name: Plugin Library CI (Incremental)

on:
  push:
    branches: [master, main]
  workflow_dispatch:
    inputs:
      force_publish:
        description: '强制全量发布 (忽略变更检测)'
        default: 'false'
        required: true
        type: choice
        options:
          - 'false'
          - 'true'

env:
  SERVER_HOST: ${{ vars.SERVER_HOST }}
  AuthToken: ${{ vars.AUTH_TOKEN }}

jobs:
  # 第一步：检测变更的模块
  detect-changes:
    runs-on: dev
    container: node:18-alpine
    outputs:
      matrix: ${{ steps.detect.outputs.matrix }}
      has_changes: ${{ steps.detect.outputs.has_changes }}
      changed_count: ${{ steps.detect.outputs.changed_count }}
    steps:
      - name: Install Git & jq
        run: apk add --no-cache git jq
        
      - name: Checkout
        uses: http://106.52.62.106:3000/unity-registry/checkout@v4
        with:
          fetch-depth: 2  # 关键：需要上次提交来对比差异
          
      - name: Detect Changed Modules
        id: detect
        run: |
          # 如果是强制全量发布
          if [ "${{ github.event.inputs.force_publish }}" = "true" ]; then
            echo "强制执行全量发布..."
            ALL_MODULES='["00.StaryEvo","00.StaryEvoTools","00.BuildOriginality","00.ARMazTools","01.HybridCLR","02.InformationSave","03.YooAsset","04.AudioCore","05.TableTextConversion","06.UIFarme","07.RKTools","08.UniTask","09.CodeChecker","10.StoryEditor","10.XNode","11.PointCloudTools"]'
            echo "matrix={\"module\":$ALL_MODULES}" >> $GITHUB_OUTPUT
            echo "has_changes=true" >> $GITHUB_OUTPUT
            echo "changed_count=15" >> $GITHUB_OUTPUT
            exit 0
          fi

          # 获取变更文件列表（对比 HEAD~1 和 HEAD）
          # 处理首次提交的情况（没有 HEAD~1）
          if git rev-parse HEAD~1 >/dev/null 2>&1; then
            CHANGED_FILES=$(git diff --name-only HEAD~1 HEAD)
            echo "变更文件列表:"
            echo "$CHANGED_FILES"
          else
            echo "首次提交，全量发布所有模块..."
            CHANGED_FILES=$(find Assets -type f 2>/dev/null)
          fi
          
          # 定义所有候选模块
          ALL_MODULES=(
            "00.StaryEvo"
            "00.StaryEvoTools" 
            "00.BuildOriginality"
            "00.ARMazTools"
            "01.HybridCLR"
            "02.InformationSave"
            "03.YooAsset"
            "04.AudioCore"
            "05.TableTextConversion"
            "06.UIFarme"
            "07.RKTools"
            "08.UniTask"
            "09.CodeChecker"
            "10.StoryEditor"
            "10.XNode"
            "11.PointCloudTools"
          )
          
          # 检测哪些模块目录下有文件变更
          CHANGED_MODULES=()
          for module in "${ALL_MODULES[@]}"; do
            MODULE_PATH="Assets/${module}"
            
            # 检查是否有文件属于这个模块
            if echo "$CHANGED_FILES" | grep -q "^${MODULE_PATH}/"; then
              # 检查是否有 package.json（确保是有效的 npm 包）
              if [ -f "${MODULE_PATH}/package.json" ]; then
                CHANGED_MODULES+=("$module")
                echo "✅ 检测到变更: $module"
              else
                echo "⚠️ $module 有文件变更但缺少 package.json，跳过"
              fi
            fi
          done
          
          # 构建 JSON 矩阵输出
          if [ ${#CHANGED_MODULES[@]} -gt 0 ]; then
            MATRIX_JSON=$(printf '%s\n' "${CHANGED_MODULES[@]}" | jq -R . | jq -s -c .)
            echo "matrix={\"module\":$MATRIX_JSON}" >> $GITHUB_OUTPUT
            echo "has_changes=true" >> $GITHUB_OUTPUT
            echo "changed_count=${#CHANGED_MODULES[@]}" >> $GITHUB_OUTPUT
            echo "总结: 本次将发布 ${#CHANGED_MODULES[@]} 个模块"
          else
            echo "没有检测到模块变更，跳过发布"
            echo "matrix={\"module\":[]}" >> $GITHUB_OUTPUT
            echo "has_changes=false" >> $GITHUB_OUTPUT
            echo "changed_count=0" >> $GITHUB_OUTPUT
          fi

      - name: Show Detection Result
        run: |
          echo "变更检测结果:"
          echo "Has Changes: ${{ steps.detect.outputs.has_changes }}"
          echo "Changed Count: ${{ steps.detect.outputs.changed_count }}"
          echo "Matrix: ${{ steps.detect.outputs.matrix }}"

  # 第二步：只对变更的模块执行发布
  publish:
    needs: detect-changes
    if: needs.detect-changes.outputs.has_changes == 'true'
    runs-on: dev
    container:
      image: node:18-alpine
      # 可选：挂载 npm 缓存（需在 runner 宿主机创建 /cache/npm）
      volumes:
        - /cache/npm:/root/.npm:rw
    strategy:
      fail-fast: false
      # 根据变更数量动态调整并发（变更少时串行，多时并行）
      max-parallel: ${{ fromJSON(needs.detect-changes.outputs.changed_count) > 4 && 4 || 1 }}
      matrix: ${{ fromJSON(needs.detect-changes.outputs.matrix) }}
    
    steps:
      - name: Setup Node.js
        run: |
          # 如果使用了挂载缓存，先确保链接存在
          ln -sf /srv/18-alpine/bin/node /usr/bin/node 2>/dev/null || true
          ln -sf /srv/18-alpine/bin/npm /usr/bin/npm 2>/dev/null || true
          node -v

      - name: Configure npm
        run: |
          npm config set registry "http://${SERVER_HOST}/npm"
          npm config set "//${SERVER_HOST}/:_authToken" "${AuthToken}"

      - name: Sparse Checkout (仅检出目标模块)
        uses: http://106.52.62.106:3000/unity-registry/checkout@v4
        with:
          fetch-depth: 1
          sparse-checkout: Assets/${{ matrix.module }}
          # 不检出历史，极大减少大仓库的 IO 时间

      - name: Publish ${{ matrix.module }}
        working-directory: Assets/${{ matrix.module }}
        run: |
          echo "========================================"
          echo "开始发布: ${{ matrix.module }}"
          
          # 获取版本号
          CURRENT_VERSION=$(node -p "require('./package.json').version" 2>/dev/null || echo "unknown")
          echo "当前版本: $CURRENT_VERSION"
          
          # 尝试发布
          if npm publish --registry=http://${SERVER_HOST}/npm 2>&1; then
            echo "✅ ${{ matrix.module }}@$CURRENT_VERSION 发布成功"
          else
            PUBLISH_EXIT=$?
            # 检查是否因为版本已存在而失败（不算真失败）
            if npm view . --registry=http://${SERVER_HOST}/npm 2>/dev/null | grep -q "$CURRENT_VERSION"; then
              echo "⚠️ 版本 $CURRENT_VERSION 已存在，跳过"
            else
              echo "❌ 发布失败 (exit $PUBLISH_EXIT)"
              exit 1  # 真正的失败，终止 workflow
            fi
          fi

      - name: Complete
        if: always()
        run: echo "====== ${{ matrix.module }} 处理完成 ======"

  # 第三步：汇总通知（可选）
  summary:
    needs: [detect-changes, publish]
    if: always() && needs.detect-changes.outputs.has_changes == 'true'
    runs-on: dev
    steps:
      - name: Publish Summary
        run: |
          echo "## 发布汇总" >> $GITHUB_STEP_SUMMARY
          echo "- **变更模块数**: ${{ needs.detect-changes.outputs.changed_count }}" >> $GITHUB_STEP_SUMMARY
          echo "- **执行结果**: ${{ needs.publish.result }}" >> $GITHUB_STEP_SUMMARY