Add the kotlin setup in nvim-dap

lua/lazyvim/plugins/extras/lang/kotlin.lua

@@ -47,5 +47,50 @@ return {
   {
     "mfussenegger/nvim-dap",
     dependencies = "williamboman/mason.nvim",
+
+    opts = function()
+      local dap = require("dap")
+      if not dap.adapters.kotlin then
+        require("dap").adapters.kotlin = {
+          type = "executable",
+          command = "kotlin-debug-adapter",
+          options = { auto_continue_if_many_stopped = false },
+        }
+      end
+
+      dap.configurations.kotlin = {
+        {
+          type = "kotlin",
+          request = "launch",
+          name = "This file",
+          -- may differ, when in doubt, whatever your project structure may be,
+          -- it has to correspond to the class file located at `build/classes/`
+          -- and of course you have to build before you debug
+          mainClass = function()
+            local root = vim.fs.find("src", { path = vim.uv.cwd(), upward = true, stop = vim.env.HOME })[1] or ""
+            local fname = vim.api.nvim_buf_get_name(0)
+            -- src/main/kotlin/websearch/Main.kt -> websearch.MainKt
+            return fname:gsub(root, ""):gsub("main/kotlin/", ""):gsub(".kt", "Kt"):gsub("/", "."):sub(2, -1)
+          end,
+          projectRoot = "${workspaceFolder}",
+          jsonLogFile = "",
+          enableJsonLogging = false,
+        },
+        {
+          -- Use this for unit tests
+          -- First, run
+          -- ./gradlew --info cleanTest test --debug-jvm
+          -- then attach the debugger to it
+          type = "kotlin",
+          request = "attach",
+          name = "Attach to debugging session",
+          port = 5005,
+          args = {},
+          projectRoot = vim.fn.getcwd,
+          hostName = "localhost",
+          timeout = 2000,
+        },
+      }
+    end,
   },
 }