on:
  #This workflow is only triggered by the ok to test command dispatch
  repository_dispatch:
      types: [ ci-merge-check-command ]
    
jobs:
   ci-merge-check:
    runs-on: ubuntu-latest
    steps:
      # This step creates a comment on the PR with a link to this workflow run.
      - name: Add a comment on the PR with link to workflow run
        uses: peter-evans/create-or-update-comment@v2
        with:
          issue-number: ${{ github.event.client_payload.pull_request.number }}
          body: |
            Merge check is running at: <${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}>
            PR: ${{ github.event.client_payload.pull_request.number }}

      - name: Find the latest workflow run comment
        uses: peter-evans/find-comment@v2
        id: find-comment
        with:
          issue-number: ${{ github.event.client_payload.pull_request.number }}
          body-includes: 'Appsmith External Integration Test Workflow'
          comment-author: github-actions[bot]
          direction: last
      
      - name: Get the workflow run_id
        id: workflow
        run: |
          echo "run_id=$(echo '${{ steps.find-comment.outputs.comment-body }}' | grep -o 'runs/[0-9]\+' | cut -d/ -f2)" >> $GITHUB_OUTPUT
      
      - name: Get ci-test-result status from the run_id
        id: ci_test_result_status
        run: |
          run_status=`curl -s -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" https://api.github.com/repos/appsmithorg/appsmith/actions/runs/${{steps.workflow.outputs.run_id}}/jobs?per_page=100`
          echo "ci_test_result=`echo $run_status | jq -r '[ .jobs[] | select (select(.name | contains("ci-test-result")) | .conclusion | contains("failure"))] | length'`" >> $GITHUB_OUTPUT                                    
          echo "ci_test_status=`echo $run_status | jq -r '[ .jobs[] | select (select(.name | contains("ci-test ")) | .conclusion | contains("failure"))] | length'`" >> $GITHUB_OUTPUT
          echo "perf_test_status=`echo $run_status | jq -r '[ .jobs[] | select (select(.name | contains("perf-test")) | .conclusion | contains("failure"))] | length'`" >> $GITHUB_OUTPUT

      - name: get status-checks from pr
        id: pr_status_check
        run: |
          status_link="https://api.github.com/repos/appsmithorg/appsmith/statuses/${{github.event.client_payload.pull_request.head.sha}}"
          echo "merge_freeze_status=`curl -s -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" $status_link | jq -r '[.[] | select( select( .context | contains("mergefreeze")) | .state | contains("success") | not)] | length'`" >> $GITHUB_OUTPUT

      - name: get status-checks from check suite
        id: suite_status_check
        run: |
          check_runs_link="https://api.github.com/repos/appsmithorg/appsmith/commits/${{github.event.client_payload.pull_request.head.sha}}/check-runs"
          check_run_result=`curl -s -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" $check_runs_link`
          echo "test_plan_approval_status=`echo $check_run_result | jq -r '[[.check_runs[]|select(.name | contains("Test Plan Approved"))][0] | select( .conclusion | contains("success") | not)] | length'`" >> $GITHUB_OUTPUT
          echo "ci_test_available=`echo $check_run_result | jq -r '[.check_runs[] | select(.name | contains("ci-test-result"))] | length'`" >> $GITHUB_OUTPUT

      - name: Verify all the checks
        id: verify_checks
        run: |
          if [ ${{ steps.ci_test_result_status.outputs.ci_test_result }} == 1 ]; then
            if [ ${{ steps.ci_test_result_status.outputs.ci_test_status }} -gt 0 ]; then
              echo "msg=Looks like there are some Cypress failures. Can't Merge." >> $GITHUB_OUTPUT
              exit 1
            elif [ ${{ steps.ci_test_result_status.outputs.perf_test_status }} -gt 0 ]; then
              echo "msg=Looks like Perf-Tests failed. Contact perf team to get their confirmation. Can't Merge." >> $GITHUB_OUTPUT
              exit 1
            fi
          elif [ ${{ steps.suite_status_check.outputs.ci_test_available }} == 0 ]; then
            echo "msg=Looks like you forgot to run /ok-to-test on the latest commit. Can't Merge." >> $GITHUB_OUTPUT
            exit 1
          elif [ ${{ steps.pr_status_check.outputs.merge_freeze_status }} != 0 ]; then
            echo "msg=There's merge freeze. Can't Merge, please try after merge-freeze is lifted." >> $GITHUB_OUTPUT
            exit 1
          elif [ ${{ steps.suite_status_check.outputs.test_plan_approval_status }} == 1 ]; then
            echo "msg=Either get 'Test Plan Approved' or 'skip-testPlan' added and try again!" >> $GITHUB_OUTPUT
            exit 1
          elif [ ${{ steps.suite_status_check.outputs.test_plan_approval_status }} == 0 ]; then
            echo "msg=Hurray!🎉 Proceeding to Merge!!!" >> $GITHUB_OUTPUT
            exit 0
          else
            echo "msg=Some checks have failed. Can't merge." >> $GITHUB_OUTPUT
            exit 1
          fi

      - name: Add a comment on the PR after all checks
        if: always() 
        uses: peter-evans/create-or-update-comment@v2
        with:
          issue-number: ${{ github.event.client_payload.pull_request.number }}
          body: |
            ${{steps.verify_checks.outputs.msg}}

      - name: Auto merge if above checks are success and have 1 approval
        if: success()
        id: automerge
        uses: "pascalgn/automerge-action@v0.15.5"
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          PULL_REQUEST: ${{ github.event.client_payload.pull_request.number }}
          MERGE_REQUIRED_APPROVALS: 1
          MERGE_LABELS: ""
          UPDATE_LABELS: ""
          MERGE_READY_STATE: "clean,has_hooks,unknown,unstable,blocked"
          LOG: "TRACE"

      - name: Add comment once merge is success-full
        if: steps.automerge.outputs.mergeResult == 'merged'
        uses: peter-evans/create-or-update-comment@v2
        with:
          issue-number: ${{ github.event.client_payload.pull_request.number }}
          body: |
            Pull request ${{ steps.automerge.outputs.pullRequestNumber }} Auto-merged!

      - name: Comment if it is not merged
        if: steps.automerge.outputs.mergeResult != 'merged'
        uses: peter-evans/create-or-update-comment@v2
        with:
          issue-number: ${{ github.event.client_payload.pull_request.number }}
          body: |
            Auto merge has been failed. Probably for the following reasons:
            1. The minimum approval requirement has not been met.
            2. There might be some merge conflicts.
            3. There are some failed checks.

            Please ask someone with merge access to review and merge.