# Builds every backend and publishes them as a GitHub Release.
#   push a tag "v*"           -> release named after the tag
#   push to master            -> rolling "latest" pre-release (replaced each time)
#   run manually (Actions tab) -> same as master
name: Build & Release

on:
  push:
    branches: [master]
    tags: ["v*"]
  workflow_dispatch:

permissions:
  contents: write

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-python@v5
        with:
          python-version: "3.x"

      - name: Install Luau and LuaJIT (for checks)
        run: |
          sudo apt-get update -qq && sudo apt-get install -y -qq luajit
          curl -fsSL -o luau.zip https://github.com/luau-lang/luau/releases/latest/download/luau-ubuntu.zip
          unzip -q luau.zip -d luau && chmod +x luau/* && echo "$PWD/luau" >> "$GITHUB_PATH"

      - name: Build
        run: |
          mkdir -p dist
          python3 tools/bundle.py dist/roblox                       # ImGui.luau (library + demo)
          python3 tools/bundle.py --no-demo dist/roblox-nodemo        # ImGui.luau (library only)
          python3 tools/bundle.py --target love dist/love             # imgui_love.lua (library + demo)
          python3 tools/bundle.py --target love --no-demo dist/love-nodemo

      - name: Check
        run: |
          luau-compile --null dist/roblox/ImGui.luau
          luau-compile --null dist/roblox-nodemo/ImGui.luau
          luajit -bl dist/love/imgui_love.lua > /dev/null
          luajit -bl dist/love-nodemo/imgui_love.lua > /dev/null
          python3 tools/test/run.py --main tools/test/scripts/t_readme.luau --frames 30 --quiet --roblox --timeout 300 | tee /tmp/r.txt
          grep -q "README OK" /tmp/r.txt
          python3 tools/bundle.py --target love >/dev/null
          luajit tools/test/love/t_drawhash.lua 60 Widgets,Basic
          luajit tools/test/love/t_examples.lua

      - name: Package
        run: |
          V="${GITHUB_REF_NAME}"
          cd dist
          cp roblox/ImGui.luau ImGui.luau
          cp roblox-nodemo/ImGui.luau ImGui-nodemo.luau
          cp love/imgui_love.lua imgui_love.lua
          cp love-nodemo/imgui_love.lua imgui_love-nodemo.lua
          # Roblox: module + example LocalScript + Rojo project
          mkdir -p pkg-roblox/build && cp ImGui.luau pkg-roblox/build/ && cp ../default.project.json pkg-roblox/
          mkdir -p pkg-roblox/examples && cp -r ../examples/example_roblox ../examples/example_shared pkg-roblox/examples/
          (cd pkg-roblox && zip -qr ../imgui-luau-roblox-$V.zip .)
          # LÖVE: bundle + fonts + examples (run: love examples/example_love)
          mkdir -p pkg-love/build && cp imgui_love.lua pkg-love/build/ && cp -r ../fonts pkg-love/ && rm -f pkg-love/fonts/*.lua
          mkdir -p pkg-love/examples && cp -r ../examples/example_love ../examples/example_shared pkg-love/examples/
          (cd pkg-love && zip -qr ../imgui-luau-love-$V.zip .)
          ls -la

      - name: Release (tag)
        if: startsWith(github.ref, 'refs/tags/v')
        uses: softprops/action-gh-release@v2
        with:
          files: |
            dist/ImGui.luau
            dist/ImGui-nodemo.luau
            dist/imgui_love.lua
            dist/imgui_love-nodemo.lua
            dist/*.zip
          generate_release_notes: true

      - name: Release (latest)
        if: "!startsWith(github.ref, 'refs/tags/v')"
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          gh release delete latest --yes --cleanup-tag || true
          gh release create latest --prerelease --title "Latest build (${GITHUB_SHA::7})" \
            --notes "Automatic build of ${GITHUB_SHA} on ${GITHUB_REF_NAME}. Tag a commit v* for a stable release." \
            dist/ImGui.luau dist/ImGui-nodemo.luau dist/imgui_love.lua dist/imgui_love-nodemo.lua dist/*.zip