feat: add a chart to deploy the music notifications app

.github/linters/ct.yaml

@@ -0,0 +1,3 @@
+chart-dirs:
+- charts
+validate-maintainers: false

.github/workflows/build.yaml

@@ -0,0 +1,42 @@
+name: Deployment
+
+on:
+  push:
+    branches:
+      - 'main'
+  pull_request:
+    branches:
+      - 'main'
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: plexinc/slack-music-notifications
+          tags: |
+            type=ref,event=branch
+            type=sha
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to DockerHub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ vars.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          platforms: linux/amd64,linux/arm64,linux/amd64/v2

.github/workflows/helm.yaml

@@ -0,0 +1,76 @@
+name: Helm
+
+on:
+  push:
+    branches:
+      - master
+    paths:
+      - 'charts/**'
+permissions:
+  contents: read
+
+jobs:
+
+  changes:
+    permissions:
+      contents: read  # for dorny/paths-filter to fetch a list of changed files
+      pull-requests: read  # for dorny/paths-filter to read pull requests
+    runs-on: ubuntu-latest
+    if: github.repository == 'plexinc/plex-slack-music-notifications'
+    outputs:
+      docs: ${{ steps.filter.outputs.docs }}
+      charts: ${{ steps.filter.outputs.charts }}
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Run Artifact Hub lint
+        run: |
+          wget https://github.com/artifacthub/hub/releases/download/v1.5.0/ah_1.5.0_linux_amd64.tar.gz
+          echo 'ad0e44c6ea058ab6b85dbf582e88bad9fdbc64ded0d1dd4edbac65133e5c87da *ah_1.5.0_linux_amd64.tar.gz' | shasum -c
+          tar -xzvf ah_1.5.0_linux_amd64.tar.gz ah
+          ./ah lint -p charts/music-notifications || exit 1
+          rm -f ./ah ./ah_1.5.0_linux_amd64.tar.gz
+
+      - uses: dorny/paths-filter@v3
+        id: filter
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          filters: |
+            charts:
+              - 'charts/music-notifications/Chart.yaml'
+              - 'charts/music-notifications/values.yaml'
+
+  chart:
+    name: Release Chart
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: write # needed to write releases
+
+    needs:
+      - changes
+    if: github.repository == 'plexinc/plex-slack-music-notifications' && needs.changes.outputs.charts == 'true'
+
+    steps:
+      - name: Checkout master
+        uses: actions/checkout@v4 # v3.5.3
+        with:
+          # Fetch entire history. Required for chart-releaser; see https://github.com/helm/chart-releaser-action/issues/13#issuecomment-602063896
+          fetch-depth: 0
+
+      - name: Setup
+        shell: bash
+        run: |
+          git config --global user.name "$GITHUB_ACTOR"
+          git config --global user.email "[email protected]"
+
+      - name: Helm Chart Releaser
+        uses: helm/[email protected]
+        env:
+          CR_SKIP_EXISTING: "false"
+          CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
+          CR_RELEASE_NAME_TEMPLATE: "helm-chart-{{ .Version }}"
+        with:
+          charts_dir: charts

.github/workflows/lint-test.yaml

@@ -0,0 +1,49 @@
+name: Lint and Test Charts
+
+# yamllint disable-line rule:truthy
+on:
+  workflow_call:
+  workflow_dispatch:
+  pull_request:
+    paths:
+    - 'charts/**'
+
+jobs:
+  lint-test:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
+
+    - name: Set up Helm
+      uses: azure/setup-helm@v4
+      with:
+        version: v3.13.1
+
+    - uses: actions/setup-python@v5
+      with:
+        python-version: 3.x
+        check-latest: true
+
+    - name: Set up chart-testing
+      uses: helm/chart-testing-action@v2
+
+    - name: Run chart-testing (list-changed)
+      id: list-changed
+      run: |
+        changed=$(ct list-changed --config .github/linters/ct.yaml)
+        if [[ -n "$changed" ]]; then
+          echo "changed=true" >> "$GITHUB_OUTPUT"
+        fi
+
+    - name: Run chart-testing (lint)
+      run: ct lint --config .github/linters/ct.yaml
+
+    - name: Create kind cluster
+      uses: helm/kind-action@v1
+      if: steps.list-changed.outputs.changed == 'true'
+
+    - name: Run chart-testing (install)
+      run: ct install --config .github/linters/ct.yaml

charts/music-notifications/.helmignore

@@ -0,0 +1,23 @@
+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*.orig
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/

charts/music-notifications/Chart.yaml

@@ -0,0 +1,34 @@
+apiVersion: v2
+name: music-notifications
+description: A Helm chart for deploying the Slack Music Notifications app
+
+keywords:
+- plex
+- music
+- slack
+
+home: https://www.plex.tv
+icon: https://www.plex.tv/wp-content/themes/plex/assets/img/favicons/plex-152.png
+# A chart can be either an 'application' or a 'library' chart.
+#
+# Application charts are a collection of templates that can be packaged into versioned archives
+# to be deployed.
+#
+# Library charts provide useful utilities or functions for the chart developer. They're included as
+# a dependency of application charts to inject those utilities and functions into the rendering
+# pipeline. Library charts do not define any templates and therefore cannot be deployed.
+type: application
+
+# This is the chart version. This version number should be incremented each time you make changes
+# to the chart and its templates, including the app version.
+# Versions are expected to follow Semantic Versioning (https://semver.org/)
+version: 0.1.0
+
+# This is the version number of the application being deployed. This version number should be
+# incremented each time you make changes to the application. Versions are not expected to
+# follow Semantic Versioning. They should reflect the version the application is using.
+# It is recommended to use it with quotes.
+appVersion: "1.0.0"
+
+sources:
+- https://github.com/plexinc/plex-slack-music-notifications