name: Build CI

on:
  push:
    branches: 
      - main
  pull_request:
    branches:
      - main

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        
      - name: Set devkitPro environment variables
        run: |
          # Installing to home directory to avoid permission denied on caching
          echo "DEVKITPRO=/home/runner/devkitpro" >> $GITHUB_ENV
          echo "DEVKITARM=/home/runner/devkitpro/devkitARM" >> $GITHUB_ENV
          export PATH=$DEVKITARM/bin:$DEVKITPRO/tools/bin:$PATH
          
        # Caching to avoid excessive request to the devkitpro server from a runner because they 
        # eventually block and result in permission denied 403.
        # If that happens it takes like 2 hours until you can make requests again
      - name: Cache devkitPro toolchain
        id: cache-devkitpro
        uses: actions/cache@v4
        with:
          path: /home/runner/devkitpro
          # Using a manual key version suffix - v{num}, if changes are made that make the
          # cache stale and require a refresh, just  bump the version number so there's
          # a cache miss. The key needs to match in the "Save devkitPro to cache" stage
          # so you need to bump the number there too...
          key: devkitpro-${{ runner.os }}-v1

      - name: Set up devkitARM (if not cached)
        if: steps.cache-devkitpro.outputs.cache-hit != 'true'
        run: |
          sudo apt update
          wget https://apt.devkitpro.org/install-devkitpro-pacman
          chmod +x install-devkitpro-pacman
          sudo ./install-devkitpro-pacman
          mkdir -p "$DEVKITPRO"
          sudo dkp-pacman -Sy --noconfirm gba-dev
          # Copy from installed directory to cacheable directory
          sudo cp -r /opt/devkitpro "/home/runner"
          sudo chown -R $USER:$USER "/home/runner/devkitpro"
      - name: Save devkitPro to cache
        if: steps.cache-devkitpro.outputs.cache-hit != 'true'
        uses: actions/cache/save@v4
        with:
          path: /home/runner/devkitpro
          key: devkitpro-${{ runner.os }}-v1

      - name: Build the project
        run: |
          make