#!/bin/bash
# Copyright 2015 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.
#
# Generates an IntelliJ project in Bazel.

set -o errexit
cd $(dirname "$0")
cd ..

mkdir -p .idea/
cp -R scripts/resources/idea/*.* .idea/
source scripts/get_all_bazel_paths.sh

readonly compiler_file=.idea/compiler.xml
cat >$compiler_file <<'EOH'
<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
  <component name="CompilerConfiguration">
    <excludeFromCompile>
EOH
for android_file in $ANDROID_IMPORTING_FILES; do
  echo "      <file url=\"\$PROJECT_DIR\$/${android_file}\" />" >> $compiler_file
done
cat >>$compiler_file <<'EOF'
    </excludeFromCompile>
    <resourceExtensions />
    <wildcardResourcePatterns>
      <entry name="!?*.java" />
      <entry name="!?*.form" />
      <entry name="!?*.class" />
      <entry name="!?*.groovy" />
      <entry name="!?*.scala" />
      <entry name="!?*.flex" />
      <entry name="!?*.kt" />
      <entry name="!?*.clj" />
      <entry name="!?*.aj" />
    </wildcardResourcePatterns>
    <annotationProcessing>
      <profile default="true" name="Default" enabled="true">
        <processor name="com.google.auto.value.processor.AutoValueProcessor" />
        <processorPath useClasspath="true" />
      </profile>
    </annotationProcessing>
  </component>
</project>
EOF

readonly iml_file=bazel.iml
# Code generated by AutoValue is put in $MODULE_DIR/out/generated; adding it as a Source Root
# allows IntelliJ to find it while editing. (that is, generated classes won't be marked as unknown.)
cat > $iml_file <<EOH
<?xml version="1.0" encoding="UTF-8"?>
<module type="JAVA_MODULE" version="4">
  <component name="NewModuleRootManager">
    <output url="file://\$MODULE_DIR\$/out" />
    <content url="file://\$MODULE_DIR$/out/generated">
      <sourceFolder url="file://\$MODULE_DIR$/out/generated" isTestSource="false" generated="true" />
    </content>
    <content url="file://\$MODULE_DIR\$/src">
EOH

for source in ${JAVA_PATHS}; do
     if [[ $source == *"javatests" ]]; then
       is_test_source="true"
     elif [[ $source == *"test/java" ]]; then
       is_test_source="true"
     else
       is_test_source="false"
     fi
     echo '      <sourceFolder url="file://$MODULE_DIR$/'"${source}\" isTestSource=\"${is_test_source}\" />" >> $iml_file
done
cat >> $iml_file <<'EOF'
    </content>
    <content url="file://$MODULE_DIR$/third_party/java">
EOF

THIRD_PARTY_JAVA_PATHS="$(ls third_party/java | sort -u | sed -e 's%$%/java%')"

for third_party_java_path in ${THIRD_PARTY_JAVA_PATHS}; do
  echo '      <sourceFolder url="file://$MODULE_DIR$/third_party/java/'${third_party_java_path}'" isTestSource="false" />' >> $iml_file
done
cat >> $iml_file <<'EOF'
    </content>
    <orderEntry type="sourceFolder" forTests="false" />
EOF

# Write a module-library entry, usually a jar file but occasionally a directory.
function write_jar_entry() {
  local root_file=$1
  if [[ $# > 1 ]]; then
    local source_path=$2
  else
    local source_path=""
  fi
  local protocol="file"
  local file_end=""
  if [[ $root_file == *.jar ]]; then
    protocol="jar"
    file_end="!"
  fi
  local readonly basename=${root_file##*/}
    cat >> $iml_file <<EOF
      <orderEntry type="module-library">
        <library name="${basename}">
          <CLASSES>
            <root url="${protocol}://\$MODULE_DIR\$/${root_file}${file_end}/" />
          </CLASSES>
          <JAVADOC />
EOF
  if [[ -z "${source_path}" ]]; then
    echo "          <SOURCES />" >> $iml_file
  else
    cat >> $iml_file <<EOF
          <SOURCES>
            <root url="jar:/\$MODULE_DIR\$/${source_path}!/" />
          </SOURCES>
EOF
  fi
  if [[ $protocol == "file" ]]; then
    cat >> $iml_file <<EOF
          <jarDirectory url="file://\$MODULE_DIR\$/${root_file}" recursive="false" />
EOF
  fi
  cat >> $iml_file <<'EOF'
      </library>
    </orderEntry>
EOF
}

# Slight hack to make sure (1) our langtools is picked up before the SDK
# default, but that (2) SDK is picked up before auto-value, because that
# apparently causes problems for auto-value otherwise.
readonly javac_jar="third_party/java/jdk/langtools/javac.jar"
write_jar_entry "$javac_jar"

cat >> $iml_file <<'EOF'
    <orderEntry type="inheritedJdk" />
EOF

for jar in ${THIRD_PARTY_JAR_PATHS}; do
  if [[ jar != "$javac_jar" ]]; then
    write_jar_entry $jar
  fi
done

for path_pair in ${GENERATED_PATHS}; do
  write_jar_entry ${path_pair//:/ }
done

write_jar_entry "bazel-bin/src/main/protobuf"

cat >> $iml_file <<'EOF'
  </component>
</module>
EOF

echo
echo Done. Project file: $iml_file