From 46169ec3eb38e177cafd7faf6338d36c6a9e3971 Mon Sep 17 00:00:00 2001
From: Rutger Broekhoff
Date: Thu, 27 Nov 2025 23:35:08 +0100
Subject: Whatever all of this is

---
 lib/convert.ml | 90 ++++++++++++++++++++--------------------------------------
 1 file changed, 31 insertions(+), 59 deletions(-)

(limited to 'lib/convert.ml')

diff --git a/lib/convert.ml b/lib/convert.ml
index 5afc95e..5411fcc 100644
--- a/lib/convert.ml
+++ b/lib/convert.ml
@@ -12,6 +12,18 @@ type convert_err = Nonpositive_amount | Other of Tx.error
 let cents n = Amount (Money.of_z n)
 
 let tx_from_current_acc euc_id (Ingcsv.Tx (base, spec)) =
+  let make_tx_entries ~on_checking =
+    Account_id_map.of_alist_exn
+      [
+        ( virt_checking_acc,
+          ( on_checking,
+            cents base.amount,
+            Some (Money.of_z base.resulting_balance) ) );
+        ( virt_counterparty,
+          (Debit_credit.opposite on_checking, cents base.amount, None) );
+      ]
+  and base_labels = Labels.singleton (Iban_label Account_tag) base.account in
+
   if Z.(lt base.amount ~$0) then Error Nonpositive_amount
   else
     Result.map_error ~f:(fun e -> Other e)
@@ -19,14 +31,10 @@ let tx_from_current_acc euc_id (Ingcsv.Tx (base, spec)) =
     match spec with
     | Payment_terminal_payment details ->
         Tx.make ~cleared:(Some base.date) ~commodity_id:euc_id
-          ~credit:
-            (Account_id_map.singleton virt_checking_acc @@ cents base.amount)
-          ~debit:
-            (Account_id_map.singleton virt_counterparty @@ cents base.amount)
+          ~entries:(make_tx_entries ~on_checking:Debit_credit.Credit)
           ~labels:
             Labels.(
-              empty
-              |> add (Iban_label Account_tag) base.account
+              base_labels
               |> add (String_label Counterparty_name_tag)
                    details.counterparty_name
               |> add (String_label Card_seq_no_tag) details.card_sequence_no
@@ -38,14 +46,10 @@ let tx_from_current_acc euc_id (Ingcsv.Tx (base, spec)) =
               else Fn.id)
     | Payment_terminal_cashback details ->
         Tx.make ~cleared:(Some base.date) ~commodity_id:euc_id
-          ~debit:
-            (Account_id_map.singleton virt_checking_acc @@ cents base.amount)
-          ~credit:
-            (Account_id_map.singleton virt_counterparty @@ cents base.amount)
+          ~entries:(make_tx_entries ~on_checking:Debit_credit.Debit)
           ~labels:
             Labels.(
-              empty
-              |> add (Iban_label Account_tag) base.account
+              base_labels
               |> add (String_label Counterparty_name_tag)
                    details.counterparty_name
               |> add (String_label Card_seq_no_tag) details.card_sequence_no
@@ -54,14 +58,10 @@ let tx_from_current_acc euc_id (Ingcsv.Tx (base, spec)) =
               |> add Timestamp_label details.timestamp)
     | Online_banking_credit details ->
         Tx.make ~cleared:(Some base.date) ~commodity_id:euc_id
-          ~debit:
-            (Account_id_map.singleton virt_checking_acc @@ cents base.amount)
-          ~credit:
-            (Account_id_map.singleton virt_counterparty @@ cents base.amount)
+          ~entries:(make_tx_entries ~on_checking:Debit_credit.Debit)
           ~labels:
             Labels.(
-              empty
-              |> add (Iban_label Account_tag) base.account
+              base_labels
               |> add (String_label Counterparty_name_tag)
                    details.counterparty_name
               |> add (Iban_label Counterparty_iban_tag)
@@ -70,14 +70,10 @@ let tx_from_current_acc euc_id (Ingcsv.Tx (base, spec)) =
               |> add Timestamp_label details.timestamp)
     | Online_banking_debit details ->
         Tx.make ~cleared:(Some base.date) ~commodity_id:euc_id
-          ~debit:
-            (Account_id_map.singleton virt_counterparty @@ cents base.amount)
-          ~credit:
-            (Account_id_map.singleton virt_checking_acc @@ cents base.amount)
+          ~entries:(make_tx_entries ~on_checking:Debit_credit.Credit)
           ~labels:
             Labels.(
-              empty
-              |> add (Iban_label Account_tag) base.account
+              base_labels
               |> add (String_label Counterparty_name_tag)
                    details.counterparty_name
               |> add (Iban_label Counterparty_iban_tag)
@@ -85,14 +81,10 @@ let tx_from_current_acc euc_id (Ingcsv.Tx (base, spec)) =
               |> add (String_label Desc_tag) details.description)
     | Recurrent_direct_debit details ->
         Tx.make ~cleared:(Some base.date) ~commodity_id:euc_id
-          ~debit:
-            (Account_id_map.singleton virt_counterparty @@ cents base.amount)
-          ~credit:
-            (Account_id_map.singleton virt_checking_acc @@ cents base.amount)
+          ~entries:(make_tx_entries ~on_checking:Debit_credit.Credit)
           ~labels:
             Labels.(
-              empty
-              |> add (Iban_label Account_tag) base.account
+              base_labels
               |> add (Iban_label Counterparty_iban_tag)
                    details.counterparty_iban
               |> add (String_label Counterparty_name_tag)
@@ -108,24 +100,18 @@ let tx_from_current_acc euc_id (Ingcsv.Tx (base, spec)) =
                   add (String_label Other_party_tag) other_party)
     | Rounding_savings_deposit details ->
         Tx.make ~cleared:(Some base.date) ~commodity_id:euc_id
-          ~debit:
-            (Account_id_map.singleton virt_counterparty @@ cents base.amount)
-          ~credit:
-            (Account_id_map.singleton virt_checking_acc @@ cents base.amount)
+          ~entries:(make_tx_entries ~on_checking:Debit_credit.Credit)
           ~labels:
             Labels.(
-              empty
+              base_labels
               |> add (Unit_label Auto_round_savings_tag) ()
               |> add (String_label Savings_account_tag) details.savings_account)
     | Deposit details ->
         Tx.make ~cleared:(Some base.date) ~commodity_id:euc_id
-          ~debit:
-            (Account_id_map.singleton virt_checking_acc @@ cents base.amount)
-          ~credit:
-            (Account_id_map.singleton virt_counterparty @@ cents base.amount)
+          ~entries:(make_tx_entries ~on_checking:Debit_credit.Debit)
           ~labels:
             Labels.(
-              empty
+              base_labels
               |> add (Iban_label Counterparty_iban_tag)
                    details.counterparty_iban
               |> add (String_label Counterparty_name_tag)
@@ -134,13 +120,10 @@ let tx_from_current_acc euc_id (Ingcsv.Tx (base, spec)) =
               |> add (String_label Reference_tag) details.reference)
     | Ideal_debit details ->
         Tx.make ~cleared:(Some base.date) ~commodity_id:euc_id
-          ~debit:
-            (Account_id_map.singleton virt_counterparty @@ cents base.amount)
-          ~credit:
-            (Account_id_map.singleton virt_checking_acc @@ cents base.amount)
+          ~entries:(make_tx_entries ~on_checking:Debit_credit.Credit)
           ~labels:
             Labels.(
-              empty
+              base_labels
               |> add (Iban_label Counterparty_iban_tag)
                    details.counterparty_iban
               |> add (String_label Counterparty_name_tag)
@@ -150,13 +133,10 @@ let tx_from_current_acc euc_id (Ingcsv.Tx (base, spec)) =
               |> add Timestamp_label details.timestamp)
     | Batch_payment details ->
         Tx.make ~cleared:(Some base.date) ~commodity_id:euc_id
-          ~debit:
-            (Account_id_map.singleton virt_counterparty @@ cents base.amount)
-          ~credit:
-            (Account_id_map.singleton virt_checking_acc @@ cents base.amount)
+          ~entries:(make_tx_entries ~on_checking:Debit_credit.Debit)
           ~labels:
             Labels.(
-              empty
+              base_labels
               |> add (Iban_label Counterparty_iban_tag)
                    details.counterparty_iban
               |> add (String_label Counterparty_name_tag)
@@ -164,14 +144,6 @@ let tx_from_current_acc euc_id (Ingcsv.Tx (base, spec)) =
               |> add (String_label Desc_tag) details.description
               |> add (String_label Reference_tag) details.reference)
 
-let ba_from_current_acc (Ingcsv.Tx (base, _)) =
-  {
-    account = virt_checking_acc;
-    amount = Money.of_z base.resulting_balance;
-    labels = Labels.(empty |> add (Iban_label Account_tag) base.account);
-  }
-
 let les_from_current_acc euc_id tx =
   let%map tx' = tx_from_current_acc euc_id tx in
-  let ba = ba_from_current_acc tx in
-  [ Bal_assert_item ba; Tx_item tx' ]
+  [ Tx_item tx' ]
-- 
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