added client RA bill wise download report

app/routes/file_import.py

@@ -0,0 +1,45 @@
+from flask import Blueprint, render_template, request, flash
+from app.services.file_service import FileService
+from app.models.subcontractor_model import Subcontractor
+from app.utils.helpers import login_required
+
+file_import_bp = Blueprint("file_import", __name__, url_prefix="/file")
+
+@file_import_bp.route("/import", methods=["GET", "POST"])
+@login_required
+def import_file():
+    subcontractors = Subcontractor.query.all()
+
+    if request.method == "POST":
+        file = request.files.get("file")
+        subcontractor_id = request.form.get("subcontractor_id")
+        RA_Bill_No = request.form.get("RA_Bill_No")
+
+        service = FileService()
+        success, msg = service.handle_file_upload(file, subcontractor_id, RA_Bill_No)
+
+        flash(msg, "success" if success else "danger")
+
+    return render_template(
+        "file_import.html",
+        title="Sub-cont. File Import",
+        subcontractors=subcontractors
+    )
+
+
+# this route import client files
+@file_import_bp.route("/import_client", methods=["GET", "POST"])
+@login_required
+def client_import_file():
+    subcontractors = Subcontractor.query.all()
+
+    if request.method == "POST":
+        file = request.files.get("file")
+        RA_Bill_No = request.form.get("RA_Bill_No")
+
+        service = FileService()
+        success, msg = service.handle_client_file_upload(file, RA_Bill_No)
+
+        flash(msg, "success" if success else "danger")
+
+    return render_template("file_import_client.html", title="Client File Import", subcontractors=subcontractors)