publish.yml

name: Publish

on:
  push:
    branches:
      - main
    tags:
      - v[0-9]+.[0-9]+.[0-9]+

jobs:
  publish:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Set up Rust
        uses: dtolnay/rust-toolchain@stable

      - name: Check if version is already published
        run: |
          # Get the workspace package info (not dependencies)
          WORKSPACE_ROOT=$(cargo metadata --format-version=1 | jq -r '.workspace_root')
          PACKAGE_NAME=$(cargo metadata --format-version=1 | jq -r --arg root "$WORKSPACE_ROOT" '.packages[] | select(.manifest_path | startswith($root)) | .name')
          PACKAGE_VERSION=$(cargo metadata --format-version=1 | jq -r --arg root "$WORKSPACE_ROOT" '.packages[] | select(.manifest_path | startswith($root)) | .version')
          
          echo "Checking if $PACKAGE_NAME version $PACKAGE_VERSION can be published..."
          
          # Use cargo publish --dry-run to check if we can publish this version
          # This is the most reliable method as it uses the same logic as actual publish
          DRY_RUN_OUTPUT=$(cargo publish --dry-run --allow-dirty 2>&1)
          
          if echo "$DRY_RUN_OUTPUT" | grep -q "already exists on crates.io index"; then
            echo "Version $PACKAGE_VERSION of $PACKAGE_NAME already exists on crates.io. Skipping publish."
            exit 0
          else
            echo "Version $PACKAGE_VERSION of $PACKAGE_NAME can be published. Proceeding with publish."
          fi

      - name: Publish to crates.io
        run: cargo publish --allow-dirty
        env:
          CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}