# Copyright (C) 2008 Novell Inc.  All rights reserved.
# This program is free software; it may be used, copied, modified
# and distributed under the terms of the GNU General Public Licence,
# either version 2, or (at your option) any later version.

import os.path
import sys
import signal
from osc import oscerr
from urllib2 import URLError, HTTPError
from oscsslexcp import NoSecureSSLError
from osc.util.cpio import CpioError
from osc.util.packagequery import PackageError

try:
    from M2Crypto.SSL.Checker import SSLVerificationError
    from M2Crypto.SSL import SSLError as SSLError
except:
    SSLError = None
    SSLVerificationError = None

try:
    # import as RPMError because the class "error" is too generic
    from rpm import error as RPMError
except:
    # if rpm-python isn't installed (we might be on a debian system):
    RPMError = None


# the good things are stolen from Matt Mackall's mercurial

def catchterm(*args):
    raise oscerr.SignalInterrupt

for name in 'SIGBREAK', 'SIGHUP', 'SIGTERM':
    num = getattr(signal, name, None)
    if num: signal.signal(num, catchterm)


def run(prg):

    try:

        try:
            if '--debugger' in sys.argv:
                import pdb
                pdb.set_trace()

            # here we actually run the program:
            return prg.main()

        except:
            # look for an option in the prg.options object and in the config dict
            # print stack trace, if desired
            if getattr(prg.options, 'traceback', None) or getattr(prg.conf, 'config', {}).get('traceback', None) or \
               getattr(prg.options, 'post_mortem', None) or getattr(prg.conf, 'config', {}).get('post_mortem', None):
                import traceback
                traceback.print_exc(file=sys.stderr)
                # we could use http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/52215

            # enter the debugger, if desired
            if getattr(prg.options, 'post_mortem', None) or getattr(prg.conf, 'config', {}).get('post_mortem', None):
                if sys.stdout.isatty() and not hasattr(sys, 'ps1'):
                    import pdb
                    pdb.post_mortem(sys.exc_info()[2])
                else:
                    print >>sys.stderr, 'sys.stdout is not a tty. Not jumping into pdb.'
            raise

    except oscerr.SignalInterrupt:
        print >>sys.stderr, 'killed!'
        return 1

    except KeyboardInterrupt:
        print >>sys.stderr, 'interrupted!'
        return 1

    except oscerr.UserAbort:
        print >>sys.stderr, 'aborted.'
        return 1

    except oscerr.APIError, e:
        print >>sys.stderr, 'BuildService API error:', e.msg
        return 1

    except oscerr.LinkExpandError, e:
        print >>sys.stderr, 'Link "%s/%s" cannot be expanded:\n' % (e.prj, e.pac), e.msg
        print >>sys.stderr, 'Use "osc repairlink" to fix merge conflicts.\n'
        return 1

    except oscerr.WorkingCopyWrongVersion, e:
        print >>sys.stderr, e

    except oscerr.NoWorkingCopy, e:
        print >>sys.stderr, e
        if os.path.isdir('.git'): print >>sys.stderr, "Current directory looks like git."
        if os.path.isdir('.hg'):  print >>sys.stderr, "Current directory looks like mercurial."
        if os.path.isdir('.svn'): print >>sys.stderr, "Current directory looks like svn."
        if os.path.isdir('CVS'):  print >>sys.stderr, "Current directory looks like cvs."
        return 1

    except HTTPError, e:
        print >>sys.stderr, 'Server returned an error:', e
        if hasattr(e, 'osc_msg'):
            print >>sys.stderr, e.osc_msg

        try:
            body = e.read()
        except AttributeError:
            body = ''

        if getattr(prg.options, 'debug', None) or \
           getattr(prg.conf, 'config', {}).get('debug', None):
            print >>sys.stderr, e.hdrs
            print >>sys.stderr, body

        if e.code in [ 400, 403, 404, 500 ]:
            if '<summary>' in body:
                msg = body.split('<summary>')[1]
                msg = msg.split('</summary>')[0]
                print >>sys.stderr, msg

        return 1

    except URLError, e:
        print >>sys.stderr, 'Failed to reach a server:\n', e.reason
        return 1

    except (oscerr.ConfigError, oscerr.NoConfigfile), e:
        print >>sys.stderr, e.msg
        return 1

    except oscerr.OscIOError, e:
        print >>sys.stderr, e.msg
        if getattr(prg.options, 'debug', None) or \
           getattr(prg.conf, 'config', {}).get('debug', None):
            print >>sys.stderr, e.e
        return 1

    except (oscerr.WrongOptions, oscerr.WrongArgs), e:
        print >>sys.stderr, e
        return 2

    except oscerr.ExtRuntimeError, e:
        print >>sys.stderr, e.msg
        return 1

    except oscerr.WorkingCopyOutdated, e:
        print >>sys.stderr, e
        return 1

    except (oscerr.PackageExists, oscerr.PackageMissing, oscerr.WorkingCopyInconsistent), e:
        print >>sys.stderr, e.msg
        return 1

    except oscerr.PackageInternalError, e:
        import traceback
        print >>sys.stderr, 'a package internal error occured\n' \
            'please file a bug and attach your current package working copy ' \
            'and the following traceback to it:'
        print >>sys.stderr, e.msg
        traceback.print_exc(file=sys.stderr)

    except oscerr.PackageError, e:
        print >>sys.stderr, e.msg
        return 1

    except PackageError, e:
        print >>sys.stderr, '%s:' % e.fname, e.msg
        return 1

    except RPMError, e:
        print >>sys.stderr, e
        return 1

    except SSLError, e:
        print >>sys.stderr, "SSL Error:", e
        return 1

    except SSLVerificationError, e:
        print >>sys.stderr, "Certificate Verification Error:", e
        return 1

    except NoSecureSSLError, e:
        print >>sys.stderr, e
        return 1

    except CpioError, e:
        print >>sys.stderr, e
        return 1

# vim: sw=4 et