for %s: %w", inst.Code, err)
+		}
+		points, err := FetchCoinGeckoHistory(ctx, p.cfg.CoinGeckoKey, coinID, from, to)
+		if err != nil {
+			return fmt.Errorf("coingecko history %s: %w", coinID, err)
+		}
+		for _, pt := range points {
+			if err := p.store.UpsertPrice(ctx, inst.ID, pt.At, pt.Price); err != nil {
+				p.logger.Error("upsert historical price", "instrument", inst.Code, "date", pt.At, "error", err)
+			}
+		}
+		p.logger.Info("backfill done", "instrument", inst.Code, "points", len(points))
+	}
+
+	return nil
+}
+
 // CleanHistory supprime les prix intraday des jours passés, ne gardant que le dernier par instrument.
 func (p *Pipeline) CleanHistory(ctx context.Context) error {
 	if err := p.store.CleanPastDays(ctx); err != nil {

internal/pipeline/yahoo.go

@@ -5,6 +5,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"net/http"
+	"time"
 )
 
 type yahooChart struct {
@@ -14,6 +15,12 @@ type yahooChart struct {
 				RegularMarketPrice float64 `json:"regularMarketPrice"`
 				Currency           string  `json:"currency"`
 			} `json:"meta"`
+			Timestamps []int64 `json:"timestamp"`
+			Indicators struct {
+				Quote []struct {
+					Close []*float64 `json:"close"`
+				} `json:"quote"`
+			} `json:"indicators"`
 		} `json:"result"`
 		Error *struct{ Description string } `json:"error"`
 	} `json:"chart"`
@@ -23,33 +30,79 @@ type yahooChart struct {
 func FetchYahooPrice(ctx context.Context, ticker string) (float64, error) {
 	url := fmt.Sprintf(
 		"https://query1.finance.yahoo.com/v8/finance/chart/%s?interval=1d&range=1d", ticker)
+	return fetchYahoo(ctx, url, ticker)
+}
 
-	req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
+// FetchYahooHistory récupère les prix de clôture journaliers entre from et to.
+// Retourne une slice de (time, price) pour chaque jour ayant une clôture non nulle.
+func FetchYahooHistory(ctx context.Context, ticker string, from, to time.Time) ([]PricePoint, error) {
+	url := fmt.Sprintf(
+		"https://query1.finance.yahoo.com/v8/finance/chart/%s?interval=1d&period1=%d&period2=%d",
+		ticker, from.Unix(), to.Unix())
+
+	chart, err := fetchYahooChart(ctx, url, ticker)
+	if err != nil {
+		return nil, err
+	}
+	if len(chart.Chart.Result) == 0 || len(chart.Chart.Result[0].Indicators.Quote) == 0 {
+		return nil, nil
+	}
+
+	res := chart.Chart.Result[0]
+	closes := res.Indicators.Quote[0].Close
+	var points []PricePoint
+	for i, ts := range res.Timestamps {
+		if i >= len(closes) || closes[i] == nil || *closes[i] == 0 {
+			continue
+		}
+		points = append(points, PricePoint{
+			At:    time.Unix(ts, 0).UTC(),
+			Price: *closes[i],
+		})
+	}
+	return points, nil
+}
+
+func fetchYahoo(ctx context.Context, url, ticker string) (float64, error) {
+	chart, err := fetchYahooChart(ctx, url, ticker)
 	if err != nil {
 		return 0, err
 	}
-	req.Header.Set("User-Agent", "Mozilla/5.0")
-
-	resp, err := http.DefaultClient.Do(req)
-	if err != nil {
-		return 0, err
-	}
-	defer resp.Body.Close()
-
-	var chart yahooChart
-	if err := json.NewDecoder(resp.Body).Decode(&chart); err != nil {
-		return 0, fmt.Errorf("decode yahoo response: %w", err)
-	}
-	if chart.Chart.Error != nil {
-		return 0, fmt.Errorf("yahoo error: %s", chart.Chart.Error.Description)
-	}
 	if len(chart.Chart.Result) == 0 {
 		return 0, fmt.Errorf("no result for ticker %s", ticker)
 	}
-
 	price := chart.Chart.Result[0].Meta.RegularMarketPrice
 	if price == 0 {
 		return 0, fmt.Errorf("zero price for ticker %s", ticker)
 	}
 	return price, nil
 }
+
+func fetchYahooChart(ctx context.Context, url, ticker string) (*yahooChart, error) {
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Set("User-Agent", "Mozilla/5.0")
+
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	var chart yahooChart
+	if err := json.NewDecoder(resp.Body).Decode(&chart); err != nil {
+		return nil, fmt.Errorf("decode yahoo response: %w", err)
+	}
+	if chart.Chart.Error != nil {
+		return nil, fmt.Errorf("yahoo error: %s", chart.Chart.Error.Description)
+	}
+	return &chart, nil
+}
+
+// PricePoint est un prix à un instant donné, partagé entre les providers.
+type PricePoint struct {
+	At    time.Time
+	Price float64
+}

internal/server/server.go

@@ -8,6 +8,7 @@ import (
 	"git.g3e.fr/H6N/account/internal/auth"
 	"git.g3e.fr/H6N/account/internal/config"
 	"git.g3e.fr/H6N/account/internal/handler"
+	"git.g3e.fr/H6N/account/internal/pipeline"
 	"git.g3e.fr/H6N/account/internal/snapshot"
 	"git.g3e.fr/H6N/account/internal/store"
 	"github.com/jackc/pgx/v5/pgxpool"
@@ -43,10 +44,16 @@ func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 func (s *Server) routes() {
 	st := store.New(s.pool)
 	horizonDays := 30
+	var pipelineCfg pipeline.Config
 	if s.cfg != nil {
 		horizonDays = s.cfg.SnapshotHorizonDays
+		pipelineCfg = pipeline.Config{
+			OpenFIGIKey:  s.cfg.OpenFIGIKey,
+			CoinGeckoKey: s.cfg.CoinGeckoKey,
+		}
 	}
-	eng := snapshot.New(st, s.logger, horizonDays)
+	pl := pipeline.New(st, pipelineCfg, s.logger)
+	eng := snapshot.New(st, s.logger, horizonDays).WithBackfiller(pl)
 
 	handler.NewInstrumentHandler(st).RegisterRoutes(s.mux)
 	handler.NewAccountHandler(st).RegisterRoutes(s.mux)

internal/snapshot/engine.go

@@ -9,16 +9,28 @@ import (
 	"git.g3e.fr/H6N/account/internal/store"
 )
 
+// PriceBackfiller est implémenté par le pipeline pour récupérer l'historique de prix manquant.
+type PriceBackfiller interface {
+	BackfillInstrument(ctx context.Context, instrumentID int32, from, to time.Time) error
+}
+
 type Engine struct {
 	store       *store.Store
 	logger      *slog.Logger
 	horizonDays int
+	backfiller  PriceBackfiller
 }
 
 func New(st *store.Store, logger *slog.Logger, horizonDays int) *Engine {
 	return &Engine{store: st, logger: logger, horizonDays: horizonDays}
 }
 
+// WithBackfiller active le backfill automatique des prix historiques manquants.
+func (e *Engine) WithBackfiller(b PriceBackfiller) *Engine {
+	e.backfiller = b
+	return e
+}
+
 func (e *Engine) Store() *store.Store { return e.store }
 
 // RecomputeDay calcule les snapshots de tous les comptes pour une date donnée.
@@ -126,8 +138,11 @@ func (e *Engine) backfillAccount(ctx context.Context, accountID int32, from, to
 		return fmt.Errorf("from (%s) after to (%s)", from.Format("2006-01-02"), to.Format("2006-01-02"))
 	}
 
+	// backfilledInstruments évite de re-fetcher le même instrument plusieurs fois dans ce run.
+	backfilledInstruments := make(map[int32]bool)
+
 	for d := from; !d.After(to); d = d.AddDate(0, 0, 1) {
-		if err := e.recomputeAccount(ctx, accountID, d); err != nil {
+		if err := e.recomputeAccountWithBackfill(ctx, accountID, d, backfilledInstruments); err != nil {
 			return fmt.Errorf("recompute %s: %w", d.Format("2006-01-02"), err)
 		}
 	}
@@ -135,11 +150,20 @@ func (e *Engine) backfillAccount(ctx context.Context, accountID int32, from, to
 }
 
 func (e *Engine) recomputeAccount(ctx context.Context, accountID int32, date time.Time) error {
+	return e.recomputeAccountWithBackfill(ctx, accountID, date, nil)
+}
+
+func (e *Engine) recomputeAccountWithBackfill(ctx context.Context, accountID int32, date time.Time, backfilled map[int32]bool) error {
 	baseDate, hasBase, err := e.store.GetLatestSnapshotDate(ctx, accountID, date)
 	if err != nil {
 		return fmt.Errorf("get latest snapshot date: %w", err)
 	}
 
+	prus, err := e.store.ComputePRUs(ctx, accountID, date)
+	if err != nil {
+		return fmt.Errorf("compute PRUs: %w", err)
+	}
+
 	positions := map[int32]store.PositionRow{}
 	if hasBase {
 		base, err := e.store.GetBasePositions(ctx, accountID, baseDate)
@@ -175,30 +199,53 @@ func (e *Engine) recomputeAccount(ctx context.Context, accountID int32, date tim
 		if err != nil {
 			return fmt.Errorf("get price instrument %d: %w", pos.InstrumentID, err)
 		}
-		if !found {
-			if pos.InstrumentType == "devise" {
-				prix = 1.0
-			} else {
-				e.logger.Warn("snapshot: no price, position skipped",
-					"account_id", accountID,
-					"instrument_id", pos.InstrumentID,
-					"date", date.Format("2006-01-02"),
-				)
-				continue
-			}
+		if !found && pos.InstrumentType == "devise" {
+			prix = 1.0
+			found = true
 		}
 
-		valeur := pos.Quantite * prix
-		totalValeur += valeur
+		// Backfill automatique si prix manquant et backfiller disponible.
+		// from = date - 1 jour (marge timezone), to = maintenant (inclut aujourd'hui).
+		if !found && e.backfiller != nil && (backfilled == nil || !backfilled[pos.InstrumentID]) {
+			from := date.AddDate(0, 0, -1)
+			now := time.Now().UTC()
+			if err := e.backfiller.BackfillInstrument(ctx, pos.InstrumentID, from, now); err != nil {
+				e.logger.Warn("snapshot: backfill échoué",
+					"instrument_id", pos.InstrumentID, "error", err)
+			} else {
+				if backfilled != nil {
+					backfilled[pos.InstrumentID] = true
+				}
+				// Retry après backfill
+				prix, found, err = e.store.GetPriceAt(ctx, pos.InstrumentID, date)
+				if err != nil {
+					return fmt.Errorf("get price instrument %d (post-backfill): %w", pos.InstrumentID, err)
+				}
+			}
+		}
 
 		snap := store.PositionSnapshot{
 			Date:         date,
 			AccountID:    accountID,
 			InstrumentID: pos.InstrumentID,
 			Quantite:     pos.Quantite,
-			PrixCloture:  &prix,
-			Valeur:       &valeur,
 		}
+		if pru, ok := prus[pos.InstrumentID]; ok {
+			snap.PRU = &pru
+		}
+		if found {
+			valeur := pos.Quantite * prix
+			snap.PrixCloture = &prix
+			snap.Valeur = &valeur
+			totalValeur += valeur
+		} else {
+			e.logger.Warn("snapshot: no price, valeur non calculée",
+				"account_id", accountID,
+				"instrument_id", pos.InstrumentID,
+				"date", date.Format("2006-01-02"),
+			)
+		}
+
 		if err := e.store.UpsertPositionSnapshot(ctx, snap); err != nil {
 			return fmt.Errorf("upsert position snapshot: %w", err)
 		}

internal/store/snapshot.go

@@ -171,6 +171,37 @@ func nullableDate(t time.Time) any {
 	return t
 }
 
+// ComputePRUs retourne le PRU (coût moyen pondéré) par instrument pour un compte,
+// calculé sur toutes les transactions d'achat (account_dest_id) jusqu'à asOf inclus.
+// PRU = sum(quantite_source) / sum(quantite_dest)
+// Retourne uniquement les instruments qui ont des achats.
+func (s *Store) ComputePRUs(ctx context.Context, accountID int32, asOf time.Time) (map[int32]float64, error) {
+	rows, err := s.pool.Query(ctx, `
+		SELECT instrument_dest_id,
+		       SUM(quantite_source) / NULLIF(SUM(quantite_dest), 0) AS pru
+		FROM transaction
+		WHERE account_dest_id = $1
+		  AND date <= $2::date
+		  AND quantite_source IS NOT NULL
+		GROUP BY instrument_dest_id
+	`, accountID, asOf)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	result := make(map[int32]float64)
+	for rows.Next() {
+		var instrumentID int32
+		var pru float64
+		if err := rows.Scan(&instrumentID, &pru); err != nil {
+			return nil, err
+		}
+		result[instrumentID] = pru
+	}
+	return result, rows.Err()
+}
+
 // GetPriceAt retourne le dernier prix connu pour un instrument à une date donnée.
 // Retourne (0, false, nil) si aucun prix n'est trouvé.
 func (s *Store) GetPriceAt(ctx context.Context, instrumentID int32, date time.Time) (float64, bool, error) {
@@ -251,6 +282,30 @@ func (s *Store) GetInvalidations(ctx context.Context) ([]Invalidation, error) {
 	return out, rows.Err()
 }
 
+// GetInvalidationsForOwner retourne les invalidations des comptes appartenant à ownerID.
+func (s *Store) GetInvalidationsForOwner(ctx context.Context, ownerID int32) ([]Invalidation, error) {
+	rows, err := s.pool.Query(ctx, `
+		SELECT ai.account_id, ai.recompute_from
+		FROM account_snapshot_invalidation ai
+		JOIN account a ON a.id = ai.account_id
+		WHERE a.owner_id = $1
+		ORDER BY ai.account_id
+	`, ownerID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var out []Invalidation
+	for rows.Next() {
+		var inv Invalidation
+		if err := rows.Scan(&inv.AccountID, &inv.RecomputeFrom); err != nil {
+			return nil, err
+		}
+		out = append(out, inv)
+	}
+	return out, rows.Err()
+}
+
 // ClearInvalidation supprime le flag d'invalidation une fois le recalcul terminé.
 func (s *Store) ClearInvalidation(ctx context.Context, accountID int32) error {
 	_, err := s.pool.Exec(ctx,