"""distutils.command.upload

Implements the Distutils 'upload' subcommand (upload package to PyPI)."""
import sys
import os
import socket
import platform
from urllib2 import urlopen, Request, HTTPError
import base64
import urlparse
import cStringIO as StringIO
from ConfigParser import ConfigParser
from hashlib import md5

from distutils.errors import *
from distutils.core import PyPIRCCommand
from distutils.spawn import spawn
from distutils import log

class upload(PyPIRCCommand):

    description = "upload binary package to PyPI"

    user_options = PyPIRCCommand.user_options + [
        ('sign', 's',
         'sign files to upload using gpg'),
        ('identity=', 'i', 'GPG identity used to sign files'),
        ]

    boolean_options = PyPIRCCommand.boolean_options + ['sign']

    def initialize_options(self):
        PyPIRCCommand.initialize_options(self)
        self.username = ''
        self.password = ''
        self.show_response = 0
        self.sign = False
        self.identity = None

    def finalize_options(self):
        PyPIRCCommand.finalize_options(self)
        if self.identity and not self.sign:
            raise DistutilsOptionError(
                "Must use --sign for --identity to have meaning"
            )
        config = self._read_pypirc()
        if config != {}:
            self.username = config['username']
            self.password = config['password']
            self.repository = config['repository']
            self.realm = config['realm']

        # getting the password from the distribution
        # if previously set by the register command
        if not self.password and self.distribution.password:
            self.password = self.distribution.password

    def run(self):
        if not self.distribution.dist_files:
            raise DistutilsOptionError("No dist file created in earlier command")
        for command, pyversion, filename in self.distribution.dist_files:
            self.upload_file(command, pyversion, filename)

    def upload_file(self, command, pyversion, filename):
        # Makes sure the repository URL is compliant
        schema, netloc, url, params, query, fragments = \
            urlparse.urlparse(self.repository)
        if params or query or fragments:
            raise AssertionError("Incompatible url %s" % self.repository)

        if schema not in ('http', 'https'):
            raise AssertionError("unsupported schema " + schema)

        # Sign if requested
        if self.sign:
            gpg_args = ["gpg", "--detach-sign", "-a", filename]
            if self.identity:
                gpg_args[2:2] = ["--local-user", self.identity]
            spawn(gpg_args,
                  dry_run=self.dry_run)

        # Fill in the data - send all the meta-data in case we need to
        # register a new release
        content = open(filename,'rb').read()
        meta = self.distribution.metadata
        data = {
            # action
            ':action': 'file_upload',
            'protcol_version': '1',

            # identify release
            'name': meta.get_name(),
            'version': meta.get_version(),

            # file content
            'content': (os.path.basename(filename),content),
            'filetype': command,
            'pyversion': pyversion,
            'md5_digest': md5(content).hexdigest(),

            # additional meta-data
            'metadata_version' : '1.0',
            'summary': meta.get_description(),
            'home_page': meta.get_url(),
            'author': meta.get_contact(),
            'author_email': meta.get_contact_email(),
            'license': meta.get_licence(),
            'description': meta.get_long_description(),
            'keywords': meta.get_keywords(),
            'platform': meta.get_platforms(),
            'classifiers': meta.get_classifiers(),
            'download_url': meta.get_download_url(),
            # PEP 314
            'provides': meta.get_provides(),
            'requires': meta.get_requires(),
            'obsoletes': meta.get_obsoletes(),
            }
        comment = ''
        if command == 'bdist_rpm':
            dist, version, id = platform.dist()
            if dist:
                comment = 'built for %s %s' % (dist, version)
        elif command == 'bdist_dumb':
            comment = 'built for %s' % platform.platform(terse=1)
        data['comment'] = comment

        if self.sign:
            data['gpg_signature'] = (os.path.basename(filename) + ".asc",
                                     open(filename+".asc").read())

        # set up the authentication
        auth = "Basic " + base64.encodestring(self.username + ":" +
                                              self.password).strip()

        # Build up the MIME payload for the POST data
        boundary = '--------------GHSKFJDLGDS7543FJKLFHRE75642756743254'
        sep_boundary = '\n--' + boundary
        end_boundary = sep_boundary + '--'
        body = StringIO.StringIO()
        for key, value in data.items():
            # handle multiple entries for the same name
            if not isinstance(value, list):
                value = [value]
            for value in value:
                if isinstance(value, tuple):
                    fn = ';filename="%s"' % value[0]
                    value = value[1]
                else:
                    fn = ""
                value = str(value)
                body.write(sep_boundary)
                body.write('\nContent-Disposition: form-data; name="%s"'%key)
                body.write(fn)
                body.write("\n\n")
                body.write(value)
                if value and value[-1] == '\r':
                    body.write('\n')  # write an extra newline (lurve Macs)
        body.write(end_boundary)
        body.write("\n")
        body = body.getvalue()

        self.announce("Submitting %s to %s" % (filename, self.repository), log.INFO)

        # build the Request
        headers = {'Content-type':
                        'multipart/form-data; boundary=%s' % boundary,
                   'Content-length': str(len(body)),
                   'Authorization': auth}

        request = Request(self.repository, data=body,
                          headers=headers)
        # send the data
        try:
            result = urlopen(request)
            status = result.getcode()
            reason = result.msg
        except socket.error, e:
            self.announce(str(e), log.ERROR)
            return
        except HTTPError, e:
            status = e.code
            reason = e.msg

        if status == 200:
            self.announce('Server response (%s): %s' % (status, reason),
                          log.INFO)
        else:
            self.announce('Upload failed (%s): %s' % (status, reason),
                          log.ERROR)
        if self.show_response:
            self.announce('-'*75, result.read(), '-'*75)