a ctfer on the load

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local jdtls_path = '/opt/homebrew/opt/jdtls/libexec'
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local launcher = vim.fn.glob(jdtls_path .. '/plugins/org.eclipse.equinox.launcher_*.jar')
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local os_cfg = vim.fn.has('mac') == 1 and 'config_mac'
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  or vim.fn.has('win32') == 1 and 'config_win'
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  or 'config_linux'
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-- 每个项目一个独立 workspace，用项目目录名区分
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local project_name = vim.fn.fnamemodify(vim.fn.getcwd(), ':p:h:t')
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local workspace = vim.fn.stdpath('data') .. '/jdtls-workspace/' .. project_name

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local mason_pkg = vim.fn.stdpath('data') .. '/mason/packages'
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-- 调试 adapter
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local bundles = vim.split(
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  vim.fn.glob(mason_pkg .. '/java-debug-adapter/extension/server/com.microsoft.java.debug.plugin-*.jar', true),
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  '\n', { trimempty = true })
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-- java-test：让 jdtls 支持跑单个测试方法 / 测试类
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vim.list_extend(bundles, vim.split(
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  vim.fn.glob(mason_pkg .. '/java-test/extension/server/*.jar', true),
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  '\n', { trimempty = true }))
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-- ...
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init_options = { bundles = bundles },

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vim.api.nvim_create_autocmd('FileType', {
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  pattern = 'java',
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  callback = start_jdtls,
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})
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-- config 是被第一个 java buffer 的 FileType 触发的，此时事件已经过去了，
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-- 所以要对「当前这个 buffer」再手动调一次
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if vim.bo.filetype == 'java' then
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  start_jdtls()
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end

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-- lua/custom/plugins/dap.lua
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{
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  'rcarriga/nvim-dap-ui',
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  dependencies = { 'mfussenegger/nvim-dap', 'nvim-neotest/nvim-nio' },
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  keys = {
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    { '<leader>du', function() require('dapui').toggle() end, desc = 'DAP: Toggle UI' },
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  },
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  config = function()
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    local dap, dapui = require('dap'), require('dapui')
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    dapui.setup()
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    -- 调试/测试开始时自动打开 UI
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    dap.listeners.after.event_initialized['dapui'] = dapui.open
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    -- 不在结束时自动关闭，保留结果供查看；看完用 <leader>du 手动关闭
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  end,
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}

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on_attach = function(_, bufnr)
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  -- nvim-dap / dap-ui 是懒加载的，这里强制加载，否则 setup_dap 会静默失败
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  require('custom.pack').load('nvim-dap')
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  require('custom.pack').load('nvim-dap-ui')
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  require('jdtls').setup_dap { hotcodereplace = 'auto' }
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  -- ...
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end

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local function refresh_and_debug(attempt)
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  attempt = attempt or 1
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  require('jdtls.dap').setup_dap_main_class_configs {
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    verbose = true,
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    on_ready = function()
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      local configs = require('dap').configurations.java or {}
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      if #configs > 0 then
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        vim.notify('找到 ' .. #configs .. ' 个主类，启动调试', vim.log.levels.INFO)
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        require('dap').continue()
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      elseif attempt < 5 then
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        vim.notify('jdtls 仍在导入项目，重试 ' .. attempt .. '/5…', vim.log.levels.WARN)
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        vim.defer_fn(function() refresh_and_debug(attempt + 1) end, 2000)
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      else
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        vim.notify('未发现主类。确认：1) 类有 main 方法 2) 已 mvn compile 3) jdtls 完成项目导入', vim.log.levels.ERROR)
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      end
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    end,
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  }
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end
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-- 启动 3 秒后先自动扫一次主类
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vim.defer_fn(function() require('jdtls.dap').setup_dap_main_class_configs() end, 3000)
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-- Java buffer 内的 F5：有配置就直接 continue，没有就走刷新逻辑
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map('<F5>', function()
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  local configs = require('dap').configurations.java or {}
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  if #configs > 0 then require('dap').continue() else refresh_and_debug() end
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end, 'DAP: Continue (Java)')
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map('<leader>dJ', function() refresh_and_debug() end, 'Java: 刷新主类并启动调试')

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map('<leader>jr', function()
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  local root = vim.fs.root(0, { 'mvnw', 'gradlew', 'pom.xml', 'build.gradle' })
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  if not root then vim.notify('未找到 Spring Boot 项目根目录', vim.log.levels.ERROR); return end
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  local cmd
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  if vim.uv.fs_stat(root .. '/mvnw') then cmd = 'chmod +x mvnw && ./mvnw spring-boot:run'
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  elseif vim.uv.fs_stat(root .. '/gradlew') then cmd = 'chmod +x gradlew && ./gradlew bootRun'
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  elseif vim.uv.fs_stat(root .. '/pom.xml') then cmd = 'mvn spring-boot:run'
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  else cmd = 'gradle bootRun' end
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  require('snacks').terminal(cmd, { cwd = root })
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end, 'Java: 运行 Spring Boot')

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-- 光标停在某个 @Test 方法里，跑这一个方法
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map('<leader>jt', function() require('jdtls').test_nearest_method() end, 'Java: 测试光标处方法')
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-- 跑当前文件的整个测试类
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map('<leader>jT', function() require('jdtls').test_class() end, 'Java: 测试当前类')