import_applications_ioda: gestion conflits nom_court (UNIQUE existant)

Strategy SELECT puis INSERT/UPDATE plutot que ON CONFLICT:
- Cherche par ioda_libelle d'abord, sinon par nom_court (apps non-IODA)
- Si UPDATE existant -> enrichit avec champs IODA
- Si INSERT et nom_court deja pris -> suffixe avec -IODA-<POS>

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

tools/import_applications_ioda.py

@@ -77,7 +77,36 @@ def parse_services(xlsx_path):
     return services
 
 
-SQL_UPSERT = text("""
+SQL_FIND = text("""
+    SELECT id FROM applications
+    WHERE ioda_libelle = :libelle
+       OR (ioda_libelle IS NULL AND nom_court = :nom_court)
+    LIMIT 1
+""")
+
+SQL_UPDATE = text("""
+    UPDATE applications SET
+        nom_complet        = :nom_complet,
+        description        = COALESCE(:description, description),
+        editeur            = COALESCE(:editeur, editeur),
+        ioda_libelle       = :libelle,
+        ioda_lib_court     = :lib_court,
+        ioda_code_pos      = :code_pos,
+        ioda_type          = :type,
+        ioda_statut        = :statut,
+        ioda_alias         = :alias,
+        ioda_perimetre     = :perimetre,
+        ioda_dept_domaine  = :dept_domaine,
+        ioda_resp_metier   = :resp_metier,
+        ioda_resp_dsi      = :resp_dsi,
+        ioda_nb_components = :nb_components,
+        ioda_commentaire   = :commentaire,
+        ioda_imported_at   = now(),
+        updated_at         = now()
+    WHERE id = :id
+""")
+
+SQL_INSERT = text("""
     INSERT INTO applications (
         nom_court, nom_complet, description, editeur, criticite,
         ioda_libelle, ioda_lib_court, ioda_code_pos, ioda_type, ioda_statut,
@@ -91,24 +120,6 @@ SQL_UPSERT = text("""
         :resp_dsi, :nb_components, :commentaire, now(),
         now(), now()
     )
-    ON CONFLICT (ioda_libelle) WHERE ioda_libelle IS NOT NULL
-    DO UPDATE SET
-        nom_complet        = EXCLUDED.nom_complet,
-        description        = COALESCE(EXCLUDED.description, applications.description),
-        editeur            = COALESCE(EXCLUDED.editeur, applications.editeur),
-        ioda_lib_court     = EXCLUDED.ioda_lib_court,
-        ioda_code_pos      = EXCLUDED.ioda_code_pos,
-        ioda_type          = EXCLUDED.ioda_type,
-        ioda_statut        = EXCLUDED.ioda_statut,
-        ioda_alias         = EXCLUDED.ioda_alias,
-        ioda_perimetre     = EXCLUDED.ioda_perimetre,
-        ioda_dept_domaine  = EXCLUDED.ioda_dept_domaine,
-        ioda_resp_metier   = EXCLUDED.ioda_resp_metier,
-        ioda_resp_dsi      = EXCLUDED.ioda_resp_dsi,
-        ioda_nb_components = EXCLUDED.ioda_nb_components,
-        ioda_commentaire   = EXCLUDED.ioda_commentaire,
-        ioda_imported_at   = now(),
-        updated_at         = now()
 """)
 
 
@@ -125,21 +136,39 @@ def main():
     engine = create_engine(DATABASE_URL)
     print(f"[INFO] DB: {DATABASE_URL.rsplit('@', 1)[-1]}")
 
-    inserted = updated = 0
+    inserted = updated = skipped = 0
     with engine.begin() as conn:
+        used_nom_court = set()
         for svc in services:
-            # nom_court max 50 chars: prefere lib_court, sinon truncate libelle
-            nom_court = (svc["lib_court"] or svc["libelle"])[:50]
+            base_nc = (svc["lib_court"] or svc["libelle"])[:50]
             params = {
                 **svc,
-                "nom_court": nom_court,
+                "nom_court": base_nc,
                 "nom_complet": svc["libelle"][:200],
             }
-            r = conn.execute(SQL_UPSERT, params)
-            # Discriminer insert vs update via xmin trick? Plus simple: compter rowcount
-            inserted += 1  # upsert ne distingue pas, on log la totale
+            existing = conn.execute(SQL_FIND, params).fetchone()
+            if existing:
+                conn.execute(SQL_UPDATE, {**params, "id": existing[0]})
+                updated += 1
+            else:
+                # Eviter collision nom_court avec autre app non-IODA en BDD
+                # ou avec un autre service IODA deja traite cette session
+                nc = base_nc
+                if nc in used_nom_court:
+                    # ajout suffixe POS pour unicite
+                    suf = svc.get("code_pos") or "X"
+                    nc = (base_nc[:46] + "-" + suf)[:50]
+                used_nom_court.add(nc)
+                # Verif collision DB
+                row = conn.execute(text("SELECT 1 FROM applications WHERE nom_court=:nc"),
+                                   {"nc": nc}).fetchone()
+                if row:
+                    nc = (base_nc[:42] + "-IODA-" + (svc.get("code_pos") or "X"))[:50]
+                params["nom_court"] = nc
+                conn.execute(SQL_INSERT, params)
+                inserted += 1
 
-    print(f"[OK] Upsert termine — {inserted} services traites")
+    print(f"[OK] Termine — INSERT: {inserted} | UPDATE: {updated} | SKIP: {skipped}")
     print(f"[INFO] Verif: SELECT COUNT(*) FROM applications WHERE ioda_libelle IS NOT NULL;")