feat: formats tableur additionnels - xlsm editable, xls/ods lecture seule, csv editable #153

A16 — la visionneuse tableur accepte quatre formats de plus : .xlsm est
servi et sauvegarde comme un .xlsx avec keep_vba=True (les macros
survivent, la porte lossy est levée pour ce format) ; .xls (xlrd) et .ods
(odfpy) sont rendus en lecture seule (xlsx_readonly, wiring d'édition
désactivé) ; .csv devient éditable via render_csv_table (grille A1
identique au viewer) et PUT /api/file/{vault}/csv/save (réécriture csv
RFC 4180, extension de grille, valeurs stockées telles quelles). 12 tests
backend + contre-preuve (4 échecs sur neutralisation du service CSV),
JSDOM 33/33, ruff/mypy 0.

🤖 Generated with Codebuff
Co-Authored-By: Codebuff <[email protected]>

backend/routers/files_read.py

@@ -446,27 +446,67 @@ async def api_file(vault_name: str, path: str = Query(..., description="Relative
         logger.error(f"Unexpected error reading file {path}: {e}")
         raise HTTPException(status_code=500, detail=f"Error reading file: {e!s}")
 
-    # === CSV: render as HTML table ===
+    # === Excel .xlsm: same editable viewer as .xlsx, macros preserved on save ===
+    if ext == ".xlsm":
+        try:
+            from backend.xlsx_reader import inspect_workbook, render_sheets
+
+            sheets = render_sheets(file_path)
+            size = file_path.stat().st_size
+            return {
+                "vault": vault_name,
+                "path": path,
+                "title": file_path.name,
+                "tags": [],
+                "frontmatter": {},
+                "html": sheets[0]["html"] if sheets else "",
+                "raw_length": size,
+                "extension": ext,
+                "is_markdown": False,
+                "is_xlsx": True,
+                "xlsx_sheets": sheets,
+                # Macros are NOT lossy for .xlsm: keep_vba re-serializes them
+                # (an empty LOSSY probe is what makes the save gate pass).
+                "xlsx_lossy_features": [],
+                "unsupported": False,
+                "size_bytes": size,
+            }
+        except Exception as e:
+            logger.error(f"XLSX read error for {path}: {e}")
+            raise HTTPException(status_code=500, detail=f"Error reading XLSX: {e!s}")
+
+    # === Legacy/ODF spreadsheets (.xls, .ods): read-only table view ===
+    if ext in (".xls", ".ods"):
+        try:
+            from backend.xlsx_reader import render_legacy_workbook
+
+            sheets = render_legacy_workbook(file_path, ext)
+            size = file_path.stat().st_size
+            return {
+                "vault": vault_name,
+                "path": path,
+                "title": file_path.name,
+                "tags": [],
+                "frontmatter": {},
+                "html": sheets[0]["html"] if sheets else "",
+                "raw_length": size,
+                "extension": ext,
+                "is_markdown": False,
+                "is_xlsx": True,
+                "xlsx_readonly": True,
+                "xlsx_sheets": sheets,
+                "unsupported": False,
+                "size_bytes": size,
+            }
+        except Exception as e:
+            logger.error(f"Spreadsheet read error for {path}: {e}")
+            raise HTTPException(status_code=500, detail=f"Error reading spreadsheet: {e!s}")
+
+    # === CSV: spreadsheet-style table (same shape as the xlsx viewer) ===
     if ext == ".csv":
-        import csv
-        import io as csv_io
-        reader = csv.reader(csv_io.StringIO(raw))
-        rows = list(reader)
-        if not rows:
-            html = "<p><em>Fichier CSV vide</em></p>"
-        else:
-            headers = rows[0]
-            data_rows = rows[1:]
-            html = '<div class="csv-table-wrapper"><table class="csv-table"><thead><tr>'
-            for h in headers:
-                html += f"<th>{h}</th>"
-            html += "</tr></thead><tbody>"
-            for row in data_rows:
-                html += "<tr>"
-                for cell in row:
-                    html += f"<td>{cell}</td>"
-                html += "</tr>"
-            html += "</tbody></table></div>"
+        from backend.xlsx_reader import render_csv_table
+
+        html = render_csv_table(raw)
         return {
             "vault": vault_name, "path": path,
             "title": file_path.name, "tags": [], "frontmatter": {},

backend/routers/files_write.py

@@ -73,6 +73,9 @@ from backend.services.mutations import (
 from backend.services.mutations import (
     rename_file as service_rename_file,
 )
+from backend.services.mutations import (
+    save_csv_cells as service_save_csv_cells,
+)
 from backend.share import update_shares_after_rename
 from backend.sse import sse_manager
 from backend.webhooks import dispatch_webhooks
@@ -177,6 +180,41 @@ def api_file_xlsx_save(
     return {"status": "ok", "vault": result["vault"], "path": result["path"], "size": result["size"]}
 
 
+@router.put("/api/file/{vault_name}/csv/save", response_model=FileSaveResponse)
+def api_file_csv_save(
+    vault_name: str,
+    path: str = Query(..., description="Relative path to the .csv file"),
+    body: dict = Body(
+        ...,
+        description='{"cells": {"A1": value}} — A1-addressed text edits (#153 A16)',
+    ),
+    current_user=Depends(require_auth),
+):
+    """Apply A1-addressed cell edits to a ``.csv`` file (#153 A16).
+
+    The grid is re-parsed with :mod:`csv`, patched and re-serialized
+    (RFC 4180 quoting). References beyond the extent grow the grid. Values
+    are stored verbatim as text — a CSV has no formula engine.
+    """
+    if not check_vault_access(vault_name, current_user):
+        raise HTTPException(status_code=403, detail=f"Accès refusé à la vault '{vault_name}'")
+
+    cells = body.get("cells")
+    if not isinstance(cells, dict) or not cells or len(cells) > 500:
+        raise HTTPException(status_code=400, detail="Cellules invalides (1 à 500 par requête)")
+    for ref, value in cells.items():
+        if not isinstance(ref, str) or not isinstance(value, (str, int, float, bool, type(None))):
+            raise HTTPException(status_code=400, detail=f"Cellule invalide: {ref!r}")
+
+    result = service_save_csv_cells(vault_name, path, cells)
+    log_file_save(
+        current_user["username"], vault_name, path,
+        sum(len(str(v)) for v in cells.values()),
+        current_user.get("_request_ip", "unknown"),
+    )
+    return {"status": "ok", "vault": result["vault"], "path": result["path"], "size": result["size"]}
+
+
 @router.put("/api/file/{vault_name}/xlsx/structure", response_model=FileSaveResponse)
 def api_file_xlsx_structure(
     vault_name: str,