__filename__ = "manualapprove.py"
__author__ = "Bob Mottram"
__license__ = "AGPL3+"
__version__ = "1.2.0"
__maintainer__ = "Bob Mottram"
__email__ = "bob@freedombone.net"
__status__ = "Production"
__module_group__ = "ActivityPub"

import os
from follow import followedAccountAccepts
from follow import followedAccountRejects
from follow import removeFromFollowRequests
from utils import loadJson
from utils import removeDomainPort
from utils import getPortFromDomain
from utils import getUserPaths
from utils import acctDir


def manualDenyFollowRequest(session, baseDir: str,
                            httpPrefix: str,
                            nickname: str, domain: str, port: int,
                            denyHandle: str,
                            federationList: [],
                            sendThreads: [], postLog: [],
                            cachedWebfingers: {}, personCache: {},
                            debug: bool,
                            projectVersion: str,
                            signingPrivateKeyPem: str) -> None:
    """Manually deny a follow request
    """
    accountsDir = acctDir(baseDir, nickname, domain)

    # has this handle already been rejected?
    rejectedFollowsFilename = accountsDir + '/followrejects.txt'
    if os.path.isfile(rejectedFollowsFilename):
        if denyHandle in open(rejectedFollowsFilename).read():
            removeFromFollowRequests(baseDir, nickname, domain,
                                     denyHandle, debug)
            print(denyHandle + ' has already been rejected as a follower of ' +
                  nickname)
            return

    removeFromFollowRequests(baseDir, nickname, domain, denyHandle, debug)

    # Store rejected follows
    with open(rejectedFollowsFilename, 'a+') as rejectsFile:
        rejectsFile.write(denyHandle + '\n')

    denyNickname = denyHandle.split('@')[0]
    denyDomain = \
        denyHandle.split('@')[1].replace('\n', '').replace('\r', '')
    denyPort = port
    if ':' in denyDomain:
        denyPort = getPortFromDomain(denyDomain)
        denyDomain = removeDomainPort(denyDomain)
    followedAccountRejects(session, baseDir, httpPrefix,
                           nickname, domain, port,
                           denyNickname, denyDomain, denyPort,
                           federationList,
                           sendThreads, postLog,
                           cachedWebfingers, personCache,
                           debug, projectVersion,
                           signingPrivateKeyPem)

    print('Follow request from ' + denyHandle + ' was denied.')


def _approveFollowerHandle(accountDir: str, approveHandle: str) -> None:
    """ Record manually approved handles so that if they unfollow and then
     re-follow later then they don't need to be manually approved again
    """
    approvedFilename = accountDir + '/approved.txt'
    if os.path.isfile(approvedFilename):
        if approveHandle not in open(approvedFilename).read():
            with open(approvedFilename, 'a+') as approvedFile:
                approvedFile.write(approveHandle + '\n')
    else:
        with open(approvedFilename, 'w+') as approvedFile:
            approvedFile.write(approveHandle + '\n')


def manualApproveFollowRequest(session, baseDir: str,
                               httpPrefix: str,
                               nickname: str, domain: str, port: int,
                               approveHandle: str,
                               federationList: [],
                               sendThreads: [], postLog: [],
                               cachedWebfingers: {}, personCache: {},
                               debug: bool,
                               projectVersion: str,
                               signingPrivateKeyPem: str) -> None:
    """Manually approve a follow request
    """
    handle = nickname + '@' + domain
    print('Manual follow accept: ' + handle +
          ' approving follow request from ' + approveHandle)
    accountDir = baseDir + '/accounts/' + handle
    approveFollowsFilename = accountDir + '/followrequests.txt'
    if not os.path.isfile(approveFollowsFilename):
        print('Manual follow accept: follow requests file ' +
              approveFollowsFilename + ' not found')
        return

    # is the handle in the requests file?
    approveFollowsStr = ''
    with open(approveFollowsFilename, 'r') as fpFollowers:
        approveFollowsStr = fpFollowers.read()
    exists = False
    approveHandleFull = approveHandle
    if approveHandle in approveFollowsStr:
        exists = True
    elif '@' in approveHandle:
        groupAccount = False
        if approveHandle.startswith('!'):
            groupAccount = True
        reqNick = approveHandle.split('@')[0].replace('!', '')
        reqDomain = approveHandle.split('@')[1].strip()
        reqPrefix = httpPrefix + '://' + reqDomain
        paths = getUserPaths()
        for userPath in paths:
            if reqPrefix + userPath + reqNick in approveFollowsStr:
                exists = True
                approveHandleFull = reqPrefix + userPath + reqNick
                if groupAccount:
                    approveHandleFull = '!' + approveHandleFull
                break
    if not exists:
        print('Manual follow accept: ' + approveHandleFull +
              ' not in requests file "' +
              approveFollowsStr.replace('\n', ' ') +
              '" ' + approveFollowsFilename)
        return

    with open(approveFollowsFilename + '.new', 'w+') as approvefilenew:
        updateApprovedFollowers = False
        followActivityfilename = None
        with open(approveFollowsFilename, 'r') as approvefile:
            for handleOfFollowRequester in approvefile:
                # is this the approved follow?
                if handleOfFollowRequester.startswith(approveHandleFull):
                    handleOfFollowRequester = \
                        handleOfFollowRequester.replace('\n', '')
                    handleOfFollowRequester = \
                        handleOfFollowRequester.replace('\r', '')
                    port2 = port
                    if ':' in handleOfFollowRequester:
                        port2 = getPortFromDomain(handleOfFollowRequester)
                    requestsDir = accountDir + '/requests'
                    followActivityfilename = \
                        requestsDir + '/' + handleOfFollowRequester + '.follow'
                    if os.path.isfile(followActivityfilename):
                        followJson = loadJson(followActivityfilename)
                        if followJson:
                            approveNickname = approveHandle.split('@')[0]
                            approveDomain = approveHandle.split('@')[1]
                            approveDomain = \
                                approveDomain.replace('\n', '')
                            approveDomain = \
                                approveDomain.replace('\r', '')
                            approvePort = port2
                            if ':' in approveDomain:
                                approvePort = getPortFromDomain(approveDomain)
                                approveDomain = removeDomainPort(approveDomain)
                            print('Manual follow accept: Sending Accept for ' +
                                  handle + ' follow request from ' +
                                  approveNickname + '@' + approveDomain)
                            followedAccountAccepts(session, baseDir,
                                                   httpPrefix,
                                                   nickname, domain, port,
                                                   approveNickname,
                                                   approveDomain,
                                                   approvePort,
                                                   followJson['actor'],
                                                   federationList,
                                                   followJson,
                                                   sendThreads, postLog,
                                                   cachedWebfingers,
                                                   personCache,
                                                   debug,
                                                   projectVersion, False,
                                                   signingPrivateKeyPem)
                    updateApprovedFollowers = True
                else:
                    # this isn't the approved follow so it will remain
                    # in the requests file
                    approvefilenew.write(handleOfFollowRequester)

    followersFilename = accountDir + '/followers.txt'
    if updateApprovedFollowers:
        # update the followers
        print('Manual follow accept: updating ' + followersFilename)
        if os.path.isfile(followersFilename):
            if approveHandleFull not in open(followersFilename).read():
                try:
                    with open(followersFilename, 'r+') as followersFile:
                        content = followersFile.read()
                        if approveHandleFull + '\n' not in content:
                            followersFile.seek(0, 0)
                            followersFile.write(approveHandleFull + '\n' +
                                                content)
                except Exception as e:
                    print('WARN: Manual follow accept. ' +
                          'Failed to write entry to followers file ' + str(e))
            else:
                print('WARN: Manual follow accept: ' + approveHandleFull +
                      ' already exists in ' + followersFilename)
        else:
            print('Manual follow accept: first follower accepted for ' +
                  handle + ' is ' + approveHandleFull)
            with open(followersFilename, 'w+') as followersFile:
                followersFile.write(approveHandleFull + '\n')

    # only update the follow requests file if the follow is confirmed to be
    # in followers.txt
    if approveHandleFull in open(followersFilename).read():
        # mark this handle as approved for following
        _approveFollowerHandle(accountDir, approveHandle)
        # update the follow requests with the handles not yet approved
        os.rename(approveFollowsFilename + '.new', approveFollowsFilename)
        # remove the .follow file
        if followActivityfilename:
            if os.path.isfile(followActivityfilename):
                os.remove(followActivityfilename)
    else:
        os.remove(approveFollowsFilename + '.new')