dotfiles/.config/nvim/init.lua

-- === === === === === === === === Neovim Config === === === === === === === ===
--
-- A configuration for Neovim that aims to be beautiful, intuitive, and
-- pragmatic about plugin usage, while providing a developer experience on par
-- with professional IDEs. It is tuned for usage with a custom keyboard
-- layout and terminal configuration, and may not be as useful in other setups.
--
-- This configuration leverages a combination of keymaps and omnibars to give
-- quick access to a large amount of functionality in an intuitive way. Most
-- keymaps are unchanged from stock Neovim, with the notable exception of
-- remapping most `s<a-Z>` keymaps.
--
-- === === === === === === === === === === === === === === === === === === ===
--
-- Core Options
--
-- === === === === === === === === === === === === === === === === === === ===
-- Incantation to render correctly in Alacritty/tmux/macOS
vim.cmd([[
    let &t_8f = "\<Esc>[38;2;%lu;%lu;%lum"
    let &t_8b = "\<Esc>[48;2;%lu;%lu;%lum"
    set termguicolors
]])

-- File options
vim.opt.wrap = false
vim.opt.encoding = "UTF-8"
vim.opt.hlsearch = true
vim.opt.spell = true
vim.opt.spelllang = "en_us"

-- Display options
vim.opt.pumheight = 15
vim.opt.laststatus = 2
vim.opt.showtabline = 2
vim.opt.showcmd = true
vim.opt.cmdheight = 0
vim.opt.number = true
vim.opt.relativenumber = true

vim.opt.splitbelow = true
vim.opt.splitright = true

vim.opt.expandtab = true
vim.opt.tabstop = 4
vim.opt.shiftwidth = 4

-- === === === === === === === === === === === === === === === === === === ===
--
-- Leader
--
-- === === === === === === === === === === === === === === === === === === ===
vim.keymap.set({'n', 'v'}, 's', '<Nop>', { noremap = true, silent = true })
vim.keymap.set({'n', 'v'}, 'S', '<Nop>', { noremap = true, silent = true })
vim.g.mapleader = 's'
vim.g.maplocalleader = vim.g.mapleader

-- === === === === === === === === === === === === === === === === === === ===
--
-- Lazy.nvim Configuration
--
-- `lazy.nvim` is a modern plugin manager for Neovim.
--
-- === === === === === === === === === === === === === === === === === === ===
-- Bootstrapping `lazy`, as directed by GitHub docs:
-- https://github.com/folke/lazy.nvim#-installation
local lazypath = vim.fn.stdpath("data") .. "/lazy/lazy.nvim"
---@diagnostic disable-next-line: undefined-field
if not vim.loop.fs_stat(lazypath) then
    vim.fn.system({
        "git", "clone", "--filter=blob:none",
        "https://github.com/folke/lazy.nvim.git", "--branch=stable", lazypath
    })
end
vim.opt.rtp:prepend(lazypath)
-- Add custom plugins to the runtimepath via lazy.
local custom_runtime_path_root = vim.fn.stdpath("config") .. "/custom"
local custom_runtime_paths = {}
for _, filename in pairs(vim.split(vim.fn.glob(custom_runtime_path_root .. "/*"),
    "\n")) do
    table.insert(custom_runtime_paths, filename)
end
-- Load plugins
require("lazy").setup("plugins", {
    performance = { rtp = { paths = custom_runtime_paths } },
    change_detection = { enabled = false },
    defaults = { lazy = false }
})
-- === === === === === === === === === === === === === === === === === === ===
--
-- Keymaps
--
-- === === === === === === === === === === === === === === === === === === ===
-- Use `Alt-Arrow` to navigate between panes
vim.keymap.set("i", "<A-left>", "<C-\\><C-N><C-w>W")
vim.keymap.set("i", "<A-right>", "<C-\\><C-N><C-w>w")
vim.keymap.set("i", "<S-A-left>", "<C-\\><C-N>:tabnext<CR>")
vim.keymap.set("i", "<S-A-right>", "<C-\\><C-N>:tabprevious<CR>")
vim.keymap.set("n", "<A-left>", "<C-w>W")
vim.keymap.set("n", "<A-right>", "<C-w>w")
vim.keymap.set("n", "<S-A-left>", ":tabnext<CR>")
vim.keymap.set("n", "<S-A-right>", ":tabprevious<CR>")
-- Folds toggled by homerow roll
vim.keymap.set("n", "sr", ": normal za<CR>")
-- Buffer actions
vim.keymap.set("n", "SV", ":vsp<CR>")
vim.keymap.set("n", "SQ", ":q<CR>")
vim.keymap.set("n", "SH", ":noh<CR>")
-- Yank to system clipboard
vim.keymap.set({ "n", 'v' }, "Y", "\"+y")
-- Yank file properties to system clipboard
local yank_filename = function(full, line)
    local filename = vim.fn.expand("%")
    if full then filename = vim.fn.expand("%:p") end
    if line then filename = filename .. ":" .. vim.api.nvim_win_get_cursor(0)[1] end
    vim.fn.setreg("+", filename)
end
vim.keymap.set("n", "Syan", function() yank_filename(true, false) end)
vim.keymap.set("n", "Syal", function() yank_filename(true, true) end)
vim.keymap.set("n", "Syrn", function() yank_filename(false, false) end)
vim.keymap.set("n", "Syrl", function() yank_filename(false, true) end)
vim.keymap.set("n", "Syf", function() yank_filename(false, false) end)
-- === === === === === === === === === === === === === === === === === === ===
--
-- Language Servers
--
-- === === === === === === === === === === === === === === === === === === ===
-- See also configurations in `lsp/*.lua` and `custom/proj-conf/`
vim.lsp.config("*", {
    cmd_cwd = vim.fn.expand("~"),
    root_markers = { ".git" },
})
-- Enable all language servers with extant configurations
for _, filename in pairs(vim.split(io.popen("ls -a " .. vim.fn.stdpath("config")
    .. "/lsp"):read("*a"), "\n")) do
    if filename:match(".lua$") ~= nil then
        vim.lsp.enable(filename:sub(1, -5))
    end
end

-- LSP Keymaps
vim.api.nvim_create_autocmd("LspAttach", {
    callback = function(_)
        vim.keymap.set("n", "SR", vim.lsp.buf.rename)
        vim.keymap.set("n", "Sx", vim.lsp.buf.code_action)
        vim.keymap.set("n", "<Space>", vim.lsp.buf.hover)
        vim.keymap.set("n", "SI", function()
            local diagnostic_config = vim.diagnostic.config()
            if (vim.lsp.inlay_hint.is_enabled()) then
                vim.lsp.inlay_hint.enable(false)
                vim.diagnostic.config({
                    virtual_lines = {
                        current_line = true,
                        ---@diagnostic disable-next-line: need-check-nil, undefined-field
                        format = diagnostic_config.format
                    }
                })
            else
                vim.lsp.inlay_hint.enable(true)
                vim.diagnostic.config({
                    virtual_lines = true,
                    ---@diagnostic disable-next-line: need-check-nil, undefined-field
                    format = diagnostic_config.format
                })
            end
        end)
    end
})