name: Plugin update check
run-name: ${{ inputs.repo }} update check

on:
  workflow_dispatch:
    inputs:
      repo:
        type: string
        description: 'The owner and repository name as per the github.repository context property.'
        required: true
      plugin_branch:
        type: string
        description: 'The name of the plugin branch.'
        required: true

jobs:
  plugin-update-check:
    runs-on: ubuntu-latest
    env:
      PLUGIN_REPO: "${{inputs.repo}}"
      PLUGIN_BRANCH: "${{inputs.plugin_branch}}"
      VAULT_BRANCH: "auto-plugin-update/${{inputs.repo}}/${{inputs.plugin_branch}}"
      RUN_ID: "${{github.run_id}}"
    steps:
      - run: echo "Branch $PLUGIN_BRANCH of $PLUGIN_REPO"
      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
        with:
          # We don't use the default token so that checks are executed on the resulting PR
          # https://docs.github.com/en/actions/using-workflows/triggering-a-workflow#triggering-a-workflow-from-a-workflow
          token: ${{ secrets.ELEVATED_GITHUB_TOKEN }}

      - uses: actions/setup-go@0a12ed9d6a96ab950c8f026ed9f722fe0da7ef32 # v5.0.2
        with:
          cache: false # save cache space for vault builds: https://github.com/hashicorp/vault/pull/21764
          go-version-file: .go-version

      - name: update plugin
        run: |
          go get "github.com/$PLUGIN_REPO@$PLUGIN_BRANCH"
          go mod tidy

      - name: detect changes
        id: changes
        run: |
          echo "count=$(git status --porcelain=v1 2>/dev/null | wc -l)" >> "$GITHUB_OUTPUT"

      - name: commit/push
        if: steps.changes.outputs.count > 0
        run: |
          git config user.name hc-github-team-secure-vault-ecosystem
          git config user.email hc-github-team-secure-vault-ecosystem@users.noreply.github.com
          git add .
          git commit -m "Automated dependency upgrades"
          git push -f origin ${{ github.ref_name }}:"$VAULT_BRANCH"

      - name: Open pull request if needed
        id: pr
        if: steps.changes.outputs.count > 0
        env:
          GITHUB_TOKEN: ${{secrets.ELEVATED_GITHUB_TOKEN}}
        # Only open a PR if the branch is not attached to an existing one
        run: |
          PR=$(gh pr list --head "$VAULT_BRANCH" --json number -q '.[0].number')

          if [ -z "$PR" ]; then
            gh pr create \
            --head "$VAULT_BRANCH" \
            --title "[DO NOT MERGE]: $PLUGIN_REPO Automated plugin update check" \
            --body "Updates $PLUGIN_REPO to verify vault CI. Full log: https://github.com/hashicorp/vault/actions/runs/$RUN_ID"
          else
            echo "Pull request already exists, won't create a new one."
          fi

          echo "vault_pr_num=$(gh pr list --head "$VAULT_BRANCH" --json number -q '.[0].number')" >> "$GITHUB_OUTPUT"
          echo "vault_pr_url=$(gh pr list --head "$VAULT_BRANCH" --json url -q '.[0].url')" >> "$GITHUB_OUTPUT"

      - name: Add labels to Vault CI check PR
        if: steps.changes.outputs.count > 0
        env:
          # this is a different token to the one we have been using that should
          # allow us to add labels
          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
        continue-on-error: true
        run: |
          if [ -z "${{ steps.pr.outputs.vault_pr_url }}" ]; then
            echo "error: no vault PR found"
            exit 1
          fi

          gh pr edit "${{ steps.pr.outputs.vault_pr_num }}" \
            --add-label "dependencies,pr/no-changelog,pr/no-milestone" \
            --repo hashicorp/vault

      - name: Comment on plugin PR
        if: steps.changes.outputs.count > 0
        env:
          GITHUB_TOKEN: ${{secrets.ELEVATED_GITHUB_TOKEN}}
        run: |
          # get Plugin PR number
          plugin_pr_num=$(gh pr list --head "$PLUGIN_BRANCH" --json number --repo "$PLUGIN_REPO" -q '.[0].number')

          if [ -z "$plugin_pr_num" ]; then
            echo "error: no plugin PR found"
            exit 1
          fi

          if [ -z "${{ steps.pr.outputs.vault_pr_url }}" ]; then
            echo "error: no vault PR found"
            exit 1
          fi

          # make a comment on the plugin repo's PR
          gh pr comment "$plugin_pr_num" \
            --body "Vault CI check PR: ${{ steps.pr.outputs.vault_pr_url }}" \
            --repo "$PLUGIN_REPO"