Neovim Setup (MacOS)

brew install neovim

curl -LO https://github.com/neovim/neovim/releases/download/nightly/nvim-macos.tar.gz tar xzf nvim-macos.tar.gz ./nvim-osx64/bin/nvim

require('options');
require('config');
require('plugins');

-------------------- HELPERS ------------------------------

local scopes = {o = vim.o, b = vim.bo, w = vim.wo}

local function opt(scope, key, value)
  scopes[scope][key] = value
  if scope ~= 'o' then scopes['o'][key] = value end
end

-------------------- OPTIONS -------------------------------
local indent = 4
opt('b', 'expandtab', true)                           -- Use spaces instead of tabs
opt('b', 'shiftwidth', indent)                        -- Size of an indent
opt('b', 'smartindent', true)                         -- Insert indents automatically
opt('b', 'tabstop', indent)                           -- Number of spaces tabs count for
opt('o', 'completeopt', 'menuone,noinsert,noselect')  -- Completion options (for deoplete)
opt('o', 'hidden', true)                              -- Enable modified buffers in background
opt('o', 'ignorecase', true)                          -- Ignore case
opt('o', 'joinspaces', false)                         -- No double spaces with join after a dot
opt('o', 'scrolloff', 4 )                             -- Lines of context
opt('o', 'shiftround', true)                          -- Round indent
opt('o', 'sidescrolloff', 8 )                         -- Columns of context
opt('o', 'smartcase', true)                           -- Don't ignore case with capitals
opt('o', 'splitbelow', true)                          -- Put new windows below current
opt('o', 'splitright', true)                          -- Put new windows right of current
opt('o', 'termguicolors', true)                       -- True color support
opt('o', 'wildmode', 'list:longest')                  -- Command-line completion mode
opt('w', 'list', true)                                -- Show some invisible characters (tabs...)
opt('w', 'number', true)                              -- Print line number
opt('w', 'relativenumber', false)                     -- Relative line numbers
opt('w', 'wrap', false)                               -- Disable line wrap
opt('o', 'swapfile', false)                           -- Disable swapfile
opt('o', 'history', 1000)
opt('o', 'autoread', true)
opt('o', 'backup', false)
opt('o', 'writebackup', false)
opt('w', 'cursorline', true)
opt('o', 'pumheight', 10)
opt('o', 'fileencoding', 'utf-8')
opt('o', 'cmdheight', 2)
opt('o', 'mouse', 'a')
opt('o', 'updatetime', 50)
--opt('o', 'timeoutlen', 100)
opt('o', 'clipboard', 'unnamedplus')
opt('o', 'wildmenu', true)
opt('o', 'wildmode', 'full')
opt('o', 'lazyredraw', true)
opt('o', 'signcolumn', 'yes:1')
opt('o', 'background', 'dark')
opt('o', 'synmaxcol', 200)                           -- syntax file is slow,
opt('o', 'foldlevelstart', 99)                       -- no fold closed


----------------------- DISABLE BUILT-IN PLUGINS -------------------------

local disabled_built_ins = {
    "netrw",
    "netrwPlugin",
    "netrwSettings",
    "netrwFileHandlers",
    "gzip",
    "zip",
    "zipPlugin",
    "tar",
    "tarPlugin",
    "getscript",
    "getscriptPlugin",
    "vimball",
    "vimballPlugin",
    "2html_plugin",
    "logipat",
    "rrhelper",
    "spellfile_plugin",
    "matchit"
}

for _, plugin in pairs(disabled_built_ins) do
    vim.g["loaded_" .. plugin] = 1
end

-------------------- HELPERS ------------------------------

local cmd = vim.cmd  -- to execute Vim commands e.g. cmd('pwd')
local g = vim.g      -- a table to access global variables

local function map(mode, lhs, rhs, opts)
    local options = {noremap = true}
    if opts then options = vim.tbl_extend('force', options, opts) end
    vim.api.nvim_set_keymap(mode, lhs, rhs, options)
end

-------------------- CONFIG -------------------------------
g['mapleader'] = ' ' -- leader key
g['maplocalleader'] = ' ' -- leader key

g['node_host_prog'] = vim.call('system', 'which neovim-node-host | tr -d "\n"')

-- register
g['peekup_paste_before'] = '<leader>P'
g['peekup_paste_after'] = '<leader>p'

cmd [[au TextYankPost * silent! lua vim.highlight.on_yank {on_visual=false, timeout=200}]]

-- Remove trailing space
cmd [[autocmd InsertLeavePre * :%s/\s\+$//e]]

-------------------- MAPPINGS -------------------------------

map('n', '<Leader>sv', ':source $MYVIMRC<CR>')

map('n', '<Space>', '<Nop>', { noremap = true, silent = true })

-- <Tab> to navigate the completion menu
map('i', '<S-Tab>', 'pumvisible() ? "\\<C-p>" : "\\<Tab>"', {expr = true})
map('i', '<Tab>', 'pumvisible() ? "\\<C-n>" : "\\<Tab>"', {expr = true})

map('n', '\\', '<cmd>noh<CR>')    -- Clear highlights

map('n', '<Leader>j', ':j<CR>')
map('n', '<Leader>J', ':j!<CR>')

map('n', '<Leader>w', ':w<CR>')

-- keep visual selection after indenting
map('v', '>', '>gv');
map('v', '<', '<gv');

-- copy file path
map('n', '<Leader>cp', ':let @*=expand("%")<CR>')

map('n', '<S-u>', '<C-u>')
map('n', '<S-d>', '<C-d>')

map('n', 'qo', ':only<CR>')

map('', '<C-S-Left>', ':vertical resize -5<CR>')
map('', '<C-S-Right>', ':vertical resize +5<CR>')
map('', '<C-S-Up>', ':resize +5<CR>')
map('', '<C-S-Down>', ':resize -5<CR>')

-- switch window using hjkl
map('n', '<S-h>', '<C-w>h')
map('n', '<S-j>', '<C-w>j')
map('n', '<S-k>', '<C-w>k')
map('n', '<S-l>', '<C-w>l')

-- move selection using jk
map('v', '<S-j>', ':m\'>+<CR>gv=gv')
map('v', '<S-k>', ':m-2<CR>gv=gv')

-- escape visual selection
map('v', ';;', '<Esc>')

-- disable recording macros
map('n', 'q', '<Nop>')
map('n', 'Q', '<Nop>')

map('n', 'qq', ':q<CR>')
map('n', 'QQ', ':q!<CR>')

-- paste on selection
map('x', 'p', [["_dP]])

-------------------- PLUGIN MANAGER ------------------------------

local lazypath = vim.fn.stdpath("data") .. "/lazy/lazy.nvim"
if not vim.loop.fs_stat(lazypath) then
  vim.fn.system({
    "git",
    "clone",
    "--filter=blob:none",
    "--single-branch",
    "https://github.com/folke/lazy.nvim.git",
    lazypath,
  })
end
vim.opt.runtimepath:prepend(lazypath)

-------------------- PLUGINS ------------------------------

require('lazy').setup({    -- Packer can manage itself as an optional plugin
    -- lsp
    'neovim/nvim-lspconfig',
    'williamboman/mason.nvim',
    'williamboman/mason-lspconfig.nvim',

    -- utilities. autocomplete, surround, pair, etc ...
    {
        'echasnovski/mini.nvim',
        config = function()
            require('mini.align').setup()
            require('mini.comment').setup()
            require('mini.completion').setup()
            require('mini.fuzzy').setup()
            require('mini.jump').setup()
            require('mini.jump2d').setup()
            require('mini.misc').setup()
            require('mini.pairs').setup()
            require('mini.statusline').setup()
            require('mini.surround').setup()
            require('mini.trailspace').setup()
            require('mini.ai').setup()
        end
    },

    -- Useful status updates for LSP
    {
        'j-hui/fidget.nvim',
        config = true,
    },

    { -- Highlight, edit, and navigate code
        'nvim-treesitter/nvim-treesitter',
        build = function()
            pcall(require('nvim-treesitter.install').update { with_sync = true })
        end,
        config = function()
            require('nvim-treesitter.configs').setup({
                sync_install = false,
                auto_install = true,
                highlight = {
                    enable = true,
                    additional_vim_regex_highlighting = false,
                },
                indent = {
                    enable = true,
                },
                autotag = {
                    enable = true,
                }
            })

            -- folding with treesitter
            vim.opt.foldmethod = "expr"
            vim.opt.foldexpr = "nvim_treesitter#foldexpr()"
        end
    },

    -- Git related plugins
    {
        'f-person/git-blame.nvim',
        cmd = 'GitBlameToggle',
        keys = { { '<Leader>gb', '<cmd>GitBlameToggle<CR>' } },
        config = function()
            vim.g['gitblame_date_format'] = '%r' -- relative date
            vim.g['gitblame_enabled'] = 0 -- default disabled
        end
    },

    -- theme
    {
        'ellisonleao/gruvbox.nvim',
        config = function()
            require('gruvbox').setup({
                contrast = 'hard',
                transparent_mode = true,
            })
            vim.cmd('colorscheme gruvbox')
        end,
    },

    -- Detect tabstop and shiftwidth automatically
    'tpope/vim-sleuth',

    -- Fuzzy Finder (files, lsp, etc)
    {
        'nvim-telescope/telescope.nvim',
        branch = '0.1.x',
        dependencies = { 'nvim-lua/plenary.nvim' },
        keys = {
            { '<Leader>fl', '<cmd>Telescope current_buffer_fuzzy_find theme=get_ivy layout_config={height=0.5}<CR>' },
            { '<Leader>ff', '<cmd>Telescope find_files theme=get_ivy layout_config={height=0.5}<CR>' },
            { '<Leader>fg', '<cmd>Telescope live_grep theme=get_ivy layout_config={height=0.5}<CR>' },
            { '<Leader>fb', '<cmd>Telescope buffers theme=get_ivy layout_config={height=0.5}<CR>' },
            { '<Leader>fh', '<cmd>Telescope help_tags theme=get_ivy layout_config={height=0.5}<CR>' },
            { '<Leader>fv', '<cmd>Telescope git_files theme=get_ivy layout_config={height=0.5}<CR>' },
            { '<Leader>fp', '<cmd>Telescope planets theme=get_ivy layout_config={height=0.5}<CR>' },
            { '<Leader>fk', '<cmd>Telescope keymaps theme=get_ivy layout_config={height=0.5}<CR>' },
            { '<Leader>fc', '<cmd>Telescope builtin theme=get_ivy layout_config={height=0.5}<CR>' },
        },
        config = {
            defaults = {
                mappings = {
                    i = {
                        ['<C-u>'] = false,
                        ['<C-d>'] = false,
                    },
                },
            },
        }
    },

    -- Fuzzy Finder Algorithm which requires local dependencies to be built. Only load if `make` is available
    {
        'nvim-telescope/telescope-fzf-native.nvim',
        dependencies = { 'nvim-telescope/telescope.nvim' },
        build = 'make',
        cond = vim.fn.executable 'make' == 1,
        config = function()
            require('telescope').load_extension('fzf');
        end,
    },

    -- improve default vim ui. e.g. code actions
    {
        'stevearc/dressing.nvim',
        event = 'VeryLazy',
    },

    -- quick fix list
    {'kevinhwang91/nvim-bqf', ft = 'qf'},

    -- search and replace
    {
        'windwp/nvim-spectre',
        dependencies = {
            'nvim-lua/plenary.nvim'
        },
        keys = {
            { '<Leader>sr', '<cmd>lua require("spectre").open()<CR>' },
            { '<Leader>sw', '<cmd>lua require("spectre").open_visual({select_word=true})<CR>' },
            { '<Leader>sp', '<cmd>lua require("spectre").open_file_search()<CR>' },
        },
        config = true,
    },

    -- marks
    {
        'ThePrimeagen/harpoon',
        dependencies = { 'nvim-lua/plenary.nvim' },
        keys = {
            { '<Leader>ha', '<cmd>lua require("harpoon.mark").add_file()<CR>' },
            { '<Leader>ht', '<cmd>lua require("harpoon.ui").toggle_quick_menu()<CR>' },
            { '<Leader>hn', '<cmd>lua require("harpoon.ui").nav_next()<CR>' },
            { '<Leader>hp', '<cmd>lua require("harpoon.ui").nav_prev()<CR>' },
        }
    },

    -- file explorer
    {
        'nvim-tree/nvim-tree.lua',
        cmd = 'NvimTreeFindFileToggle',
        keys = { { '<Leader>e', '<cmd>NvimTreeFindFileToggle<CR>' } },
        dependencies = {
            'nvim-tree/nvim-web-devicons', -- optional, for file icons
        },
        tag = 'nightly', -- optional, updated every week. (see issue #1193)
        config = {
            respect_buf_cwd = true,
            sort_by = 'case_sensitive',
            view = {
                adaptive_size = true,
                mappings = {
                    list = {
                        { key = 'u', action = 'dir_up' },
                    },
                },
            },
            renderer = {
                group_empty = true,
            },
            filters = {
                dotfiles = true,
            },
        },
    },

    -- startup page
    {
        'mhinz/vim-startify',
        lazy = false,
        keys = { { '<Leader>S', '<cmd>Startify<CR>' } },
        config = function()
            vim.g['startify_lists'] = {{type = 'bookmarks', header = {'Bookmarks'}}}
            vim.g['startify_bookmarks'] = {
                { i = '~/.config/nvim/init.lua' },
                { p = '~/.config/nvim/lua/plugins.lua' },
                { c = '~/.config/nvim/lua/config.lua' },
                { o = '~/.config/nvim/lua/options.lua' },
                { s = '~/.config/nvim/after/plugin' },
                { z = '~/.zshrc' },
                { g = '~/.gitconfig' },
                { t = '~/.tmux.conf'},
            }
        end,
    },

    -- startup time
    {
        'dstein64/vim-startuptime',
        cmd = "StartupTime",
    },
    -- jk to escape
    {
        'max397574/better-escape.nvim',
        config = true,
    },
    -- case convert
    {
        'tpope/vim-abolish',
        event = 'VeryLazy',
    }
})

local status_ok, mason, mason_lspconfig, lspconfig

status_ok, mason = pcall(require, 'mason')
if not status_ok then
  return
end

status_ok, mason_lspconfig = pcall(require, 'mason-lspconfig')
if not status_ok then
  return
end

status_ok, lspconfig = pcall(require, 'lspconfig')
if not status_ok then
  return
end

-- Use an on_attach function to only map the following keys
-- after the language server attaches to the current buffer
local on_attach = function(_, bufnr)
  -- Enable completion triggered by <c-x><c-o>
  vim.api.nvim_buf_set_option(bufnr, 'omnifunc', 'v:lua.vim.lsp.omnifunc')

  -- Mappings.
  -- See `:help vim.lsp.*` for documentation on any of the below functions
  local bufopts = { noremap=true, silent=true, buffer=bufnr }
  vim.keymap.set('n', 'gD', vim.lsp.buf.declaration, bufopts)
  vim.keymap.set('n', 'gd', vim.lsp.buf.definition, bufopts)
  vim.keymap.set('n', 'K', vim.lsp.buf.hover, bufopts)
  vim.keymap.set('n', 'gi', vim.lsp.buf.implementation, bufopts)
  vim.keymap.set('n', '<C-k>', vim.lsp.buf.signature_help, bufopts)
  vim.keymap.set('n', '<Leader>wa', vim.lsp.buf.add_workspace_folder, bufopts)
  vim.keymap.set('n', '<Leader>wr', vim.lsp.buf.remove_workspace_folder, bufopts)
  vim.keymap.set('n', '<Leader>wl', function()
    print(vim.inspect(vim.lsp.buf.list_workspace_folders()))
  end, bufopts)
  vim.keymap.set('n', '<Leader>D', vim.lsp.buf.type_definition, bufopts)
  vim.keymap.set('n', '<Leader>rn', vim.lsp.buf.rename, bufopts)
  vim.keymap.set('n', '<Leader>ca', vim.lsp.buf.code_action, bufopts)
  vim.keymap.set('n', 'gr', vim.lsp.buf.references, bufopts)
  vim.keymap.set('n', '<Leader>f', function() vim.lsp.buf.format { async = true } end, bufopts)
end

mason.setup()
mason_lspconfig.setup({
  ensure_installed = { 'sumneko_lua' },
  automatic_installation = true
})
mason_lspconfig.setup_handlers({
  function (server_name)
    lspconfig[server_name].setup {
      on_attach = on_attach
    }
  end,
  ['sumneko_lua'] = function ()
    lspconfig.sumneko_lua.setup {
      settings = {
        Lua = {
          diagnostics = {
            globals = { 'vim' }
          }
        }
      }
    }
  end,
})