#!/usr/bin/env python
#
# Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
# for details. All rights reserved. Use of this source code is governed by a
# BSD-style license that can be found in the LICENSE file.
#
# Script to push a package to pub.
#
# Usage: publish_pkg.py pkg_dir
#
# "pub" must be in PATH.


import os
import os.path
import re
import shutil
import sys
import subprocess
import tempfile

def ReplaceInFiles(paths, subs):
  '''Reads a series of files, applies a series of substitutions to each, and
     saves them back out. subs should be a list of (pattern, replace) tuples.'''
  for path in paths:
    contents = open(path).read()
    for pattern, replace in subs:
      contents = re.sub(pattern, replace, contents)

    dest = open(path, 'w')
    dest.write(contents)
    dest.close()

def ReadVersion(file, field):
  for line in open(file).read().split('\n'):
    [k, v] = re.split('\s+', line)
    if field == k:
      return int(v)

def Main(argv):
  HOME = os.path.dirname(os.path.dirname(os.path.realpath(__file__)))

  versionFile = os.path.join(HOME, 'tools', 'VERSION')
  major = ReadVersion(versionFile, 'MAJOR')
  minor = ReadVersion(versionFile, 'MINOR')
  build = ReadVersion(versionFile, 'BUILD')
  patch = ReadVersion(versionFile, 'PATCH')

  # bleeding_edge has a fixed version number of 0.1.x.y . Don't allow users
  # to publish packages from bleeding_edge.
  if major == 0 and minor <= 1:
    print 'Error: Do not run this script from a bleeding_edge checkout.'
    return -1

  if patch != 0:
    version = '%d.%d.%d+%d' % (major, minor, build, patch)
  else:
    version = '%d.%d.%d' % (major, minor, build)

  tmpDir = tempfile.mkdtemp()
  pkgName = os.path.basename(os.path.normpath(argv[1]))

  pubspec = os.path.join(tmpDir, pkgName, 'pubspec.yaml')

  replaceInDart = []
  replaceInPubspec = []

  if os.path.exists(os.path.join(HOME, argv[1], 'pubspec.yaml')):
    #
    # If pubspec.yaml exists, add the SDK's version number if
    # no version number is present.
    #
    shutil.copytree(os.path.join(HOME, argv[1]),
                    os.path.join(tmpDir, pkgName))
    with open(pubspec) as pubspecFile:
      lines = pubspecFile.readlines()
    with open(pubspec, 'w') as pubspecFile:
      foundVersion = False
      inDependencies = False
      for line in lines:
        if line.startswith('dependencies:'):
          inDependencies = True
        elif line[0].isalpha():
          inDependencies = False
        if line.startswith('version:'):
          foundVersion = True
        if inDependencies:
          #
          # Within dependencies, don't print line that start with "    sdk:"
          # and strip out "{ sdk: package_name }".
          #
          if not line.startswith('    sdk:'):
            line = re.sub(r'{(\s*)sdk:(\s+)([a-z0-9_]+)(\s*)}', '', line)
            pubspecFile.write(line)
        else:
          pubspecFile.write(line)
      if not foundVersion:
        pubspecFile.write('\nversion: ' + version + '\n')
      pubspecFile.write('environment:\n')
      pubspecFile.write('  sdk: ">=' + version + '"\n')

  else:
    #
    # If there's a lib/ directory in the package, copy the package.
    # Otherwise, move the package's contents to lib/.
    #
    if os.path.exists(os.path.join(HOME, argv[1], 'lib')):
      shutil.copytree(os.path.join(HOME, argv[1]),
                      os.path.join(tmpDir, pkgName))
    else:
      os.makedirs(os.path.join(tmpDir, pkgName))
      shutil.copytree(os.path.join(HOME, argv[1]),
                      os.path.join(tmpDir, pkgName, 'lib'))

    # Create pubspec.yaml .
    with open(pubspec, 'w') as pubspecFile:
      pubspecFile.write('name: ' + pkgName + '_unsupported\n')
      pubspecFile.write('author: None\n')
      pubspecFile.write('homepage: http://None\n')
      pubspecFile.write('version: ' + version + '\n')
      pubspecFile.write("description: >\n")
      pubspecFile.write('  A completely unsupported clone of Dart SDK library\n')
      pubspecFile.write('  ' + argv[1] + ' . This package will change in\n')
      pubspecFile.write('  unpredictable/incompatible ways without warning.\n')
      pubspecFile.write('dependencies:\n')
      pubspecFile.write('environment:\n')
      pubspecFile.write('  sdk: ">=' + version + '"\n')

    libpath = os.path.join(HOME, argv[1], '../libraries.dart')
    if os.path.exists(libpath):
      # Copy libraries.dart into the package source code
      shutil.copy(libpath, os.path.join(tmpDir, pkgName, 'lib/libraries.dart'))

      # Replace '../../libraries.dart' with '../libraries.dart'
      replaceInDart.append(
        (r'(import|part)(\s+)(\'|")\.\./(\.\./)*libraries.dart',
         r'\1\2\3\4libraries.dart'))

  if not os.path.exists(os.path.join(tmpDir, pkgName, 'LICENSE')):
    with open(os.path.join(tmpDir, pkgName, 'LICENSE'), 'w') as licenseFile:
      licenseFile.write(
'''Copyright 2012, the Dart project authors. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above
      copyright notice, this list of conditions and the following
      disclaimer in the documentation and/or other materials provided
      with the distribution.
    * Neither the name of Google Inc. nor the names of its
      contributors may be used to endorse or promote products derived
      from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
''');

  replaceInDart.append(
    (r'(import|part)(\s+)(\'|")(\.\./)+pkg/([^/]+/)lib/', r'\1\2\3package:\5'))

  # Replace '../*/pkg' imports and parts.
  for root, dirs, files in os.walk(os.path.join(tmpDir, pkgName)):
    # TODO(dgrove): Remove this when dartbug.com/7487 is fixed.
    if '.svn' in dirs:
      shutil.rmtree(os.path.join(root, '.svn'))
    for name in files:
      if name.endswith('.dart'):
        ReplaceInFiles([os.path.join(root, name)], replaceInDart)
      elif name == 'pubspec.yaml':
        ReplaceInFiles([os.path.join(root, name)], replaceInPubspec)

  print 'publishing version ' + version + ' of ' + argv[1] + ' to pub.\n'
  subprocess.call(['pub', 'publish'], cwd=os.path.join(tmpDir, pkgName))
  shutil.rmtree(tmpDir)

if __name__ == '__main__':
  sys.exit(Main(sys.argv))