name: GitOps Dispatch
on:
  workflow_call:
    inputs:
      env_json:
        required: true
        type: string
      version:
        required: true
        type: string
      GITOPS_FILE:
        required: true
        type: string
      GITOPS_YQ_TPL:
        required: true
        type: string
      GITOPS_REPO:
        required: true
        type: string
    secrets:
      GITOPS_DISPATCH_TOKEN:
        required: true
    outputs:
      summary:
        description: "Pipe-format: component|version|status|commit_sha|repo"
        value: ${{ jobs.dispatch.outputs.summary }}

env:
  GITOPS_VERSION: ${{ inputs.version }}
  GITOPS_FILE: ${{ inputs.GITOPS_FILE }}
  GITOPS_YQ_TPL: ${{ inputs.GITOPS_YQ_TPL }}
  GITOPS_REPO: ${{ inputs.GITOPS_REPO }}
  GITOPS_SOURCE_REPO: ${{ github.repository }}
  GITOPS_SOURCE_COMMIT: ${{ github.sha }}
  GITEA_API_URL: ${{ fromJson(inputs.env_json).GITEA_API_URL }}
  GITOPS_TAG_PREFIX: ${{ fromJson(inputs.env_json).GIT_TAG_PREFIX || '' }}
  GITOPS_WORKFLOW: gitops-service.yaml
  GITOPS_DISPATCH_TIMEOUT: 30

jobs:
  dispatch:
    runs-on: ubuntu-latest
    outputs:
      summary: ${{ steps.summary.outputs.GITOPS_SUMMARY }}
    steps:
      - name: Generate dispatch_id
        id: gen
        run: |
          ID=$(date +%s | md5sum | head -c 8)
          echo "dispatch_id=$ID" >> "$GITHUB_OUTPUT"

      - name: Dispatch to GitOps repo
        env:
          GITEA_TOKEN: ${{ secrets.GITOPS_DISPATCH_TOKEN }}
        run: |
          INPUTS=$(jq -nc \
            --arg dispatch_id "${{ steps.gen.outputs.dispatch_id }}" \
            --arg file "$GITOPS_FILE" \
            --arg yq_tpl "$GITOPS_YQ_TPL" \
            --arg version "$GITOPS_VERSION" \
            --arg source_repo "$GITOPS_SOURCE_REPO" \
            --arg source_commit "$GITOPS_SOURCE_COMMIT" \
            --arg git_tag_prefix "${GITOPS_TAG_PREFIX:-}" \
            '{dispatch_id: $dispatch_id, file: $file, yq_tpl: $yq_tpl, version: $version, source_repo: $source_repo, source_commit: $source_commit, git_tag_prefix: $git_tag_prefix}')
          curl -s -X POST \
            "${GITEA_API_URL}/api/v1/repos/${GITOPS_REPO}/actions/workflows/${GITOPS_WORKFLOW}/dispatches" \
            -H "Authorization: token $GITEA_TOKEN" \
            -H "Content-Type: application/json" \
            -d "$(jq -nc --arg ref "main" --argjson inputs "$INPUTS" '{ref: "main", inputs: $inputs}')"

      - uses: actions/checkout@v4
        with:
          repository: niko/gitea-ci-library
          path: .ci

      - name: Poll for completion
        id: poll
        env:
          GITEA_TOKEN: ${{ secrets.GITOPS_DISPATCH_TOKEN }}
        run: |
          ID="${{ steps.gen.outputs.dispatch_id }}"
          TIMEOUT_MINUTES="${GITOPS_DISPATCH_TIMEOUT:-30}"
          POLL_INTERVAL=10
          START_TIME=$(date +%s)
          TIMEOUT_SECONDS=$((TIMEOUT_MINUTES * 60))

          echo "Polling for run with dispatch_id=$ID"

          while [ -z "$RUN_ID" ]; do
            NOW=$(date +%s)
            ELAPSED=$((NOW - START_TIME))
            if [ "$ELAPSED" -ge "$TIMEOUT_SECONDS" ]; then
              echo "ERROR: Timeout waiting for run to appear" >&2
              exit 124
            fi

            RUNS_RESP=$(curl -s --connect-timeout 5 --max-time 10 \
              "${GITEA_API_URL}/api/v1/repos/${GITOPS_REPO}/actions/runs?event=workflow_dispatch&limit=10" \
              -H "Authorization: token $GITEA_TOKEN")
            RUN_ID=$(echo "$RUNS_RESP" | jq -r --arg id "$ID" \
              '[.workflow_runs[] | select(.display_title | contains($id))] | .[0].id // empty')

            [ -z "$RUN_ID" ] && sleep "$POLL_INTERVAL"
          done

          echo "Run found: id=$RUN_ID"

          while true; do
            NOW=$(date +%s)
            ELAPSED=$((NOW - START_TIME))
            if [ "$ELAPSED" -ge "$TIMEOUT_SECONDS" ]; then
              echo "ERROR: Timeout waiting for completion" >&2
              exit 124
            fi

            RUN_RESP=$(curl -s --connect-timeout 5 --max-time 10 \
              "${GITEA_API_URL}/api/v1/repos/${GITOPS_REPO}/actions/runs/${RUN_ID}" \
              -H "Authorization: token $GITEA_TOKEN")
            STATUS=$(echo "$RUN_RESP" | jq -r '.status // "running"')
            CONCLUSION=$(echo "$RUN_RESP" | jq -r '.conclusion // ""')

            echo "  status=$STATUS conclusion=$CONCLUSION"

            if [ "$STATUS" = "completed" ]; then
              if [ "$CONCLUSION" = "success" ]; then
                echo "GitOps workflow completed successfully"

                # 1. List recent commits from GitOps repo
                COMMITS=$(curl -s --connect-timeout 5 --max-time 10 \
                  "${GITEA_API_URL}/api/v1/repos/${GITOPS_REPO}/commits?sha=main&limit=10" \
                  -H "Authorization: token $GITEA_TOKEN")

                # 2. Find commit by message: "gitops: update version to X.Y.Z"
                SEARCH_MSG="gitops: update version to ${GITOPS_VERSION}"
                GITOPS_COMMIT=$(echo "$COMMITS" | jq -r \
                  --arg msg "$SEARCH_MSG" \
                  '[.[] | select(.commit.message | contains($msg))] | .[0].sha // empty')

                # 3. If not found → fail
                if [ -z "$GITOPS_COMMIT" ]; then
                  echo "ERROR: no matching GitOps commit found for version ${GITOPS_VERSION}" >&2
                  exit 1
                fi

                echo "GITOPS_COMMIT=$GITOPS_COMMIT" >> "$GITHUB_OUTPUT"
                echo "$GITOPS_COMMIT" > /tmp/gitops-commit
                exit 0
              else
                echo "ERROR: GitOps workflow failed with conclusion=$CONCLUSION" >&2
                exit 1
              fi
            fi

            sleep "$POLL_INTERVAL"
          done

      - name: GitOps summary
        id: summary
        if: always()
        run: |
          STATUS="failure"
          GITOPS_SHA=""
          if [ -f /tmp/gitops-commit ]; then
            STATUS="success"
            GITOPS_SHA=$(cat /tmp/gitops-commit)
          fi
          COMPONENT="${GITOPS_TAG_PREFIX:-${GITOPS_FILE}}"
          echo "GITOPS_SUMMARY=${COMPONENT}|${GITOPS_VERSION}|${STATUS}|${GITOPS_SHA}|${GITOPS_REPO}" >> "$GITHUB_OUTPUT"

      - name: Set commit status
        if: success()
        env:
          GITEA_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          GITOPS_SHA=$(cat /tmp/gitops-commit)

          PREFIX="${GITOPS_TAG_PREFIX%/}"
          if [ -n "$PREFIX" ]; then
            CONTEXT="gitops/$(basename "${GITOPS_SOURCE_REPO}")/${PREFIX}"
            DESCRIPTION="GitOps: ${PREFIX} ${GITOPS_VERSION}"
          else
            CONTEXT="gitops/$(basename "${GITOPS_SOURCE_REPO}")"
            DESCRIPTION="GitOps: ${GITOPS_VERSION}"
          fi

          ROOT_REPO="${GITOPS_SOURCE_REPO}" ROOT_COMMIT="${GITOPS_SOURCE_COMMIT}" \
            bash .ci/scripts/report-status.sh success \
            "$DESCRIPTION" "$CONTEXT" "" \
            "${GITEA_API_URL}/${GITOPS_REPO}/commit/${GITOPS_SHA}"