"""distutils.command.upload

Implements the Distutils 'upload' subcommand (upload package to PyPI)."""

from distutils.errors import *
from distutils.core import PyPIRCCommand
from distutils.spawn import spawn
from distutils import log
import sys
import os, io
import socket
import platform
import configparser
import http.client as httpclient
from base64 import standard_b64encode
import urllib.parse

# this keeps compatibility for 2.3 and 2.4
if sys.version < "2.5":
    from md5 import md5
else:
    from hashlib import md5

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):
        # 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
        f = open(filename,'rb')
        try:
            content = f.read()
        finally:
            f.close()
        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
        user_pass = (self.username + ":" + self.password).encode('ascii')
        # The exact encoding of the authentication string is debated.
        # Anyway PyPI only accepts ascii for both username or password.
        auth = "Basic " + standard_b64encode(user_pass).decode('ascii')

        # Build up the MIME payload for the POST data
        boundary = '--------------GHSKFJDLGDS7543FJKLFHRE75642756743254'
        sep_boundary = b'\n--' + boundary.encode('ascii')
        end_boundary = sep_boundary + b'--'
        body = io.BytesIO()
        for key, value in data.items():
            title = '\nContent-Disposition: form-data; name="%s"' % key
            # handle multiple entries for the same name
            if type(value) != type([]):
                value = [value]
            for value in value:
                if type(value) is tuple:
                    title += '; filename="%s"' % value[0]
                    value = value[1]
                else:
                    value = str(value).encode('utf-8')
                body.write(sep_boundary)
                body.write(title.encode('utf-8'))
                body.write(b"\n\n")
                body.write(value)
                if value and value[-1:] == b'\r':
                    body.write(b'\n')  # write an extra newline (lurve Macs)
        body.write(end_boundary)
        body.write(b"\n")
        body = body.getvalue()

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

        # build the Request
        # We can't use urllib since we need to send the Basic
        # auth right with the first request
        # TODO(jhylton): Can we fix urllib?
        schema, netloc, url, params, query, fragments = \
            urllib.parse.urlparse(self.repository)
        assert not params and not query and not fragments
        if schema == 'http':
            http = httpclient.HTTPConnection(netloc)
        elif schema == 'https':
            http = httpclient.HTTPSConnection(netloc)
        else:
            raise AssertionError("unsupported schema "+schema)

        data = ''
        loglevel = log.INFO
        try:
            http.connect()
            http.putrequest("POST", url)
            http.putheader('Content-type',
                           'multipart/form-data; boundary=%s'%boundary)
            http.putheader('Content-length', str(len(body)))
            http.putheader('Authorization', auth)
            http.endheaders()
            http.send(body)
        except socket.error as e:
            self.announce(str(e), log.ERROR)
            return

        r = http.getresponse()
        if r.status == 200:
            self.announce('Server response (%s): %s' % (r.status, r.reason),
                          log.INFO)
        else:
            self.announce('Upload failed (%s): %s' % (r.status, r.reason),
                          log.ERROR)
        if self.show_response:
            msg = '\n'.join(('-' * 75, r.read(), '-' * 75))
            self.announce(msg, log.INFO)
