chiark / gitweb /
Add code to propagate changes, and match events
[gooswapper] / gooswapper.py
index bf5944f0cb2a0001b99f2451b88ff30e68c0e563..ee99fb54a23a41f321cb0c78e147df9c4630dbca 100644 (file)
@@ -26,6 +26,7 @@ import apiclient.discovery
 import oauth2client
 import oauth2client.file
 import oauth2client.client
+import googleapiclient.errors
 
 #Not sure what the distribution approach here is...
 gcal_client_id = '805127902516-ptbbtgpq9o8pjr6r3k6hsm60j589o85u.apps.googleusercontent.com'
@@ -67,13 +68,38 @@ def get_ex_cred(username="SANGER\mv3",password=None):
         password = getpass.getpass(prompt="Password for user %s: " % username)
     return exchangelib.ServiceAccount(username,password)
 
-def ex_login(emailaddr,autodiscover=True):
+def ex_login(emailaddr,ad_cache_path=None):
     global exchange_credential
+    autodiscover = True
     if exchange_credential is None:
         exchange_credential = get_ex_cred()
-    return exchangelib.Account(emailaddr,
-                               credentials = exchange_credential,
-                               autodiscover = autodiscover)
+    if ad_cache_path is not None:
+        try:
+            with open(ad_cache_path,"rb") as f:
+                url,auth_type = pickle.load(f)
+                autodiscover = False
+        except FileNotFoundError:
+            pass
+
+    if autodiscover:
+        ex_ac = exchangelib.Account(emailaddr,
+                                    credentials = exchange_credential,
+                                    autodiscover = autodiscover)
+        if ad_cache_path is not None:
+            cache=(ex_ac.protocol.service_endpoint,
+                   ex_ac.protocol.auth_type)
+            with open(ad_cache_path,"wb") as f:
+                pickle.dump(cache,f)
+    else:
+        ex_conf = exchangelib.Configuration(service_endpoint=url,
+                                            credentials=exchange_credential,
+                                            auth_type=auth_type)
+        ex_ac = exchangelib.Account(emailaddr,
+                                    config=ex_conf,
+                                    autodiscover=False,
+                                    access_type=exchangelib.DELEGATE)
+
+    return ex_ac
 
 def get_ex_events(calendar):
     ans={}
@@ -99,28 +125,39 @@ def ex_event_changes(old,new):
                                                               len(deleted)))
     return added, deleted, changed
 
+def build_gcal_event_from_ex(event,gcal_tz):
+    gevent={}
+    gevent["summary"]=event.subject
+    if event.is_all_day:
+        gevent["end"]={"date": str(event.end.astimezone(gcal_tz).date())}
+        gevent["start"]={"date": str(event.start.astimezone(gcal_tz).date())}
+    else:
+        gevent["end"]={"dateTime": event.end.isoformat(),
+                       "timeZone": event.end.tzname()}
+        gevent["start"]={"dateTime": event.start.isoformat(),
+                         "timeZone": event.start.tzname()}
+    if event.text_body.strip() != '':
+        gevent["description"] = event.text_body
+    if event.location is not None:
+        gevent["location"] = event.location
+    gevent["extendedProperties"]={"shared": {"ex_id": event.item_id}}
+    return gevent
+
 def add_ex_to_gcal(ex_acct,
                    gcal_acct,gcal_tz,events,
                    added,
                    gcal_id="primary"):
     for ev_id in added:
         event = get_ex_event_by_itemid(ex_acct.calendar,ev_id)
-        if event.is_all_day:
-            gevent={}
-            gevent["summary"]=event.subject
-            gevent["end"]={"date": str(event.end.astimezone(gcal_tz).date())}
-            gevent["start"]={"date": str(event.start.astimezone(gcal_tz).date())}
-            if event.text_body.strip() != '':
-                gevent["description"] = event.text_body
-            if event.location is not None:
-                gevent["location"] = event.location
-            gevent["extended_properties"]={"shared": {"ex_id": event.item_id}}
-            gevent=gcal_acct.events().insert(calendarId=gcal_id, body=gevent).execute()
+        if not event.is_recurring:
+            gevent = build_gcal_event_from_ex(event,gcal_tz)
+            gevent = gcal_acct.events().insert(calendarId=gcal_id,
+                                               body=gevent).execute()
             event.gcal_link = gevent.get("id")
             event.save()
-            events[event.item_id] = events[event.item_id]._replace(changekey=event.changekey)
+            events[event.item_id] = events[event.item_id]._replace(changekey=event.changekey,gcal_link=event.gcal_link)
         else:
-            logger.warning("only all-day events supported")
+            logger.warning("recurring events not yet supported")
 
 def del_ex_to_gcal(ex_acct, gcal_acct, events, deleted, gcal_id="primary"):
     for ev_id in deleted:
@@ -128,6 +165,62 @@ def del_ex_to_gcal(ex_acct, gcal_acct, events, deleted, gcal_id="primary"):
             gcal_acct.events().delete(calendarId=gcal_id,
                                       eventId=events[ev_id].gcal_link,
                                       sendUpdates="none").execute()
+
+def update_ex_to_gcal(ex_acct,
+                      gcal_acct,gcal_tz,
+                      events,changed,
+                      gcal_id="primary"):
+    for ev_id in changed:
+        event = get_ex_event_by_itemid(ex_acct.calendar,ev_id)
+        if not event.is_recurring:
+            gevent = build_gcal_event_from_ex(event,gcal_tz)
+            gevent = gcal_acct.events().update(calendarId=gcal_id,
+                                               eventId=event.gcal_link,
+                                               body=gevent,
+                                               sendUpdates="none").execute()
+        else:
+            logger.warning("recurring events not yet supported")
+
+def match_ex_to_gcal(ex_acct,gcal_acct,gcal_tz,events,gcal_id="primary"):
+    recur = 0
+    matched = 0
+    skipped = 0
+    for ev_id in events:
+        event = get_ex_event_by_itemid(ex_acct.calendar,ev_id)
+        if event.is_recurring:
+            recur += 1
+            continue
+        elif event.gcal_link is not None:
+            skipped += 1
+            continue
+        matches = gcal_acct.events().list(calendarId=gcal_id,
+                                          timeMin=event.start.isoformat(),
+                                          timeMax=event.end.isoformat()).execute()
+        for ge in matches['items']:
+            if ge['summary'].strip()==event.subject.strip():
+                logger.info("Matching '%s' starting at %s" % (event.subject,
+                                                              event.start.isoformat()))
+                event.gcal_link = ge['id']
+                event.is_response_requested=None
+                event.save(update_fields=["gcal_link"])
+#                event.save(conflict_resolution="NeverOverwrite")
+                events[event.item_id] = events[event.item_id]._replace(changekey=event.changekey,gcal_link=event.gcal_link)
+                gevent = {}
+                gevent["start"] = ge["start"]
+                gevent["end"] = ge["end"]
+                gevent["extendedProperties"]={"shared": {"ex_id": event.item_id}}
+                try:
+                    gcal_acct.events().update(calendarId=gcal_id,
+                                              eventId=event.gcal_link,
+                                              body=gevent,
+                                              sendUpdates="none").execute()
+                #this may fail if we don't own the event
+                except googleapiclient.errors.HttpError as err:
+                    if err.resp.status == 403:
+                        pass
+                matched += 1
+                break
+    logger.info("Matched %d events, skipped %d with existing link, and %d recurring ones" % (matched,skipped,recur))
     
 def get_gcal_cred():
     #each such file can only store a single credential
@@ -160,7 +253,7 @@ def main():
     except FileNotFoundError:
         cache = None
 
-    ex_account = ex_login("mv3@sanger.ac.uk")
+    ex_account = ex_login("mv3@sanger.ac.uk",".gooswapper_exch_conf.dat")
     current = get_ex_events(ex_account.calendar)
 
     gcal_account = gcal_login()
@@ -172,6 +265,9 @@ def main():
         #delete op needs the "cache" set, as that has the link ids in
         #for events that are now deleted
         del_ex_to_gcal(ex_account,gcal_account,cache,deleted)
+        update_ex_to_gcal(ex_account,gcal_account,gcal_tz,current,changed)
+    else:
+        match_ex_to_gcal(ex_account,gcal_account,gcal_tz,current)
         
     with open(cachepath,"wb") as f:
         pickle.dump(current,f)