name: Release

on:
  push:
    branches:
      - master
    paths:
      - ".github/workflows/release.yml"
      - "scripts/build.ps1"
      - "scripts/build.sh"
      - "scripts/docker/Dockerfile.release"
    tags:
      - "*"

env:
  GITEA_SERVER_URL: https://git.pchuan.top
  RUST_IMAGE: docker.m.daocloud.io/library/rust:1-bookworm
  APT_MIRROR: https://mirrors.ustc.edu.cn/debian
  CARGO_TERM_COLOR: always

jobs:
  prepare-release:
    name: Prepare release
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Create or update Gitea release
        shell: bash
        env:
          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
        run: |
          set -euo pipefail

          if [[ "${GITHUB_REF:-}" == refs/tags/* ]]; then
            current_tag="${GITHUB_REF_NAME}"
          else
            current_tag="$(git describe --tags --abbrev=0)"
          fi
          version="${current_tag#v}"
          tag_target="$(git rev-list -n 1 "${current_tag}^{}")"
          previous_tag="$(git describe --tags --abbrev=0 "${current_tag}^{}^" 2>/dev/null || true)"
          api_base="${GITEA_SERVER_URL}/api/v1/repos/${GITHUB_REPOSITORY}"

          {
            echo "## Changes"
            echo
            echo "Built from commit: \`${GITHUB_SHA}\`"
            echo
            if [[ -n "${previous_tag}" ]]; then
              echo "Changes since \`${previous_tag}\`:"
              echo
              git log --no-merges --pretty=format:'- %s (%h)' "${previous_tag}..${current_tag}"
            else
              echo "Initial release changes:"
              echo
              git log --no-merges --pretty=format:'- %s (%h)' "${current_tag}^{}"
            fi
            echo
            echo
            echo "## Artifacts"
            echo
            echo "- \`cdxs-${version}-windows-x64.exe\`"
            echo "- \`cdxs-${version}-linux-x64\`"
            echo "- \`cdxs-${version}-linux-arm64\`"
          } > RELEASE_NOTES.md

          body="$(python3 -c 'import json, pathlib; print(json.dumps(pathlib.Path("RELEASE_NOTES.md").read_text()))')"
          payload="$(printf '{"tag_name":"%s","target_commitish":"%s","name":"%s","body":%s,"draft":false,"prerelease":false}' \
            "${current_tag}" "${tag_target}" "${current_tag}" "${body}")"

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

          if [[ "${status}" == "200" ]]; then
            release_id="$(python3 -c 'import json; print(json.load(open("release.json"))["id"])')"
            curl -sS -X PATCH \
              -H "Authorization: token ${GITEA_TOKEN}" \
              -H "Content-Type: application/json" \
              -d "${payload}" \
              "${api_base}/releases/${release_id}" >/dev/null
          elif [[ "${status}" == "404" ]]; then
            curl -sS -X POST \
              -H "Authorization: token ${GITEA_TOKEN}" \
              -H "Content-Type: application/json" \
              -d "${payload}" \
              "${api_base}/releases" >/dev/null
          else
            cat release.json
            echo "Unexpected Gitea release lookup status: ${status}" >&2
            exit 1
          fi

  build-release-assets:
    name: Build release assets
    runs-on: ubuntu-latest
    needs: prepare-release
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Resolve release tag
        shell: bash
        run: |
          set -euo pipefail

          if [[ "${GITHUB_REF:-}" == refs/tags/* ]]; then
            release_tag="${GITHUB_REF_NAME}"
          else
            release_tag="$(git describe --tags --abbrev=0)"
          fi
          echo "RELEASE_TAG=${release_tag}" >> "${GITHUB_ENV}"
          echo "VERSION=${release_tag#v}" >> "${GITHUB_ENV}"

      - name: Build release assets
        shell: bash
        run: bash scripts/build.sh --version "${VERSION}" --rust-image "${RUST_IMAGE}" --apt-mirror "${APT_MIRROR}" --clean

      - name: Upload release assets
        shell: bash
        env:
          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
        run: |
          set -euo pipefail

          api_base="${GITEA_SERVER_URL}/api/v1/repos/${GITHUB_REPOSITORY}"
          curl -sS -H "Authorization: token ${GITEA_TOKEN}" "${api_base}/releases/tags/${RELEASE_TAG}" > release.json
          release_id="$(python3 -c 'import json; print(json.load(open("release.json"))["id"])')"
          curl -sS -H "Authorization: token ${GITEA_TOKEN}" "${api_base}/releases/${release_id}/assets" > assets.json

          for file in dist/*; do
            name="$(basename "${file}")"
            existing_asset_id="$(python3 -c 'import json, sys; target = sys.argv[1]; print(next((str(asset["id"]) for asset in json.load(open("assets.json")) if asset.get("name") == target), ""))' "${name}")"
            if [[ -n "${existing_asset_id}" ]]; then
              curl -fsS -X DELETE \
                -H "Authorization: token ${GITEA_TOKEN}" \
                "${api_base}/releases/${release_id}/assets/${existing_asset_id}"
            fi
            curl -fsS -X POST \
              -H "Authorization: token ${GITEA_TOKEN}" \
              -F "attachment=@${file}" \
              "${api_base}/releases/${release_id}/assets?name=${name}"
          done