dotfiles/dot_config/nvim/lua/plugins/dap.lua

local get_python_path = function()
  for _, client in pairs(vim.lsp.get_active_clients()) do
    if client.name == "pyright" then
      local path = client.config.settings.python.pythonPath
      if path ~= nil then
        return path
      else
        return "python"
      end
    end
  end
end

return {
  {
    "jayp0521/mason-nvim-dap.nvim",
    lazy = false,
    config = function()
      local dap = require("dap")
      local mason_dap = require("mason-nvim-dap")

      mason_dap.setup({
        ensure_installed = { "python", "codelldb", "java-debug-adapter", "java-test" },
        automatic_setup = true,
      })
      mason_dap.setup_handlers({
        -- default handler
        function(source)
          require("mason-nvim-dap.automatic_setup")(source)
        end,

        -- custom handlers
        python = function(_)
          dap.adapters.python = {
            type = "executable",
            command = "debugpy-adapter",
          }

          dap.configurations.python = {
            {
              name = "Launch current file",
              type = "python",
              request = "launch",
              program = "${file}",
              pythonPath = get_python_path,
            },
            {
              name = "Launch pytest",
              type = "python",
              request = "launch",
              module = "pytest",
              pythonPath = get_python_path,
            },
          }

          dap.configurations.java = {
            {
              type = "java",
              request = "attach",
              name = "Debug (Attach) - Remote",
              hostName = "127.0.0.1",
              port = 5005,
            },
          }
        end,
      })

      -- apply suggestions from catppuccin theme
      local sign = vim.fn.sign_define
      sign("DapBreakpoint", { text = "●", texthl = "DapBreakpoint", linehl = "DapBreakpointLinehl", numhl = "" })
      sign("DapStopped", { text = "", texthl = "Error", linehl = "DapStoppedLinehl", numhl = "" })
      sign("DapBreakpointCondition", { text = "●", texthl = "DapBreakpointCondition", linehl = "", numhl = "" })
      sign("DapLogPoint", { text = "◆", texthl = "DapLogPoint", linehl = "", numhl = "" })
    end,
    -- stylua: ignore
    keys = {
      { "<leader>bb", vim.cmd.DapToggleBreakpoint, desc = "Toggle Breakpoint" },
      { "<leader>bf", function() require("dap").list_breakpoints() end, desc = "List Breakpoints", },
      { "<leader>bc", function() require("dap").clear_breakpoints() end, desc = "Clear Breakpoints", },

      { "<leader>dc", vim.cmd.DapContinue, desc = "Start / Continue" },
      { "<leader>dj", function() require("dap").step_over() end, desc = "Step Over", },
      { "<leader>dk", function() require("dap").step_into() end, desc = "Step Into", },
      { "<leader>do", function() require("dap").step_out() end, desc = "Step Out", },
      { "<leader>dd", function() require("dap").disconnect() end, desc = "Disconnect", },
      { "<leader>dr", function() require("dap").restart() end, desc = "Restart", },

      { "<leader>du", function() require("dapui").toggle({}) end, desc = "Toggle UI", },
      { "<leader>dt", function() require("dap.repl").toggle() end, desc = "Toggle REPL", },
    },
    dependencies = {
      "williamboman/mason.nvim",
      {
        "mfussenegger/nvim-dap",
        config = function()
          local dap, dapui = require("dap"), require("dapui")
          dap.listeners.after.event_initialized["dapui_config"] = function()
            dapui.open()
          end
          dap.listeners.before.event_terminated["dapui_config"] = function()
            dapui.close()
          end
          dap.listeners.before.event_exited["dapui_config"] = function()
            dapui.close()
          end
        end,
      },
      {
        "rcarriga/nvim-dap-ui",
        opts = {
          -- stylua: ignore
          layouts = {
            {
              elements = {
                { id = "stacks", size = 0.15, },
                { id = "repl", size = 0.05, },
                { id = "scopes", size = 0.40, },
                { id = "watches", size = 0.40, },
              },
              position = "left",
              size = 40,
            },
            {
              elements = {
                { id = "console", size = 1, },
              },
              position = "bottom",
              size = 10,
            },
          },
        },
      },
      { "theHamsta/nvim-dap-virtual-text", config = true },
    },
  },
}