# ACDL issue-to-contract workflow (Phase 04 implementation).
#
# Trigger: a new Issue is opened in acdl-contracts. The workflow runs
# l3b_agent_stub.py (checked out from the `acdl` repo, pinned to
# @milestone/v1.0-initial) to map the Issue body to a contract.yaml, commits
# the contract to a new branch `contract/<issue-number>` on acdl-contracts
# via the Gitea file-contents API, closes the Issue with a comment, and
# dispatches the main pipeline in the `acdl` repo via the workflow_dispatch
# API (D-014; Gitea Actions does not support repository_dispatch).
#
# Cross-repo trigger (D-014):
#   The final step POSTs to
#     /api/v1/repos/continuous-intelligence/acdl/actions/workflows/pipeline.yml/dispatches
#   with body {"ref": "milestone/v1.0-initial",
#              "inputs": {"contract-ref": "contract/<issue-number>"}}.
#
# Branch-pin rule (ARCHITECTURE.md):
#   The `acdl` repo's default branch is `milestone/v1.0-initial`, so the
#   checkout step pins `ref: milestone/v1.0-initial`. The pipeline dispatch
#   also pins `ref: milestone/v1.0-initial` (the workflow file lives on
#   that branch). The new `contract/<n>` branch is created on acdl-contracts
#   (whose default branch is `main`, per D-015).
#
# File-contents POST with `new_branch` (D-030):
#   The POST to /repos/.../contents/contract.yaml includes
#   `new_branch: contract/<n>`, which tells Gitea to create the file on a
#   NEW branch off the current head of `branch: main` instead of committing
#   directly to main. This avoids a separate branch-create + commit round
#   trip.
name: issue-to-contract

"on":
  issues:
    types: [opened]

jobs:
  parse-and-trigger:
    runs-on: ubuntu-latest
    steps:
      - name: "Checkout acdl (pinned to milestone/v1.0-initial for l3b_agent_stub.py)"
        uses: actions/checkout@v4
        with:
          repository: continuous-intelligence/acdl
          ref: milestone/v1.0-initial
          token: ${{ secrets.GITEA_TOKEN }}

      - name: "Parse Issue body into contract.yaml"
        env:
          ISSUE_BODY: ${{ gitea.event.issue.body }}
        run: |
          # Pass the Issue body via an env var to avoid shell injection from
          # arbitrary Issue text. l3b_agent_stub.py reads argv[1]; we pass
          # the env var quoted so no metacharacter interpretation happens.
          python3 scripts/l3b_agent_stub.py "$ISSUE_BODY" -o contract.yaml
          echo "--- generated contract.yaml ---"
          cat contract.yaml

      - name: "Commit contract.yaml to new branch contract/${{ gitea.event.issue.number }} on acdl-contracts"
        env:
          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
        run: |
          set -euo pipefail
          STACK=$(python3 -c 'import yaml; print(yaml.safe_load(open("contract.yaml"))["stack"])')
          ISSUE_NUMBER="${{ gitea.event.issue.number }}"
          BRANCH="contract/${ISSUE_NUMBER}"
          HOST="https://git.cloudinit.dev"
          API="${HOST}/api/v1/repos/continuous-intelligence/acdl-contracts/contents/contract.yaml"
          B64=$(base64 -w 0 contract.yaml)
          BODY=$(python3 -c "
          import json
          print(json.dumps({
              'content': '${B64}',
              'message': 'l3b: contract for issue #${ISSUE_NUMBER}',
              'branch': 'main',
              'new_branch': '${BRANCH}'
          }))
          ")
          STATUS=$(curl -sS -o /tmp/contract_post.json -w "%{http_code}" \
            -X POST \
            -H "Authorization: token ${GITEA_TOKEN}" \
            -H "Content-Type: application/json" \
            -d "$BODY" \
            "$API")
          echo "POST contract.yaml -> HTTP ${STATUS}"
          cat /tmp/contract_post.json || true
          case "$STATUS" in
            201) echo "contract.yaml committed on branch ${BRANCH}" ;;
            *) echo "ERROR: file-contents POST failed (HTTP ${STATUS})" >&2; exit 1 ;;
          esac
          echo "STACK=${STACK}" >> "$GITHUB_ENV"
          echo "BRANCH=${BRANCH}" >> "$GITHUB_ENV"

      - name: "Comment on Issue + close it"
        env:
          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
        run: |
          set -euo pipefail
          ISSUE_NUMBER="${{ gitea.event.issue.number }}"
          HOST="https://git.cloudinit.dev"
          ISSUES_API="${HOST}/api/v1/repos/continuous-intelligence/acdl-contracts/issues/${ISSUE_NUMBER}"
          COMMENT_BODY=$(python3 -c "
          import json
          print(json.dumps({'body': 'Generated contract.yaml for stack \`' + '${STACK}' + '\` on branch \`' + '${BRANCH}' + '\`. Pipeline dispatched.'}))
          ")
          curl -sS -o /tmp/comment.json -w "comment HTTP %{http_code}\n" \
            -X POST \
            -H "Authorization: token ${GITEA_TOKEN}" \
            -H "Content-Type: application/json" \
            -d "$COMMENT_BODY" \
            "${ISSUES_API}/comments"
          CLOSE_BODY='{"state":"closed"}'
          curl -sS -o /tmp/close.json -w "close HTTP %{http_code}\n" \
            -X PATCH \
            -H "Authorization: token ${GITEA_TOKEN}" \
            -H "Content-Type: application/json" \
            -d "$CLOSE_BODY" \
            "${ISSUES_API}"

      - name: "Dispatch the pipeline on acdl (contract-ref = contract/${{ gitea.event.issue.number }})"
        env:
          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
        run: |
          set -euo pipefail
          ISSUE_NUMBER="${{ gitea.event.issue.number }}"
          HOST="https://git.cloudinit.dev"
          DISPATCH_URL="${HOST}/api/v1/repos/continuous-intelligence/acdl/actions/workflows/pipeline.yml/dispatches"
          BODY=$(python3 -c "
          import json
          print(json.dumps({
              'ref': 'milestone/v1.0-initial',
              'inputs': {'contract-ref': 'contract/${ISSUE_NUMBER}'}
          }))
          ")
          STATUS=$(curl -sS -o /tmp/dispatch.json -w "%{http_code}" \
            -X POST \
            -H "Authorization: token ${GITEA_TOKEN}" \
            -H "Content-Type: application/json" \
            -d "$BODY" \
            "$DISPATCH_URL")
          echo "pipeline dispatch -> HTTP ${STATUS}"
          cat /tmp/dispatch.json || true
          case "$STATUS" in
            201|202|204) echo "pipeline dispatched (contract-ref=contract/${ISSUE_NUMBER})" ;;
            *) echo "ERROR: pipeline dispatch failed (HTTP ${STATUS})" >&2; exit 1 ;;
          esac