name: release

on:
  workflow_dispatch:
    inputs:
      tag_name:
        description: Release tag (for example v1.0.0)
        required: true
      release_name:
        description: Optional release title
        required: false
      release_notes:
        description: Release notes / body
        required: false

jobs:
  build-release:
    name: Build module release
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Install release tooling
        run: |
          sudo apt-get update
          sudo apt-get install -y curl jq zip

      - name: Build installable module zip
        id: package
        env:
          MODULE_NAME: ${{ github.event.repository.name }}
          TAG_NAME: ${{ inputs.tag_name }}
        run: |
          set -euo pipefail

          tag_slug="$(printf '%s' "${TAG_NAME}" | tr '/[:space:]' '-')"
          archive="/tmp/${MODULE_NAME}-${tag_slug}.zip"
          package_root="/tmp/module-package"

          rm -rf "${package_root}"
          mkdir -p "${package_root}/${MODULE_NAME}"

          tar \
            --exclude='./.git' \
            --exclude='./.gitea' \
            -C "${GITHUB_WORKSPACE}" \
            -cf - . | tar -C "${package_root}/${MODULE_NAME}" -xf -

          cd "${package_root}"
          zip -qr "${archive}" "${MODULE_NAME}"
          ls -lh "${archive}"

          {
            echo "archive=${archive}"
            echo "asset_name=$(basename "${archive}")"
          } >> "$GITHUB_OUTPUT"

      - name: Create or reuse Gitea release
        id: release
        env:
          GITEA_TOKEN: ${{ github.token }}
          GITEA_API: ${{ github.server_url }}/api/v1
          REPO: ${{ github.repository }}
          TAG_NAME: ${{ inputs.tag_name }}
          INPUT_RELEASE_NAME: ${{ inputs.release_name }}
          RELEASE_NOTES: ${{ inputs.release_notes }}
          TARGET_COMMITISH: ${{ github.sha }}
        run: |
          set -euo pipefail

          if [ -n "${INPUT_RELEASE_NAME}" ]; then
            release_name="${INPUT_RELEASE_NAME}"
          else
            release_name="Release ${TAG_NAME}"
          fi

          get_release_url="${GITEA_API}/repos/${REPO}/releases/tags/${TAG_NAME}"
          create_release_url="${GITEA_API}/repos/${REPO}/releases"

          status="$(curl -sS -o /tmp/release.json -w '%{http_code}' \
            -H "Authorization: token ${GITEA_TOKEN}" \
            "${get_release_url}")"

          if [ "${status}" = "200" ]; then
            echo "release_id=$(jq -r '.id' /tmp/release.json)" >> "$GITHUB_OUTPUT"
            exit 0
          fi

          if [ "${status}" != "404" ]; then
            echo "Unexpected response while checking release: HTTP ${status}"
            cat /tmp/release.json
            exit 1
          fi

          jq -n \
            --arg tag_name "${TAG_NAME}" \
            --arg target_commitish "${TARGET_COMMITISH}" \
            --arg name "${release_name}" \
            --arg body "${RELEASE_NOTES}" \
            '{tag_name:$tag_name,target_commitish:$target_commitish,name:$name,body:$body,draft:false,prerelease:false}' \
            > /tmp/release-payload.json

          curl -sS \
            -H "Authorization: token ${GITEA_TOKEN}" \
            -H "Content-Type: application/json" \
            -X POST \
            --data @/tmp/release-payload.json \
            "${create_release_url}" \
            -o /tmp/release.json

          if ! jq -e '.id' /tmp/release.json >/dev/null; then
            cat /tmp/release.json
            exit 1
          fi

          echo "release_id=$(jq -r '.id' /tmp/release.json)" >> "$GITHUB_OUTPUT"

      - name: Upload release asset
        env:
          GITEA_TOKEN: ${{ github.token }}
          GITEA_API: ${{ github.server_url }}/api/v1
          REPO: ${{ github.repository }}
          RELEASE_ID: ${{ steps.release.outputs.release_id }}
          ASSET: ${{ steps.package.outputs.archive }}
          ASSET_NAME: ${{ steps.package.outputs.asset_name }}
        run: |
          set -euo pipefail

          assets_url="${GITEA_API}/repos/${REPO}/releases/${RELEASE_ID}/assets"

          curl -sS \
            -H "Authorization: token ${GITEA_TOKEN}" \
            "${assets_url}" \
            -o /tmp/release-assets.json

          existing_id="$(python3 - <<'PY'
          import json, os
          with open('/tmp/release-assets.json', 'r', encoding='utf-8') as f:
              assets = json.load(f)
          for asset in assets:
              if asset.get('name') == os.environ['ASSET_NAME']:
                  print(asset['id'])
                  break
          PY
          )"

          if [ -n "${existing_id}" ]; then
            curl -sS \
              -H "Authorization: token ${GITEA_TOKEN}" \
              -X DELETE \
              "${assets_url}/${existing_id}" \
              >/dev/null
          fi

          curl -sS \
            -H "Authorization: token ${GITEA_TOKEN}" \
            -X POST \
            -F "attachment=@${ASSET}" \
            "${assets_url}?name=${ASSET_NAME}" \
            >/dev/null