From 2e7413a68fed37543e67c6e7b054f2bd62a9f931 Mon Sep 17 00:00:00 2001
From: Pat Pannuto <pat.pannuto@gmail.com>
Date: Thu, 23 Jun 2016 23:33:53 -0400
Subject: [PATCH] Add 'recently purchased items' to terminal

---
 chezbetty/models/transaction.py              |  2 +-
 chezbetty/models/user.py                     | 15 ++++++++++++
 chezbetty/static/js/chezbetty-terminal.js    |  6 +++++
 chezbetty/templates/terminal/terminal.jinja2 | 25 +++++++++++++++++++-
 4 files changed, 46 insertions(+), 2 deletions(-)

diff --git a/chezbetty/models/transaction.py b/chezbetty/models/transaction.py
index e5972d7..b55d6da 100644
--- a/chezbetty/models/transaction.py
+++ b/chezbetty/models/transaction.py
@@ -301,7 +301,7 @@ def __get_events(self):
 
 @property
 def __events(self):
-    return __get_events(self).all()
+    return __get_events(self)
 
 account.Account.get_events = __get_events
 account.Account.events = __events
diff --git a/chezbetty/models/user.py b/chezbetty/models/user.py
index d17bb64..7ec42e8 100644
--- a/chezbetty/models/user.py
+++ b/chezbetty/models/user.py
@@ -258,6 +258,21 @@ def get_user_count_cumulative(cls):
                         .all()
         return utility.timeseries_cumulative(rows)
 
+    def iterate_recent_items(self, limit=None, allow_duplicates=False):
+        items = set()
+        count = 0
+        for e in self.events:
+            if e.type == 'purchase':
+                for transaction in e.transactions:
+                    if transaction.type == 'purchase':
+                        for line_item in transaction.subtransactions:
+                            if (line_item.item not in items) or allow_duplicates:
+                                count += 1
+                                if limit is not None and count > limit:
+                                    return
+                                yield line_item.item
+                                items.add(line_item.item)
+
     def __make_salt(self):
         return binascii.b2a_base64(open("/dev/urandom", "rb").read(32))[:-3].decode("ascii")
 
diff --git a/chezbetty/static/js/chezbetty-terminal.js b/chezbetty/static/js/chezbetty-terminal.js
index 1fd97ad..1afe006 100644
--- a/chezbetty/static/js/chezbetty-terminal.js
+++ b/chezbetty/static/js/chezbetty-terminal.js
@@ -756,6 +756,12 @@ $('#tag-items').on('click', '.tag-item', function () {
 	$('#panel-purchase').show();
 });
 
+$('#recently-purchased').on('click', '.tag-item', function () {
+	console.log($(this));
+	var item_id = $(this).attr('data-item-id');
+	add_item_id(item_id);
+});
+
 // DEPOSIT
 
 // Called to let the user know we got the bill, we just need time to count it.
diff --git a/chezbetty/templates/terminal/terminal.jinja2 b/chezbetty/templates/terminal/terminal.jinja2
index 1032f1e..b607a71 100644
--- a/chezbetty/templates/terminal/terminal.jinja2
+++ b/chezbetty/templates/terminal/terminal.jinja2
@@ -262,8 +262,31 @@
           </div>
         </div>
 
+        {# Recently purchased items #}
+        <hr />
+        <h4>Quick-Select Most Recently Purchased Items</h4>
+        <div id="recently-purchased" class="row">
+          <div class="col-md-1"></div>
+          {% for item in user.iterate_recent_items(limit=5) %}
+          <div class="col-md-2">
+            <div class="tag-item" data-item-id="{{ item.id }}">
+              {% if item.img %}
+              <img src="/dynamic/item/{{item.id}}.jpg" width="150px" />
+              {% else %}
+              <img src="{{'chezbetty:static/placeholder_300px.png'|static_url}}" width="150px" />
+              {% endif %}
+              <div class="tag-item-name">
+                {{ item.name }}
+              </div>
+            </div>
+          </div>
+          {% endfor %}
+        </div>
+
+        <hr />
+
         {# Purchase buttons #}
-        <div class="row">
+        <div id="purchase-buttons" class="row">
           <div class="col-md-12">
             <button type="button" id="purchase-button-logout" class="btn btn-success btn-lg btn-submit btn-submit-purchase">{{ _('Logout') }}</button>
             <button type="button" id="purchase-button-purchaselogout" class="btn btn-success btn-lg btn-submit btn-submit-purchase" style="display:none;">{{ _('Purchase & Logout') }}</button>