name: Update Algolia Search Index

off: # change to `on:` to turn on
  workflow_dispatch:
    branches:
    - production
  push:
    paths:
      - content/**/*
      - hugo.toml

env:
  # Name of the branch in your repository which will store your generated site.
  SITE-BRANCH: master

jobs:
  build:
  # In this phase, the code is pulled from main and the site rendered in Hugo. The built site is stored as an artifact for other stages. # deploy:
    runs-on: ubuntu-20.04
    concurrency:
      group: ${{ github.workflow }}-${{ github.ref }}
    steps:
    - uses: actions/checkout@v3
      with:
        submodules: true  # Fetch Hugo themes (true OR recursive)
        fetch-depth: 0    # Fetch all history for .GitInfo and .Lastmod

    - name: Setup Hugo
      uses: peaceiris/actions-hugo@v2
      with:
        hugo-version: 'latest'
        extended: true

    - name: Build
      run: hugo -e "production" -d "dist" --minify
    # If build succeeds, store the dist/ dir as an artifact to be used in subsequent phases.
    - name: Upload output dist dir as artifact
      uses: actions/upload-artifact@v1
      with:
        name: dist
        path: dist/
  publish:
  # In the publish phase, the site is pushed up to a different branch which only stores the dist/ folder ("site" branch) and is also delta synchronized to the S3 bucket. CloudFront invalidation happens last.
    runs-on: ubuntu-20.04
    needs: build
    steps:
    # Check out the site branch this time since we have to ultimately commit those changes there.
    - name: Checkout site branch
      uses: actions/checkout@v3
      with:
        submodules: true
        fetch-depth: 0
        ref: ${{ env.SITE-BRANCH }}
    # Download the artifact containing the newly built site. This overwrites the dist/ dir from the check out above.
    - name: Download artifact from build stage
      uses: actions/download-artifact@v1
      with:
        name: dist
    # Add all the files/changes in dist/ that were pulled down from the build stage and then commit them.
    # The final line sets a GitHub Action output value that can be read by other steps.
    # This function cannot store mult-line values so newline chars must be stripped.
    - name: Commit files
      id: can_commit
      run: |
        git config --local user.email "action@github.com"
        git config --local user.name "GitHub Action"
        cp dist/index.json index.json
        git add -A index.json
        commit_message=$(git commit -m "Build search index." -a | tr -d '\n' || true)
        echo "commit_message=$commxit_message >> $GITHUB_OUTPUT"

    # Checks if previous stage had any valid commit.
    - name: Nothing to commit
      id: nothing_committed
      if: contains(steps.can_commit.outputs.commit_message, 'nothing to commit')
      run: echo "Saw that no changes were made to Hugo site."
    # Push those changes back to the site branch.
    - name: Push to site branch
      if: steps.nothing_committed.conclusion == 'skipped'
      uses: ad-m/github-push-action@master
      with:
        github_token: ${{ secrets.GITHUB_TOKEN }}
        branch: ${{ env.SITE-BRANCH }}
  index:
    runs-on: ubuntu-latest
    needs: publish
    name: Upload Algolia Index
    steps:
    - uses: actions/checkout@v2
      with:
        fetch-depth: 0
    - uses: wangchucheng/algolia-uploader@master
      with:
        # Such as `Z0U0ACGBN8`
        app_id: ${{ secrets.AGOLIA_INDEX_ID }}
        # Go to https://github.com/dimi365/website/settings/secrets/actions and set an AGOLIA_ADMIN_KEY secret key
        admin_key: ${{ secrets.AGOLIA_ADMIN_KEY }}
        # The algolia search index name.
        index_name: compose # edit appropriately
        # The index file path relative to repo root. no leading forward slash
        index_file_path: index.json