name: Build
on:
  workflow_call:
    inputs:
      relative-build-root:
        required: true
        type: string
    outputs:
      cache-key:
        description: 'Computed cache key, used for restoring cache in other workflows'
        value: ${{ jobs.build.outputs.cache-key }}

env:
  BUILD_ROOT: ${{ github.workspace }}/${{ inputs.relative-build-root }}

jobs:
  build:
    name: Build dependencies
    runs-on: ubuntu-22.04

    outputs:
      cache-key: ${{ steps.cache-key.outputs.cache-key }}

    steps:
    - name: Checkout Kong source code
      uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2

    - name: Generate cache key
      id: cache-key
      uses: ./.github/actions/build-cache-key

    - name: Lookup build cache
      id: cache-deps
      uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
      with:
        path: ${{ env.BUILD_ROOT }}
        key: ${{ steps.cache-key.outputs.cache-key }}

    - name: Install packages
      if: steps.cache-deps.outputs.cache-hit != 'true'
      run: sudo apt update && sudo apt install libyaml-dev valgrind libprotobuf-dev

    - name: Build Kong
      if: steps.cache-deps.outputs.cache-hit != 'true'
      env:
        GH_TOKEN: ${{ github.token }}
      run: |
        make build-kong
        chmod +rw -R "$BUILD_ROOT/kong-dev"

    - name: Update PATH
      run: |
        echo "$BUILD_ROOT/kong-dev/bin" >> $GITHUB_PATH
        echo "$BUILD_ROOT/kong-dev/openresty/nginx/sbin" >> $GITHUB_PATH
        echo "$BUILD_ROOT/kong-dev/openresty/bin" >> $GITHUB_PATH

    - name: Debug (nginx)
      run: |
        echo nginx: $(which nginx)
        nginx -V 2>&1 | sed -re 's/ --/\n--/g'
        ldd $(which nginx)

    - name: Debug (luarocks)
      run: |
        echo luarocks: $(which luarocks)
        luarocks --version
        luarocks config

    - name: Bazel Outputs
      uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
      if: failure()
      with:
        name: bazel-outputs
        path: |
          bazel-out/_tmp/actions
        retention-days: 3

    - name: Build Dev Kong dependencies
      if: steps.cache-deps.outputs.cache-hit != 'true'
      run: |
        make install-dev-rocks