---
name: Release on version.js update

on:
  push:
    branches:
      - master
    paths:
      - public/js/version.js

permissions:
  contents: write

jobs:
  release:
    runs-on: ubuntu-latest
    concurrency:
      group: release-${{ github.ref }}-${{ github.sha }}
      cancel-in-progress: false

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

      - name: Read version from version.js
        id: ver
        shell: bash
        run: |
          set -euo pipefail
          VER=$(grep -Eo "APP_VERSION\s*=\s*['\"]v[^'\"]+['\"]" public/js/version.js | sed -E "s/.*['\"](v[^'\"]+)['\"].*/\1/")
          if [[ -z "$VER" ]]; then
            echo "Could not parse APP_VERSION from version.js" >&2
            exit 1
          fi
          echo "version=$VER" >> "$GITHUB_OUTPUT"
          echo "Parsed version: $VER"

      - name: Skip if tag already exists
        id: tagcheck
        shell: bash
        run: |
          set -euo pipefail
          git fetch --tags --quiet
          if git rev-parse -q --verify "refs/tags/${{ steps.ver.outputs.version }}" >/dev/null; then
            echo "exists=true" >> "$GITHUB_OUTPUT"
            echo "Tag ${{ steps.ver.outputs.version }} already exists. Skipping release."
          else
            echo "exists=false" >> "$GITHUB_OUTPUT"
          fi

      - name: Prepare release notes from CHANGELOG.md (optional)
        if: steps.tagcheck.outputs.exists == 'false'
        id: notes
        shell: bash
        run: |
          set -euo pipefail
          NOTES_PATH=""
          if [[ -f CHANGELOG.md ]]; then
            awk '
              BEGIN{found=0}
              /^## / && !found {found=1}
              found && /^---$/ {exit}
              found {print}
            ' CHANGELOG.md > RELEASE_BODY.md || true

            # Trim trailing blank lines
            sed -i -e :a -e '/^\n*$/{$d;N;ba' -e '}' RELEASE_BODY.md || true

            if [[ -s RELEASE_BODY.md ]]; then
              NOTES_PATH="RELEASE_BODY.md"
            fi
          fi
          echo "path=$NOTES_PATH" >> "$GITHUB_OUTPUT"

      - name: (optional) Build archive to attach
        if: steps.tagcheck.outputs.exists == 'false'
        shell: bash
        run: |
          set -euo pipefail
          zip -r "FileRise-${{ steps.ver.outputs.version }}.zip" public/ README.md LICENSE >/dev/null || true

      # Path A: we have extracted notes -> use body_path
      - name: Create GitHub Release (with CHANGELOG snippet)
        if: steps.tagcheck.outputs.exists == 'false' && steps.notes.outputs.path != ''
        uses: softprops/action-gh-release@v2
        with:
          tag_name: ${{ steps.ver.outputs.version }}
          target_commitish: ${{ github.sha }}
          name: ${{ steps.ver.outputs.version }}
          body_path: ${{ steps.notes.outputs.path }}
          generate_release_notes: false
          files: |
            FileRise-${{ steps.ver.outputs.version }}.zip

      # Path B: no notes -> let GitHub auto-generate from commits
      - name: Create GitHub Release (auto notes)
        if: steps.tagcheck.outputs.exists == 'false' && steps.notes.outputs.path == ''
        uses: softprops/action-gh-release@v2
        with:
          tag_name: ${{ steps.ver.outputs.version }}
          target_commitish: ${{ github.sha }}
          name: ${{ steps.ver.outputs.version }}
          generate_release_notes: true
          files: |
            FileRise-${{ steps.ver.outputs.version }}.zip