action.yml

# Contains common operations to set up a hermetic Android + Bazel build environment for Oppia
# Android CI workflows. Action prerequisites:
# - JDK 11 must be installed & set as the default version via JAVA_HOME
# - Bazel must be installed, in the path, and be version 6.5.0

# TODO(#1861): Revert SDK pinning for improved CI performance once Bazel is sufficiently stable that
# we can rely on the automatic SDK provided by GitHub's CI environment.

name: Build environment setup
description: Sets up the Android & Bazel build environments for Oppia Android
runs:
  using: composite
  steps:
    - name: Check Java version & path
      run: |
        which java
        java -version
        echo "Java home: $JAVA_HOME"
        $JAVA_HOME/bin/java -version

        # Verify that the correct version of Java is installed.
        java -version 2>&1 | grep -q -E "11.0"
        HAS_CORRECT_JAVA_VERSION=$(echo $?)
        if [[ "$HAS_CORRECT_JAVA_VERSION" == 1 ]] ; then
          echo "Expected Java 11 to be installed"
          exit 1
        fi
      shell: bash

    - name: Verify Bazel version
      run: |
        bazel --version | grep -q 6.5.0
        HAS_CORRECT_BAZEL_VERSION=$(echo $?)
        if [[ "$HAS_CORRECT_JAVA_VERSION" == 1 ]] ; then
          echo "Expected Bazel 6.5.0 to be installed"
          exit 1
        fi
      shell: bash

    - name: Set up new Android SDK directory
      run: |
        mkdir -p $HOME/android-sdk
      shell: bash

    - name: Download cmdline tools
      run: |
        wget https://dl.google.com/android/repository/commandlinetools-linux-7302050_latest.zip
        cp ./commandlinetools-linux-7302050_latest.zip $HOME/android-sdk
        cd $HOME/android-sdk
        unzip commandlinetools-linux-7302050_latest.zip
        mkdir tools
        cd cmdline-tools/
        mv -i * ../tools && mv ../tools .
        cd ..
        echo "ANDROID_HOME=$HOME/android-sdk" >> $GITHUB_ENV
      shell: bash

    - name: Verify updated ANDROID_HOME
      run: |
        echo "Using updated Android SDK home: $ANDROID_HOME"
      shell: bash

    - name: Accept SDK licenses
      run: |
        # For some reason, sdkmanager returns an error code when licenses are accepted. Run in a
        # sub-shell so that the CI workflow doesn't fail.
        echo $(yes | $ANDROID_HOME/cmdline-tools/tools/bin/sdkmanager --licenses)
      shell: bash

    - name: Install platform tools
      run: |
        $ANDROID_HOME/cmdline-tools/tools/bin/sdkmanager --install "platform-tools"
      shell: bash

    - name: Install SDK 33
      run: |
        $ANDROID_HOME/cmdline-tools/tools/bin/sdkmanager --install "platforms;android-33"
      shell: bash

    - name: Install build tools 32.0.0
      run: |
        $ANDROID_HOME/cmdline-tools/tools/bin/sdkmanager --install "build-tools;32.0.0"
      shell: bash

    - name: Configure Bazel to use specific sandbox tmpfs
      run: |
        echo "build --enable_platform_specific_config" >> $HOME/.bazelrc
        echo "build:linux --sandbox_tmpfs_path=/tmp" >> $HOME/.bazelrc
      shell: bash