-- ============================================================================
-- DAP 调试器
-- ============================================================================

return {
    {
        "mfussenegger/nvim-dap",
        dependencies = {
            "rcarriga/nvim-dap-ui",
            "nvim-neotest/nvim-nio",
            "williamboman/mason.nvim",
        },
        config = function()
            local dap = require("dap")
            local dapui = require("dapui")

            -- 断点图标
            vim.fn.sign_define("DapBreakpoint",        { text = "●", texthl = "DapBreakpoint",        linehl = "",           numhl = "" })
            vim.fn.sign_define("DapBreakpointCondition", { text = "◆", texthl = "DapBreakpointCondition", linehl = "",         numhl = "" })
            vim.fn.sign_define("DapStopped",           { text = "▶", texthl = "DapStopped",           linehl = "CursorLine", numhl = "" })

            -- dap-ui 布局
            dapui.setup({
                layouts = {
                    {
                        elements = {
                            { id = "stacks",      size = 0.25 },
                            { id = "scopes",      size = 0.25 },
                            { id = "breakpoints", size = 0.25 },
                            { id = "watches",     size = 0.25 },
                        },
                        position = "left",
                        size = 40,
                    },
                    {
                        elements = {
                            { id = "repl",    size = 0.5 },
                            { id = "console", size = 0.5 },
                        },
                        position = "bottom",
                        size = 10,
                    },
                },
            })

            -- 调试会话自动打开/关闭 UI
            dap.listeners.before.attach.dapui_config          = function() dapui.open() end
            dap.listeners.before.launch.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

            -- codelldb 适配器（Mason 安装路径）
            dap.adapters.codelldb = {
                type = "server",
                port = "${port}",
                executable = {
                    command = vim.fn.stdpath("data") .. "/mason/bin/codelldb",
                    args = { "--port", "${port}" },
                },
            }

            -- C/C++ 调试配置（非 CMake 项目，CMake 项目用 <leader>rd）
            dap.configurations.c = {
                {
                    name = "Launch",
                    type = "codelldb",
                    request = "launch",
                    program = function()
                        return vim.fn.input("可执行文件路径: ", vim.fn.getcwd() .. "/", "file")
                    end,
                    cwd = "${workspaceFolder}",
                    stopOnEntry = false,
                    args = {},
                },
            }
            dap.configurations.cpp = dap.configurations.c
        end,
    },

    -- Mason DAP 自动安装
    {
        "jay-babu/mason-nvim-dap.nvim",
        dependencies = { "williamboman/mason.nvim", "mfussenegger/nvim-dap" },
        opts = {
            ensure_installed = { "codelldb" },
        },
    },
}