name: Add autobump

on:
  workflow_dispatch:
    inputs:
      description:
        description: Description for the package rule
        required: true
        type: string
      ecosystem:
        description: Ecosystem
        required: true
        type: choice
        options:
          - action
          - golang
          - bun-npm
      matchUpdateType:
        description: Update type to allow
        required: true
        type: choice
        default: major
        options:
          - major
          - minor
          - patch
      matchPackageName:
        description: Package name to allow autobump for
        required: true
        type: string
      matchNewValue:
        description: New value pattern (e.g. v7.* or v7.0.0)
        required: true
        type: string

jobs:
  allow-autobump:
    name: Allow autobump
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
        with:
          token: ${{ secrets.GITEA_TOKEN }}
      - uses: oven-sh/setup-bun@0c5077e51419868618aeaa5fe8019c62421857d6 # v2.2.0
        with:
          bun-version-file: ".bun-version"
      - run: bun install --frozen-lockfile
      - name: Add package rule
        id: rule
        env:
          DESCRIPTION: ${{ inputs.description }}
          ECOSYSTEM: ${{ inputs.ecosystem }}
          MATCH_UPDATE_TYPE: ${{ inputs.matchUpdateType }}
          MATCH_PACKAGE_NAME: ${{ inputs.matchPackageName }}
          MATCH_NEW_VALUE: ${{ inputs.matchNewValue }}
        run: |
          set -euo pipefail

          FILE="${ECOSYSTEM}.json"
          if [[ ! -f "${FILE}" ]]; then
            echo "::error::Config file ${FILE} does not exist"
            exit 1
          fi

          MATCH_MANAGERS="$(jq -nc --arg e "${ECOSYSTEM}" '{
            "action": ["github-actions"],
            "golang": ["gomod"],
            "helm": ["helm-values"],
            "k8s": ["kubernetes"],
            "bun-npm": ["npm", "bun"],
            "docker-compose": ["docker-compose"]
          }[$e]')"

          if [[ "${MATCH_MANAGERS}" == "null" || -z "${MATCH_MANAGERS}" ]]; then
            echo "::error::Unknown ecosystem: ${ECOSYSTEM}"
            exit 1
          fi

          if [[ -z "${DESCRIPTION}" ]]; then
            DESCRIPTION="Automerge ${MATCH_UPDATE_TYPE} updates for ${MATCH_PACKAGE_NAME} to ${MATCH_NEW_VALUE}"
          fi

          jq \
            --arg desc "${DESCRIPTION}" \
            --argjson managers "${MATCH_MANAGERS}" \
            --arg updateType "${MATCH_UPDATE_TYPE}" \
            --arg packageName "${MATCH_PACKAGE_NAME}" \
            --arg newValue "${MATCH_NEW_VALUE}" \
            '
            .packageRules = ((.packageRules // []) + [{
              description: $desc,
              matchManagers: $managers,
              matchUpdateTypes: [$updateType],
              matchPackageNames: [$packageName],
              matchNewValue: $newValue,
              automerge: true,
              platformAutomerge: true,
              automergeType: "pr",
              addLabels: ["automerge"]
            }])
            ' "${FILE}" > "${FILE}.tmp"
          mv "${FILE}.tmp" "${FILE}"

          SAFE_PKG="$(printf '%s' "${MATCH_PACKAGE_NAME}" | tr '/:' '--' | tr -cd '[:alnum:]._-')"
          SAFE_VAL="$(printf '%s' "${MATCH_NEW_VALUE}" | tr '/:*' '---' | tr -cd '[:alnum:]._-')"
          BRANCH="chore/allow-autobump-${ECOSYSTEM}-${SAFE_PKG}-${SAFE_VAL}"
          TITLE="feat(${ECOSYSTEM}): allow automerge of ${MATCH_PACKAGE_NAME} ${MATCH_NEW_VALUE}"

          {
            echo "file=${FILE}"
            echo "branch=${BRANCH}"
            echo "title=${TITLE}"
            echo "description=${DESCRIPTION}"
          } >> "${GITHUB_OUTPUT}"
      - run: bun run fmt
      - name: Create pull request
        env:
          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
          FILE: ${{ steps.rule.outputs.file }}
          BRANCH: ${{ steps.rule.outputs.branch }}
          TITLE: ${{ steps.rule.outputs.title }}
          DESCRIPTION: ${{ steps.rule.outputs.description }}
          SERVER_URL: ${{ github.server_url }}
          REPOSITORY: ${{ github.repository }}
          DEFAULT_BRANCH: ${{ github.event.repository.default_branch }}
        run: |
          set -euo pipefail

          git config user.name "gitea-actions"
          git config user.email "gitea-actions@noreply.local"

          git checkout -b "${BRANCH}"
          git add "${FILE}"
          git commit -m "${TITLE}"
          git push -u origin "HEAD:${BRANCH}"

          BODY="$(printf 'Allow Renovate to automerge updates matching:\n\n- **Ecosystem:** `%s`\n- **Package:** `%s`\n- **Update type:** `%s`\n- **New value:** `%s`\n\n%s\n' \
            "${{ inputs.ecosystem }}" \
            "${{ inputs.matchPackageName }}" \
            "${{ inputs.matchUpdateType }}" \
            "${{ inputs.matchNewValue }}" \
            "${DESCRIPTION}")"

          RESPONSE="$(curl -sfS -X POST \
            -H "Authorization: token ${GITEA_TOKEN}" \
            -H "Content-Type: application/json" \
            "${SERVER_URL}/api/v1/repos/${REPOSITORY}/pulls" \
            -d "$(jq -n \
              --arg title "${TITLE}" \
              --arg head "${BRANCH}" \
              --arg base "${DEFAULT_BRANCH}" \
              --arg body "${BODY}" \
              '{title: $title, head: $head, base: $base, body: $body}')")"

          PR_URL="$(printf '%s' "${RESPONSE}" | jq -r '.html_url')"
          echo "Created pull request: ${PR_URL}"