name: Build Toolchains

on:
  pull_request:
    paths:
      - '.github/workflows/build.yml'
      - '.github/workflows/toolchain.yml'
      - 'toolchain/**'
  push:
    paths:
      - '.github/workflows/build.yml'
      - '.github/workflows/toolchain.yml'
      - 'toolchain/**'
    branches-ignore:
      - master

permissions:
  contents: read

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: ${{ github.event_name == 'pull_request' }}

jobs:
  determine_targets:
    name: Set targets
    runs-on: ubuntu-latest
    outputs:
      target: ${{ steps.find_targets.outputs.target }}

    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: Set targets
        id: find_targets
        run: |
          export TARGETS="$(perl ./scripts/dump-target-info.pl targets 2>/dev/null \
            | sort -u -t '/' -k1,1 \
            | awk '{ print $1 }')"

          JSON='['
          FIRST=1
          for TARGET in $TARGETS; do
            TUPLE='{"target":"'"$(echo $TARGET | cut -d "/" -f 1)"'","subtarget":"'"$(echo $TARGET | cut -d "/" -f 2)"'"}'
            [[ $FIRST -ne 1 ]] && JSON="$JSON"','
            JSON="$JSON""$TUPLE"
            FIRST=0
          done
          JSON="$JSON"']'

           echo -e "\n---- targets ----\n"
           echo "$JSON"
           echo -e "\n---- targets ----\n"

           echo "target=$JSON" >> $GITHUB_OUTPUT

  build:
    name: Build Target Toolchain
    needs: determine_targets
    permissions:
      contents: read
      packages: read
      actions: write
    strategy:
       fail-fast: False
       matrix:
         include: ${{fromJson(needs.determine_targets.outputs.target)}}
    uses: ./.github/workflows/build.yml
    with:
      target: ${{ matrix.target }}
      subtarget: ${{ matrix.subtarget }}
      build_toolchain: true