name: 'pnpm依赖安装与缓存'
description: '专注于pnpm的依赖缓存与安装，加速重复执行'
branding:
  icon: 'package'
  color: 'yellow'

inputs:
  cache-prefix:
    description: '缓存前缀名称'
    required: false
    default: 'modules'

  force-install:
    description: '是否强制安装 (true/false)'
    required: false
    default: 'false'

  install-command:
    description: '自定义安装命令（若设置则完全覆盖默认命令）'
    required: false
    default: ''

  install-args:
    description: '附加到默认安装命令的参数（当未提供 install-command 时生效）'
    required: false
    default: ''

  cache-hash:
    description: '缓存hash值（推荐使用hashFiles）'
    required: false
    default: ''

  clean-project-store:
    description: '安装后清理项目根目录的 .pnpm-store (true/false)'
    required: false
    default: 'false'

outputs:
  cache-hit:
    description: '是否命中缓存 (true/false)'
    value: ${{ steps.cache.outputs.cache-hit }}

  cache-key:
    description: '使用的缓存key'
    value: ${{ steps.cache-key.outputs.key }}

  cache-path:
    description: '缓存路径（用于调试与复用）'
    value: ${{ steps.cache-path.outputs.path }}

runs:
  using: 'composite'
  steps:
    - name: 检查pnpm
      id: detect
      shell: bash
      run: |
        if ! command -v pnpm >/dev/null 2>&1; then
          echo "pnpm 未安装"
          exit 1
        fi
        VERSION=$(pnpm --version | tr -d '\n')
        if [[ -z "$VERSION" ]]; then
          echo "无法获取pnpm版本"
          exit 1
        fi
        echo "pnpm-version=${VERSION}" >> "$GITHUB_OUTPUT"
        echo "PNPM_VERSION=${VERSION}" >> "$GITHUB_ENV"

    - name: 生成缓存key
      id: cache-key
      shell: bash
      env:
        PNPM_VERSION: ${{ steps.detect.outputs.pnpm-version }}
        FALLBACK_HASH: ${{ hashFiles('pnpm-lock.yaml') }}
        PACKAGE_HASH: ${{ hashFiles('package.json') }}
      run: |
        set -euo pipefail
        if [[ -n "${{ inputs.cache-hash }}" ]]; then
          CACHE_HASH="${{ inputs.cache-hash }}"
        elif [[ -n "${FALLBACK_HASH}" ]]; then
          CACHE_HASH="${FALLBACK_HASH}"
        elif [[ -n "${PACKAGE_HASH}" ]]; then
          CACHE_HASH="${PACKAGE_HASH}"
        else
          CACHE_HASH=""
        fi
        if [[ -n "$CACHE_HASH" ]]; then
          CACHE_HASH_SHORT=$(echo "$CACHE_HASH" | head -c 12)
        else
          CACHE_HASH_SHORT="no-hash"
        fi
        PNPM_VERSION="${PNPM_VERSION}"
        CACHE_KEY="${{ runner.os }}-pnpm-v${PNPM_VERSION}-store-${{ inputs.cache-prefix }}-${CACHE_HASH_SHORT}"
        RESTORE_PREFIX="${{ runner.os }}-pnpm-v${PNPM_VERSION}-store-${{ inputs.cache-prefix }}-"
        echo "key=${CACHE_KEY}" >> "$GITHUB_OUTPUT"
        echo "restore-prefix=${RESTORE_PREFIX}" >> "$GITHUB_OUTPUT"
        echo "hash=${CACHE_HASH}" >> "$GITHUB_OUTPUT"

    - name: 确定缓存路径
      id: cache-path
      shell: bash
      run: |
        set -euo pipefail
        if ! command -v pnpm >/dev/null 2>&1; then
          echo "❌ 未找到 pnpm，请先通过 pnpm/action-setup 安装" >&2
          exit 1
        fi

        STORE_DIR_CANDIDATE=$(pnpm store path --silent 2>/dev/null || true)
        STORE_DIR_CANDIDATE=$(echo "$STORE_DIR_CANDIDATE" | tail -n1 | tr -d '\r')

        if [[ -z "$STORE_DIR_CANDIDATE" ]]; then
          echo "❌ pnpm store path 未返回有效路径。可在运行前设置 PNPM_STORE_DIR=/path/to/store 或检查 pnpm 配置" >&2
          exit 1
        fi

        echo "pnpm store path: $STORE_DIR_CANDIDATE"
        echo "PNPM_STORE_DIR=${STORE_DIR_CANDIDATE}" >> "$GITHUB_ENV"
        echo "path=${STORE_DIR_CANDIDATE}" >> "$GITHUB_OUTPUT"

    - name: 拉取缓存
      id: cache
      uses: actions/cache@v4
      with:
        path: ${{ steps.cache-path.outputs.path }}
        key: ${{ steps.cache-key.outputs.key }}
        restore-keys: |
          ${{ steps.cache-key.outputs.restore-prefix }}

    - name: 显示缓存状态
      shell: bash
      run: |
        if [[ "${{ steps.cache.outputs.cache-hit }}" == "true" ]]; then
          echo "缓存命中"
        else
          echo "缓存未命中"
        fi

    - name: 安装依赖
      shell: bash
      run: |
        set -euo pipefail
        STORE_DIR="${PNPM_STORE_DIR:-${{ steps.cache-path.outputs.path }}}"
        export PNPM_STORE_DIR="$STORE_DIR"
        export npm_config_store_dir="$PNPM_STORE_DIR"
        export PNPM_CONFIG_STORE_DIR="$PNPM_STORE_DIR"
        echo "📦 Using PNPM_STORE_DIR=$PNPM_STORE_DIR"
        if [[ -n "${{ inputs.install-command }}" ]]; then
          echo "🔧 使用自定义安装命令: ${{ inputs.install-command }}"
          eval "${{ inputs.install-command }}"
          exit 0
        fi
        if [[ "${{ steps.cache.outputs.cache-hit }}" == "true" ]]; then
          FLAGS=("--offline" "--frozen-lockfile")
        else
          FLAGS=("--prefer-offline" "--frozen-lockfile")
        fi
        if [[ "${{ inputs.force-install }}" == "true" ]]; then
          FLAGS+=("--force")
        fi
        INSTALL_ARGS="${{ inputs.install-args }}"
        echo "🔧 执行 pnpm install ${FLAGS[*]} ${INSTALL_ARGS}"  
        if [[ -n "$INSTALL_ARGS" ]]; then
          pnpm install "${FLAGS[@]}" $INSTALL_ARGS
        else
          pnpm install "${FLAGS[@]}"
        fi
        if [[ "${{ inputs.clean-project-store }}" == "true" && -d ".pnpm-store" && "$(cd "$PNPM_STORE_DIR" 2>/dev/null && pwd)" != "$(cd .pnpm-store 2>/dev/null && pwd)" ]]; then
          rm -rf .pnpm-store || true
        fi
        echo "🧾 git status --short"
        CHANGES=$(git status --short || true)
        if [[ -n "$CHANGES" ]]; then
          echo "$CHANGES"
          echo "❌ 安装依赖后检测到工作区存在未提交变更。请检查上述文件，必要时更新配置或在调用前设置 PNPM_STORE_DIR。" >&2
          exit 1
        else
          echo "✅ 工作区保持干净"
        fi

    - name: 总结
      shell: bash
      run: |
        echo "pnpm版本: $PNPM_VERSION"
        echo "缓存命中: ${{ steps.cache.outputs.cache-hit }}"
        echo "缓存key: ${{ steps.cache-key.outputs.key }}"