fetch-icons.yaml

###
#
# Regularly create a pull request with up-to-date icons
#
# This workflow has access to secrets and
# therefore will not run from a fork.
#
###

name: Fetch Icons

on:
  workflow_dispatch:
  schedule:
    #            ┌───────────── minute (0 - 59)
    #            │ ┌───────────── hour (0 - 23)
    #            │ │ ┌───────────── day of the month (1 - 31)
    #            │ │ │ ┌───────────── month (1 - 12 or JAN-DEC)
    #            │ │ │ │ ┌───────────── day of the week (0 - 6 or SUN-SAT)
    #            │ │ │ │ │
    - cron: '0 0 * * 0' # the job will run every Sunday at 0:00

jobs:
  fetch:
    runs-on: ubuntu-latest
    if: github.repository_owner == 'swisspost'

    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Setup
        uses: ./.github/actions/setup-pnpm

      - name: Get Date
        id: current-date
        run: echo "date=$(date +'%Y-%m-%d')" >> $GITHUB_OUTPUT

      - name: Create Branch
        id: current-branch
        run: |
          git checkout -b $BRANCH_NAME
          echo "branch=$BRANCH_NAME" >> $GITHUB_OUTPUT
        env:
          BRANCH_NAME: ${{ steps.current-date.outputs.date }}-update-icons

      - name: Install icons & dependencies
        run: pnpm --filter design-system-icons... --filter design-system-styles... install

      - name: Fetch Icons
        run: pnpm --filter design-system-icons fetchSVGs
        env:
          CEN_USERNAME: ${{ secrets.CEN_USERNAME }}
          CEN_PASSWORD: ${{ secrets.CEN_PASSWORD }}
          CEN_URL: ${{ secrets.CEN_URL }}

      - name: Build styles
        run: pnpm styles:build

      - name: Commit Changes
        run: |
          git config --global user.name "github-actions[bot]"
          git config --global user.email "github-actions[bot]@users.noreply.github.com"
          git add .
          git commit -am "chore(icons): update icon SVGs"
          git push -u origin ${{ steps.current-branch.outputs.branch }}

      - name: Get Changes
        id: changed-files
        uses: tj-actions/changed-files@v44
        with:
          files: ./packages/icons/public/post-icons/**

      - name: Exit if no changes
        if: steps.changed-files.outputs.any_modified == 'false'
        run: |
          git checkout main
          git push origin --delete ${{ steps.current-branch.outputs.branch }}

      - name: Get Changed Icons
        id: changed-icons
        if: steps.changed-files.outputs.any_modified != 'false'
        run: |
          get_icons() {
            # takes the list of icon file paths
            # replaces paths to keep the icon numbers only
            # separates with commas and replace the last one with "and"
            echo $@ | sed 's/[^ ]*\/\([[:digit:]]*\)\.svg/\1/g' | sed 's/ /, /g' | sed 's/\(.*\),/\1 and/g'
          }

          echo "updated_icons=$(get_icons $MODIFIED_FILES $RENAMED_FILES $COPIED_FILES)"  >> $GITHUB_OUTPUT
          echo "added_icons=$(get_icons $ADDED_FILES)"                                    >> $GITHUB_OUTPUT
          echo "deleted_icons=$(get_icons $DELETED_FILES)"                                >> $GITHUB_OUTPUT
        env:
          ADDED_FILES: ${{ steps.changed-files.outputs.added_files }}
          MODIFIED_FILES: ${{ steps.changed-files.outputs.modified_files }}
          RENAMED_FILES: ${{ steps.changed-files.outputs.renamed_files }}
          COPIED_FILES: ${{ steps.changed-files.outputs.copied_files }}
          DELETED_FILES: ${{ steps.changed-files.outputs.deleted_files }}

      - name: Create Changeset
        if: steps.changed-files.outputs.any_modified != 'false'
        run: |
          pluralize_if_needed() {
            # adds an "s" only if there are multiple arguments
            echo $([ $# = 1 ] && echo "" || echo "s")
          }

          declare -a bump
          declare -a description
          if [[ -n $UPDATED_ICONS ]]; then
            bump="patch"
            description+="Updated icon$(pluralize_if_needed $UPDATED_ICONS) number ${UPDATED_ICONS}. "
          fi
          if [[ -n $ADDED_ICONS ]]; then
            bump="minor"
            description+="Added icon$(pluralize_if_needed $ADDED_ICONS) number ${ADDED_ICONS}. "
          fi
          if [[ -n $DELETED_ICONS ]]; then
            bump="major"
            description+="Deleted icon$(pluralize_if_needed $DELETED_ICONS) number ${DELETED_ICONS}. "
          fi

          echo ---                                          >  $CHANGESET
          echo "'@swisspost/design-system-icons': ${bump}"  >> $CHANGESET
          echo ---                                          >> $CHANGESET
          echo                                              >> $CHANGESET
          echo "${description[@]}" | xargs                  >> $CHANGESET
          echo                                              >> $CHANGESET
        env:
          CHANGESET: ./.changeset/${{ steps.current-branch.outputs.branch }}.md
          UPDATED_ICONS: ${{ steps.changed-icons.outputs.updated_icons }}
          ADDED_ICONS: ${{ steps.changed-icons.outputs.added_icons }}
          DELETED_ICONS: ${{ steps.changed-icons.outputs.deleted_icons }}

      - name: Commit Changeset
        if: steps.changed-files.outputs.any_modified != 'false'
        run: |
          git add .
          git commit -am "chore(icons): add changeset"
          git push -u origin ${{ steps.current-branch.outputs.branch }}

      - name: Write PR Body
        id: pr-body
        if: steps.changed-files.outputs.any_modified != 'false'
        run: |
          echo "file=$PR_BODY_FILE" >> $GITHUB_OUTPUT
          echo "# Design system icons are now up to date!" >  $PR_BODY_FILE
          if [[ -n $UPDATED_ICONS ]]; then
            echo "## Updated icons"                        >> $PR_BODY_FILE
            echo $UPDATED_ICONS                            >> $PR_BODY_FILE
          fi
          if [[ -n $ADDED_ICONS ]]; then
            echo "## Added icons"                          >> $PR_BODY_FILE
            echo $ADDED_ICONS                              >> $PR_BODY_FILE
          fi
          if [[ -n $DELETED_ICONS ]]; then
            echo "## Deleted icons"                        >> $PR_BODY_FILE
            echo $DELETED_ICONS                            >> $PR_BODY_FILE
          fi
        env:
          PR_BODY_FILE: pr-body.md
          UPDATED_ICONS: ${{ steps.changed-icons.outputs.updated_icons }}
          ADDED_ICONS: ${{ steps.changed-icons.outputs.added_icons }}
          DELETED_ICONS: ${{ steps.changed-icons.outputs.deleted_icons }}

      - name: Create PR
        if: steps.changed-files.outputs.any_modified != 'false'
        run: |
          gh pr create --title "chore(icons): :point_up: update icons" --body-file ${{ steps.pr-body.outputs.file }}
        env:
          GITHUB_TOKEN: ${{ secrets.SWISSPOSTDEVS_ACCESS_TOKEN }}