name: Build Custom 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
      version_type:
        description: "版本类型"
        required: true
        default: "stable"
        type: choice
        options:
          - "snapshot"
          - "stable"
      branch:
        description: "snapshot-branch"
        required: false
        default: "master"
        type: string
      tag:
        description: "stable-tag"
        required: false
        default: "v24.10.2"
        type: string
      config_path:
        description: "config 路径"
        required: true
        default: "config/myconfig"
        type: string
      threads:
        description: "编译线程数（留空或填写 0 则自动使用 nproc）"
        required: false
        default: "0"
        type: string

jobs:
  build:
    runs-on: ubuntu-latest

    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
          sudo apt-get clean
          sudo rm -rf /var/lib/apt/lists/*
          # 显示当前磁盘使用情况
          echo "📊 磁盘使用情况："
          df -h || true

      - name: Determine Git ref
        id: refinfo
        run: |
          if [ "${{ inputs.version_type }}" = "snapshot" ]; then
            echo "ref=${{ inputs.branch }}" >> $GITHUB_OUTPUT
          else
            echo "ref=${{ 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)

      - 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 repository
        run: |
          echo "📥 克隆 ${{ inputs.project }} 仓库"
          git clone "${{ steps.projectinfo.outputs.url }}" wrt
          cd wrt
          echo "🔖 切换到版本：${{ steps.refinfo.outputs.ref }}"
          git checkout "${{ steps.refinfo.outputs.ref }}"

      - 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: |
          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：${{ inputs.config_path }} → wrt/.config"
          if [ ! -f "${{ inputs.config_path }}" ]; then
            echo "❌ 找不到配置文件：${{ inputs.config_path }}"
            exit 1
          fi

          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 source 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
          time make download -j1

      - name: Build Firmware
        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")
          echo "⏱️ 编译开始：${START}"

          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=$(date "+%Y-%m-%d %H:%M:%S")
          echo "✅ 编译成功"
          echo "⏱️ 编译结束：${END}"

      - name: list all target files
        run: |
          echo ">>> 打印 wrt/bin/targets 下所有文件："
          if [ -d wrt/bin/targets ]; then
            find wrt/bin/targets -type f | sed 's/^/  - /'
          else
            echo "❗ wrt/bin/targets 目录不存在"
          fi

      - name: Upload build artifacts
        uses: actions/upload-artifact@v4
        with:
          name: ${{ inputs.project }}-output
          path: |
            wrt/bin/targets/**
            !wrt/bin/targets/x86/64/packages/**
          if-no-files-found: warn
          compression-level: 6
          overwrite: false

      - name: Upload build log
        uses: actions/upload-artifact@v4
        with:
          name: ${{ inputs.project }}-build-log
          path: wrt/world_debug.log