# 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.

"""Rules to install NodeJS dependencies during WORKSPACE evaluation."""

def _npm_install_impl(repository_ctx):

"""Core implementation of npm_install."""

repository_ctx.file("BUILD", """

package(default_visibility = ["//visibility:public"])

filegroup(

name = "node_modules",

srcs = glob(["node_modules/**/*"],

# Exclude directories that commonly contain filenames which are

# illegal bazel labels

exclude = ["node_modules/*/test/**"]))

""")

# Put our package descriptor in the right place.

repository_ctx.symlink(

repository_ctx.attr.package_json,

repository_ctx.path("package.json"))

# TODO(https://github.com/bazelbuild/rules_nodejs/issues/77) this should run

# node, not npm directly, as the latter will use #!/usr/bin/node

if repository_ctx.os.name.lower().find("windows") != -1:

npm = Label("@nodejs//:npm.cmd")

else:

npm = Label("@nodejs//:bin/npm")

# To see the output, pass: quiet=False

result = repository_ctx.execute(

[repository_ctx.path(npm), "install", repository_ctx.path("")])

if result.return_code:

fail("npm_install failed: %s (%s)" % (result.stdout, result.stderr))

npm_install = repository_rule(

attrs = {

"package_json": attr.label(

allow_files = True,

mandatory = True,

single_file = True,

),

},

implementation = _npm_install_impl,

)