nvim_dotfiles/lua/plugins/debug.lua

-- debug.lua
--
-- Shows how to use the DAP plugin to debug your code.
--
-- Primarily focused on configuring the debugger for Go, but can
-- be extended to other languages as well. That's why it's called
-- kickstart.nvim and not kitchen-sink.nvim ;)

return {
    -- NOTE: Yes, you can install new plugins here!
    'mfussenegger/nvim-dap',
    -- NOTE: And you can specify dependencies as well
    dependencies = {
        -- Creates a beautiful debugger UI
        'rcarriga/nvim-dap-ui',

        -- Required dependency for nvim-dap-ui
        'nvim-neotest/nvim-nio',

        -- Installs the debug adapters for you
        'mason-org/mason.nvim',
        'jay-babu/mason-nvim-dap.nvim',

        -- Add your own debuggers here
        -- 'leoluz/nvim-dap-go',
        "jbyuki/one-small-step-for-vimkind"
    },
    keys = {
        -- Basic debugging keymaps, feel free to change to your liking!
        {
            '<F5>',
            function()
                require('dap').step_into()
            end,
            desc = 'Debug: Step Into',
        },
        {
            '<F6>',
            function()
                require('dap').step_over()
            end,
            desc = 'Debug: Step Over',
        },
        {
            '<F7>',
            function()
                require('dap').step_out()
            end,
            desc = 'Debug: Step Out',
        },
        {
            '<F8>',
            function()
                require('dap').continue()
            end,
            desc = 'Debug: Start/Continue',
        },
        -- Toggle to see last session result. Without this, you can't see session output in case of unhandled exception.
        {
            '<F9>',
            function()
                require('dapui').toggle()
            end,
            desc = 'Debug: See last session result.',
        },
        {
            '<leader>Db',
            function()
                require('dap').toggle_breakpoint()
            end,
            desc = '[D]ebug: Toggle [b]reakpoint',
        },
        {
            '<leader>DB',
            function()
                require('dap').set_breakpoint(vim.fn.input 'Breakpoint condition: ')
            end,
            desc = '[D]ebug: Set [B]reakpoint condition',
        },
        {
            "<leader>Dl",
            function()
                require("osv").launch({ port = 8086 })
            end,
            desc = "[D]ebug [l]aunch"
        },
        {
            "<leader>Dh",
            function()
                require("dap.ui.widgets").hover()
            end,
            desc = "[D]ebug [h]over"
        }

        -- vim.keymap.set('n', '<leader>Dl', function()
        --     require "osv".launch({ port = 8086 })
        -- end, { noremap = true })
    },
    config = function()
        local dap = require 'dap'
        local dapui = require 'dapui'

        require('mason-nvim-dap').setup {
            -- Makes a best effort to setup the various debuggers with
            -- reasonable debug configurations
            automatic_installation = true,

            -- You can provide additional configuration to the handlers,
            -- see mason-nvim-dap README for more information
            handlers = {
                function(config)
                    require("mason-nvim-dap").default_setup(config)
                end
            },

            -- You'll need to check that you have the required things installed
            -- online, please don't ask me how to install them :)
            ensure_installed = {
                -- Update this to ensure that you have the debuggers for the langs you want
                "firefox_debug_adapter",
                "codelldb",
                "local-lua-debugger-vscode"
            },
        }

        -- Dap UI setup
        -- For more information, see |:help nvim-dap-ui|
        dapui.setup {
            -- Set icons to characters that are more likely to work in every terminal.
            --    Feel free to remove or use ones that you like more! :)
            --    Don't feel like these are good choices.
            icons = { expanded = '▾', collapsed = '▸', current_frame = '*' },
            controls = {
                icons = {
                    pause = '⏸',
                    play = '▶',
                    step_into = '⏎',
                    step_over = '⏭',
                    step_out = '⏮',
                    step_back = 'b',
                    run_last = '▶▶',
                    terminate = '⏹',
                    disconnect = '⏏',
                },
            },
        }

        -- Change breakpoint icons
        vim.api.nvim_set_hl(0, 'DapBreak', { fg = '#e51400' })
        vim.api.nvim_set_hl(0, 'DapStop', { fg = '#ffcc00' })
        local breakpoint_icons = vim.g.have_nerd_font
            and { Breakpoint = '', BreakpointCondition = '', BreakpointRejected = '', LogPoint = '', Stopped = '' }
            or { Breakpoint = '●', BreakpointCondition = '⊜', BreakpointRejected = '⊘', LogPoint = '◆', Stopped = '⭔' }
        for type, icon in pairs(breakpoint_icons) do
            local tp = 'Dap' .. type
            local hl = (type == 'Stopped') and 'DapStop' or 'DapBreak'
            vim.fn.sign_define(tp, { text = icon, texthl = hl, numhl = hl })
        end

        dap.listeners.after.event_initialized['dapui_config'] = dapui.open
        dap.listeners.before.event_terminated['dapui_config'] = dapui.close
        dap.listeners.before.event_exited['dapui_config'] = dapui.close

        -- Configure debug adapters
        dap.configurations.lua = {
            {
                type = 'nlua',
                request = 'attach',
                name = "Attach to running Neovim instance",
            }
        }

        dap.adapters.nlua = function(callback, config)
            callback({ type = 'server', host = config.host or "127.0.0.1", port = config.port or 8086 })
        end
    end,
}