update-version-and-create-tag.yml

name: Update Version File and Create Tag

on:
  push:
    branches:
      - main  # Monitor the main branch

permissions:
  contents: write  # Ensure the workflow has write permissions

jobs:
  update-version:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0  # Fetch all history to include tags

      - name: Set up Git
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"

      - name: Get the latest tag
        id: get_latest_tag
        run: |
          latest_tag=$(git describe --tags --abbrev=0 2>/dev/null || echo "v0.0.0")
          echo "Latest tag is: $latest_tag"
          echo "tag=$latest_tag" >> $GITHUB_ENV  # Save the latest tag to environment file

      - name: Increment patch version
        id: increment_version
        run: |
          IFS='.' read -r major minor patch <<<"${{ env.tag#v }}"
          new_patch=$((patch + 1))
          new_tag="v${major}.${minor}.${new_patch}"
          echo "New tag is: $new_tag"
          echo "new_tag=$new_tag" >> $GITHUB_ENV  # Save the new tag to environment file

      - name: Update version.go file
        run: |
          commit_hash=$(git rev-parse --short HEAD)
          echo "package main" > version.go
          echo "" >> version.go
          echo "var version = \"${{ env.new_tag }}-${commit_hash}\"" >> version.go

      - name: Commit changes
        run: |
          git add version.go
          git commit -m "Update version to ${{ env.new_tag }} and commit $commit_hash"

      - name: Push changes
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}  # Use GITHUB_TOKEN to authenticate the push
        run: |
          git push origin main  # Push changes to the main branch

      - name: Create a new tag
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          git tag ${{ env.new_tag }}
          git push origin ${{ env.new_tag }}  # Push the new tag