update_go_modules.yml

name: Update Go Modules

on:
  schedule:
    - cron: '0 0 * * *' # Runs every day at midnight
  workflow_dispatch: # Allows manual triggering of the workflow

jobs:
  update_go_modules:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repository
        uses: actions/checkout@v2

      - name: Ensure running on main branch
        id: check_branch
        run: |
          if [ "${{ github.ref }}" != "refs/heads/main" ]; then
            echo "Not on main branch, exiting."
            exit 1
          fi

      - name: Set up Go
        uses: actions/setup-go@v2
        with:
          go-version: '^1.17'

      - name: Save current go.mod
        run: cp go.mod go.mod.bak

      - name: Get current Go version
        id: get_current_go_version
        run: |
          CURRENT_GO_VERSION=$(grep '^go ' go.mod | cut -d ' ' -f 2)
          echo "CURRENT_GO_VERSION=$CURRENT_GO_VERSION" >> $GITHUB_ENV

      - name: Get latest Go version
        id: get_latest_go_version
        run: |
          LATEST_GO_VERSION=$(go version | cut -d ' ' -f 3 | sed 's/go//')
          echo "LATEST_GO_VERSION=$LATEST_GO_VERSION" >> $GITHUB_ENV

      - name: Update Go version in go.mod if needed
        id: update_go_version
        run: |
          if [ "${{ env.CURRENT_GO_VERSION }}" != "${{ env.LATEST_GO_VERSION }}" ]; then
            sed -i "s/^go .*/go $LATEST_GO_VERSION/" go.mod
            echo "GO_VERSION_UPDATED=true" >> $GITHUB_ENV
          else
            echo "GO_VERSION_UPDATED=false" >> $GITHUB_ENV
          fi

      - name: Update Go modules
        run: |
          go get -u ./...
          go mod tidy

      - name: Get updated modules
        id: get_updated_modules
        run: |
          echo "Updated modules:" > updated_modules.txt
          go list -m -u all | awk 'NR>1' >> updated_modules.txt

      - name: Check for changes
        id: check_changes
        run: |
          if git diff --quiet; then
            echo "No changes in go.mod or go.sum"
            echo "exit_code=0" >> $GITHUB_ENV
          else
            echo "Changes found in go.mod or go.sum"
            git config --global user.name "github-actions[bot]"
            git config --global user.email "github-actions[bot]@users.noreply.github.com"
            TIMESTAMP=$(date +%Y%m%d%H%M%S)
            BRANCH_NAME="update-go-modules-$TIMESTAMP"
            git checkout -b $BRANCH_NAME
            git add go.mod go.sum
            git commit -m "Update Go modules and Go version to the latest version"
            git push --set-upstream origin $BRANCH_NAME
            echo "BRANCH_NAME=$BRANCH_NAME" >> $GITHUB_ENV
            echo "exit_code=1" >> $GITHUB_ENV
          fi

      - name: Generate PR body
        if: env.exit_code == '1'
        id: generate_pr_body
        run: |
          echo "# Updated Go Modules" > pr_body.md
          echo "" >> pr_body.md
          echo "The following Go modules were updated:" >> pr_body.md
          echo "" >> pr_body.md
          cat updated_modules.txt >> pr_body.md
          echo "" >> pr_body.md
          if [ "${{ env.GO_VERSION_UPDATED }}" == "true" ]; then
            echo "Go version updated from ${{ env.CURRENT_GO_VERSION }} to ${{ env.LATEST_GO_VERSION }}" >> pr_body.md
          fi
          pr_body=$(<pr_body.md)
          echo "::set-output name=pr_body::$pr_body"

      - name: Create Pull Request
        if: env.exit_code == '1'
        uses: peter-evans/create-pull-request@v3
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          commit-message: Update Go modules and Go version to the latest version
          branch: ${{ env.BRANCH_NAME }}
          base: main
          title: Update Go modules and Go version
          body: ${{ steps.generate_pr_body.outputs.pr_body }}
          labels: go-modules, automated-update