From e6cd3507114e625f89d8d2383fd7a88b21d22b97 Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Wed, 20 May 2020 17:34:55 +0200
Subject: more work on tipping implementation

---
 .../taler-merchant-httpd_private-get-tips-ID.c     | 124 +++++++++++++++++++++
 1 file changed, 124 insertions(+)
 create mode 100644 src/backend/taler-merchant-httpd_private-get-tips-ID.c

(limited to 'src/backend/taler-merchant-httpd_private-get-tips-ID.c')

diff --git a/src/backend/taler-merchant-httpd_private-get-tips-ID.c b/src/backend/taler-merchant-httpd_private-get-tips-ID.c
new file mode 100644
index 00000000..f186363d
--- /dev/null
+++ b/src/backend/taler-merchant-httpd_private-get-tips-ID.c
@@ -0,0 +1,124 @@
+/*
+  This file is part of TALER
+  (C) 2017-2020 Taler Systems SA
+
+  TALER is free software; you can redistribute it and/or modify it under the
+  terms of the GNU General Public License as published by the Free Software
+  Foundation; either version 3, or (at your option) any later version.
+
+  TALER is distributed in the hope that it will be useful, but WITHOUT ANY
+  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+  A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License along with
+  TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+*/
+/**
+ * @file backend/taler-merchant-httpd_get-tips-ID.c
+ * @brief implementation of a GET /tips/ID handler
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include <microhttpd.h>
+#include <jansson.h>
+#include <taler/taler_json_lib.h>
+#include <taler/taler_signatures.h>
+#include "taler-merchant-httpd.h"
+#include "taler-merchant-httpd_mhd.h"
+#include "taler-merchant-httpd_exchanges.h"
+#include "taler-merchant-httpd_tip-pickup.h"
+
+
+/**
+ * Manages a GET /tips/$ID call, returning the status of a tip.
+ *
+ * @param rh context of the handler
+ * @param connection the MHD connection to handle
+ * @param[in,out] hc context with further information about the request
+ * @return MHD result code
+ */
+MHD_RESULT
+TMH_private_get_tips_ID (const struct TMH_RequestHandler *rh,
+                         struct MHD_Connection *connection,
+                         struct TMH_HandlerContext *hc)
+{
+  char *exchange_url;
+  struct GNUNET_HashCode tip_id;
+  struct TALER_Amount tip_amount;
+  struct TALER_Amount tip_amount_left;
+  struct GNUNET_TIME_Absolute timestamp;
+  struct GNUNET_TIME_Absolute timestamp_expire;
+  MHD_RESULT ret;
+  enum GNUNET_DB_QueryStatus qs;
+
+  GNUNET_assert (NULL != hc->infix);
+  if (GNUNET_OK !=
+      GNUNET_CRYPTO_hash_from_string (hc->infix,
+                                      &tip_id))
+  {
+    /* tip_id has wrong encoding */
+    GNUNET_break_op (0);
+    return TALER_MHD_reply_with_error (connection,
+                                       MHD_HTTP_BAD_REQUEST,
+                                       TALER_EC_PARAMETER_MALFORMED,
+                                       "tip_id malformed");
+  }
+
+  db->preflight (db->cls);
+  // FIXME: logic here is completely bonkers!
+  qs = db->lookup_tip_by_id (db->cls,
+                             &tip_id,
+                             &exchange_url,
+                             &extra,
+                             &tip_amount,
+                             &tip_amount_left,
+                             &timestamp);
+
+  if (GNUNET_DB_STATUS_SUCCESS_ONE_RESULT != qs)
+  {
+    unsigned int response_code;
+    enum TALER_ErrorCode ec;
+
+    switch (qs)
+    {
+    case GNUNET_DB_STATUS_SUCCESS_NO_RESULTS:
+      ec = TALER_EC_TIP_PICKUP_TIP_ID_UNKNOWN;
+      response_code = MHD_HTTP_NOT_FOUND;
+      break;
+    case GNUNET_DB_STATUS_SOFT_ERROR:
+      ec = TALER_EC_TIP_PICKUP_DB_ERROR_SOFT;
+      response_code = MHD_HTTP_INTERNAL_SERVER_ERROR;
+      break;
+    case GNUNET_DB_STATUS_HARD_ERROR:
+      ec = TALER_EC_TIP_PICKUP_DB_ERROR_HARD;
+      response_code = MHD_HTTP_INTERNAL_SERVER_ERROR;
+      break;
+    default:
+      GNUNET_break (0);
+      ec = TALER_EC_INTERNAL_LOGIC_ERROR;
+      response_code = MHD_HTTP_INTERNAL_SERVER_ERROR;
+      break;
+    }
+    return TALER_MHD_reply_with_error (connection,
+                                       response_code,
+                                       ec,
+                                       "Could not determine exchange URL for the given tip id");
+  }
+
+  timestamp_expire = GNUNET_TIME_absolute_add (timestamp,
+                                               GNUNET_TIME_UNIT_DAYS);
+
+  ret = TALER_MHD_reply_json_pack (
+    connection,
+    MHD_HTTP_OK,
+    "{s:s, s:o, s:o, s:o, s:o, s:o?}",
+    "reason", reason,
+    "total_authorized", TALER_JSON_from_amount (&tip_amount),
+    "total_picked_up", TALER_JSON_from_amount (&tip_amount_left),
+    "reserve_pub", GNUNET_JSON_from_data_auto (&reserve_pub),
+    "expiration", GNUNET_JSON_from_time_abs (timestamp_expire),
+    "pickups", pickups);
+
+  GNUNET_free (exchange_url);
+  return ret;
+}
-- 
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