-- DAP plugin stack: core client, UI, inline virtual text.
-- Provides <leader>d keybindings and codelldb adapter configuration.
return {
  {
    "mfussenegger/nvim-dap",
    dependencies = {
      "rcarriga/nvim-dap-ui",
      "theHamsta/nvim-dap-virtual-text",
      "nvim-neotest/nvim-nio",
    },
    keys = {
      { "<leader>d",  "", desc = "+debug", mode = { "n", "v" } },
      { "<leader>db", function() require("dap").toggle_breakpoint() end, desc = "Toggle Breakpoint" },
      { "<leader>dB", function() require("dap").set_breakpoint(vim.fn.input("Breakpoint condition: ")) end, desc = "Conditional Breakpoint" },
      { "<leader>dc", function() require("dap").continue() end, desc = "Continue / Start" },
      { "<leader>dC", function() require("dap").run_to_cursor() end, desc = "Run to Cursor" },
      { "<leader>dg", function() require("dap").goto_() end, desc = "Go to Line (skip execution)" },
      { "<leader>di", function() require("dap").step_into() end, desc = "Step Into" },
      { "<leader>dj", function() require("dap").down() end, desc = "Frame Down" },
      { "<leader>dk", function() require("dap").up() end, desc = "Frame Up" },
      { "<leader>dl", function() require("dap").run_last() end, desc = "Run Last" },
      { "<leader>do", function() require("dap").step_out() end, desc = "Step Out" },
      { "<leader>dO", function() require("dap").step_over() end, desc = "Step Over" },
      { "<leader>dp", function() require("dap").pause() end, desc = "Pause" },
      { "<leader>dr", function() require("dap").repl.toggle() end, desc = "Toggle REPL" },
      { "<leader>ds", function() require("dap").session() end, desc = "Session Info" },
      { "<leader>dt", function() require("dap").terminate() end, desc = "Terminate" },
      { "<leader>dw", function() require("dap.ui.widgets").hover() end, desc = "Hover Widget" },
      { "<leader>du", function() require("dapui").toggle() end, desc = "Toggle DAP UI" },
      { "<leader>de", function() require("dapui").eval() end, desc = "Evaluate Expression", mode = { "n", "v" } },
    },
    config = function()
      local dap = require("dap")
      local dapui = require("dapui")

      dapui.setup()
      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

      require("nvim-dap-virtual-text").setup()

      -- Adapter: connect to codelldb running on the "remote" container.
      -- codelldb listens as a DAP server on port 13000.
      dap.adapters.codelldb = {
        type = "server",
        host = "remote",
        port = 13000,
      }

      -- Debug configurations.
      dap.configurations.cpp = {
        {
          -- Remote launch: codelldb on the remote starts the program.
          -- Source paths in debug info (/project/src/...) match the
          -- devstation's filesystem, so nvim-dap opens source files
          -- correctly when stopped at a breakpoint.
          name = "Remote launch (codelldb remote:13000)",
          type = "codelldb",
          request = "launch",
          program = "/project/build/debugapp",
          cwd = "/project",
          stopOnEntry = false,
        },
      }
      dap.configurations.c = dap.configurations.cpp
    end,
  },
}