Function for getting a list of followers

epicyon.py

@@ -35,6 +35,7 @@ from follow import followPerson
 from follow import followerOfPerson
 from follow import unfollowPerson
 from follow import unfollowerOfPerson
+from follow import getFollowersOfPerson
 from tests import testPostMessageBetweenServers
 from tests import runAllTests
 from config import setConfigParam
@@ -273,5 +274,5 @@ if not os.path.isdir(baseDir+'/accounts/'+nickname+'@'+domain):
 if not os.path.isdir(baseDir+'/accounts/sharedinbox@'+domain):
     print('Creating shared inbox')
     createSharedInbox(baseDir,'sharedinbox',domain,port,httpPrefix)
-    
+
 runDaemon(baseDir,domain,port,httpPrefix,federationList,useTor,debug)

follow.py

@@ -13,6 +13,29 @@ import sys
 from person import validNickname
 from utils import domainPermitted
 
+def getFollowersOfPerson(baseDir: str,nickname: str,domain: str,followFile='following.txt') -> []:
+    """Returns a list containing the followers of the given person
+    Used by the shared inbox to know who to send incoming mail to
+    """
+    followers=[]
+    handle=nickname.lower()+'@'+domain.lower()
+    if not os.path.isdir(baseDir+'/accounts/'+handle):
+        return followers
+    for subdir, dirs, files in os.walk(baseDir+'/accounts'):
+        for account in dirs:
+            filename = os.path.join(subdir, account)+'/'+followFile
+            if account == handle or account.startswith('sharedinbox@'):
+                continue
+            if not os.path.isfile(filename):
+                continue
+            with open(filename, 'r') as followingfile:
+                for followingHandle in followingfile:
+                    if followingHandle.replace('\n','')==handle:
+                        if account not in followers:
+                            followers.append(account)
+                        break
+    return followers
+
 def followPerson(baseDir: str,nickname: str, domain: str, \
                  followNickname: str, followDomain: str, \
                  federationList: [], followFile='following.txt') -> bool:

tests.py

@@ -29,6 +29,7 @@ from follow import followPerson
 from follow import followerOfPerson
 from follow import unfollowPerson
 from follow import unfollowerOfPerson
+from follow import getFollowersOfPerson
 from person import createPerson
 from person import setPreferredNickname
 from person import setBio
@@ -230,6 +231,47 @@ def testPostMessageBetweenServers():
     # queue item removed
     assert len([name for name in os.listdir(queuePath) if os.path.isfile(os.path.join(queuePath, name))])==0
 
+    os.chdir(baseDir)
+    shutil.rmtree(aliceDir)
+    shutil.rmtree(bobDir)
+
+def testFollowersOfPerson():
+    print('testFollowersOfPerson')
+    currDir=os.getcwd()
+    nickname='mxpop'
+    domain='diva.domain'
+    password='birb'
+    port=80
+    httpPrefix='https'
+    federationList=[]
+    baseDir=currDir+'/.tests_followersofperson'
+    if os.path.isdir(baseDir):
+        shutil.rmtree(baseDir)
+    os.mkdir(baseDir)
+    os.chdir(baseDir)    
+    createPerson(baseDir,nickname,domain,port,httpPrefix,True,password)
+    createPerson(baseDir,'maxboardroom',domain,port,httpPrefix,True,password)
+    createPerson(baseDir,'ultrapancake',domain,port,httpPrefix,True,password)
+    createPerson(baseDir,'drokk',domain,port,httpPrefix,True,password)
+    createPerson(baseDir,'sausagedog',domain,port,httpPrefix,True,password)
+
+    clearFollows(baseDir,nickname,domain)
+    followPerson(baseDir,nickname,domain,'maxboardroom',domain,federationList)
+    followPerson(baseDir,'drokk',domain,'ultrapancake',domain,federationList)
+    # deliberate duplication
+    followPerson(baseDir,'drokk',domain,'ultrapancake',domain,federationList)
+    followPerson(baseDir,'sausagedog',domain,'ultrapancake',domain,federationList)
+    followPerson(baseDir,nickname,domain,'ultrapancake',domain,federationList)
+    followPerson(baseDir,nickname,domain,'someother','randodomain.net',federationList)
+
+    followList=getFollowersOfPerson(baseDir,'ultrapancake',domain)
+    assert len(followList)==3
+    assert 'mxpop@'+domain in followList
+    assert 'drokk@'+domain in followList
+    assert 'sausagedog@'+domain in followList
+    os.chdir(currDir)
+    shutil.rmtree(baseDir)
+    
 def testFollows():
     print('testFollows')
     currDir=os.getcwd()
@@ -359,5 +401,6 @@ def runAllTests():
     testThreads()
     testCreatePerson()
     testAuthentication()
-    testFollows()
+    testFollowersOfPerson()
+    testFollows()    
     print('Tests succeeded\n')