##
## Copyright (c) 2006 Jason Dillon
##
## Licensed under the Apache License, Version 2.0 (the "License");
## you may not use this file except in compliance with the License.
## You may obtain a copy of the License at
##
##     http://www.apache.org/licenses/LICENSE-2.0
##
## Unless required by applicable law or agreed to in writing, software
## distributed under the License is distributed on an "AS IS" BASIS,
## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
## See the License for the specific language governing permissions and
## limitations under the License.
##

##
## $Id: __init__.py 26 2006-04-15 06:25:53Z user57 $
##

import re, types

from p4spam import config, log

def getSubscription():
    return config.SUBSCRIPTIONS
    
def isEnabled():
    return getSubscription() != None

class SubscriptionManager:
    def __init__(this):
        this.log = log.getLogger(this)
    
    def apply(this, recipients, files):
        if not isEnabled():
            return recipients
        
        subs = getSubscription()
        for exp in subs.keys():
            this.log.debug("Checking view: %s" % exp)
            
            ##
            ## TODO: Cache compiled expressions
            ##
            
            rexp = re.compile(exp)
            
            for f in files:
                this.log.debug("Checking path: %s" % f.path)
                
                if rexp.search(f.path) != None:
                    addrs = subs[exp]
                    t = type(addrs)
                    
                    if t == types.StringType:
                        # Addrs here is really the string which is the single address
                        recipients.append(addrs)
                        this.log.debug("Adding subscription (from string): %s" % addrs)
                    
                    elif t in (types.TupleType, types.ListType):
                        for addr in addrs:
                            recipients.append(addr)
                            this.log.debug("Adding subscription (from list): %s" % addr)
                    
                    else:
                        raise "Unable to handle subscription data: %s" % str(addrs)
                    
                    break

__subscriptionManager = SubscriptionManager()

def applySubscriptions(recipients, files):
    __subscriptionManager.apply(recipients, files)