name: Auto-PR feature -> playtest and merge
on:
  push:
    branches:
      - "feature-**"
jobs:
  pr_merge:
    runs-on: ubuntu-latest
    container:
      image: node:20-bullseye
    defaults:
      run:
        shell: bash
    env:
      # Change if your instance URL differs
      GITEA_BASE_URL: https://git.code.svchub.com
      PLAYTEST_BRANCH: playtest

      # Provide this as a Gitea Actions secret in the repo (Settings -> Actions -> Secrets)
      # Must have rights to create PRs, merge PRs, and delete branches.
      GITEA_TOKEN: ${{ vars.GIT_TOKEN }}

      # Repo + branch from the event context (GitHub-compatible in Gitea Actions)
      REPO: ${{ github.repository }}     # "owner/name"
      BRANCH: ${{ github.ref_name }}      # e.g. "feature/issue-123"
    steps:
      - name: Install prerequisites (rsync, jq, git)
        run: |
          set -eu
          export DEBIAN_FRONTEND=noninteractive
          if command -v apt-get >/dev/null 2>&1; then
            apt-get update -y
            apt-get install -y rsync jq git ca-certificates curl
          elif command -v apk >/dev/null 2>&1; then
            apk add --no-cache rsync jq git ca-certificates curl
          elif command -v dnf >/dev/null 2>&1; then
            dnf install -y rsync jq git ca-certificates curl
          elif command -v yum >/dev/null 2>&1; then
            yum install -y rsync jq git ca-certificates curl
          else
            echo "Unsupported base image"; exit 1
          fi

      - name: Create PR (if needed), merge with merge-commit, delete branch
        run: |
          set -euo pipefail

          : "${GITEA_TOKEN:?Missing secrets.GITEA_TOKEN}"
          : "${REPO:?Missing repo context}"
          : "${BRANCH:?Missing branch context}"

          OWNER="${REPO%%/*}"
          NAME="${REPO##*/}"

          API="${GITEA_BASE_URL%/}/api/v1"
          AUTH="Authorization: token ${GITEA_TOKEN}"

          FEATURE_BRANCH="${BRANCH}"
          BASE_BRANCH="${PLAYTEST_BRANCH}"

          echo "[INFO] Repo: ${OWNER}/${NAME}"
          echo "[INFO] Feature branch: ${FEATURE_BRANCH}"
          echo "[INFO] Base branch: ${BASE_BRANCH}"

          # 1) Create PR from feature branch to playtest
          echo "[INFO] Creating PR from ${FEATURE_BRANCH} → ${BASE_BRANCH}"
          
          PR_PAYLOAD="$(jq -n \
            --arg title "Auto-merge ${FEATURE_BRANCH} -> ${BASE_BRANCH}" \
            --arg head "${FEATURE_BRANCH}" \
            --arg base "${BASE_BRANCH}" \
            --arg body "Automated PR created on push to ${FEATURE_BRANCH}" \
            '{title:$title, head:$head, base:$base, body:$body}')"

          CREATE_URL="${API}/repos/${OWNER}/${NAME}/pulls"
          CREATE_HTTP="$(curl -sS -o /tmp/pr_create.json -w "%{http_code}" \
            -H "Content-Type: application/json" -H "$AUTH" \
            -X POST -d "$PR_PAYLOAD" \
            "$CREATE_URL" || true)"

          if [ "$CREATE_HTTP" != "201" ]; then
            echo "[ERROR] PR create failed (HTTP $CREATE_HTTP):"
            cat /tmp/pr_create.json || true
            exit 1
          fi

          PR_NUMBER="$(jq -r '.number' /tmp/pr_create.json)"
          echo "[INFO] Created PR #${PR_NUMBER}"

          # 2) Merge PR using a merge commit ("Do": "merge")
          # Branch deletion is handled separately in step 4 with safety checks
          MERGE_PAYLOAD="$(jq -n \
            --arg do "merge" \
            --arg title "Merge ${FEATURE_BRANCH} into ${BASE_BRANCH}" \
            --arg message "Merged automatically from ${FEATURE_BRANCH}" \
            '{Do:$do, MergeTitleField:$title, MergeMessageField:$message}')"

          MERGE_URL="${API}/repos/${OWNER}/${NAME}/pulls/${PR_NUMBER}/merge"
          MERGE_HTTP="$(curl -sS -o /tmp/pr_merge.json -w "%{http_code}" \
            -H "Content-Type: application/json" -H "$AUTH" \
            -X POST -d "$MERGE_PAYLOAD" \
            "$MERGE_URL" || true)"

          if [ "$MERGE_HTTP" != "200" ] && [ "$MERGE_HTTP" != "201" ] && [ "$MERGE_HTTP" != "204" ]; then
            echo "[ERROR] PR merge failed (HTTP $MERGE_HTTP):"
            cat /tmp/pr_merge.json || true
            exit 1
          fi
          echo "[INFO] PR #${PR_NUMBER} merged."

          # 4) Ensure branch is deleted (in case delete-after-merge is disabled)
          # Safety check: only delete if branch name starts with "feature-" or "bugfix-"
          if [[ "${FEATURE_BRANCH}" == feature-* ]] || [[ "${FEATURE_BRANCH}" == bugfix-* ]]; then
            echo "[INFO] Deleting temporary branch: ${FEATURE_BRANCH}"
            DEL_URL="${API}/repos/${OWNER}/${NAME}/branches/${FEATURE_BRANCH}"
            DEL_HTTP="$(curl -sS -o /tmp/branch_del.json -w "%{http_code}" \
              -H "$AUTH" -X DELETE \
              "$DEL_URL" || true)"

            if [ "$DEL_HTTP" = "204" ] || [ "$DEL_HTTP" = "200" ]; then
              echo "[INFO] Branch ${FEATURE_BRANCH} deleted."
            else
              echo "[WARN] Branch delete returned HTTP $DEL_HTTP (may already be deleted or not permitted)."
              cat /tmp/branch_del.json || true
            fi
          else
            echo "[WARN] Branch ${FEATURE_BRANCH} does not match feature-* pattern. Skipping deletion for safety."
          fi