HTTP-Serving date-range based history query.

1 files changed, 40 insertions, 7 deletions

diff --git a/talerbank/app/views.py b/talerbank/app/views.py
index 5002e08..b21b2fe 100644
--- a/talerbank/app/views.py
+++ b/talerbank/app/views.py
@@ -40,6 +40,7 @@ from django.contrib.auth.models import User
 from django.db.models import Q
 from django.http import JsonResponse, HttpResponse
 from django.shortcuts import render, redirect
+from datetime import datetime
 from .models import BankAccount, BankTransaction
 from .amount import Amount
 from .schemas import validate_data
@@ -693,6 +694,43 @@ def build_history_response(qs, cancelled, user_account):
     return history
 
 ##
+# Serve a request of /history-range.
+#
+# @param request Django-specific HTTP request.
+# @param user_account the account whose history should be gotten.
+# @return Django-specific HTTP response object.
+@require_GET
+@login_via_headers
+def serve_history_range(request, user_account):
+    validate_data(request, request.GET.dict())
+
+    # Ordering.
+    ordering = request.GET.get("ordering", "descending")
+
+    # Note: those values got sanity-checked by "validate_data()"
+    start = int(request.GET.get("start"))
+    end = int(request.GET.get("end"))
+    
+    start_td = datetime.fromtimestamp(start)
+    end_td = datetime.fromtimestamp(end)
+
+    qs = query_history_range(user_account.bankaccount,
+                             request.GET.get("direction"),
+                             start_td,
+                             end_td,
+                             "descending" == ordering)
+
+    history = build_history_response(qs,
+                                     request.GET.get("cancelled",
+                                                     "show"),
+                                     user_account)
+    if not history:
+        return HttpResponse(status=204)
+    return JsonResponse(dict(data=history), status=200)
+
+
+
+##
 # Serve a request of /history.
 #
 # @param request Django-specific HTTP request.
@@ -717,12 +755,6 @@ def serve_history(request, user_account):
     if not start:
         start = 0 if "+" == sign else UINT64_MAX
 
-    # query_history_range (bank_account,
-    #                      direction,
-    #                      start,
-    #                      end,
-    #                      ordering)
-
     qs = query_history(user_account.bankaccount,
                        request.GET.get("direction"),
                        int(parsed_delta.group(2)),
@@ -731,7 +763,8 @@ def serve_history(request, user_account):
                        "descending" == ordering)
 
     history = build_history_response(qs,
-                                     request.GET.get("cancelled", "show"),
+                                     request.GET.get("cancelled",
+                                                     "show"),
                                      user_account)
     if not history:
         return HttpResponse(status=204)