name: Build WRT

on:
  workflow_dispatch:
    inputs:
      project:
        description: "选择 WRT 项目"
        required: true
        default: "immortalwrt"
        type: choice
        options:
          - lede
          - openwrt
          - immortalwrt
          - immortalwrt-mt798x
          - immortalwrt-mt798x-6.6
      tag:
        description: "版本号"
        required: false
        default: "v24.10.3"
        type: string
      version_type:
        description: "版本类型"
        required: true
        default: "stable"
        type: choice
        options:
          - "snapshot"
          - "stable"
      config_path:
        description: "配置文件路径"
        required: true
        default: "config/x86_64_config"
        type: string
      proxy_passwall2:
        description: "启用Passwall2"
        required: false
        default: false
        type: boolean
      proxy_luci_app_zzz:
        description: "启用luci-app-zzz"
        required: false
        default: false
        type: boolean
      proxy_luci_app_momo:
        description: "启用luci-app-momo"
        required: false
        default: false
        type: boolean
      threads:
        description: "编译线程数（填写 0 则使用 nproc）"
        required: false
        default: "0"
        type: string
      cache_enabled:
        description: "启用缓存加速编译"
        required: false
        default: true
        type: boolean

env:
  CCACHE_DIR: ${{ github.workspace }}/wrt/.ccache
  DL_DIR: ${{ github.workspace }}/wrt/dl

jobs:
  validate:
    name: 验证输入参数
    runs-on: ubuntu-latest
    outputs:
      is_valid: ${{ steps.validate.outputs.is_valid }}
      config_exists: ${{ steps.validate.outputs.config_exists }}
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Validate inputs
        id: validate
        run: |
          echo "🔍 验证输入参数..."
          
          # 验证 threads 参数
          if [ -n "${{ inputs.threads }}" ]; then
            if ! [[ "${{ inputs.threads }}" =~ ^[0-9]+$ ]]; then
              echo "❌ threads 参数必须是数字"
              echo "is_valid=false" >> "$GITHUB_OUTPUT"
              exit 1
            fi
          fi
          
          # 验证配置文件是否存在
          if [ -f "${{ inputs.config_path }}" ]; then
            echo "config_exists=true" >> "$GITHUB_OUTPUT"
            echo "✅ 配置文件存在：${{ inputs.config_path }}"
          else
            echo "config_exists=false" >> "$GITHUB_OUTPUT"
            echo "❌ 配置文件不存在：${{ inputs.config_path }}"
            echo "is_valid=false" >> "$GITHUB_OUTPUT"
            exit 1
          fi
          
          echo "is_valid=true" >> "$GITHUB_OUTPUT"
          echo "✅ 所有输入参数验证通过"

  build:
    name: 编译固件
    runs-on: ubuntu-latest
    needs: validate
    timeout-minutes: 360

    steps:
      - name: Checkout current repository
        uses: actions/checkout@v4

      - name: Free up disk space
        run: |
          echo "🧹 开始清理无用文件，释放磁盘空间"
          sudo rm -rf /usr/share/dotnet \
            /usr/local/lib/android \
            /opt/ghc \
            /opt/az \
            /opt/microsoft \
            /usr/local/share/boost \
            /usr/share/swift \
            /usr/local/lib/nodejs
          sudo apt-get clean
          sudo rm -rf /var/lib/apt/lists/*
          echo "📊 磁盘使用情况："
          df -h || true

      - name: Setup ccache
        uses: hendrikmuhs/ccache-action@v1.2
        if: inputs.cache_enabled == true
        with:
          key: ${{ runner.os }}-wrt-ccache-${{ inputs.project }}-${{ inputs.version_type }}
          max-size: 2G

      - name: Cache downloads
        uses: actions/cache@v4
        if: inputs.cache_enabled == true
        with:
          path: ${{ env.DL_DIR }}
          key: ${{ runner.os }}-wrt-dl-${{ inputs.project }}-${{ inputs.version_type }}-${{ hashFiles('**/*.config') }}
          restore-keys: |
            ${{ runner.os }}-wrt-dl-${{ inputs.project }}-${{ inputs.version_type }}-
            ${{ runner.os }}-wrt-dl-${{ inputs.project }}-
            ${{ runner.os }}-wrt-dl-

      - name: Cache build directory
        uses: actions/cache@v4
        if: inputs.cache_enabled == true
        with:
          path: wrt/build_dir
          key: ${{ runner.os }}-wrt-build-${{ inputs.project }}-${{ inputs.version_type }}-${{ hashFiles('**/*.config') }}
          restore-keys: |
            ${{ runner.os }}-wrt-build-${{ inputs.project }}-${{ inputs.version_type }}-
            ${{ runner.os }}-wrt-build-${{ inputs.project }}-
            ${{ runner.os }}-wrt-build-

      - name: Choose Wrt Version
        id: refinfo
        run: |
          if [ "${{ inputs.version_type }}" = "snapshot" ]; then
            echo "ref=master" >> "$GITHUB_OUTPUT"
          else
            echo "ref=${{ inputs.tag }}" >> "$GITHUB_OUTPUT"
          fi

      - name: Install dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y \
            build-essential clang flex bison g++ gawk gettext git \
            libncurses-dev libssl-dev python3 python3-dev python3-setuptools \
            rsync unzip zlib1g-dev file wget curl \
            gzip tar zip xz-utils bzip2 zstd \
            make cmake autoconf automake libtool patch diffutils \
            findutils grep sed help2man texinfo \
            libelf-dev libfuse-dev liblzma-dev libxml2-dev libyaml-dev \
            uuid-dev device-tree-compiler antlr3 gperf \
            time bc jq xxd swig upx-ucl ccache ecj fastjar imagemagick \
            llvm linux-tools-common libbpf-dev linux-tools-$(uname -r) \
            u-boot-tools device-tree-compiler

      - name: Determine Git URL
        id: projectinfo
        run: |
          case "${{ inputs.project }}" in
            immortalwrt)
              echo "url=https://github.com/immortalwrt/immortalwrt.git" >> $GITHUB_OUTPUT
              ;;
            immortalwrt-mt798x)
              echo "url=https://github.com/hanwckf/immortalwrt-mt798x.git" >> $GITHUB_OUTPUT
              ;;
            immortalwrt-mt798x-6.6)
              echo "url=https://github.com/padavanonly/immortalwrt-mt798x-6.6.git" >> $GITHUB_OUTPUT
              ;;
            openwrt)
              echo "url=https://git.openwrt.org/openwrt/openwrt.git" >> $GITHUB_OUTPUT
              ;;
            lede)
              echo "url=https://github.com/coolsnowwolf/lede.git" >> $GITHUB_OUTPUT
              ;;
            *)
              echo "❌ 未知项目: ${{ inputs.project }}" >&2
              exit 1
              ;;
          esac

      - name: Clone Wrt source
        run: |
          echo "📥 克隆 ${{ inputs.project }} 仓库"
          git clone --depth 1 "${{ steps.projectinfo.outputs.url }}" -b "${{ steps.refinfo.outputs.ref }}" wrt || \
          (git clone "${{ steps.projectinfo.outputs.url }}" wrt && cd wrt && git checkout "${{ steps.refinfo.outputs.ref }}")
          echo "🔖 当前版本：$(cd wrt && git describe --tags --always || git rev-parse --short HEAD)"

      - name: Copy and Run diy.sh
        run: |
          echo "📂 复制 diy.sh 到 wrt 目录并执行"
          cp diy.sh wrt/diy.sh
          cd wrt
          chmod +x diy.sh
          ./diy.sh

      - name: Update and install feeds
        working-directory: wrt
        run: |
          if [ "${{ inputs.proxy_luci_app_zzz }}" = "true" ]; then
            echo "📦 添加 luci-app-zzz feed"
            echo "src-git luci-app-zzz https://github.com/Dichgrem/luci-app-zzz.git" >> "feeds.conf.default"
          fi

          if [ "${{ inputs.proxy_passwall2 }}" = "true" ]; then
            echo "📦 添加 passwall2 feed"
            echo "src-git passwall https://github.com/xiaorouji/openwrt-passwall2.git" >> "feeds.conf.default"
          fi

          if [ "${{ inputs.proxy_luci_app_momo }}" = "true" ]; then
            echo "📦 添加 luci-app-momo feed"
            echo "src-git momo https://github.com/nikkinikki-org/OpenWrt-momo.git" >> "feeds.conf.default"
          fi

          echo "📦 更新 feeds"
          ./scripts/feeds update -a
          echo "📦 安装 feeds"
          ./scripts/feeds install -a

      - name: Setup configuration
        run: |
          echo "📋 复制配置：${{ inputs.config_path }} → wrt/.config"
          cp "${{ inputs.config_path }}" wrt/.config

          cd wrt

          echo "📑 备份配置文件以供对比"
          cp .config .config.before_oldconfig

          echo "🔄 运行 make oldconfig"
          make oldconfig

          echo "🔍 对比 make oldconfig 前后的 .config 差异"
          if cmp -s .config.before_oldconfig .config; then
            echo "✅ .config 在 make oldconfig 后未发生变化"
          else
            echo "⚠️ .config 在 make oldconfig 后发生变化，差异如下："
            diff -u .config.before_oldconfig .config || true
          fi

      - name: Download packages
        working-directory: wrt
        run: |
          echo "⬇️ 下载所有源码包（使用单线程 -j1 避免卡住）"
          set -o pipefail
          START=$(date +%s)
          time make download -j1
          END=$(date +%s)
          DURATION=$((END - START))
          echo "✅ 下载完成，耗时：${DURATION}秒"

      - name: Build Firmware
        id: build
        working-directory: wrt
        run: |
          if [ "${{ inputs.threads }}" = "0" ] || [ -z "${{ inputs.threads }}" ]; then
            JOBS=$(nproc)
          else
            JOBS=${{ inputs.threads }}
          fi

          echo "🚀 全量编译（并行 ${JOBS}）开始"
          START=$(date "+%Y-%m-%d %H:%M:%S")
          START_TS=$(date +%s)
          echo "⏱️ 编译开始：${START}"
          echo "jobs_count=${JOBS}" >> "$GITHUB_OUTPUT"

          set -o pipefail

          # 第一次尝试多线程编译，并保存日志
          if ! (time make world -j${JOBS} 2>&1 | tee world_debug.log); then
            echo "⚠️ 多线程编译失败，尝试使用单线程并输出详细信息..."

            # 单线程模式输出详细信息，并追加到同一日志
            time make world -j1 V=s 2>&1 | tee -a world_debug.log

            echo "❌ 单线程编译后依然失败，以下是匹配关键字的错误行："
            grep -E -i "(error:|failed|fatal|cannot install package)" -n world_debug.log || true

            exit 1
          fi

          END=$(date "+%Y-%m-%d %H:%M:%S")
          END_TS=$(date +%s)
          DURATION=$((END_TS - START_TS))
          DURATION_H=$((DURATION / 3600))
          DURATION_M=$(((DURATION % 3600) / 60))
          DURATION_S=$((DURATION % 60))
          
          echo "✅ 编译成功"
          echo "⏱️ 编译结束：${END}"
          echo "⏱️ 总耗时：${DURATION_H}小时 ${DURATION_M}分钟 ${DURATION_S}秒"
          echo "build_success=true" >> "$GITHUB_OUTPUT"

      - name: Build statistics
        if: steps.build.outputs.build_success == 'true'
        run: |
          echo "📊 编译统计信息："
          echo "项目：${{ inputs.project }}"
          echo "版本：${{ steps.refinfo.outputs.ref }}"
          echo "编译线程：${{ steps.build.outputs.jobs_count }}"
          echo "缓存状态：${{ inputs.cache_enabled }}"
          echo ""
          echo "固件文件列表："
          if [ -d wrt/bin/targets ]; then
            find wrt/bin/targets -type f -exec ls -lh {} \; | awk '{print $9, $5}'
            echo ""
            echo "总固件大小："
            du -sh wrt/bin/targets
          fi

      - name: Upload build log on failure
        uses: actions/upload-artifact@v4
        if: failure()
        with:
          name: ${{ inputs.project }}-build-log-error
          path: wrt/world_debug.log
          retention-days: 7
          if-no-files-found: ignore

      - name: Upload build artifacts
        uses: actions/upload-artifact@v4
        if: steps.build.outputs.build_success == 'true'
        with:
          name: ${{ inputs.project }}-output-${{ inputs.version_type }}-${{ github.run_number }}
          path: |
            wrt/bin/targets/**
            !wrt/bin/targets/x86/64/packages/**
            !wrt/bin/targets/**/packages/**
          if-no-files-found: warn
          compression-level: 6
          overwrite: false
          retention-days: 30

      - name: Upload config diff
        uses: actions/upload-artifact@v4
        if: steps.build.outputs.build_success == 'true'
        with:
          name: ${{ inputs.project }}-config-diff
          path: |
            wrt/.config
            wrt/.config.before_oldconfig
          if-no-files-found: ignore
          retention-days: 7

      - name: Cleanup
        if: always()
        run: |
          echo "🧹 清理工作空间..."
          cd wrt
          make clean || true
          echo "✅ 清理完成"