name: 发布至 crates.io

on:
  push:
    tags:
      - 'v*'
  workflow_dispatch:

env:
  CARGO_TERM_COLOR: always

jobs:
  # ============================================================
  # 发布 chanlun 核心库至 crates.io
  # ============================================================
  publish-chanlun:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: 安装 Rust 工具链
        uses: dtolnay/rust-toolchain@stable
        with:
          components: rustfmt, clippy

      - name: 缓存依赖
        uses: actions/cache@v4
        with:
          path: |
            ~/.cargo/registry
            ~/.cargo/git
            target
          key: ${{ runner.os }}-cargo-${{ hashFiles('chanlun/Cargo.lock') }}

      - name: 提取版本号
        id: version
        working-directory: chanlun
        run: |
          VER=$(cargo metadata --format-version 1 --no-deps 2>/dev/null \
            | jq -r '.packages[] | select(.name == "chanlun") | .version')
          echo "version=$VER" >> $GITHUB_OUTPUT
          echo "当前版本: $VER"

      - name: 检查版本是否已存在
        id: check
        run: |
          VER="${{ steps.version.outputs.version }}"
          EXISTS=$(curl -sS "https://crates.io/api/v1/crates/chanlun" \
            | jq -r --arg v "$VER" '.versions[]?.num // empty | select(. == $v)')
          if [ -n "$EXISTS" ]; then
            echo "版本 $VER 已存在于 crates.io，跳过发布"
            echo "exists=true" >> $GITHUB_OUTPUT
          else
            echo "版本 $VER 未发布，继续"
            echo "exists=false" >> $GITHUB_OUTPUT
          fi

      - name: 格式检查
        if: steps.check.outputs.exists == 'false'
        working-directory: chanlun
        run: cargo fmt --check

      - name: Lint 检查
        if: steps.check.outputs.exists == 'false'
        working-directory: chanlun
        run: cargo clippy -- -D warnings

      - name: 运行测试
        if: steps.check.outputs.exists == 'false'
        working-directory: chanlun
        run: cargo test

      - name: 验证打包
        if: steps.check.outputs.exists == 'false'
        working-directory: chanlun
        run: cargo package --dry-run

      - name: 登录 crates.io
        if: steps.check.outputs.exists == 'false'
        run: cargo login ${{ secrets.CARGO_TOKEN }}

      - name: 发布 chanlun 至 crates.io
        if: steps.check.outputs.exists == 'false'
        working-directory: chanlun
        run: cargo publish