From a51517f64c83c23545ebd8a935baa311f0de635a Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Wed, 2 Nov 2022 17:51:42 +0100
Subject: -implement missing functions

---
 src/auditordb/pg_select_purse_expired.c | 115 ++++++++++++++++++++++++++++++++
 1 file changed, 115 insertions(+)

(limited to 'src/auditordb/pg_select_purse_expired.c')

diff --git a/src/auditordb/pg_select_purse_expired.c b/src/auditordb/pg_select_purse_expired.c
index 7a9ba915d..49a8c5a97 100644
--- a/src/auditordb/pg_select_purse_expired.c
+++ b/src/auditordb/pg_select_purse_expired.c
@@ -25,6 +25,87 @@
 #include "pg_select_purse_expired.h"
 #include "pg_helper.h"
 
+
+/**
+ * Closure for #purse_expired_cb().
+ */
+struct PurseExpiredContext
+{
+
+  /**
+   * Function to call for each expired purse.
+   */
+  TALER_AUDITORDB_ExpiredPurseCallback cb;
+
+  /**
+   * Closure for @e cb
+   */
+  void *cb_cls;
+
+  /**
+   * Plugin context.
+   */
+  struct PostgresClosure *pg;
+
+  /**
+   * Query status to return.
+   */
+  enum GNUNET_DB_QueryStatus qs;
+};
+
+
+/**
+ * Helper function for #TAH_PG_select_purse_expired().
+ * To be called with the results of a SELECT statement
+ * that has returned @a num_results results.
+ *
+ * @param cls closure of type `struct PurseExpiredContext *`
+ * @param result the postgres result
+ * @param num_results the number of results in @a result
+ */
+static void
+purse_expired_cb (void *cls,
+                  PGresult *result,
+                  unsigned int num_results)
+{
+  struct PurseExpiredContext *eic = cls;
+  struct PostgresClosure *pg = eic->pg;
+
+  for (unsigned int i = 0; i < num_results; i++)
+  {
+    struct TALER_PurseContractPublicKeyP purse_pub;
+    struct GNUNET_TIME_Timestamp expiration_date;
+    struct TALER_Amount balance;
+    struct GNUNET_PQ_ResultSpec rs[] = {
+      GNUNET_PQ_result_spec_auto_from_type ("purse_pub",
+                                            &purse_pub),
+      TALER_PQ_RESULT_SPEC_AMOUNT ("balance",
+                                   &balance),
+      GNUNET_PQ_result_spec_timestamp ("expiration_date",
+                                       &expiration_date),
+      GNUNET_PQ_result_spec_end
+    };
+
+    if (GNUNET_OK !=
+        GNUNET_PQ_extract_result (result,
+                                  rs,
+                                  i))
+    {
+      GNUNET_break (0);
+      eic->qs = GNUNET_DB_STATUS_HARD_ERROR;
+      return;
+    }
+    eic->qs = i + 1;
+    if (GNUNET_OK !=
+        eic->cb (eic->cb_cls,
+                 &purse_pub,
+                 &balance,
+                 expiration_date))
+      break;
+  }
+}
+
+
 enum GNUNET_DB_QueryStatus
 TAH_PG_select_purse_expired (
   void *cls,
@@ -32,4 +113,38 @@ TAH_PG_select_purse_expired (
   TALER_AUDITORDB_ExpiredPurseCallback cb,
   void *cb_cls)
 {
+  struct PostgresClosure *pg = cls;
+  struct GNUNET_TIME_Timestamp now
+    = GNUNET_TIME_timestamp_get ();
+  struct GNUNET_PQ_QueryParam params[] = {
+    GNUNET_PQ_query_param_auto_from_type (master_pub),
+    GNUNET_PQ_query_param_timestamp (&now),
+    GNUNET_PQ_query_param_end
+  };
+  struct PurseExpiredContext eic = {
+    .cb = cb,
+    .cb_cls = cb_cls,
+    .pg = pg
+  };
+  enum GNUNET_DB_QueryStatus qs;
+
+  PREPARE (pg,
+           "auditor_select_expired_purses",
+           "SELECT"
+           " purse_pub"
+           ",expiration_date"
+           ",balance_val"
+           ",balance_frac"
+           " FROM auditor_purses"
+           " WHERE master_pub=$1"
+           " AND expiration_date<$2;");
+  qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn,
+                                             "auditor_select_expired_purses",
+                                             params,
+                                             &purse_expired_cb,
+                                             &eic);
+  if (qs > 0)
+    return eic.qs;
+  GNUNET_break (GNUNET_DB_STATUS_HARD_ERROR != qs);
+  return qs;
 }
-- 
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