Add CSV support, start work on checkRevisedItems, Add switchDateRange

The CSV support is going to be for exporting the itemData from our database to use with external services that can import CSV files
checkRevisedItems will check a dateRange and return a list containing the ItemIDs that need to be fetched again wigh getItems because they were revised in some way
switchDateRange - More abstractions to other functions - This is because we use that specific switch statement multiple times now

ebay.py

@@ -7,6 +7,7 @@ from ebaysdk.exception import ConnectionError, ConnectionResponseError
 from ebaysdk.parallel import Parallel
 
 import datetime
+import csv
 
 # Application Settings
 app_id = ''
@@ -17,6 +18,11 @@ domain = 'api.sandbox.ebay.com'
 # User Identification
 usr_token = ''
 
+# CSV file data
+csv_path = ''
+csv_delimiter = ','
+csv_quote = '\''
+
 # Creates a dateRange list for use with glue
 def setDateRange(days=None, start=None, rangeType=None):
     # Default to searching for listings ending today
@@ -59,12 +65,52 @@ def setDateRange(days=None, start=None, rangeType=None):
     future = today+delta
     # Convert our dates into a format that ebay can recognize (ISO 8601)
     today = today.strftime("%Y-%m-%dT%H:%M:%S.%fZ")
+    # Force the future to be the absolute end of the day
     future = future.strftime("%Y-%m-%dT23:59:59.999Z")
 
     # If we want to manipulate either today or future, the following converts from a string back into a datetime object
     # datetime.datetime.strptime(today, '%Y-%m-%dT%H:%M:%S.%fZ')
     return {'from': today, 'to': future, 'type': rangeType}
 
+# We call this a couple times, so it gets its own function
+def switchDateRange(range=None, list=None):
+    # Switch statement to check which type of dateRange to search by
+    # This can be start/mod/end
+    def rangeType(condition):
+        # Cast the condition to a string
+        condition = str(condition)
+        switch = {
+            'start': 'Start', # Covers StartTimeFrom and StartTimeTo - Items that started in this date range
+            'mod': 'Mod', # Covers ModTimeFrom and ModTimeTo - Items modified in this date range
+            'end': 'End' # Covers EndTimeFrom and EndTimeTo - Items that end within this date range
+        }
+        # Return the approiate text or End if no ID matches
+        return switch.get(condition, 'End')
+                
+
+    # Override the dates in sellerList with values from dateRange, if provided  
+    if ('from' in range) & ('type' in range):
+        # Remove the list of keys from sellerList - We can only have one search range
+        for o in ['EndTimeFrom','ModTimeFrom','StartTimeFrom']:
+            try:
+                del list[o]
+            except KeyError:
+                continue
+
+        list[rangeType(range['type'])+'TimeFrom'] = range['from']
+
+    if ('to' in range) & ('type' in range):
+        # Remove the list of keys from sellerList - We can only have one search range
+        for o in ['EndTimeTo','ModTimeTo','StartTimeTo']:
+            try:
+                del list[o]
+            except KeyError:
+                continue
+
+        list[rangeType(range['type'])+'TimeTo'] = range['to']
+
+    return list
+
 # Here are the error codes that we currently have
 # None - No events have happened yet
 # 0 - Everything is fine
@@ -83,15 +129,15 @@ def getSeller(api, list):
     
     # Set our error conditions
     res = { 'error': { 'code': None, 'msg': None, 'fnc': 'getSeller' }, 'apiResponse': {} }
-    if(api == None):
+    if api == None:
         res['error']['code'] = '1'
         res['error']['msg'] = 'api is not set'
         return res
-    if(list == None) | (isinstance(list, dict) != True):
+    if (list == None) | (isinstance(list, dict) != True):
         res['error']['code'] = '2'
         res['error']['msg'] = 'list doesn\'t exist or is of wrong type, must be dict'
         return res
-    if('EndTimeFrom' not in list) | ('EndTimeTo' not in list):
+    if ('EndTimeFrom' not in list) | ('EndTimeTo' not in list):
         res['error']['code'] = '3'
         res['error']['msg'] = 'either "EndTimeFrom" or "EndTimeTo" is not set in list'
         return res
@@ -135,15 +181,15 @@ def getItems(api, itemList, itemArgs={}):
     
     # Set our error conditions
     res = { 'error': { 'code': None, 'msg': None, 'fnc': 'getItems' }, 'apiResponse': {} }
-    if(api == None):
+    if api == None:
         res['error']['code'] = '1'
         res['error']['msg'] = 'api is not set'
         return res
-    if(itemList == None) | (type(itemList) != type([])):
+    if (itemList == None) | (type(itemList) != type([])):
         res['error']['code'] = '2'
         res['error']['msg'] = 'itemList doesn\'t exist or is of wrong type, must be list containing one or more dicts'
         return res
-    if(itemArgs == None) | (isinstance(itemArgs, dict) != True):
+    if (itemArgs == None) | (isinstance(itemArgs, dict) != True):
         res['error']['code'] = '2'
         res['error']['msg'] = 'itemArgs doesn\'t exist or is of wrong type, must be dict'
         return res
@@ -171,6 +217,37 @@ def getItems(api, itemList, itemArgs={}):
     # After the loop is complete, return the whole res
     return res
 
+# Use the modTime range and only return data for items that have been modified in the timerange
+# Args we want are the modTime and NewItemFilter=True to get only items that have changed in this timerange
+def checkRevisedItems(api, itemArgs={}, dateRange={}):
+    # api is the connection to the Trading API
+    # itemList is a list containing itemIDs to check for updates
+    # itemArgs is an optional dict that contains extra details to refine the search returned by ebay 
+    res = { 'error': { 'code': None, 'msg': None, 'fnc': 'checkRevisedItems' }, 'apiResponse': {} }
+    if api == None:
+        res['error']['code'] = '1'
+        res['error']['msg'] = 'api is not set'
+        return res
+    if (itemList == None) | (isinstance(itemList, dict) != True):
+        res['error']['code'] = '2'
+        res['error']['msg'] = 'itemList doesn\'t exist or is of wrong type, must be list containing one or more dicts'
+        return res
+    if (itemArgs == None) | (isinstance(itemArgs, dict) != True):
+        res['error']['code'] = '2'
+        res['error']['msg'] = 'itemArgs doesn\'t exist or is of wrong type, must be dict'
+        return res
+
+    itemArgs['NewItemFilter'] = 'True'
+
+    # Switch statement to select the proper dateRange
+    itemArgs = switchDateRange(itemArgs, dateRange)
+
+    # 
+    response = api.execute('GetSellerEvents', itemArgs)
+
+    for i in itemList:
+
+    
 # storeItems uses the dict of Items provided by getItems and stores the information we want 
 def storeItems(itemList):
     # itemList is the apiRequest value presented as a result of getItems 
@@ -178,7 +255,7 @@ def storeItems(itemList):
 
     # Set our error conditions
     res = { 'error': { 'code': None, 'msg': None, 'fnc': 'storeItems' }, 'apiResponse': {} }
-    if(itemList == None) | (isinstance(itemList, dict) != True):
+    if (itemList == None) | (isinstance(itemList, dict) != True):
         res['error']['code'] = '2'
         res['error']['msg'] = 'itemList doesn\'t exist or is of wrong type, must be dict'
         return res
@@ -260,66 +337,32 @@ def storeItems(itemList):
     return res
 
 # Glue logic to run all the functions above properly
-def glue(api, sellerList, dateRange={}):
+def glue(api=None, sellerList={}, dateRange={}):
     # api is the connection to the api, this is passed to the functions as called
     # sellerList is the options that you can present ebay for searching (http://developer.ebay.com/DevZone/XML/docs/Reference/ebay/GetSellerEvents.html)
     # dateRange overrides EndTimeFrom and EndTimeTo from sellerList for ease of passing these required data with nothing else
 
     # Set our error conditions
     res = { 'error': { 'code': '0', 'msg': None, 'fnc': 'glue' }, 'apiResponse': {} }
-    if(api == None):
+    if api == None:
         res['error']['code'] = '1'
         res['error']['msg'] = 'api is not set'
         return res
-    if(sellerList == None) | (isinstance(sellerList, dict) != True):
+    if (sellerList == None) | (isinstance(sellerList, dict) != True):
         res['error']['code'] = '2'
         res['error']['msg'] = 'itemList doesn\'t exist or is of wrong type, must be dict'
         return res
-    if(dateRange == None) | (isinstance(dateRange, dict) != True):
+    if (dateRange == None) | (isinstance(dateRange, dict) != True):
         res['error']['code'] = '2'
         res['error']['msg'] = 'dateRange doesn\'t exist or is of wrong type, must be dict'
         return res
 
-    # Switch statement to check which type of dateRange to search by
+    # Switch statement to select the proper dateRange
-    # This can be start/mod/end
+    sellerList = switchDateRange(sellerList, dateRange)
-    def rangeType(condition):
-        # Cast the condition to a string
-        condition = str(condition)
-        switch = {
-            'start': 'Start', # Covers StartTimeFrom and StartTimeTo - Items that started in this date range
-            'mod': 'Mod', # Covers ModTimeFrom and ModTimeTo - Items modified in this date range
-            'end': 'End' # Covers EndTimeFrom and EndTimeTo - Items that end within this date range
-        }
-        # Return the approiate text or End if no ID matches
-        return switch.get(condition, 'End')
-                
-
-    # Override the dates in sellerList with values from dateRange, if provided  
-    if ('from' in dateRange) & ('type' in dateRange):
-        # Remove the list of keys from sellerList - We can only have one search range
-        for o in ['EndTimeFrom','ModTimeFrom','StartTimeFrom']:
-            try:
-                del sellerList[o]
-            except KeyError:
-                continue
-
-        sellerList[rangeType(dateRange['type'])+'TimeFrom'] = dateRange['from']
-
-    if ('to' in dateRange) & ('type' in dateRange):
-        # Remove the list of keys from sellerList - We can only have one search range
-        for o in ['EndTimeTo','ModTimeTo','StartTimeTo']:
-            try:
-                del sellerList[o]
-            except KeyError:
-                continue
-
-        sellerList[rangeType(dateRange['type'])+'TimeTo'] = dateRange['to']
-    
     
     seller = getSeller(api, sellerList)
     if seller['error']['code'] == '0':
         sellerList = seller['apiResponse']
-        print seller['apiResponse']
         seller = None # Unset any data we no-longer need - Saves on memory
             
         items = getItems(api, sellerList)
@@ -346,15 +389,29 @@ try:
     api = Trading(domain=domain, appid=app_id, devid=dev_id, certid=crt_id, token=usr_token, config_file=None, debug=False, parellel=p)
 
     # Example usage, returns a dict containing all items of interst (based on the functions above)
-    itemData = glue(api=api, sellerList={'Pagination': {'EntriesPerPage':'1', 'PageNumber':'1'}}, dateRange=setDateRange())
+    itemData = glue(api=api, sellerList={}, dateRange=setDateRange())
- 
-    # Store the itemIDs so that we can use them to check which ones were modified
     itemlist = []
-    for i in itemData:
-        itemlist.append(i)
 
+    # Write a CSV file containing some of the data we're interested in
+    with open(csv_path, 'wb') as csvfile:
+        Part Number Manufacturer    Condition   Price   Quantity    Description
+        fieldnames = ['Part Number', 'Manufacturer', 'Condition', 'Price', 'Quantity', 'Description']
+        writer = csv.DictWriter(csvfile, fieldnames=fieldnames, delimiter=csv_delimiter, quotechar=csv_quote, quoting=csv.QUOTE_MINIMAL)
+
+        for i in itemData:
+            data = {
+                'Part Number': i['mpn'],
+                'Manufacturer': i['mfg'],
+                'Condition': i['condition']['msg'],
+                'Price': i['price']['val']+' '+i['price']['cur'],
+                'Quantity': str(int(i['quantity']['total'])-int(i['quantity']['sold'])),
+                'Description': i['title']
+            }
+
+            writer.writerow(data)
+
+            # Store the itemIDs so that we can use them to check which ones were modified
+            itemlist.append(i)
 
 except ConnectionError as e:
     print(e)
-
-