def org_group_remove(request, url_prefix, group_id):
    # Request header may missing HTTP_REFERER, we need to handle that case.
    next = request.META.get("HTTP_REFERER", None)
    if not next:
        next = seahub_settings.SITE_ROOT

    try:
        group_id_int = int(group_id)
    except ValueError:
        return HttpResponseRedirect(next)

    # Check whether is the org group.
    org_id = get_org_id_by_group(group_id_int)
    if request.user.org["org_id"] != org_id:
        return render_permission_error(
            request,
            _(u"This group doesn't belong to current organazation"),
            extra_ctx={"org": request.user.org, "base_template": "org_base.html"},
        )

    try:
        ccnet_threaded_rpc.remove_group(group_id_int, request.user.username)
        seafserv_threaded_rpc.remove_repo_group(group_id_int, None)
        ccnet_threaded_rpc.remove_org_group(org_id, group_id_int)
    except SearpcError, e:
        return render_error(request, e.msg, extra_ctx={"org": request.user.org, "base_template": "org_base.html"})

def repo_remove_share(request):
    """
    If repo is shared from one person to another person, only these two peson
    can remove share.
    If repo is shared from one person to a group, then only the one share the
    repo and group staff can remove share.
    """
    repo_id = request.GET.get('repo_id', '')
    group_id = request.GET.get('gid', '')
    from_email = request.GET.get('from', '')
    if not is_valid_username(from_email):
        return render_error(request, _(u'Argument is not valid'))
    username = request.user.username

    # if request params don't have 'gid', then remove repos that share to
    # to other person; else, remove repos that share to groups
    if not group_id:
        to_email = request.GET.get('to', '')
        if not is_valid_username(to_email):
            return render_error(request, _(u'Argument is not valid'))

        if username != from_email and username != to_email:
            return render_permission_error(request, _(u'Failed to remove share'))

        if is_org_context(request):
            org_id = request.user.org.org_id
            org_remove_share(org_id, repo_id, from_email, to_email)
        else:
            seaserv.remove_share(repo_id, from_email, to_email)
    else:
        try:
            group_id = int(group_id)
        except:
            return render_error(request, _(u'group id is not valid'))

        group = seaserv.get_group(group_id)
        if not group:
            return render_error(request, _(u"Failed to unshare: the group doesn't exist."))

        if not seaserv.check_group_staff(group_id, username) \
                and username != from_email:
            return render_permission_error(request, _(u'Failed to remove share'))

        if is_org_group(group_id):
            org_id = get_org_id_by_group(group_id)
            del_org_group_repo(repo_id, org_id, group_id)
        else:
            seafile_api.unset_group_repo(repo_id, group_id, from_email)

    messages.success(request, _('Successfully removed share'))

    next = request.META.get('HTTP_REFERER', SITE_ROOT)
    return HttpResponseRedirect(next)

def repo_remove_share(request):
    """
    If repo is shared from one person to another person, only these two peson
    can remove share.
    If repo is shared from one person to a group, then only the one share the
    repo and group staff can remove share.
    """
    repo_id = request.GET.get('repo_id', '')
    group_id = request.GET.get('gid', '')
    from_email = request.GET.get('from', '')
    if not is_valid_username(from_email):
        return render_error(request, _(u'Argument is not valid'))

    # if request params don't have 'gid', then remove repos that share to
    # to other person; else, remove repos that share to groups
    if not group_id:
        to_email = request.GET.get('to', '')
        if not is_valid_username(to_email):
            return render_error(request, _(u'Argument is not valid'))

        if request.user.username != from_email and \
                request.user.username != to_email:
            return render_permission_error(request, _(u'Failed to remove share'))
        remove_share(repo_id, from_email, to_email)
    else:
        try:
            group_id_int = int(group_id)
        except:
            return render_error(request, _(u'group id is not valid'))

        if not check_group_staff(group_id_int, request.user.username) \
                and request.user.username != from_email:
            return render_permission_error(request, _(u'Failed to remove share'))

        if is_org_group(group_id_int):
            org_id = get_org_id_by_group(group_id_int)
            del_org_group_repo(repo_id, org_id, group_id_int)
        else:
            from seahub.group.views import group_unshare_repo
            group_unshare_repo(request, repo_id, group_id_int, from_email)

    messages.success(request, _('Successfully removed share'))

    next = request.META.get('HTTP_REFERER', None)
    if not next:
        next = SITE_ROOT

    return HttpResponseRedirect(next)

def check_and_get_org_by_group(group_id, user):
    """
    Check whether repo is org repo, get org info if it is, and set
    base template.
    """
    org_id = get_org_id_by_group(group_id)
    if org_id > 0:
        # this repo is org repo, get org info
        org = get_org_by_id(org_id)
        org._dict['is_staff'] = is_org_staff(org_id, user)
        org._dict['email'] = user
        base_template = 'org_base.html'
    else:
        org = None
        base_template = 'myhome_base.html'
    
    return org, base_template

def check_and_get_org_by_group(group_id, user):
    """
    Check whether repo is org repo, get org info if it is, and set
    base template.
    """
    org_id = seaserv.get_org_id_by_group(group_id)
    if org_id > 0:
        # this repo is org repo, get org info
        org = seaserv.get_org_by_id(org_id)
        org._dict["is_staff"] = seaserv.is_org_staff(org_id, user)
        org._dict["email"] = user
        base_template = "org_base.html"
    else:
        org = None
        base_template = "myhome_base.html"

    return org, base_template

    def delete(self, request, repo_id, format=None):

        if not seafile_api.get_repo(repo_id):
            return api_error(status.HTTP_400_BAD_REQUEST, 'Library does not exist')

        username = request.user.username
        share_type = request.GET.get('share_type', None)
        if share_type == 'personal':

            from_email = request.GET.get('from', None)
            if not is_valid_username(from_email):
                return api_error(status.HTTP_400_BAD_REQUEST, 'Invalid argument')

            if is_org_context(request):
                org_id = request.user.org.org_id
                seaserv.seafserv_threaded_rpc.org_remove_share(org_id,
                                                               repo_id,
                                                               from_email,
                                                               username)
            else:
                seaserv.remove_share(repo_id, from_email, username)

        elif share_type == 'group':

            from_email = request.GET.get('from', None)
            if not is_valid_username(from_email):
                return api_error(status.HTTP_400_BAD_REQUEST, 'Invalid argument')

            group_id = request.GET.get('group_id', None)
            group = seaserv.get_group(group_id)
            if not group:
                return api_error(status.HTTP_400_BAD_REQUEST, 'Group does not exist')

            if not seaserv.check_group_staff(group_id, username) and \
                not seafile_api.is_repo_owner(username, repo_id):
                return api_error(status.HTTP_403_FORBIDDEN, 'Permission denied')

            if seaserv.is_org_group(group_id):
                org_id = seaserv.get_org_id_by_group(group_id)
                seaserv.del_org_group_repo(repo_id, org_id, group_id)
            else:
                seafile_api.unset_group_repo(repo_id, group_id, from_email)

        elif share_type == 'public':

            if is_org_context(request):
                org_repo_owner = seafile_api.get_org_repo_owner(repo_id)
                is_org_repo_owner = True if org_repo_owner == username else False

                if not request.user.org.is_staff and not is_org_repo_owner:
                    return api_error(status.HTTP_403_FORBIDDEN, 'Permission denied')

                org_id = request.user.org.org_id
                seaserv.seafserv_threaded_rpc.unset_org_inner_pub_repo(org_id,
                                                                       repo_id)
            else:
                if not seafile_api.is_repo_owner(username, repo_id) and \
                    not request.user.is_staff:
                    return api_error(status.HTTP_403_FORBIDDEN, 'Permission denied')

                seaserv.unset_inner_pub_repo(repo_id)
        else:
            return api_error(status.HTTP_400_BAD_REQUEST, 'Invalid argument')

        return Response({'success': True}, status=status.HTTP_200_OK)

def ajax_repo_remove_share(request):
    """
    Remove repo shared to user/group/public
    """
    content_type = 'application/json; charset=utf-8'

    repo_id = request.POST.get('repo_id', None)
    share_type = request.POST.get('share_type', None)

    if not seafile_api.get_repo(repo_id):
        return HttpResponse(json.dumps({'error': _(u'Library does not exist')}), status=400,
                            content_type=content_type)

    username = request.user.username

    if share_type == 'personal':

        from_email = request.POST.get('from', None)
        if not is_valid_username(from_email):
            return HttpResponse(json.dumps({'error': _(u'Invalid argument')}), status=400,
                                content_type=content_type)

        if is_org_context(request):
            org_id = request.user.org.org_id
            org_remove_share(org_id, repo_id, from_email, username)
        else:
            seaserv.remove_share(repo_id, from_email, username)
        return HttpResponse(json.dumps({'success': True}), status=200,
                            content_type=content_type)

    elif share_type == 'group':

        from_email = request.POST.get('from', None)
        if not is_valid_username(from_email):
            return HttpResponse(json.dumps({'error': _(u'Invalid argument')}), status=400,
                                content_type=content_type)

        group_id = request.POST.get('group_id', None)
        group = seaserv.get_group(group_id)
        if not group:
            return HttpResponse(json.dumps({'error': _(u"Group does not exist")}), status=400,
                                content_type=content_type)

        if seaserv.check_group_staff(group_id, username) or \
            seafile_api.is_repo_owner(username, repo_id):
            if is_org_group(group_id):
                org_id = get_org_id_by_group(group_id)
                del_org_group_repo(repo_id, org_id, group_id)
            else:
                seafile_api.unset_group_repo(repo_id, group_id, from_email)
            return HttpResponse(json.dumps({'success': True}), status=200,
                                content_type=content_type)
        else:
            return HttpResponse(json.dumps({'error': _(u'Permission denied')}), status=400,
                                content_type=content_type)

    elif share_type == 'public':

        if is_org_context(request):

            org_repo_owner = seafile_api.get_org_repo_owner(repo_id)
            is_org_repo_owner = True if org_repo_owner == username else False
            if request.user.org.is_staff or is_org_repo_owner:
                org_id = request.user.org.org_id
                seaserv.seafserv_threaded_rpc.unset_org_inner_pub_repo(org_id,
                                                                       repo_id)
                return HttpResponse(json.dumps({'success': True}), status=200,
                                    content_type=content_type)
            else:
                return HttpResponse(json.dumps({'error': _(u'Permission denied')}), status=403,
                                    content_type=content_type)

        else:
            if seafile_api.is_repo_owner(username, repo_id) or \
                request.user.is_staff:
                unset_inner_pub_repo(repo_id)
                return HttpResponse(json.dumps({'success': True}), status=200,
                                    content_type=content_type)
            else:
                return HttpResponse(json.dumps({'error': _(u'Permission denied')}), status=403,
                                    content_type=content_type)
    else:
        return HttpResponse(json.dumps({'error': _(u'Invalid argument')}), status=400,
                            content_type=content_type)