Initial commit

2026-06-13 14:57:15 +02:00
commit 48ed7fe65e
209 changed files with 49979 additions and 0 deletions
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+import { Router } from 'express';
+import { z } from 'zod';
+import db from '../db/index.js';
+import { HttpError } from '../middleware/errorHandler.js';
+import { requireInvestisseur } from '../middleware/investisseurScope.js';
+import { buildSchedule, adjustSimulForActuals } from '../utils/schedule.js';
+
+const router = Router();
+
+const Schema = z.object({
+  investissement_id: z.number().int().positive(),
+  numero_echeance: z.number().int().positive(),
+  date_prevue: z.string().regex(/^\d{4}-\d{2}-\d{2}$/),
+  capital_prevu: z.number().nonnegative().default(0),
+  interets_prevus: z.number().nonnegative().default(0),
+  total_prevu: z.number().nonnegative().default(0),
+  notes: z.string().optional(),
+});
+
+/* GET /api/simul/all — toutes les projections pour l'investisseur actif (ou scope=all) */
+router.get('/all', (req, res) => {
+  const userId   = req.user.id;
+  const scopeAll = req.query.scope === 'all';
+  const rawInvId = req.header('X-Investisseur-Id');
+  const invId    = Number(rawInvId);
+
+  let rows;
+  if (scopeAll) {
+    rows = db.prepare(`
+      SELECT s.*, i.plateforme_id, i.investisseur_id
+      FROM simul_remboursements s
+      JOIN investissements i ON i.id = s.investissement_id
+      JOIN investisseurs inv ON inv.id = i.investisseur_id
+      WHERE inv.user_id = ?
+      ORDER BY s.date_prevue
+    `).all(userId);
+  } else {
+    if (!invId) return res.status(400).json({ error: 'Missing X-Investisseur-Id' });
+    const ok = db.prepare('SELECT id FROM investisseurs WHERE id=? AND user_id=?').get(invId, userId);
+    if (!ok) return res.status(403).json({ error: 'Investisseur not owned by user' });
+    rows = db.prepare(`
+      SELECT s.*, i.plateforme_id, i.investisseur_id
+      FROM simul_remboursements s
+      JOIN investissements i ON i.id = s.investissement_id
+      WHERE i.investisseur_id = ?
+      ORDER BY s.date_prevue
+    `).all(invId);
+  }
+  res.json(rows);
+});
+
+router.use(requireInvestisseur);
+
+function assertOwnedInvestissement(invId, userId) {
+  const row = db.prepare(`
+    SELECT i.id, i.montant_investi, i.taux_interet, i.duree_mois, i.type_remb,
+           i.freq_interets, i.date_premiere_echeance, i.date_souscription
+    FROM investissements i
+    JOIN investisseurs inv ON inv.id = i.investisseur_id
+    WHERE i.id = ? AND inv.user_id = ?
+  `).get(invId, userId);
+  if (!row) throw new HttpError(403, 'Investissement not in scope');
+  return row;
+}
+
+router.get('/', (req, res) => {
+  const { investissement_id } = req.query;
+  if (!investissement_id) {
+    return res.status(400).json({ error: 'investissement_id query param required' });
+  }
+  assertOwnedInvestissement(Number(investissement_id), req.user.id);
+  const rows = db.prepare(
+    'SELECT * FROM simul_remboursements WHERE investissement_id=? ORDER BY numero_echeance'
+  ).all(investissement_id);
+  res.json(rows);
+});
+
+router.post('/', (req, res, next) => {
+  try {
+    const body = Schema.parse(req.body);
+    assertOwnedInvestissement(body.investissement_id, req.user.id);
+    const r = db.prepare(`
+      INSERT INTO simul_remboursements
+        (investissement_id, numero_echeance, date_prevue, capital_prevu, interets_prevus, total_prevu, notes)
+      VALUES (?,?,?,?,?,?,?)
+    `).run(
+      body.investissement_id, body.numero_echeance, body.date_prevue,
+      body.capital_prevu, body.interets_prevus, body.total_prevu, body.notes || null,
+    );
+    res.status(201).json({ id: r.lastInsertRowid, ...body });
+  } catch (e) { next(e); }
+});
+
+/**
+ * Auto-generate the simulated repayment schedule for an investissement
+ * based on its montant, taux, durée, type_remb and freq_interets.
+ *
+ * Body: { investissement_id, replace?: boolean }
+ */
+router.post('/generate', (req, res, next) => {
+  try {
+    const { investissement_id, replace = true } = req.body;
+    if (!investissement_id) throw new HttpError(400, 'investissement_id required');
+    const inv = assertOwnedInvestissement(Number(investissement_id), req.user.id);
+    if (!inv.taux_interet || !inv.duree_mois) {
+      throw new HttpError(400, 'Investissement requires taux_interet and duree_mois');
+    }
+
+    const tx = db.transaction(() => {
+      if (replace) {
+        db.prepare('DELETE FROM simul_remboursements WHERE investissement_id=?').run(investissement_id);
+      }
+      const start = inv.date_premiere_echeance || inv.date_souscription;
+      const echeances = buildSchedule({
+        montant: inv.montant_investi,
+        taux: inv.taux_interet,
+        duree: inv.duree_mois,
+        type: inv.type_remb || 'in_fine',
+        freq: inv.freq_interets || 'mensuel',
+        startDate: start,
+      });
+      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 echeances) {
+        stmt.run(investissement_id, e.n, e.date, e.capital, e.interets, e.total);
+      }
+      return echeances.length;
+    });
+
+    const inserted = tx();
+    res.status(201).json({ inserted });
+  } catch (e) { next(e); }
+});
+
+/**
+ * Recalcule l'échéancier en tenant compte des remboursements réels enregistrés
+ * (remboursements anticipés + première période partielle).
+ * Équivalent à ce qui est déclenché automatiquement après chaque saisie de remboursement.
+ *
+ * Body: { investissement_id }
+ */
+router.post('/recalculate', (req, res, next) => {
+  try {
+    const { investissement_id } = req.body;
+    if (!investissement_id) throw new HttpError(400, 'investissement_id required');
+    assertOwnedInvestissement(Number(investissement_id), req.user.id);
+    adjustSimulForActuals(db, Number(investissement_id));
+    const rows = db.prepare(
+      'SELECT * FROM simul_remboursements WHERE investissement_id=? ORDER BY numero_echeance'
+    ).all(investissement_id);
+    res.json({ recalculated: rows.length, rows });
+  } catch (e) { next(e); }
+});
+
+router.delete('/:id', (req, res, next) => {
+  try {
+    const owns = db.prepare(`
+      SELECT s.id FROM simul_remboursements s
+      JOIN investissements i ON i.id = s.investissement_id
+      WHERE s.id=? AND i.investisseur_id=?
+    `).get(req.params.id, req.investisseur.id);
+    if (!owns) throw new HttpError(404, 'Not found');
+    db.prepare('DELETE FROM simul_remboursements WHERE id=?').run(req.params.id);
+    res.status(204).end();
+  } catch (e) { next(e); }
+});
+
+export default router;