build.yml

name: "Build GitHub Pages"
run-name: "Build GitHub Pages"

on:
  workflow_call:
  push:
    branches-ignore: [main]

permissions:
  contents: read

env:
  GH_TOKEN: ${{ github.token }}

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: "Checkout"
        uses: actions/checkout@v3

      - name: "Install tools"
        run: sudo apt install tidy pandoc

      - name: "Install templates"
        run: |
          mkdir -p ~/.pandoc/templates
          curl -sSL 'https://github.com/tajmone/pandoc-goodies/raw/refs/heads/master/templates/html5/github/GitHub.html5' -o ~/.pandoc/templates/GitHub.html5

      - name: "Retrieve Code of Conduct"
        run: curl --header "${MEDIA_TYPE_HEADER}" --header "${AUTH_TOKEN_HEADER}" --create-dirs --output code-of-conduct.md "${CONTENTS_ENDPOINT}/CODE_OF_CONDUCT.md"
        env:
          CONTENTS_ENDPOINT: '${{ github.api_url }}/repos/${{ github.repository_owner }}/.github/contents'
          MEDIA_TYPE_HEADER: "Accept: application/vnd.github.raw"
          AUTH_TOKEN_HEADER: "Authorization: Bearer ${{ github.token }}"

      - name: "Retrieve Security Policy"
        run: curl --header "${MEDIA_TYPE_HEADER}" --header "${AUTH_TOKEN_HEADER}" --create-dirs --output security/policy.md "${CONTENTS_ENDPOINT}/SECURITY.md"
        env:
          CONTENTS_ENDPOINT: '${{ github.api_url }}/repos/${{ github.repository_owner }}/.github/contents'
          MEDIA_TYPE_HEADER: "Accept: application/vnd.github.raw"
          AUTH_TOKEN_HEADER: "Authorization: Bearer ${{ github.token }}"

      - name: "Retrieve Contribution Guidlines"
        run: curl --header "${MEDIA_TYPE_HEADER}" --header "${AUTH_TOKEN_HEADER}" --create-dirs --output contributing.md "${CONTENTS_ENDPOINT}/CONTRIBUTING.md"
        env:
          CONTENTS_ENDPOINT: '${{ github.api_url }}/repos/${{ github.repository_owner }}/.github/contents'
          MEDIA_TYPE_HEADER: "Accept: application/vnd.github.raw"
          AUTH_TOKEN_HEADER: "Authorization: Bearer ${{ github.token }}"

      - name: "Generate an authors.yaml file"
        run: gh api "${ENDPOINT}" --jq "${JQ_QUERY}" | tee authors.yaml
        env:
          ENDPOINT: '/repos/${{ github.repository }}/contributors'
          JQ_QUERY: '"author-meta:" + (["", (.[] | .login)] | join("\n- "))'

      - name: "Generate a changelog.md file"
        run: gh api "${ENDPOINT}" --template "${TEMPLATE}" | tee changelog.md
        env:
          ENDPOINT: '/repos/${{ github.repository }}/releases'
          TEMPLATE: |
            ---
            lang: en
            title: Changelog
            ...

            {{ range . -}}

            ## [{{.name}}]({{ .html_url }})

            {{- if .draft -}}
            {{ " " }}![This is a draft release.](https://img.shields.io/badge/DRAFT-grey)
            {{- else if .prerelease -}}
            {{ " " }}![This is a pre-release.](https://img.shields.io/badge/PRE--RELEASE-orange)
            {{- else if eq .tag_name "${{ steps.latest-release.outputs.tag_name }}" -}}
            {{ " " }}![This is the latest release.](https://img.shields.io/badge/LATEST-green)
            {{- end }}

            {{ .body }}

            {{ if .assets -}}

            ### Asset Downloads

            {{- "\n" -}}

            {{ range .assets }}
            - [{{ or .label .name }}]({{ .browser_download_url }})
            {{- end }}

            {{ end }}

            {{- end }}

            {{- /* noop */ -}}

      - name: "Create generated HTML files"
        run: |
          make -f - << \EOF

          all: $(patsubst %.md,%.html,$(wildcard *.md */*.md */*/*.md))
          	rm -f header.html

          %.html: %.md
          	pandoc --metadata-file=authors.yaml --template=GitHub.html5 --include-in-header=header.html --from markdown+yaml_metadata_block+backtick_code_blocks+fenced_code_attributes+inline_notes+emoji-implicit_figures --to html --standalone $< --output $@

          EOF

      - name: "Create redirect HTML files"
        run: |
          make -f - << \EOF

          all: $(patsubst %.redirect,%.html,$(wildcard *.redirect */*.redirect */*/*.redirect))
          	rm -f redirect.html $(wildcard *.redirect */*.redirect */*/*.redirect)

          %.html: %.redirect
          	@echo "Generating $@..."
          	$(file > $@, $(subst {{ .REDIRECT }},$(file < $<),$(file < redirect.html)))

          EOF

      - name: "Tidy the HTML"
        run: find . -name '*.html' | xargs tidy -indent --wrap 0 --output-html yes --warn-proprietary-attributes no -quiet -modify

      - name: "Archive Pages Artifact"
        uses: actions/upload-artifact@v4
        with:
          name: pages
          path: |
            .
            !CNAME
            !.nojekyll
            !.git*/**