Groupe Gestionnaire + import CSV des operations
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"""
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Import d'un relevé d'opérations au format CSV.
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Colonnes : date ; libelle ; categorie ; activite ; taux_tva ; regime ; montant
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- montant négatif = dépense, positif = vente (ou neutre si catégorie neutre).
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Aperçu avant enregistrement.
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"""
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import csv
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import io
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from decimal import Decimal, InvalidOperation
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from datetime import datetime
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from django.contrib.auth.decorators import login_required
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from django.shortcuts import render
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from .models import (Entreprise, Client, Facture, LigneFacture, Paiement,
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Depense, Categorie, Activite, RegimeTva)
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COLONNES = ["date", "libelle", "categorie", "activite", "taux_tva", "regime", "montant"]
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CENT = Decimal("0.01")
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def _dec(v, d="0"):
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try:
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return Decimal(str(v or d).replace(",", ".").replace(" ", "").strip() or d)
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except (InvalidOperation, AttributeError):
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return Decimal(d)
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def _date(s):
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s = (s or "").strip()
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for fmt in ("%Y-%m-%d", "%d/%m/%Y", "%d-%m-%Y"):
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try:
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return datetime.strptime(s, fmt).date()
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except ValueError:
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continue
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return None
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def _activite(s):
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s = (s or "").strip().lower()
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table = {"vente": "vente", "service_bic": "service_bic", "service_bnc": "service_bnc",
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"bic": "service_bic", "bnc": "service_bnc"}
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return table.get(s, "")
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def _regime(s):
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s = (s or "").strip().lower()
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if s in ("intracom", "intracommunautaire", "ue"):
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return RegimeTva.INTRACOM
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if s in ("import", "hors ue"):
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return RegimeTva.IMPORT
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return RegimeTva.NATIONALE
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def _parse(text, cats):
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"""Retourne (lignes, erreurs). Chaque ligne = dict prêt à créer + aperçu."""
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text = text.lstrip("")
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delim = ";" if text.count(";") >= text.count(",") else ","
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reader = csv.reader(io.StringIO(text), delimiter=delim)
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rows = list(reader)
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if not rows:
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return [], ["Fichier vide."]
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# En-tête optionnel
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start = 1 if rows and rows[0] and rows[0][0].strip().lower() in ("date", "date ") else 0
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lignes, erreurs = [], []
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for n, raw in enumerate(rows[start:], start=start + 1):
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if not any(c.strip() for c in raw):
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continue
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c = (raw + [""] * 7)[:7]
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dt = _date(c[0])
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montant = _dec(c[6])
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if dt is None:
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erreurs.append(f"Ligne {n} : date invalide « {c[0]} ».")
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continue
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if montant == 0:
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erreurs.append(f"Ligne {n} : montant nul.")
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continue
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cat = cats.get((c[2] or "").strip().lower())
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taux = _dec(c[4])
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regime = _regime(c[5])
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neutre = bool(cat and cat.exclure_calculs)
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if montant > 0:
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typ = "Mouvement neutre" if neutre else "Vente"
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else:
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typ = "Dépense neutre" if neutre else "Dépense"
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lignes.append({
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"n": n, "date": dt, "libelle": (c[1] or "").strip() or "(sans libellé)",
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"categorie": cat, "categorie_nom": (c[2] or "").strip(),
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"activite": _activite(c[3]), "taux": taux, "regime": regime,
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"montant": montant, "neutre": neutre, "type": typ,
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})
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return lignes, erreurs
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def _creer(entreprise, l):
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montant = l["montant"]
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if montant > 0:
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if l["neutre"]:
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Paiement.objects.create(entreprise=entreprise, date=l["date"],
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libelle=l["libelle"], montant_total=montant,
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sens="credit", categorie=l["categorie"])
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return "vente_neutre"
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client, _ = Client.objects.get_or_create(entreprise=entreprise, nom=l["libelle"])
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ttc = montant
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ht = (ttc / (Decimal("1") + l["taux"] / Decimal("100"))).quantize(CENT)
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annee = l["date"].year
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base = Facture.objects.filter(entreprise=entreprise,
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numero__startswith=f"{annee}-").count() + 1
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numero = f"{annee}-{base:03d}"
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while Facture.objects.filter(entreprise=entreprise, numero=numero).exists():
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base += 1
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numero = f"{annee}-{base:03d}"
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f = Facture.objects.create(
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entreprise=entreprise, client=client, numero=numero,
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activite=l["activite"] or entreprise.activite, date_emission=l["date"],
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date_encaissement=l["date"], statut="encaissee")
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LigneFacture.objects.create(facture=f, designation=l["libelle"],
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quantite=Decimal("1"), prix_unitaire_ht=ht,
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taux_tva=l["taux"])
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f.recompute_totaux()
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return "vente"
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# Dépense
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abs_m = -montant
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if l["regime"] in (RegimeTva.INTRACOM, RegimeTva.IMPORT):
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ttc, tva = abs_m, Decimal("0")
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elif l["neutre"]:
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ttc, tva = abs_m, Decimal("0")
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else:
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ttc = abs_m
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tva = (abs_m * l["taux"] / (Decimal("100") + l["taux"])).quantize(CENT) if l["taux"] else Decimal("0")
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Depense.objects.create(
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entreprise=entreprise, date=l["date"], libelle=l["libelle"],
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categorie=l["categorie"], activite=l["activite"], regime_tva=l["regime"],
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taux_tva=l["taux"] if l["regime"] != RegimeTva.NATIONALE else Decimal("0"),
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montant_ttc=ttc, montant_tva=tva)
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return "depense"
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@login_required
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def import_csv(request):
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entreprises = Entreprise.accessibles(request.user)
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cats = {c.nom.strip().lower(): c for c in Categorie.objects.all()}
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ctx = {"entreprises": entreprises, "colonnes": COLONNES}
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if request.method == "POST":
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entreprise = entreprises.filter(pk=request.POST.get("entreprise")).first()
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texte = request.POST.get("texte", "")
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fichier = request.FILES.get("fichier")
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if fichier:
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texte = fichier.read().decode("utf-8-sig", "ignore")
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lignes, erreurs = _parse(texte, cats)
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ctx.update({"lignes": lignes, "erreurs": erreurs, "texte": texte,
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"entreprise_id": int(request.POST.get("entreprise") or 0)})
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if request.POST.get("action") == "import":
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if not entreprise:
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erreurs.append("Sélectionne une entreprise.")
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if not lignes:
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erreurs.append("Aucune ligne valide à importer.")
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if not erreurs:
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compteur = {}
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for l in lignes:
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k = _creer(entreprise, l)
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compteur[k] = compteur.get(k, 0) + 1
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ctx["resultat"] = compteur
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ctx["lignes"] = None # import fait
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ctx["erreurs"] = erreurs
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return render(request, "compta/import_csv.html", ctx)
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