# 通用 Go + Vue 项目 CI（Gitea Actions）
#
# 复制整个 .gitea/ 到任意仓库即可使用，约定：
#   - 仓库根目录有 go.mod、Dockerfile
#   - 前端（可选）默认在 web/，含 package.json
#
# 前置条件：
#   1. 在线 act_runner（runs-on: ubuntu-latest，见 act-runner/README.md）
#   2. 仓库 Secret：REGISTRY_TOKEN（PAT，write:package 权限）
#
# 可选：仓库 Settings → Actions → Variables 覆盖下方空默认值
#   REGISTRY、GITEA_ROOT_URL、IMAGE_NAME、DOCKERFILE、DOCKER_PLATFORMS、WEB_DIR、GO_TEST_SCOPE、GOPROXY、GOSUMDB

name: CI

on:
  push:
    branches: [main, master]
    tags: ['v*']
  pull_request:

env:
  REGISTRY: ${{ vars.REGISTRY }}
  GITEA_ROOT_URL: ${{ vars.GITEA_ROOT_URL }}
  IMAGE_NAME: ${{ vars.IMAGE_NAME }}
  DOCKERFILE: ${{ vars.DOCKERFILE }}
  DOCKER_PLATFORMS: ${{ vars.DOCKER_PLATFORMS }}
  WEB_DIR: ${{ vars.WEB_DIR }}
  GO_TEST_SCOPE: ${{ vars.GO_TEST_SCOPE }}
  DOCKER_IMAGE_PREFIX: ${{ vars.DOCKER_IMAGE_PREFIX }}
  NODE_VERSION: ${{ vars.NODE_VERSION }}
  GOPROXY: ${{ vars.GOPROXY }}
  GOSUMDB: ${{ vars.GOSUMDB }}

jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Setup Go
        shell: bash
        env:
          GITEA_SERVER_URL: ${{ gitea.server_url }}
        run: |
          set -euo pipefail
          export GOPROXY="${GOPROXY:-https://goproxy.cn,direct}"
          export GOSUMDB="${GOSUMDB:-sum.golang.google.cn}"

          GO_VERSION=$(grep '^go ' go.mod | awk '{print $2}')
          ARCH=$(uname -m | sed 's/x86_64/amd64/; s/aarch64/arm64/')
          TAR="go${GO_VERSION}.linux-${ARCH}.tar.gz"

          if command -v go >/dev/null 2>&1 && go version | grep -q "go${GO_VERSION} "; then
            go version
          else
            downloaded=0
            for url in \
              "https://mirrors.aliyun.com/golang/${TAR}" \
              "https://golang.google.cn/dl/${TAR}" \
              "https://go.dev/dl/${TAR}"; do
              echo "trying ${url}"
              if curl -fsSL --connect-timeout 20 --retry 3 --retry-delay 5 --max-time 600 \
                "$url" -o /tmp/go.tgz; then
                downloaded=1
                break
              fi
            done
            if [ "$downloaded" -ne 1 ]; then
              echo "failed to download Go ${GO_VERSION}" >&2
              exit 1
            fi
            rm -rf /usr/local/go
            tar -C /usr/local -xzf /tmp/go.tgz
          fi
          echo "/usr/local/go/bin" >> "$GITHUB_PATH"
          /usr/local/go/bin/go version

      - name: Run Go tests
        shell: bash
        run: |
          set -euo pipefail
          export GOPROXY="${GOPROXY:-https://goproxy.cn,direct}"
          export GOSUMDB="${GOSUMDB:-sum.golang.google.cn}"
          scope="${GO_TEST_SCOPE:-./...}"
          go test "${scope}"

      - name: Build web (optional)
        shell: bash
        run: |
          set -euo pipefail
          web_dir="${WEB_DIR:-web}"
          if [ ! -f "${web_dir}/package.json" ]; then
            echo "skip: ${web_dir}/package.json not found"
            exit 0
          fi

          node_ok() {
            command -v node >/dev/null 2>&1 || return 1
            node -e '
              const [maj, min] = process.versions.node.split(".").map(Number);
              const ok = maj > 22 || (maj === 22 && min >= 12) || (maj === 20 && min >= 19);
              process.exit(ok ? 0 : 1);
            '
          }

          if ! node_ok; then
            node_ver="${NODE_VERSION:-20.19.0}"
            arch=$(uname -m | sed 's/x86_64/x64/; s/aarch64/arm64/')
            tar_name="node-v${node_ver}-linux-${arch}.tar.xz"
            downloaded=0
            for url in \
              "https://npmmirror.com/mirrors/node/v${node_ver}/${tar_name}" \
              "https://nodejs.org/dist/v${node_ver}/${tar_name}"; do
              echo "trying ${url}"
              if curl -fsSL --connect-timeout 20 --retry 3 --retry-delay 5 --max-time 600 \
                "${url}" -o /tmp/node.tar.xz; then
                downloaded=1
                break
              fi
            done
            if [ "$downloaded" -ne 1 ]; then
              echo "skip: Node.js ${node_ver} download failed (frontend will be built in Docker)"
              exit 0
            fi
            rm -rf /usr/local/node
            mkdir -p /usr/local/node
            tar -xJf /tmp/node.tar.xz -C /usr/local/node --strip-components=1
            echo "/usr/local/node/bin" >> "${GITHUB_PATH:-/dev/null}"
            export PATH="/usr/local/node/bin:${PATH}"
          fi

          node -v
          npm -v

          cd "${web_dir}"
          if [ -f package-lock.json ]; then
            npm ci
          else
            npm install
          fi
          npm run build

  docker:
    runs-on: ubuntu-latest
    container:
      image: catthehacker/ubuntu:act-22.04
    needs: test
    if: gitea.event_name == 'push'
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Setup Docker
        run: |
          set -eux
          if ! command -v docker >/dev/null 2>&1; then
            apt-get update
            DEBIAN_FRONTEND=noninteractive apt-get install -y docker.io
          fi
          if [ ! -S /var/run/docker.sock ]; then
            echo "ERROR: /var/run/docker.sock 未挂载到 job 容器。" >&2
            echo "请在 act_runner config.yaml 中配置：" >&2
            echo "  container.options: -v /var/run/docker.sock:/var/run/docker.sock" >&2
            echo "  container.valid_volumes: [/var/run/docker.sock]" >&2
            exit 1
          fi
          docker info

      - name: Resolve registry
        id: reg
        shell: bash
        env:
          GITEA_SERVER_URL: ${{ gitea.server_url }}
        run: |
          set -euo pipefail

          url_to_host() {
            echo "$1" | sed -e 's|^https://||' -e 's|^http://||' -e 's|/.*||'
          }

          is_internal_host() {
            local host="${1%%:*}"
            case "$host" in
              localhost|127.*|10.*|192.168.*) return 0 ;;
              172.*)
                local second
                second=$(echo "$host" | cut -d. -f2)
                [ "$second" -ge 16 ] && [ "$second" -le 31 ]
                return
                ;;
              *) return 1 ;;
            esac
          }

          registry="${REGISTRY:-}"
          if [ -z "$registry" ] && [ -n "${GITEA_ROOT_URL:-}" ]; then
            registry=$(url_to_host "${GITEA_ROOT_URL}")
          fi
          if [ -z "$registry" ]; then
            registry=$(url_to_host "${GITEA_SERVER_URL}")
          fi

          if is_internal_host "$registry"; then
            echo "ERROR: Registry 主机 '${registry}' 是内网地址，docker login 会失败。" >&2
            echo "请在仓库 Settings → Actions → Variables 设置：" >&2
            echo "  REGISTRY=你的公网 Gitea 域名（如 git.example.com，不要带端口 13827）" >&2
            exit 1
          fi

          echo "registry host: ${registry}"

          auth_header=""
          if auth_header=$(curl -fsS -D - "https://${registry}/v2/" -o /dev/null 2>&1 | grep -i '^www-authenticate:'); then
            :
          else
            echo "WARN: 无法读取 https://${registry}/v2/ 的 WWW-Authenticate 头" >&2
          fi

          if [ -n "$auth_header" ] && echo "$auth_header" | grep -qiE '127\.0\.0\.1|172\.(1[6-9]|2[0-9]|3[01])\.|localhost|:13827'; then
            echo "ERROR: Registry token realm 仍指向内网地址：" >&2
            echo "  ${auth_header}" >&2
            echo "请在 Gitea app.ini 设置 ROOT_URL=https://${registry}/ 且 PUBLIC_URL_DETECTION=never，然后重启 Gitea。" >&2
            exit 1
          fi

          echo "host=${registry}" >> "${GITHUB_OUTPUT}"

      - name: Log in to Container Registry
        shell: bash
        run: |
          set -euo pipefail
          echo "${{ secrets.REGISTRY_TOKEN }}" | \
            docker login "${{ steps.reg.outputs.host }}" -u "${{ gitea.actor }}" --password-stdin

      - name: Build and push
        shell: bash
        env:
          GITEA_SHA: ${{ gitea.sha }}
          GITEA_REF: ${{ gitea.ref }}
          GITEA_REPOSITORY: ${{ gitea.repository }}
          GITEA_REPOSITORY_OWNER: ${{ gitea.repository_owner }}
          REGISTRY_HOST: ${{ steps.reg.outputs.host }}
        run: |
          set -euo pipefail

          registry="${REGISTRY_HOST}"
          image_name="${IMAGE_NAME:-}"
          if [ -z "$image_name" ]; then
            image_name=$(echo "${GITEA_REPOSITORY##*/}" | tr '[:upper:]' '[:lower:]')
          fi

          dockerfile="${DOCKERFILE:-Dockerfile}"
          platforms="${DOCKER_PLATFORMS:-linux/amd64,linux/arm64}"

          image="${registry}/${GITEA_REPOSITORY_OWNER}/${image_name}"
          tags="${image}:sha-${GITEA_SHA:0:7}"
          case "${GITEA_REF}" in
            refs/heads/main|refs/heads/master)
              tags="${tags},${image}:latest"
              ;;
            refs/tags/v*)
              tags="${tags},${image}:${GITEA_REF#refs/tags/}"
              ;;
          esac

          builder_id="gitea-buildx-${GITEA_REPOSITORY//\//-}"

          docker run --privileged --rm tonistiigi/binfmt --install all 2>/dev/null || true
          docker buildx create --name "${builder_id}" --use 2>/dev/null || docker buildx use "${builder_id}"
          docker buildx inspect --bootstrap

          tag_args=()
          IFS=',' read -r -a tag_list <<< "$tags"
          for t in "${tag_list[@]}"; do
            tag_args+=(-t "$t")
          done

          build_args=()
          if [ -n "${DOCKER_IMAGE_PREFIX:-}" ]; then
            build_args+=(--build-arg "IMAGE_PREFIX=${DOCKER_IMAGE_PREFIX}")
          fi

          docker buildx build \
            --platform "${platforms}" \
            -f "${dockerfile}" \
            "${build_args[@]}" \
            "${tag_args[@]}" \
            --push \
            .