name: Release

on:
  push:
    tags:
      - "v*.*.*" # Run workflow on version tags, e.g. v1.0.0.

jobs:
  release:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v2

      - name: Setup Node.js environment
        uses: actions/setup-node@v2.1.2
        with:
          node-version: "14.x"

      - name: Setup Go environment
        uses: actions/setup-go@v2
        with:
          go-version: "1.15"

      - name: Get yarn cache directory path
        id: yarn-cache-dir-path
        run: echo "::set-output name=dir::$(yarn cache dir)"

      - name: Cache yarn cache
        uses: actions/cache@v2
        id: cache-yarn-cache
        with:
          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
          key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
          restore-keys: |
            ${{ runner.os }}-yarn-

      - name: Cache node_modules
        id: cache-node-modules
        uses: actions/cache@v2
        with:
          path: node_modules
          key: ${{ runner.os }}-${{ matrix.node-version }}-nodemodules-${{ hashFiles('**/yarn.lock') }}
          restore-keys: |
            ${{ runner.os }}-${{ matrix.node-version }}-nodemodules-

      - name: Install dependencies
        run: yarn install --frozen-lockfile;
        if: |
          steps.cache-yarn-cache.outputs.cache-hit != 'true' ||
          steps.cache-node-modules.outputs.cache-hit != 'true'

      - name: Build and test frontend
        run: yarn build

      - name: Sign plugin
        run: yarn sign
        env:
          GRAFANA_API_KEY: ${{ secrets.GRAFANA_API_KEY }} # Requires a Grafana API key from Grafana.com.

      - name: Get plugin metadata
        id: metadata
        run: |
          sudo apt-get install jq

          export GRAFANA_PLUGIN_ID=$(cat dist/plugin.json | jq -r .id)
          export GRAFANA_PLUGIN_VERSION=$(cat dist/plugin.json | jq -r .info.version)
          export GRAFANA_PLUGIN_TYPE=$(cat dist/plugin.json | jq -r .type)
          export GRAFANA_PLUGIN_UPDATED=$(cat dist/plugin.json | jq -r .info.updated)
          export GRAFANA_PLUGIN_ARTIFACT=${GRAFANA_PLUGIN_ID}-${GRAFANA_PLUGIN_VERSION}.zip
          export GRAFANA_PLUGIN_ARTIFACT_CHECKSUM=${GRAFANA_PLUGIN_ARTIFACT}.md5
          export GRAFANA_PLUGIN_RELEASE_NAME="${GRAFANA_PLUGIN_VERSION} (${GRAFANA_PLUGIN_UPDATED})"

          echo "::set-output name=plugin-id::${GRAFANA_PLUGIN_ID}"
          echo "::set-output name=plugin-version::${GRAFANA_PLUGIN_VERSION}"
          echo "::set-output name=plugin-type::${GRAFANA_PLUGIN_TYPE}"
          echo "::set-output name=archive::${GRAFANA_PLUGIN_ARTIFACT}"
          echo "::set-output name=archive-checksum::${GRAFANA_PLUGIN_ARTIFACT_CHECKSUM}"
          echo "::set-output name=release-name::${GRAFANA_PLUGIN_RELEASE_NAME}"

          echo ::set-output name=github-tag::${GITHUB_REF#refs/*/}

      - name: Read changelog
        id: changelog
        run: |
          # Get the latest section in CHANGELOG without it's header.
          awk '/^$/{next} /^## / {s++;next} s == 1 {print}' CHANGELOG.md > release_notes.md
          echo "::set-output name=path::release_notes.md"

      - name: Check package version
        run: if [ "v${{ steps.metadata.outputs.plugin-version }}" != "${{ steps.metadata.outputs.github-tag }}" ]; then printf "\033[0;31mPlugin version doesn't match tag name\033[0m\n"; exit 1; fi

      - name: Package plugin
        id: package-plugin
        run: |
          mv dist ${{ steps.metadata.outputs.plugin-id }}
          zip ${{ steps.metadata.outputs.archive }} ${{ steps.metadata.outputs.plugin-id }} -r
          md5sum ${{ steps.metadata.outputs.archive }} > ${{ steps.metadata.outputs.archive-checksum }}
          echo "::set-output name=checksum::$(cat ./${{ steps.metadata.outputs.archive-checksum }} | cut -d' ' -f1)"

      - name: Lint plugin
        run: |
          git clone https://github.com/grafana/plugin-validator
          pushd ./plugin-validator/cmd/plugincheck
          go install
          popd
          # Ignore error about twitter.com link :(
          # (https://twitter.com/flant_com) (`400 Bad Request`).
          plugincheck ${{ steps.metadata.outputs.archive }} || true

      - name: Create release
        id: create_release
        uses: actions/create-release@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          tag_name: ${{ github.ref }}
          release_name: ${{ steps.metadata.outputs.release-name }}
          body_path: ${{ steps.changelog.outputs.path }}
          draft: true

      - name: Add plugin to release
        id: upload-plugin-asset
        uses: actions/upload-release-asset@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          upload_url: ${{ steps.create_release.outputs.upload_url }}
          asset_path: ./${{ steps.metadata.outputs.archive }}
          asset_name: ${{ steps.metadata.outputs.archive }}
          asset_content_type: application/zip

      - name: Add checksum to release
        id: upload-checksum-asset
        uses: actions/upload-release-asset@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          upload_url: ${{ steps.create_release.outputs.upload_url }}
          asset_path: ./${{ steps.metadata.outputs.archive-checksum }}
          asset_name: ${{ steps.metadata.outputs.archive-checksum }}
          asset_content_type: text/plain

      - name: Publish to Grafana.com
        run: |
          echo A draft release has been created for your plugin. Please review and publish it. Then submit your plugin to grafana.com/plugins by opening a PR to https://github.com/grafana/grafana-plugin-repository with the following entry:
          echo
          echo '{ "id": "${{ steps.metadata.outputs.plugin-id }}", "type": "${{ steps.metadata.outputs.plugin-type }}", "url": "https://github.com/${{ github.repository }}", "versions": [ { "version": "${{ steps.metadata.outputs.plugin-version }}", "commit": "${{ github.sha }}", "url": "https://github.com/${{ github.repository }}", "download": { "any": { "url": "https://github.com/${{ github.repository }}/releases/download/v${{ steps.metadata.outputs.plugin-version }}/${{ steps.metadata.outputs.archive }}", "md5": "${{ steps.package-plugin.outputs.checksum }}" } } } ] }' | jq .
