prep-dev.yml

name: Roll CalVer to the new month

# On the 1st of each month, roll main's MARKETING_VERSION to <year>.<month>.1
# (un-padded month, matching Android's Packaging.kt rollover) so dogfood/deploy
# builds off main are labelled with the right month between releases. Commits
# straight to main via a PAT — the iOS mirror of Android's prep-dev.yml, which
# pushes to code/cash. The default GITHUB_TOKEN can neither open PRs nor push to
# main here, so BOT_GITHUB_TOKEN (an admin-owned PAT that bypasses the PR gate)
# is required.
#
# Within a month the cycle number is advanced by /release step 9a; this job only
# handles the month boundary. Safe to re-run / dispatch mid-month: it no-ops when
# main is already on the current month (it never downgrades the cycle).

on:
  schedule:
    - cron: '0 0 1 * *'
  workflow_dispatch:

jobs:
  roll-version:
    name: Roll MARKETING_VERSION to the new month
    runs-on: ubuntu-latest
    steps:
      - name: Checkout main
        uses: actions/checkout@v4
        with:
          ref: main
          fetch-depth: 0
          persist-credentials: false   # push with the PAT below, not GITHUB_TOKEN

      - name: Compute target version
        id: calc
        run: |
          set -euo pipefail
          PBX=Code.xcodeproj/project.pbxproj
          Y=$(date +%Y)
          M=$(date +%m | sed 's/^0//')          # un-padded month, matches Android
          NEW="$Y.$M.1"

          # Current app-family version = the sole non-1.0 MARKETING_VERSION value.
          mapfile -t CURVALS < <(grep -oE 'MARKETING_VERSION = [^;]+;' "$PBX" \
            | sed -E 's/MARKETING_VERSION = (.+);/\1/' | grep -vx '1.0' | sort -u)
          if [ "${#CURVALS[@]}" -ne 1 ]; then
            echo "Expected exactly one app-family MARKETING_VERSION, found: ${CURVALS[*]:-none}" >&2
            exit 1
          fi
          CUR="${CURVALS[0]}"
          echo "Current: $CUR  Target: $NEW"

          if [[ "$CUR" == "$Y.$M."* ]]; then
            echo "main is already on $Y.$M — nothing to roll (cycle is managed by /release)."
            echo "changed=false" >> "$GITHUB_OUTPUT"
            exit 0
          fi

          sed -i "s/MARKETING_VERSION = ${CUR//./\\.};/MARKETING_VERSION = $NEW;/g" "$PBX"
          git diff --quiet "$PBX" && { echo "changed=false" >> "$GITHUB_OUTPUT"; exit 0; }
          echo "changed=true" >> "$GITHUB_OUTPUT"
          echo "new=$NEW" >> "$GITHUB_OUTPUT"

      - name: Commit & push to main
        if: steps.calc.outputs.changed == 'true'
        env:
          GITHUB_TOKEN: ${{ secrets.BOT_GITHUB_TOKEN }}
          NEW: ${{ steps.calc.outputs.new }}
        run: |
          set -euo pipefail
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"
          git add Code.xcodeproj/project.pbxproj
          git commit -m "chore: bump version to $NEW"
          REMOTE="https://x-access-token:${GITHUB_TOKEN}@github.com/${{ github.repository }}.git"
          git pull --rebase "$REMOTE" main
          git push "$REMOTE" HEAD:main