name: Package & Release

on:
  push:
    tags:
      - "v*"
      - "*.*.*"

permissions:
  contents: write

jobs:
  release:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout (full history)
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Derive vars
        id: vars
        shell: bash
        run: |
          echo "name=${GITHUB_REPOSITORY##*/}" >> $GITHUB_OUTPUT              # e.g. jim_bridge
          echo "version=${GITHUB_REF_NAME#v}" >> $GITHUB_OUTPUT               # strip leading v

      - name: Build zip with folder prefix
        shell: bash
        run: |
          NAME='${{ steps.vars.outputs.name }}'
          VER='${{ steps.vars.outputs.version }}'
          git archive --format=zip --prefix="${NAME}/" -o "${NAME}-${VER}.zip" "$GITHUB_REF_NAME"
          ls -lh "${NAME}-${VER}.zip"

      # --- Patch notes generation (commit titles + links) -------------------
      - name: Find previous tag (SemVer aware)
        id: prev
        shell: bash
        run: |
          CUR="${GITHUB_REF_NAME}"
          # Sort tags by version desc, drop the current, take the next newest
          PREV=$(git tag --sort=-v:refname | grep -v -x "$CUR" | head -n 1 || true)
          echo "prev=$PREV" >> $GITHUB_OUTPUT
          echo "Previous tag: ${PREV:-<none>}"

      - name: Generate RELEASE_NOTES.md from commits
        shell: bash
        run: |
          REPO="${{ github.repository }}"
          CUR="${GITHUB_REF_NAME}"
          PREV='${{ steps.prev.outputs.prev }}'

          if [ -n "$PREV" ]; then
            RANGE="$PREV..$CUR"
            HEADER="## Changes in $CUR"
          else
            # First release: include all commits
            ROOT=$(git rev-list --max-parents=0 HEAD | tail -n 1)
            RANGE="$ROOT..$CUR"
            HEADER="## Changes"
          fi

          {
            echo "$HEADER"
            echo
            # Oldest → newest, subject only, skip merge commits
            # Escape '[' and ']' so markdown doesn't break on rare titles
            git log --reverse --no-merges --pretty=format:'- ['%h'] - %s' "$RANGE" \
              | perl -pe 's/([\[\]])/\\$1/g'
          } > RELEASE_NOTES.md

          echo "--- RELEASE_NOTES.md ---"
          cat RELEASE_NOTES.md
          echo "------------------------"

      - name: Create / Update GitHub Release
        uses: softprops/action-gh-release@v2
        with:
          tag_name: ${{ github.ref_name }}
          name: ${{ github.ref_name }}
          files: |
            *.zip
          body_path: RELEASE_NOTES.md   # attach our generated notes
          # If you wanted GitHub's auto notes instead, set:
          # generate_release_notes: true
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}