# Copyright 2017 The Bazel Authors. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import os
import unittest
from src.test.py.bazel import test_base


class BazelWindowsTest(test_base.TestBase):

  def createProjectFiles(self):
    self.ScratchFile('WORKSPACE')
    self.ScratchFile('foo/BUILD', ['cc_binary(name="x", srcs=["x.cc"])'])
    self.ScratchFile('foo/x.cc', [
        '#include <stdio.h>',
        'int main(int, char**) {'
        '  printf("hello\\n");',
        '  return 0;',
        '}',
    ])

  def testWindowsUnixRoot(self):
    self.createProjectFiles()

    exit_code, _, stderr = self.RunBazel([
        '--batch', '--host_jvm_args=-Dbazel.windows_unix_root=', 'build',
        '//foo:x', '--cpu=x64_windows_msys'
    ])
    self.AssertExitCode(exit_code, 37, stderr)
    self.assertIn('"bazel.windows_unix_root" JVM flag is not set',
                  '\n'.join(stderr))

    exit_code, _, stderr = self.RunBazel(
        ['--batch', 'build', '//foo:x', '--cpu=x64_windows_msys'])
    self.AssertExitCode(exit_code, 0, stderr)

  def testWindowsParameterFile(self):
    self.createProjectFiles()

    _, stdout, _ = self.RunBazel(['info', 'bazel-bin'])
    bazel_bin = stdout[0]

    exit_code, _, stderr = self.RunBazel([
        'build',
        '--materialize_param_files',
        '--features=compiler_param_file',
        '//foo:x',
    ])

    self.AssertExitCode(exit_code, 0, stderr)
    self.assertTrue(
        os.path.exists(os.path.join(bazel_bin, 'foo\\_objs\\x\\x.obj.params')))

  def testWindowsCompilesAssembly(self):
    self.ScratchFile('WORKSPACE')
    exit_code, stdout, stderr = self.RunBazel(['info', 'bazel-bin'])
    self.AssertExitCode(exit_code, 0, stderr)
    bazel_bin = stdout[0]
    self.ScratchFile('BUILD', [
        'cc_binary(',
        '    name="x",',
        '    srcs=['
        '        "inc.asm",',  # Test assemble action_config
        '        "dec.S",',    # Test preprocess-assemble action_config
        '        "y.cc",',
        '    ],',
        ')',
    ])
    self.ScratchFile('inc.asm', [
        '.code',
        'PUBLIC increment',
        'increment PROC x:WORD',
        '  xchg rcx,rax',
        '  inc rax',
        '  ret',
        'increment EndP',
        'END',
    ])
    self.ScratchFile('dec.S', [
        '.code',
        'PUBLIC decrement',
        'decrement PROC x:WORD',
        '  xchg rcx,rax',
        '  dec rax',
        '  ret',
        'decrement EndP',
        'END',
    ])
    self.ScratchFile('y.cc', [
        '#include <stdio.h>',
        'extern "C" int increment(int);',
        'extern "C" int decrement(int);',
        'int main(int, char**) {'
        '  int x = 5;',
        '  x = increment(x);',
        '  printf("%d\\n", x);',
        '  x = decrement(x);',
        '  printf("%d\\n", x);',
        '  return 0;',
        '}',
    ])

    exit_code, _, stderr = self.RunBazel([
        'build',
        '//:x',
    ])

    self.AssertExitCode(exit_code, 0, stderr)
    self.assertTrue(os.path.exists(os.path.join(bazel_bin, 'x.exe')))

  def testWindowsEnvironmentVariablesSetting(self):
    self.ScratchFile('BUILD')
    self.ScratchFile('WORKSPACE', [
        'load(":repo.bzl", "my_repo")',
        'my_repo(name = "env_test")',
    ])
    self.ScratchFile('repo.bzl', [
        'def my_repo_impl(repository_ctx):',
        '  repository_ctx.file("env.bat", "set FOO\\n")',
        '  env = {"foo" : "bar2", "Foo": "bar3",}',
        '  result = repository_ctx.execute(["./env.bat"], environment = env)',
        '  print(result.stdout)',
        '  repository_ctx.file("BUILD")',
        '',
        'my_repo = repository_rule(',
        '    implementation = my_repo_impl,',
        ')',
    ])

    exit_code, _, stderr = self.RunBazel(
        [
            'build',
            '@env_test//...',
        ],
        env_add={'FOO': 'bar1'},
    )
    self.AssertExitCode(exit_code, 0, stderr)
    result_in_lower_case = ''.join(stderr).lower()
    self.assertNotIn('foo=bar1', result_in_lower_case)
    self.assertNotIn('foo=bar2', result_in_lower_case)
    self.assertIn('foo=bar3', result_in_lower_case)

  def testAnalyzeCcRuleWithoutVCInstalled(self):
    self.ScratchFile('WORKSPACE')
    self.ScratchFile('BUILD', [
        'cc_binary(',
        '  name = "bin",',
        '  srcs = ["main.cc"],',
        ')',
    ])
    self.ScratchFile('main.cc', [
        'void main() {',
        '  printf("Hello world");',
        '}',
    ])
    exit_code, _, stderr = self.RunBazel(
        [
            'build',
            '--nobuild',
            '//...',
        ],
        # Set BAZEL_VC to a non-existing path,
        # Bazel should still work when analyzing cc rules .
        env_add={'BAZEL_VC': 'C:/not/exists/VC'},
    )
    self.AssertExitCode(exit_code, 0, stderr)

  def testBuildNonCcRuleWithoutVCInstalled(self):
    self.ScratchFile('WORKSPACE')
    self.ScratchFile('BUILD', [
        'genrule(',
        '  name="gen",',
        '  outs = ["hello"],',
        '  cmd = "touch $@",',
        ')',
        '',
        'java_binary(',
        '  name = "bin_java",',
        '  srcs = ["Main.java"],',
        '  main_class = "Main",',
        ')',
        '',
        'py_binary(',
        '  name = "bin_py",',
        '  srcs = ["bin_py.py"],',
        ')',
        '',
        'sh_binary(',
        '  name = "bin_sh",',
        '  srcs = ["main.sh"],',
        ')',
    ])
    self.ScratchFile('Main.java', [
        'public class Main {',
        '  public static void main(String[] args) {',
        '    System.out.println("hello java");',
        '  }',
        '}',
    ])
    self.ScratchFile('bin_py.py', [
        'print("Hello world")',
    ])
    self.ScratchFile('main.sh', [
        'echo "Hello world"',
    ])
    exit_code, _, stderr = self.RunBazel(
        [
            'build',
            '//...',
        ],
        # Set BAZEL_VC to a non-existing path,
        # Bazel should still work when building rules that doesn't
        # require cc toolchain.
        env_add={'BAZEL_VC': 'C:/not/exists/VC'},
    )
    self.AssertExitCode(exit_code, 0, stderr)


if __name__ == '__main__':
  unittest.main()