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cover-image.yml
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name: Fix missing cover images in blog posts
on:
push:
branches: [main]
pull_request:
branches: [main]
workflow_dispatch:
inputs:
commit_message:
type: string
description: Commit message to use for this content build step
required: false
concurrency:
group: ${{ github.workflow }}-${{ github.ref }}
cancel-in-progress: true
jobs:
scan-mdx-files:
runs-on: ubuntu-latest
permissions:
contents: write
steps:
- uses: actions/checkout@v4
- name: Set up Node.js
uses: actions/setup-node@v4
with:
node-version: 18
cache: 'yarn'
cache-dependency-path: 'yarn.lock'
- name: Install dependencies
run: yarn install --frozen-lockfile
- name: Scan MDX files
id: scan
run: |
missing_images=()
for file in $(find src/content/blog -name "*.mdx"); do
if ! node -e "
const matter = require('gray-matter');
const fs = require('fs');
const fileContents = fs.readFileSync('$file', 'utf8');
const { data } = matter(fileContents);
if (!data.coverImage) {
console.log('$file is missing coverImage');
process.exit(1);
}
"; then
dir_name=$(dirname "$file")
base_name=$(basename "$dir_name")
missing_images+=("$base_name")
fi
done
if [ ${#missing_images[@]} -eq 0 ]; then
echo "missing_images=[]" >> $GITHUB_OUTPUT
else
json_array=$(printf '%s\n' "${missing_images[@]}" | jq -R . | jq -s -c .)
echo "missing_images=$json_array" >> $GITHUB_OUTPUT
fi
outputs:
missing_images: ${{ steps.scan.outputs.missing_images }}
fetch-images:
needs: scan-mdx-files
runs-on: ubuntu-latest
if: ${{ fromJson(needs.scan-mdx-files.outputs.missing_images)[0] }}
strategy:
matrix:
image: ${{ fromJson(needs.scan-mdx-files.outputs.missing_images) }}
max-parallel: 5
steps:
- uses: actions/checkout@v4
- name: Fetch image from R2
uses: cloudflare/wrangler-action@v3
with:
apiToken: ${{ secrets.CLOUDFLARE_API_TOKEN }}
accountId: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
command: r2 object get ${{ secrets.R2_BUCKET_NAME }}/blog/cover/${{ matrix.image }}/image.webp --file src/content/blog/${{ matrix.image }}/image.webp
- name: Update frontmatter
run: |
mdx_file="src/content/blog/${{ matrix.image }}/index.mdx"
sed -i '0,/---/{/---/!b;s/---/---\ncoverImage: ".\/image.webp"/}' "$mdx_file"
echo "Updated frontmatter for $mdx_file"
- name: Upload changes
uses: actions/upload-artifact@v3
with:
name: updated-files-${{ matrix.image }}
path: |
src/content/blog/${{ matrix.image }}/image.webp
src/content/blog/${{ matrix.image }}/index.mdx
commit-changes:
needs: fetch-images
runs-on: ubuntu-latest
permissions:
contents: write
steps:
- uses: actions/checkout@v4
- name: Set up Node.js
uses: actions/setup-node@v4
with:
node-version: '18'
cache: yarn
cache-dependency-path: 'yarn.lock'
- name: Install dependencies
run: yarn install --frozen-lockfile
- name: Download all artifacts
uses: actions/download-artifact@v3
with:
path: artifacts
- name: Move artifacts to correct locations
run: |
for dir in artifacts/updated-files-*; do
blog_post_dir=$(basename "$dir" | sed 's/updated-files-//')
mkdir -p "src/content/blog/$blog_post_dir"
cp -R "$dir"/* "src/content/blog/$blog_post_dir/"
done
- name: Clean up artifacts directory
run: rm -rf artifacts
- name: Fix Formatting
run: yarn format:write
- name: Check for changes
id: stage
run: |
git add .
git diff --staged --quiet || echo "CHANGES_EXIST=true" >> $GITHUB_OUTPUT
- name: Commit Changes
if: steps.stage.outputs.CHANGES_EXIST == 'true'
uses: planetscale/ghcommit-action@v0.1.33
with:
commit_message: ${{ github.event.inputs.commit_message || 'Set missing cover images in blog posts' }}
repo: ${{ github.repository }}
branch: ${{ github.head_ref || github.ref_name }}
env:
GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
report-status:
needs: [scan-mdx-files, fetch-images, commit-changes]
if: failure()
runs-on: ubuntu-latest
steps:
- name: Report failure
run: |
echo "Some MDX files are missing coverImage frontmatter and images could not be fetched"
exit 1