# .gitea/workflows/deploy-keyless-verify.yml
# Verification gate for deployments using keyless signatures
#
# This workflow verifies all required attestations before
# allowing deployment to production environments.
#
# Dogfooding the StellaOps keyless verification feature.

name: Deployment Verification Gate

on:
  workflow_dispatch:
    inputs:
      image:
        description: 'Image to deploy (with digest)'
        required: true
        type: string
      environment:
        description: 'Target environment'
        required: true
        type: choice
        options:
          - staging
          - production
      require_sbom:
        description: 'Require SBOM attestation'
        required: false
        default: true
        type: boolean
      require_verdict:
        description: 'Require policy verdict attestation'
        required: false
        default: true
        type: boolean

env:
  STELLAOPS_URL: "https://api.stella-ops.internal"

jobs:
  pre-flight:
    runs-on: ubuntu-22.04
    outputs:
      identity-pattern: ${{ steps.config.outputs.identity-pattern }}

    steps:
      - name: Configure Identity Constraints
        id: config
        run: |
          ENV="${{ github.event.inputs.environment }}"

          if [[ "$ENV" == "production" ]]; then
            # Production: only allow signed releases from main or tags
            PATTERN="stella-ops.org/git.stella-ops.org:ref:refs/(heads/main|tags/v.*)"
          else
            # Staging: allow any branch
            PATTERN="stella-ops.org/git.stella-ops.org:ref:refs/heads/.*"
          fi

          echo "identity-pattern=${PATTERN}" >> $GITHUB_OUTPUT
          echo "Using identity pattern: ${PATTERN}"

  verify-attestations:
    needs: pre-flight
    runs-on: ubuntu-22.04
    permissions:
      contents: read

    outputs:
      verified: ${{ steps.verify.outputs.verified }}
      attestation-count: ${{ steps.verify.outputs.count }}

    steps:
      - name: Install StellaOps CLI
        run: |
          curl -sL https://get.stella-ops.org/cli | sh
          echo "$HOME/.stellaops/bin" >> $GITHUB_PATH

      - name: Verify All Attestations
        id: verify
        run: |
          set -euo pipefail

          IMAGE="${{ github.event.inputs.image }}"
          IDENTITY="${{ needs.pre-flight.outputs.identity-pattern }}"
          ISSUER="https://git.stella-ops.org"

          VERIFY_ARGS=(
            --artifact "${IMAGE}"
            --certificate-identity "${IDENTITY}"
            --certificate-oidc-issuer "${ISSUER}"
            --require-rekor
            --output json
          )

          if [[ "${{ github.event.inputs.require_sbom }}" == "true" ]]; then
            VERIFY_ARGS+=(--require-sbom)
          fi

          if [[ "${{ github.event.inputs.require_verdict }}" == "true" ]]; then
            VERIFY_ARGS+=(--require-verdict)
          fi

          echo "Verifying: ${IMAGE}"
          echo "Identity: ${IDENTITY}"
          echo "Issuer: ${ISSUER}"

          RESULT=$(stella attest verify "${VERIFY_ARGS[@]}" 2>&1)
          echo "$RESULT" | jq .

          VERIFIED=$(echo "$RESULT" | jq -r '.valid')
          COUNT=$(echo "$RESULT" | jq -r '.attestationCount')

          echo "verified=${VERIFIED}" >> $GITHUB_OUTPUT
          echo "count=${COUNT}" >> $GITHUB_OUTPUT

          if [[ "$VERIFIED" != "true" ]]; then
            echo "::error::Verification failed"
            echo "$RESULT" | jq -r '.issues[]? | "::error::\(.code): \(.message)"'
            exit 1
          fi

          echo "Verification passed with ${COUNT} attestations"

  verify-provenance:
    needs: pre-flight
    runs-on: ubuntu-22.04
    permissions:
      contents: read

    outputs:
      valid: ${{ steps.verify.outputs.valid }}

    steps:
      - name: Install StellaOps CLI
        run: |
          curl -sL https://get.stella-ops.org/cli | sh
          echo "$HOME/.stellaops/bin" >> $GITHUB_PATH

      - name: Verify Build Provenance
        id: verify
        run: |
          IMAGE="${{ github.event.inputs.image }}"

          echo "Verifying provenance for: ${IMAGE}"

          RESULT=$(stella provenance verify \
            --artifact "${IMAGE}" \
            --require-source-repo "stella-ops.org/git.stella-ops.org" \
            --output json)

          echo "$RESULT" | jq .

          VALID=$(echo "$RESULT" | jq -r '.valid')
          echo "valid=${VALID}" >> $GITHUB_OUTPUT

          if [[ "$VALID" != "true" ]]; then
            echo "::error::Provenance verification failed"
            exit 1
          fi

  create-audit-entry:
    needs: [verify-attestations, verify-provenance]
    runs-on: ubuntu-22.04

    steps:
      - name: Install StellaOps CLI
        run: |
          curl -sL https://get.stella-ops.org/cli | sh
          echo "$HOME/.stellaops/bin" >> $GITHUB_PATH

      - name: Log Deployment Verification
        run: |
          stella audit log \
            --event "deployment-verification" \
            --artifact "${{ github.event.inputs.image }}" \
            --environment "${{ github.event.inputs.environment }}" \
            --verified true \
            --attestations "${{ needs.verify-attestations.outputs.attestation-count }}" \
            --provenance-valid "${{ needs.verify-provenance.outputs.valid }}" \
            --actor "${{ github.actor }}" \
            --workflow "${{ github.workflow }}" \
            --run-id "${{ github.run_id }}"

  approve-deployment:
    needs: [verify-attestations, verify-provenance, create-audit-entry]
    runs-on: ubuntu-22.04
    environment: ${{ github.event.inputs.environment }}

    steps:
      - name: Deployment Approved
        run: |
          cat >> $GITHUB_STEP_SUMMARY << EOF
          ## Deployment Approved

          | Field | Value |
          |-------|-------|
          | **Image** | \`${{ github.event.inputs.image }}\` |
          | **Environment** | ${{ github.event.inputs.environment }} |
          | **Attestations** | ${{ needs.verify-attestations.outputs.attestation-count }} |
          | **Provenance Valid** | ${{ needs.verify-provenance.outputs.valid }} |
          | **Approved By** | @${{ github.actor }} |

          Deployment can now proceed.
          EOF