name: Release

on:
  push:
    tags:
      - "v*"

jobs:
  release:
    runs-on: ubuntu-latest

    env:
      BINARY_NAME: email-mcp
      BUILD_PATH: build/email-mcp-linux-amd64

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Setup Go
        uses: actions/setup-go@v5
        with:
          go-version-file: go.mod

      - name: Build linux amd64 binary
        run: make build GOOS=linux GOARCH=amd64

      - name: Create or fetch release
        id: release
        env:
          TAG_NAME: ${{ github.ref_name }}
          REPOSITORY: ${{ github.repository }}
          API_URL: ${{ github.api_url }}
          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
        run: |
          set -euo pipefail

          if [ -z "${TAG_NAME}" ]; then
            echo "missing tag name" >&2
            exit 1
          fi

          owner="${REPOSITORY%%/*}"
          repo="${REPOSITORY#*/}"
          release_url="${API_URL}/repos/${owner}/${repo}/releases/tags/${TAG_NAME}"
          create_url="${API_URL}/repos/${owner}/${repo}/releases"

          http_code="$(curl -sS -o release.json -w '%{http_code}' \
            -H "Authorization: token ${GITEA_TOKEN}" \
            -H "Content-Type: application/json" \
            "${release_url}")"

          if [ "${http_code}" = "404" ]; then
            payload="$(printf '{"tag_name":"%s","name":"%s","prerelease":false,"draft":false}' "${TAG_NAME}" "${TAG_NAME}")"
            http_code="$(curl -sS -o release.json -w '%{http_code}' \
              -X POST \
              -H "Authorization: token ${GITEA_TOKEN}" \
              -H "Content-Type: application/json" \
              -d "${payload}" \
              "${create_url}")"
          fi

          if [ "${http_code}" -lt 200 ] || [ "${http_code}" -ge 300 ]; then
            echo "release API call failed with status ${http_code}" >&2
            cat release.json >&2
            exit 1
          fi

          release_id="$(python3 -c 'import json; print(json.load(open("release.json", "r", encoding="utf-8"))["id"])')"

          echo "release_id=${release_id}" >> "${GITHUB_OUTPUT}"

      - name: Upload release asset
        env:
          REPOSITORY: ${{ github.repository }}
          API_URL: ${{ github.api_url }}
          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
          RELEASE_ID: ${{ steps.release.outputs.release_id }}
        run: |
          set -euo pipefail

          owner="${REPOSITORY%%/*}"
          repo="${REPOSITORY#*/}"
          asset_name="$(basename "${BUILD_PATH}")"
          upload_url="${API_URL}/repos/${owner}/${repo}/releases/${RELEASE_ID}/assets?name=${asset_name}"

          http_code="$(curl -sS -o asset.json -w '%{http_code}' \
            -X POST \
            -H "Authorization: token ${GITEA_TOKEN}" \
            -H "Content-Type: application/octet-stream" \
            --data-binary @"${BUILD_PATH}" \
            "${upload_url}")"

          if [ "${http_code}" -lt 200 ] || [ "${http_code}" -ge 300 ]; then
            echo "asset upload failed with status ${http_code}" >&2
            cat asset.json >&2
            exit 1
          fi