#!/usr/bin/python -tt

import sys
import os
from repomd import packageSack
from repomd import packageObject
from repomd import repoMDObject
from repomd import mdUtils
from repomd import mdErrors

def getSack(basepath,repoid):
    pkgSack = packageSack.XMLPackageSack(packageObject.RpmXMLPackageObject)
    repomdxmlfile = os.path.join(basepath, 'repodata/repomd.xml')

    try:
        repodata = repoMDObject.RepoMD(repoid, repomdxmlfile)
    except mdErrors.RepoMDError, e:
        print >> sys.stderr, e
        sys.exit(1)
    
    (pbase, phref) = repodata.primaryLocation()
    
    processlist = [phref]
    for file in processlist:
        complete = basepath + '/' + file
        try:
            pkgSack.addFile(repoid, complete, None)
        except mdErrors.PackageSackError, e:
            print >> sys.stderr, e
            sys.exit(1)
            
    return pkgSack 

if __name__ == "__main__":
    if len(sys.argv) < 3:
        print '%s: /path/to/repo /other/repo' % sys.argv[0]
        sys.exit(1)
        
    sack1 = getSack(sys.argv[1], 'repo1')
    sack2 = getSack(sys.argv[2], 'repo2')

    pkgs1 = {}
    pkgs2 = {}
    for pkg in sack1.returnPackages():
        if pkg.returnSimple('arch') == "src": continue
        pkgs1[pkg.returnSimple('name')] = pkg
    for pkg in sack2.returnPackages():
        if pkg.returnSimple('arch') == "src": continue
        pkgs2[pkg.returnSimple('name')] = pkg

    newpkgs = []
    delpkgs = []

    for pkg in pkgs1.keys():
        if not pkgs2.has_key(pkg):
            delpkgs.append(pkgs1[pkg])
    for pkg in pkgs2.keys():
        if not pkgs1.has_key(pkg):
            newpkgs.append(pkgs2[pkg])

    newpkgs.sort()
    print "\nNew packages:"
    for p in newpkgs:
        print p
             
    delpkgs.sort()
    print "\nRemoved packages:"
    for p in delpkgs:
        print p