#!/usr/bin/python
import apt
import apt_pkg
import os


def get_file(fetcher, uri, destfile):
    # get the file
    af = apt_pkg.AcquireFile(fetcher, uri=uri, descr="sample descr",
                               destfile=destfile)
    res = fetcher.Run()
    if res != fetcher.ResultContinue:
        return False
    return True

apt_pkg.init()

#apt_pkg.Config.Set("Debug::pkgDPkgPM","1");
#apt_pkg.Config.Set("Debug::pkgPackageManager","1");
#apt_pkg.Config.Set("Debug::pkgDPkgProgressReporting","1");

cache = apt_pkg.Cache()
depcache = apt_pkg.DepCache(cache)

recs = apt_pkg.PackageRecords(cache)
list = apt_pkg.SourceList()
list.ReadMainList()

# show the amount fetch needed for a dist-upgrade
depcache.Upgrade(True)
progress = apt.progress.TextFetchProgress()
fetcher = apt_pkg.Acquire(progress)
pm = apt_pkg.PackageManager(depcache)
pm.GetArchives(fetcher, list, recs)
print "%s (%s)" % (apt_pkg.SizeToStr(fetcher.FetchNeeded), fetcher.FetchNeeded)
actiongroup = apt_pkg.ActionGroup(depcache)
for pkg in cache.Packages:
    depcache.MarkKeep(pkg)

try:
    os.mkdir("/tmp/pyapt-test")
    os.mkdir("/tmp/pyapt-test/partial")
except OSError:
    pass
apt_pkg.Config.Set("Dir::Cache::archives", "/tmp/pyapt-test")

pkg = cache["3ddesktop"]
depcache.MarkInstall(pkg)

progress = apt.progress.TextFetchProgress()
fetcher = apt_pkg.Acquire(progress)
#fetcher = apt_pkg.Acquire()
pm = apt_pkg.PackageManager(depcache)

print pm
print fetcher

get_file(fetcher, "ftp://ftp.debian.org/debian/dists/README", "/tmp/lala")

pm.GetArchives(fetcher, list, recs)

for item in fetcher.Items:
    print item
    if item.Status == item.StatError:
        print "Some error ocured: '%s'" % item.ErrorText
    if item.Complete == False:
        print "No error, still nothing downloaded (%s)" % item.ErrorText
    print


res = fetcher.Run()
print "fetcher.Run() returned: %s" % res

print "now runing pm.DoInstall()"
res = pm.DoInstall(1)
print "pm.DoInstall() returned: %s"% res