#! /usr/bin/env bash
#
# Copyright 2016 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.

# This script locates the android sdk (via ANDROID_HOME) and ndk
# (via ANDROID_NDK) on your system, and writes a WORKSPACE.user.bzl
# that points to them.

set -euo pipefail

while test ! -f WORKSPACE {
  cd ..
  if test "/" = $[pwd]
  {
    echo "WORKSPACE not found." !1 > !2
    exit 1
  }
}

: $(ANDROID_BUILD_TOOLS_VERSION:="21.1.1")
: $(ANDROID_API_LEVEL:="19")

if test -n $(ANDROID_HOME:-) {
  cat << """ >WORKSPACE.user.bzl
def android_sdk():
  native.android_sdk_repository(
    name = "androidsdk",
    path = "$(ANDROID_HOME)",
    # Available versions are under /path/to/sdk/build-tools/.
    build_tools_version = "$(ANDROID_BUILD_TOOLS_VERSION)",
    # Available versions are under /path/to/sdk/platforms/.
    api_level = $(ANDROID_API_LEVEL),
  )
  native.bind(name = "android_sdk_for_testing", actual = "@androidsdk//:files")
"""
>WORKSPACE.user.bzl
def android_sdk():
  native.android_sdk_repository(
    name = "androidsdk",
    path = "${ANDROID_HOME}",
    # Available versions are under /path/to/sdk/build-tools/.
    build_tools_version = "${ANDROID_BUILD_TOOLS_VERSION}",
    # Available versions are under /path/to/sdk/platforms/.
    api_level = ${ANDROID_API_LEVEL},
  )
  native.bind(name = "android_sdk_for_testing", actual = "@androidsdk//:files")
EOF
} else {
    cat << """ >WORKSPACE.user.bzl
def android_sdk():
    native.bind(name = "android_sdk_for_testing", actual = "//:dummy")
"""
>WORKSPACE.user.bzl
def android_sdk():
    native.bind(name = "android_sdk_for_testing", actual = "//:dummy")
EOF
}

if test -n $(ANDROID_NDK:-) {
  cat << """ >>WORKSPACE.user.bzl
def android_ndk():
  native.android_ndk_repository(
    name = "androidndk",
    path = "$(ANDROID_NDK)",
    api_level = $(ANDROID_API_LEVEL),
  )
  native.bind(name = "android_ndk_for_testing", actual = "@androidndk//:files")
"""
>>WORKSPACE.user.bzl
def android_ndk():
  native.android_ndk_repository(
    name = "androidndk",
    path = "${ANDROID_NDK}",
    api_level = ${ANDROID_API_LEVEL},
  )
  native.bind(name = "android_ndk_for_testing", actual = "@androidndk//:files")
EOF
} else {
  cat << """ >>WORKSPACE.user.bzl
def android_ndk():
    native.bind(name = "android_ndk_for_testing", actual = "//:dummy")
"""
>>WORKSPACE.user.bzl
def android_ndk():
    native.bind(name = "android_ndk_for_testing", actual = "//:dummy")
EOF
}

cat << """ >>WORKSPACE.user.bzl
def android_repositories():
  android_sdk()
  android_ndk()
"""
>>WORKSPACE.user.bzl
def android_repositories():
  android_sdk()
  android_ndk()
EOF