name: Increment Build

on:
  pull_request:
    branches: [nightly]
    types: [closed]

jobs:
  increment-build:
    runs-on: ubuntu-latest
    if: github.base_ref == 'nightly' && github.event.pull_request.merged
    outputs:
      version: ${{ steps.update-version.outputs.version }}
      build-value: ${{ steps.update-version.outputs.build-value }}
      commit-msg: ${{ steps.update-version.outputs.commit-msg }}
      commit-hash: ${{ steps.update-version.outputs.commit-hash }}
      commit-short: ${{ steps.update-version.outputs.commit-short }}
    steps:

      - name: Create App Token
        uses: actions/create-github-app-token@v1
        id: app-token
        with:
          app-id: ${{ vars.APP_ID }}
          private-key: ${{ secrets.APP_TOKEN }}

      - name: Check Out Repo
        uses: actions/checkout@v4
        with:
          token: ${{ steps.app-token.outputs.token }}
          ref: nightly
          fetch-depth: 0

      - name: Update VERSION File
        id: update-version
        run: |
            value=$(cat VERSION)
            old_msg=$(git log -1 HEAD --pretty=format:%s)
            version="${value%-build*}"
          
            if [[ "$value" == *"-"* ]]; then
                build_value="$((${value#*-build} + 1))"
            else
                build_value="1"
            fi
          
            new_value="${version}-build${build_value}"
            new_msg="[${build_value}] ${old_msg}"
          
            echo "version=${version}" >> $GITHUB_OUTPUT
            echo "build-value=${build_value}" >> $GITHUB_OUTPUT
            echo "commit-msg=${old_msg}" >> $GITHUB_OUTPUT
            echo "commit-hash=$(git rev-parse HEAD)" >> $GITHUB_OUTPUT
            echo "commit-short=$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT
          
            echo "$new_value" > "VERSION"
            git config --local user.email "action@github.com"
            git config --local user.name "GitHub Action"
            git add VERSION
            git commit -m "${new_msg}" --amend
            git push origin nightly --force-with-lease

  verify-changes:
    runs-on: ubuntu-latest
    needs: [ increment-build ]
    outputs:
      build: ${{ steps.list-changes.outputs.build }}
    steps:

      - name: Check Out Repo
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
          ref: nightly

      - name: Get changes
        id: get-changes
        run: echo "files=$(git diff --name-only HEAD^ | xargs)" >> $GITHUB_OUTPUT

      - name: List changed files
        id: list-changes
        run: |
            for file in ${{ steps.get-changes.outputs.files }}; do
                if [[ $file =~ ^(defaults|fonts|modules|kometa.py|requirements.txt|.dockerignore|Dockerfile).*$ ]] ; then
                    echo "$file will trigger docker build"
                    echo "build=true" >> $GITHUB_OUTPUT
                else
                    echo "$file will not trigger docker build"
                fi
            done

  docker-build-nightly:
    runs-on: ubuntu-latest
    needs: [ increment-build, verify-changes ]
    if: needs.verify-changes.outputs.build == 'true'
    steps:

      - name: Check Out Repo
        uses: actions/checkout@v4
        with:
          ref: nightly

      - name: Login to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKER_HUB_USERNAME }}
          password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}

      - name: Set up QEMU
        uses: docker/setup-qemu-action@master
        with:
          platforms: all

      - name: Set up Docker Buildx
        id: buildx
        uses: docker/setup-buildx-action@v3

      - name: Build and Push
        id: docker_build
        uses: docker/build-push-action@v5
        with:
          context: ./
          file: ./Dockerfile
          build-args: |
            "BRANCH_NAME=nightly"
          platforms: linux/amd64,linux/arm64
          push: true
          tags: kometateam/kometa:nightly
          cache-from: type=gha
          cache-to: type=gha,mode=max

      - name: Discord Success Notification
        uses: Kometa-Team/discord-notifications@master
        if: success()
        with:
          webhook_id_token: ${{ secrets.BUILD_WEBHOOK }}
          title: "${{ vars.REPO_NAME }} nightly: ${{ vars.TEXT_SUCCESS }}"
          url: https://github.com/Kometa-Team/${{ vars.REPO_NAME }}/actions/runs/${{ github.run_id }}
          color: ${{ vars.COLOR_SUCCESS }}
          username: ${{ vars.BOT_NAME }}
          avatar_url: ${{ vars.BOT_IMAGE }}
          author: ${{ vars.DOCKER_NAME }}
          author_icon_url: ${{ vars.DOCKER_IMAGE }}

      - name: Discord Failure Notification
        uses: Kometa-Team/discord-notifications@master
        if: failure()
        with:
          webhook_id_token: ${{ secrets.BUILD_WEBHOOK }}
          message: ${{ vars.BUILD_FAILURE_ROLE }}
          title: "${{ vars.REPO_NAME }} nightly: ${{ vars.TEXT_FAILURE }}"
          url: https://github.com/Kometa-Team/${{ vars.REPO_NAME }}/actions/runs/${{ github.run_id }}
          color: ${{ vars.COLOR_FAILURE }}
          username: ${{ vars.BOT_NAME }}
          avatar_url: ${{ vars.BOT_IMAGE }}
          author: ${{ vars.DOCKER_NAME }}
          author_icon_url: ${{ vars.DOCKER_IMAGE }}

  commit-notification:
    runs-on: ubuntu-latest
    needs: [ increment-build, verify-changes, docker-build-nightly ]
    if: ${{ success() && needs.verify-changes.outputs.build == 'true' }}
    steps:

      - name: Send Discord Commit Notification
        uses: Kometa-Team/discord-notifications@master
        with:
          webhook_id_token: ${{ secrets.NIGHTLY_WEBHOOK }}
          title: Kometa ${{ needs.increment-build.outputs.version }} Build ${{ needs.increment-build.outputs.build-value }}
          url: https://github.com/Kometa-Team/Kometa/commit/${{ needs.increment-build.outputs.commit-hash }}
          description: ${{ needs.increment-build.outputs.commit-msg }}
          message: "<@&967002147520675840> - An update to Kometa has now been published and is available to users of the **nightly** branch."
          color: ${{ vars.COLOR_SUCCESS }}
          username: ${{ vars.BOT_NAME }}
          avatar_url: ${{ vars.BOT_IMAGE }}
          author: ${{ vars.REPO_NAME }} Nightly Release
          author_icon_url: ${{ vars.RELEASE_IMAGE }}