build-and-bump.yml

name: Build, bump version numbers, and update changelog

on:
  push:
    branches: [main] # not on insider release branch
    paths: [source/**] # only for build for source files
  workflow_dispatch: # allows manually triggering on github

permissions:
  contents: write

#───────────────────────────────────────────────────────────────────────────────

jobs:
  bump:
    runs-on: macos-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        # by default, no tags and only a single commit is fetched. To use git
        # history in the changelog step, we need to fetch all history.
        with:
          fetch-depth: 0 # 0 = all history
          fetch-tags: true

      #─────────────────────────────────────────────────────────────────────────

      - name: Build
        run: |
          cat ./source/*.css <(echo "/* @settings") ./source/style-settings.yaml <(echo "*/") \
            > ./theme.css

      - name: Bump version numbers
        run: |
          theme_header="./source/00 header.css"

          versionLine=$(grep --line-number --max-count=1 "^Version" "$theme_header")
          versionLnum=$(echo "$versionLine" | cut -d: -f1)
          currentVer=$(echo "$versionLine" | cut -d. -f2)
          nextVer=$((currentVer + 1))

          sed -E -i '' "${versionLnum} s/$currentVer/$nextVer/" "$theme_header"
          sed -E -i '' "${versionLnum} s/$currentVer/$nextVer/" "./theme.css"
          sed -E -i '' "/version/ s/$currentVer/$nextVer/" "./manifest.json"

      - name: Update Download Count in Readme
        run: |
          dl=$(curl -s "https://releases.obsidian.md/stats/theme" |
            grep -oe '"Shimmering Focus","download":[[:digit:]]*' |
            cut -d: -f2)
          sed -E -i '' "s/badge.*-[[:digit:]]+-/badge\/downloads-$dl-/" ./README.md

      - name: Update Changelog
        run: |
          git log :/bump.. --format="- %cs %s" | # commits since last `bump` commit
          	grep -vE "build|ci|style|bump" | # don't include internal changes
          	sed -E "s/^(- [0-9-]+) ([^ ]+): /\1 **\2**: /" >> "temp.md" # bold cc keyword
          grep -v "^$" "Changelog.md" >> "temp.md"
          mv -f "temp.md" "Changelog.md"

      #─────────────────────────────────────────────────────────────────────────

      - uses: stefanzweifel/git-auto-commit-action@v4
        with:
          commit_message: "bump: version & update changelog"
          branch: ${{ github.head_ref }}