auto-changeset.yml

name: Auto Generate Changeset

on:
  pull_request:
    types: [labeled]

permissions:
  contents: write
  pull-requests: write

jobs:
  auto-changeset:
    runs-on: ubuntu-latest
    if: |
      github.event.pull_request.head.repo.full_name == github.repository &&
      (contains(github.event.pull_request.labels.*.name, 'patch') ||
      contains(github.event.pull_request.labels.*.name, 'minor') ||
      contains(github.event.pull_request.labels.*.name, 'major') ||
      contains(github.event.pull_request.labels.*.name, 'patch:sdk') ||
      contains(github.event.pull_request.labels.*.name, 'patch:wallets') ||
      contains(github.event.pull_request.labels.*.name, 'patch:render-helper') ||
      contains(github.event.pull_request.labels.*.name, 'patch:ui') ||
      contains(github.event.pull_request.labels.*.name, 'minor:sdk') ||
      contains(github.event.pull_request.labels.*.name, 'minor:wallets') ||
      contains(github.event.pull_request.labels.*.name, 'minor:render-helper') ||
      contains(github.event.pull_request.labels.*.name, 'minor:ui') ||
      contains(github.event.pull_request.labels.*.name, 'major:sdk') ||
      contains(github.event.pull_request.labels.*.name, 'major:wallets') ||
      contains(github.event.pull_request.labels.*.name, 'major:render-helper') ||
      contains(github.event.pull_request.labels.*.name, 'major:ui'))

    steps:
      - uses: actions/checkout@v4
        with:
          ref: ${{ github.event.pull_request.head.ref }}
          fetch-depth: 0
          persist-credentials: true

      - uses: pnpm/action-setup@v3
        with:
          version: 11.5.0
          run_install: false

      - uses: actions/setup-node@v4
        with:
          node-version: 24
          cache: pnpm
          cache-dependency-path: pnpm-lock.yaml

      - name: Install dependencies
        run: pnpm install --frozen-lockfile

      - name: Generate changeset
        env:
          PR_TITLE: ${{ github.event.pull_request.title }}
          PR_NUMBER: ${{ github.event.pull_request.number }}
          PR_LABELS: ${{ toJson(github.event.pull_request.labels.*.name) }}
        run: |
          set -e

          LABELS=$(echo "$PR_LABELS" | jq -r '.[]')

          # Use associative array to track per-package bump types
          declare -A PACKAGE_BUMPS
          DEFAULT_BUMP="patch"

          # Helper function to set bump type with conflict detection
          # Uses precedence: major > minor > patch
          set_bump() {
            local package=$1
            local new_bump=$2
            local current_bump="${PACKAGE_BUMPS[$package]}"

            if [ -n "$current_bump" ] && [ "$current_bump" != "$new_bump" ]; then
              echo "⚠️  Conflicting labels for $package: $current_bump and $new_bump"
              # Use precedence: major > minor > patch
              if [ "$new_bump" = "major" ] || [ "$current_bump" = "patch" -a "$new_bump" = "minor" ]; then
                echo "   → Using higher severity: $new_bump"
                PACKAGE_BUMPS[$package]=$new_bump
              else
                echo "   → Keeping higher severity: $current_bump"
              fi
            else
              PACKAGE_BUMPS[$package]=$new_bump
            fi
          }

          # Check package-specific labels
          if echo "$LABELS" | grep -q "patch:sdk"; then set_bump "@ecency/sdk" "patch"; fi
          if echo "$LABELS" | grep -q "minor:sdk"; then set_bump "@ecency/sdk" "minor"; fi
          if echo "$LABELS" | grep -q "major:sdk"; then set_bump "@ecency/sdk" "major"; fi

          if echo "$LABELS" | grep -q "patch:wallets"; then set_bump "@ecency/wallets" "patch"; fi
          if echo "$LABELS" | grep -q "minor:wallets"; then set_bump "@ecency/wallets" "minor"; fi
          if echo "$LABELS" | grep -q "major:wallets"; then set_bump "@ecency/wallets" "major"; fi

          if echo "$LABELS" | grep -q "patch:render-helper"; then set_bump "@ecency/render-helper" "patch"; fi
          if echo "$LABELS" | grep -q "minor:render-helper"; then set_bump "@ecency/render-helper" "minor"; fi
          if echo "$LABELS" | grep -q "major:render-helper"; then set_bump "@ecency/render-helper" "major"; fi

          if echo "$LABELS" | grep -q "patch:ui"; then set_bump "@ecency/ui" "patch"; fi
          if echo "$LABELS" | grep -q "minor:ui"; then set_bump "@ecency/ui" "minor"; fi
          if echo "$LABELS" | grep -q "major:ui"; then set_bump "@ecency/ui" "major"; fi

          # If no package-specific labels, check generic labels and detect changed packages
          if [ ${#PACKAGE_BUMPS[@]} -eq 0 ]; then
            if echo "$LABELS" | grep -q "major"; then
              DEFAULT_BUMP="major"
            elif echo "$LABELS" | grep -q "minor"; then
              DEFAULT_BUMP="minor"
            fi

            git fetch origin ${{ github.event.pull_request.base.ref }}
            CHANGED_FILES=$(git diff --name-only origin/${{ github.event.pull_request.base.ref }}...HEAD)

            if echo "$CHANGED_FILES" | grep -q "^packages/sdk/"; then set_bump "@ecency/sdk" "$DEFAULT_BUMP"; fi
            if echo "$CHANGED_FILES" | grep -q "^packages/wallets/"; then set_bump "@ecency/wallets" "$DEFAULT_BUMP"; fi
            if echo "$CHANGED_FILES" | grep -q "^packages/render-helper/"; then set_bump "@ecency/render-helper" "$DEFAULT_BUMP"; fi
            if echo "$CHANGED_FILES" | grep -q "^packages/ui/"; then set_bump "@ecency/ui" "$DEFAULT_BUMP"; fi
          fi

          if [ ${#PACKAGE_BUMPS[@]} -eq 0 ]; then
            echo "No publishable packages changed, skipping changeset generation"
            exit 0
          fi

          CHANGESET_FILE=".changeset/pr-${PR_NUMBER}.md"
          rm -f "$CHANGESET_FILE"

          echo "---" > "$CHANGESET_FILE"
          for pkg in "${!PACKAGE_BUMPS[@]}"; do
            echo "\"$pkg\": ${PACKAGE_BUMPS[$pkg]}" >> "$CHANGESET_FILE"
          done
          echo "---" >> "$CHANGESET_FILE"
          echo "" >> "$CHANGESET_FILE"

          if [[ "$PR_TITLE" == *"(#${PR_NUMBER})"* ]]; then
            echo "$PR_TITLE" >> "$CHANGESET_FILE"
          else
            echo "$PR_TITLE (#${PR_NUMBER})" >> "$CHANGESET_FILE"
          fi

          cat "$CHANGESET_FILE"

      - name: Apply version bumps
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: pnpm changeset version

      - name: Rebuild affected packages
        run: |
          set -e

          CHANGED_PACKAGES=""

          # Detect which packages were version-bumped by checking git diff on package.json versions
          if git diff --name-only | grep -q "^packages/sdk/"; then CHANGED_PACKAGES="$CHANGED_PACKAGES sdk"; fi
          if git diff --name-only | grep -q "^packages/wallets/"; then CHANGED_PACKAGES="$CHANGED_PACKAGES wallets"; fi
          if git diff --name-only | grep -q "^packages/render-helper/"; then CHANGED_PACKAGES="$CHANGED_PACKAGES render-helper"; fi
          if git diff --name-only | grep -q "^packages/ui/"; then CHANGED_PACKAGES="$CHANGED_PACKAGES ui"; fi

          if [ -z "$CHANGED_PACKAGES" ]; then
            echo "No packages to rebuild"
            exit 0
          fi

          echo "Rebuilding packages:$CHANGED_PACKAGES"

          # Build SDK first since wallets depends on it
          if echo "$CHANGED_PACKAGES" | grep -q "sdk"; then
            echo "Building @ecency/sdk..."
            pnpm --filter @ecency/sdk build
          fi

          # Build wallets and render-helper (can be parallel but sequential is safer in CI)
          if echo "$CHANGED_PACKAGES" | grep -q "wallets"; then
            echo "Building @ecency/wallets..."
            pnpm --filter @ecency/wallets build
          fi

          if echo "$CHANGED_PACKAGES" | grep -q "render-helper"; then
            echo "Building @ecency/render-helper..."
            pnpm --filter @ecency/render-helper build
          fi

          if echo "$CHANGED_PACKAGES" | grep -q "ui"; then
            echo "Building @ecency/ui..."
            pnpm --filter @ecency/ui build
          fi

      - name: Commit & push changes (same PR)
        if: github.event.pull_request.head.repo.full_name == github.repository
        env:
          BRANCH_REF: ${{ github.event.pull_request.head.ref }}
          PR_NUMBER: ${{ github.event.pull_request.number }}
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"

          git add -A

          if git diff --staged --quiet; then
            echo "No changes to commit"
            exit 0
          fi

          git commit -m "chore: apply changeset versioning for PR #${PR_NUMBER}"
          git push origin "HEAD:${BRANCH_REF}"