From 47c5ad34fab1ec9888818a13035d363f4b37a9fe Mon Sep 17 00:00:00 2001
From: Olivier <olivier@croguennec.net>
Date: Sun, 12 Jul 2026 19:29:52 +0200
Subject: [PATCH] Fixe bug

---
 backend/src/utils/schedule.js | 57 ++++++++++++++++++++++++++++++-----
 1 file changed, 49 insertions(+), 8 deletions(-)

diff --git a/backend/src/utils/schedule.js b/backend/src/utils/schedule.js
index 60bf5a2..5909e39 100644
--- a/backend/src/utils/schedule.js
+++ b/backend/src/utils/schedule.js
@@ -460,14 +460,55 @@ export function generateSimulWithReinvestissements(db, investissementId) {
   }
 
   db.transaction(() => {
-    db.prepare('DELETE FROM simul_remboursements WHERE investissement_id=?').run(investissementId);
-    const stmt = db.prepare(`
-      INSERT INTO simul_remboursements
-        (investissement_id, numero_echeance, date_prevue, capital_prevu, interets_prevus, total_prevu)
-      VALUES (?,?,?,?,?,?)
-    `);
-    for (const e of schedule) {
-      stmt.run(investissementId, e.n, e.date, e.capital, e.interets, e.total);
+    if (inv.date_debut_simul) {
+      // ── Mode restructuration ──────────────────────────────────────────────
+      // Même logique que generateSimul() : conserver les échéances déjà payées avant
+      // la date de restructuration, supprimer le reste, et renuméroter à partir du
+      // nombre de mois réellement écoulés (pas de repartir à 1, qui ferait disparaître
+      // les échéances passées — déjà payées — de la table des projections).
+      const keptEntries = db.prepare(`
+        SELECT sr.id, sr.numero_echeance FROM simul_remboursements sr
+        WHERE sr.investissement_id = ?
+          AND sr.date_prevue < ?
+          AND EXISTS (
+            SELECT 1 FROM remboursements r
+            WHERE r.investissement_id = sr.investissement_id
+              AND substr(r.date_remb, 1, 7) = substr(sr.date_prevue, 1, 7)
+          )
+        ORDER BY sr.numero_echeance
+      `).all(investissementId, inv.date_debut_simul);
+
+      if (keptEntries.length > 0) {
+        db.prepare(
+          `DELETE FROM simul_remboursements WHERE investissement_id = ? AND id NOT IN (${keptEntries.map(() => '?').join(',')})`
+        ).run(investissementId, ...keptEntries.map(e => e.id));
+      } else {
+        db.prepare('DELETE FROM simul_remboursements WHERE investissement_id=?').run(investissementId);
+      }
+
+      const elapsedMonths = (inv.date_premiere_echeance && inv.date_debut_simul > inv.date_premiere_echeance)
+        ? monthsDiff(inv.date_premiere_echeance, inv.date_debut_simul)
+        : keptEntries.length;
+
+      const stmt = db.prepare(`
+        INSERT INTO simul_remboursements
+          (investissement_id, numero_echeance, date_prevue, capital_prevu, interets_prevus, total_prevu)
+        VALUES (?,?,?,?,?,?)
+      `);
+      for (const e of schedule) {
+        stmt.run(investissementId, elapsedMonths + e.n, e.date, e.capital, e.interets, e.total);
+      }
+    } else {
+      // ── Mode standard : régénération complète ────────────────────────────
+      db.prepare('DELETE FROM simul_remboursements WHERE investissement_id=?').run(investissementId);
+      const stmt = db.prepare(`
+        INSERT INTO simul_remboursements
+          (investissement_id, numero_echeance, date_prevue, capital_prevu, interets_prevus, total_prevu)
+        VALUES (?,?,?,?,?,?)
+      `);
+      for (const e of schedule) {
+        stmt.run(investissementId, e.n, e.date, e.capital, e.interets, e.total);
+      }
     }
   })();
 }