From e19db93d2cb24d66eceaa32e839b0ddd040bb5fc Mon Sep 17 00:00:00 2001
From: swrup <swrup@protonmail.com>
Date: Thu, 4 Dec 2025 17:54:40 +0100
Subject: [PATCH] + AggregateTransferFee

---
 src/api.ml           | 28 ++++++++++++++++++++++++++++
 src/bin_signature.ml | 41 ++++++++++++++++++++++++++++++-----------
 2 files changed, 58 insertions(+), 11 deletions(-)

diff --git a/src/api.ml b/src/api.ml
index c537f7b0..ade65cc6 100644
--- a/src/api.ml
+++ b/src/api.ml
@@ -812,3 +812,31 @@ module ExchangePartnerListEntry = struct
     |> mem "master_sig" WadPartnerSignaturePS.jsont ~enc:master_sig
     |> finish
 end
+
+module AggregateTransferFee = struct
+  type t = {
+    wire_fee: Amount.t;
+    closing_fee: Amount.t;
+    start_date: Timestamp.t;
+    end_date: Timestamp.t;
+    sig_: MasterWireFeePS.t;
+  }
+
+  let jsont =
+    let make wire_fee closing_fee start_date end_date sig_ =
+      { wire_fee; closing_fee; start_date; end_date; sig_ }
+    in
+    let wire_fee v = v.wire_fee in
+    let closing_fee v = v.closing_fee in
+    let start_date v = v.start_date in
+    let end_date v = v.end_date in
+    let sig_ v = v.sig_ in
+    let open Jsont.Object in
+    map ~kind:"AggregateTransferFee" make
+    |> mem "wire_fee" Amount.jsont ~enc:wire_fee
+    |> mem "closing_fee" Amount.jsont ~enc:closing_fee
+    |> mem "start_date" Timestamp.jsont ~enc:start_date
+    |> mem "end_date" Timestamp.jsont ~enc:end_date
+    |> mem "sig" MasterWireFeePS.jsont ~enc:sig_
+    |> finish
+end
diff --git a/src/bin_signature.ml b/src/bin_signature.ml
index da56858c..ed0cfc71 100644
--- a/src/bin_signature.ml
+++ b/src/bin_signature.ml
@@ -605,6 +605,36 @@ module WadPartnerSignaturePS = struct
   include MK (R)
 end
 
+module MasterWireFeePS = struct
+  module R = struct
+    (* purpose.purpose = TALER_SIGNATURE_MASTER_WIRE_FEES *)
+    type r = {
+      h_wire_method: Hash_64_cstr.t;
+      start_date: TimeAbsoluteNBO.t;
+      end_date: TimeAbsoluteNBO.t;
+      wire_fee: AmountNBO.t;
+      closing_fee: AmountNBO.t;
+    }
+
+    let bin =
+      let open Bin in
+      Purpose.make_bin Taler_signatures.master_wire_fees @@ fun _purpose ->
+      record
+        (fun _purpose h_wire_method start_date end_date wire_fee closing_fee ->
+          { h_wire_method; start_date; end_date; wire_fee; closing_fee })
+      |+ Purpose.field _purpose
+      |+ field Hash_64_cstr.bin (fun t -> t.h_wire_method)
+      |+ field TimeAbsoluteNBO.bin (fun t -> t.start_date)
+      |+ field TimeAbsoluteNBO.bin (fun t -> t.end_date)
+      |+ field AmountNBO.bin (fun t -> t.wire_fee)
+      |+ field AmountNBO.bin (fun t -> t.closing_fee)
+      |> sealr
+  end
+
+  include R
+  include MK (R)
+end
+
 (* ### BIN IMPL END ### *)
 
 module WithdrawRequestPS = struct
@@ -723,17 +753,6 @@ module ExchangeKeySetPS = struct
   }
 end
 
-module MasterWireFeePS = struct
-  (* purpose.purpose = TALER_SIGNATURE_MASTER_WIRE_FEES *)
-  type t = {
-    h_wire_method: Hash_64_cstr.t;
-    start_date: TimeAbsoluteNBO.t;
-    end_date: TimeAbsoluteNBO.t;
-    wire_fee: AmountNBO.t;
-    closing_fee: AmountNBO.t;
-  }
-end
-
 module DepositTrackPS = struct
   (* purpose.purpose = TALER_SIGNATURE_MERCHANT_TRACK_TRANSACTION *)
   type t = {