name: CI

on:
  push:
    branches:
      - main
    tags:
      - v*
  pull_request:
    branches:
      - main

jobs:
  build-java:
    name: Build Java
    runs-on: ubuntu-latest
    steps:
      - name: Checkout Repository
        uses: actions/checkout@v5
        with:
          fetch-depth: 0

      - name: Setup Java
        uses: actions/setup-java@v5
        with:
          distribution: liberica
          java-version: |
            8
            17

      - name: Setup Gradle
        uses: gradle/actions/setup-gradle@v5

      - name: Build
        run: ./gradlew buildAll

      # This helps to upload only jar files into the build artifact
      - name: Copy Build Results to Temp
        run: |
          mkdir -p tmp/
          cp imgui-app/build/libs/*.jar tmp/
          cp imgui-binding/build/libs/*.jar tmp/
          cp imgui-lwjgl3/build/libs/*.jar tmp/

      - name: Upload Artifacts
        uses: actions/upload-artifact@v5
        with:
          name: java-libraries
          path: tmp/*.jar

  build-natives:
    name: Build Native (${{ matrix.target.os }} - ${{ matrix.target.type }})
    needs: build-java
    strategy:
      fail-fast: false
      matrix:
        target:
          - os: ubuntu-latest
            type: linux
          - os: ubuntu-latest
            type: windows
          - os: macos-latest
            type: macos
    runs-on: ${{ matrix.target.os }}
    steps:
      - name: Checkout Repository and Submodules
        uses: actions/checkout@v5
        with:
          fetch-depth: 0
          submodules: recursive

      - name: Setup Java
        uses: actions/setup-java@v5
        with:
          distribution: liberica
          java-version: |
            8
            17

      - name: Setup Gradle
        uses: gradle/actions/setup-gradle@v5

      - name: Install Dependencies (for Windows build)
        if: matrix.target.type == 'windows'
        run: sudo apt install mingw-w64

      - name: Build
        run: |
          chmod +x buildSrc/scripts/build.sh
          buildSrc/scripts/build.sh ${{ matrix.target.type }}

      - name: Upload Artifacts
        uses: actions/upload-artifact@v5
        with:
          name: native-library-${{ matrix.target.type }}
          path: /tmp/imgui/dst/

  # This required to pack all native libraries into single archive
  archive-natives:
    name: Archive Natives
    runs-on: ubuntu-latest
    needs: build-natives
    steps:
      - name: Merge Artifacts
        uses: actions/upload-artifact/merge@v5
        with:
          name: native-libraries
          pattern: native-library-*

  update-bin:
    name: Update Binaries
    if: github.ref == 'refs/heads/main' && !github.event.repository.fork # runs only on the main branch and not forks (sometimes people do PRs from the main branch)
    runs-on: ubuntu-latest
    needs: archive-natives
    steps:
      - name: Checkout Repository
        uses: actions/checkout@v5

      - name: Download Artifacts
        uses: actions/download-artifact@v6
        with:
          path: /tmp/artifacts

      # Job compares sha1 hash of the imgui-binding/src/main directory.
      # If there are any changes, then we update native libraries.
      # We do not rely on git in terms of comparing binaries,
      # since DLL files will always have versioning difference.
      - name: Compare Binding Hash
        id: cmp-binding-hash
        continue-on-error: true
        run: |
          touch bin/binding.sha1
          cat bin/binding.sha1 > /tmp/hash
          find imgui-binding/src/main -type f -print0 | sort -z | xargs -0 sha1sum > bin/binding.sha1
          find imgui-binding/src/generated -type f -print0 | sort -z | xargs -0 sha1sum >> bin/binding.sha1
          find include -type f -print0 | sort -z | xargs -0 sha1sum >> bin/binding.sha1
          cmp /tmp/hash bin/binding.sha1

      - name: Update
        if: steps.cmp-binding-hash.outcome != 'success'
        run: mv /tmp/artifacts/native-libraries/* bin/

      - name: Commit
        if: steps.cmp-binding-hash.outcome != 'success'
        uses: EndBug/add-and-commit@v9
        with:
          default_author: github_actions
          message: '[ci skip] update native binaries'

  release:
    name: Release
    if: startsWith(github.ref, 'refs/tags/v') # if tag starts with "v"
    runs-on: ubuntu-latest
    needs: [ build-java, archive-natives ]
    steps:
      - name: Checkout Repository
        uses: actions/checkout@v5
        with:
          fetch-depth: 0

      - name: Setup Java
        uses: actions/setup-java@v5
        with:
          distribution: liberica
          java-version: |
            8
            17

      - name: Setup Gradle
        uses: gradle/actions/setup-gradle@v5

      - name: Download Artifacts
        uses: actions/download-artifact@v6
        with:
          path: out/artifacts

      - name: Zip Artifacts
        run: |
          mkdir out/archives
          zip -rj out/archives/native-libraries out/artifacts/native-libraries
          zip -rj out/archives/java-libraries out/artifacts/java-libraries

      - name: Publish
        env:
          NEXUS_UPD_ID: ${{ secrets.RELEASE_NEXUS_UPD_ID }}
          NEXUS_UPD_PASS: ${{ secrets.RELEASE_NEXUS_UPD_PASS }}
          SIGNING_KEY_ID: ${{ secrets.RELEASE_SIGNING_KEY_ID }}
          SIGNING_KEY: ${{ secrets.RELEASE_SIGNING_KEY }}
          SIGNING_KEY_PASS: ${{ secrets.RELEASE_SIGNING_KEY_PASS }}
        run: |
          chmod +x ./buildSrc/scripts/publish.sh
          buildSrc/scripts/publish.sh

      - name: Release
        uses: softprops/action-gh-release@v2
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          draft: true
          prerelease: false
          files: |
            out/archives/**