name: "Tracker script update"

on:
  pull_request:
    paths:
      - 'tracker/src/**'
      - 'tracker/package.json'
      - 'tracker/package-lock.json'

jobs:
  tracker-script-update:
    runs-on: blacksmith-4vcpu-ubuntu-2404
    permissions:
      pull-requests: write
      contents: read
    steps:
      - name: Checkout code
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          repository: ${{ github.event.pull_request.head.repo.full_name }}
          ref: ${{ github.event.pull_request.head.ref }}
          token: ${{ secrets.PLAUSIBLE_BOT_GITHUB_TOKEN }}
          fetch-depth: 1

      - name: Checkout master for comparison
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          ref: master
          path: master-branch

      - name: Install jq and clickhouse-local
        run: |
          curl -fsSL 'https://packages.clickhouse.com/rpm/lts/repodata/repomd.xml.key' \
            | sudo gpg --batch --yes --dearmor -o /usr/share/keyrings/clickhouse-archive-keyring.gpg
          echo "deb [signed-by=/usr/share/keyrings/clickhouse-archive-keyring.gpg] https://packages.clickhouse.com/deb stable main" \
            | sudo tee /etc/apt/sources.list.d/clickhouse.list
          sudo apt-get update
          sudo apt-get install -y jq clickhouse-server

      - name: Compare and increment tracker_script_version
        id: increment
        run: |
          cd tracker
          # Get current version from PR branch
          PR_VERSION=$(jq '.tracker_script_version' package.json)

          # Get version from master, default to 0 if not present
          MASTER_VERSION=$(jq '.tracker_script_version // 0' ../master-branch/tracker/package.json)

          echo "PR tracker_script_version: $PR_VERSION"
          echo "Master tracker_script_version: $MASTER_VERSION"

          # Calculate new version
          NEW_VERSION=$((PR_VERSION + 1))

          # Check version conditions
          if [ $PR_VERSION -lt $MASTER_VERSION ]; then
            echo "::error::PR tracker tracker_script_version ($PR_VERSION) is less than master ($MASTER_VERSION) and cannot be incremented."
            echo "::error::Rebase or merge master into your PR to fix this."
            exit 1
          elif [ $NEW_VERSION -eq $((MASTER_VERSION + 1)) ]; then
            echo "Incrementing version from $PR_VERSION to $NEW_VERSION"
            jq ".tracker_script_version = $NEW_VERSION" package.json > package.json.tmp
            mv package.json.tmp package.json
            echo "version=$NEW_VERSION" >> $GITHUB_OUTPUT
            echo "changed=true" >> $GITHUB_OUTPUT
          else
            echo "Already incremented tracker_script_version in PR, skipping."
            echo "version=$PR_VERSION" >> $GITHUB_OUTPUT
            echo "changed=false" >> $GITHUB_OUTPUT
          fi

      - name: Commit and push changes
        uses: EndBug/add-and-commit@a94899bca583c204427a224a7af87c02f9b325d5
        if: steps.increment.outputs.changed == 'true'
        with:
          message: 'chore: Bump tracker_script_version to ${{ steps.increment.outputs.version }}'
          github_token: ${{ secrets.PLAUSIBLE_BOT_GITHUB_TOKEN }}
          add: |
            - tracker/package.json

      - name: Compile tracker code
        run: |
          cd master-branch/tracker
          npm install
          node compile.js --suffix master
          cp ../priv/tracker/js/plausible* ../../priv/tracker/js/

          cd ../../tracker
          npm install
          node compile.js --suffix pr

      - name: Run script size analyzer and set output
        id: analyze
        run: |
          cd tracker
          OUT=$(node compiler/analyze-sizes.js --baselineSuffix master --currentSuffix pr)
          # Set multiline output
          echo "sizes<<EOF" >> $GITHUB_OUTPUT
          echo "$OUT" >> $GITHUB_OUTPUT
          echo "EOF" >> $GITHUB_OUTPUT

      - name: Comment script size report on PR
        uses: thollander/actions-comment-pull-request@24bffb9b452ba05a4f3f77933840a6a841d1b32b # v3.0.1
        with:
          message: |
            ${{ steps.analyze.outputs.sizes }}
          comment-tag: size-report

      - name: Check PR has tracker release label set
        if: >-
          ${{ !(
          contains(github.event.pull_request.labels.*.name, 'tracker-release: patch') ||
          contains(github.event.pull_request.labels.*.name, 'tracker-release: minor') ||
          contains(github.event.pull_request.labels.*.name, 'tracker-release: major') ||
          contains(github.event.pull_request.labels.*.name, 'tracker-release: none') ) }}

        run: |
          echo "::error::PR changes tracker script but does not have a 'tracker release:' label. Please add one."
          exit 1

      - name: Get changed files
        id: changelog_changed
        uses: tj-actions/changed-files@22103cc46bda19c2b464ffe86db46df6922fd323
        with:
          files: |
            tracker/npm_package/CHANGELOG.md

      - name: Error if PR no tracker CHANGELOG.md updates
        if: >-
          ${{ (
          steps.changelog_changed.outputs.any_changed == 'false' &&
          !contains(github.event.pull_request.labels.*.name, 'tracker-release: none') ) }}
        run: |
          echo "::error::PR changes tracker script but does not have a tracker NPM package CHANGELOG.md update."
          exit 1