nixos/modules/home-manager/neovim/init.lua

-- set leader keys
vim.g.mapleader = ' '
vim.g.maplocalleader = ' '

-- highlight as you search
vim.opt.hlsearch = true
vim.keymap.set('n', '<Esc>', '<cmd>nohlsearch<CR>')

-- preview substitutions live in preview window
vim.opt.inccommand = 'split'

-- prevent cursor from hitting top or bottom of screen
vim.opt.scrolloff = 10

-- line numbers
vim.wo.number = true
vim.wo.relativenumber = true

-- Indent stuff
vim.o.expandtab = true
vim.o.smartindent = true
vim.o.autoindent = true
vim.o.tabstop = 2
vim.o.softtabstop = 2
vim.o.shiftwidth = 2

-- wrapped lines are visually indented
vim.o.breakindent = true

-- save undo history
vim.o.undofile = true

-- case insensitive search unless capitalized
vim.o.ignorecase = true
vim.o.smartcase = true

-- keep on signcolumn
vim.wo.signcolumn = 'yes'

-- decrease update time
vim.o.updatetime = 250
vim.o.timeoutlen = 300

-- better completion experience
vim.o.completeopt = 'menu,preview,noselect'

-- better term colors
vim.o.termguicolors = true

-- clean up netrw
vim.g.netrw_liststyle = 0
vim.g.netrw_banner = 0

-- Basic Keymaps
-- improves C-u and C-d by centering on scroll
vim.keymap.set('n', '<C-u>', '<C-u>zz', { desc = 'Scroll Up' })
vim.keymap.set('n', '<C-d>', '<C-d>zz', { desc = 'Scroll Down' })

-- improved search by centering on results
vim.keymap.set('n', 'n', 'nzzzv', { desc = 'Next Search Result' })
vim.keymap.set('n', 'N', 'Nzzzv', { desc = 'Previous Search Result' })

-- diagnostics
vim.keymap.set('n', '<leader>d', vim.diagnostic.open_float, { desc = 'Open floating diagnostic message' })

-- clipboard binds
vim.keymap.set({"v", "x", "n"}, '<leader>y', '"+y', { noremap = true, silent = true, desc = 'Yank to clipboard' })
vim.keymap.set({"n", "v", "x"}, '<leader>Y', '"+yy', { noremap = true, silent = true, desc = 'Yank line to clipboard' })
vim.keymap.set({'n', 'v', 'x'}, '<leader>p', '"+p', { noremap = true, silent = true, desc = 'Paste from clipboard' })
vim.keymap.set('i', '<C-p>', '<C-r><C-p>+', { noremap = true, silent = true, desc = 'Paste from clipboard from within insert mode' })
vim.keymap.set("x", "<leader>P", '"_dP', { noremap = true, silent = true, desc = 'Paste over selection without erasing unnamed register' })

-- Plugins
vim.pack.add({
  { src = 'https://github.com/vague-theme/vague.nvim' },
  { src = 'https://github.com/miikanissi/modus-themes.nvim' },
  { src = 'https://github.com/nvim-treesitter/nvim-treesitter' },
  { src = 'https://github.com/nvim-mini/mini.pick' },
  { src = 'https://github.com/nvim-mini/mini.extra' },
  { src = 'https://github.com/nvim-mini/mini.icons' },
  { src = 'https://github.com/nvim-mini/mini.notify' },
  { src = 'https://github.com/nvim-mini/mini.pairs' },
  { src = 'https://github.com/nvim-mini/mini.surround' },
  { src = 'https://github.com/neovim/nvim-lspconfig' },
  { src = 'https://github.com/stevearc/oil.nvim' },
  { src = 'https://github.com/saghen/blink.cmp', version = vim.version.range('1.*') },
})

-- Theme (vague)
vim.cmd('colorscheme modus')

-- Blink
require('blink.cmp').setup({
  signature = { enabled = true }
})

-- Oil
require('oil').setup()

-- Mini
require('mini.icons').setup()
require('mini.pick').setup()
require('mini.extra').setup()
require('mini.notify').setup()
require('mini.pairs').setup()
require('mini.surround').setup()
vim.keymap.set('n', '<leader>ff', MiniPick.builtin.files, { desc = 'Find Files' })
vim.keymap.set('n', '<leader>fg', MiniPick.builtin.grep_live, { desc = 'Grep Files' })

-- Oil
vim.keymap.set('n', '<leader>fe', '<CMD>Oil<CR>', { desc = 'Explore Files' })

-- LSP
-- global on_attach
local function lsp_on_attach(client, bufnr)
  -- utility function for LSP keymaps
  local nmap = function(keys, func, desc)
    vim.keymap.set('n', keys, func, { buffer = bufnr, desc = desc })
  end

  -- if client:supports_method('textDocument/completion') then
  --   local chars = {}; for i = 32, 126 do table.insert(chars, string.char(i)) end
  --   client.server_capabilities.completionProvider.triggerCharacters = chars
  --
  --   vim.lsp.completion.enable(true, client.id, bufnr, {autotrigger = true})
  -- end

  nmap('<leader>rn', vim.lsp.buf.rename, 'Rename')
  nmap('<leader>ca', vim.lsp.buf.code_action, 'Code Actions')
  nmap('gd', vim.lsp.buf.definition, 'Goto Definition')

  nmap('gr', function() MiniExtra.pickers.lsp({ scope = 'references' }) end, 'Goto References')
  nmap('gI', function() MiniExtra.pickers.lsp({ scope = 'implementation' }) end, 'Goto Implementation')
  nmap('<leader>ds', function() MiniExtra.pickers.lsp({ scope = 'document_symbol' }) end, 'Document Symbols')
  nmap('<leader>ws', function() MiniExtra.pickers.lsp({ scope = 'workspace_symbol_live' }) end, 'Workspace Symbols')

  nmap('<leader>D', vim.lsp.buf.type_definition, 'Goto Type Definition')
  nmap('gD', vim.lsp.buf.declaration, 'Goto Declaration')

  nmap('K', vim.lsp.buf.hover, 'Hover Documentation')
  nmap('<C-K>', vim.lsp.buf.signature_help, 'Signature Documentation')
end

vim.lsp.config('*', {
  on_attach = lsp_on_attach
})

-- Langauges
vim.lsp.config('lua_ls', {
  settings = {
    Lua = {
      diagnostics = {
        globals = { 'vim' },
      },
      workspace = {
        library = vim.api.nvim_get_runtime_file("", true),
        checkThirdParty = false,
      },
      runtime = {
        version = 'LuaJIT',
      },
      telemetry = {
        enable = false,
      },
    },
  },
})

vim.lsp.enable('lua_ls')
vim.lsp.enable('vtsls')
vim.lsp.enable('cssls')
vim.lsp.enable('tailwindcss')
vim.lsp.enable('eslint')
vim.lsp.enable('gopls')
vim.lsp.enable('nixd')
vim.lsp.enable('rust_analyzer')
vim.lsp.enable('yamlls')
vim.lsp.enable('clangd')
vim.lsp.enable('hls')