.vimrc

filetype plugin on
filetype indent on

syntax on

let mapleader = " "

set clipboard=unnamed  " Use system clipboard
set colorcolumn=80
set cursorline         " Highlight cursor line
set encoding=utf-8
set fileencoding=utf-8
set hlsearch           " Highlight search
set incsearch          " Incremental search
set ignorecase         " Case-insensitive search
set laststatus=2       " Always show status line
set noshowmode         " Don't show mode
set number             " Line numbers
" set relativenumber     " Relative line numbers
set ruler
set shiftwidth=2
set shortmess-=S       " Show search match index / count
set showmatch          " Highlight matching brackets
set smartcase          " Case-sensitive search if search contains uppercase
                       " characters
set smartindent
set statusline+=%{FugitiveStatusline()}
set tabstop=2

" ale
nnoremap K :ALEHover<CR>
" /ale


" lightline
" update colorscheme when system mode changes
" https://github.com/itchyny/lightline.vim/issues/680#issuecomment-2254283734
autocmd OptionSet background
      \ execute 'source' globpath(&rtp, 'autoload/lightline/colorscheme/16color.vim')
      \ | call lightline#colorscheme() | call lightline#update()
let g:lightline = {
      \ 'colorscheme': '16color',
      \ 'active': {
      \   'left': [ [ 'mode', 'paste' ],
      \             [ 'gitbranch', 'readonly', 'filename', 'modified' ] ]
      \ },
      \ 'component_function': {
      \   'gitbranch': 'FugitiveHead'
      \ },
      \ }
" /lightline


" vim-plug
" https://github.com/junegunn/vim-plug/wiki/tips#automatic-installation
let data_dir = has('nvim') ? stdpath('data') . '/site' : '~/.vim'
if empty(glob(data_dir . '/autoload/plug.vim'))
  silent execute '!curl -fLo '.data_dir.'/autoload/plug.vim --create-dirs  https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim'
  autocmd VimEnter * PlugInstall --sync | source $MYVIMRC
endif

" https://github.com/junegunn/vim-plug/wiki/tips#automatic-installation-of-missing-plugins
if empty(glob('~/.vim/autoload/plug.vim'))
  silent !curl -fLo ~/.vim/autoload/plug.vim --create-dirs
    \ https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
endif

" Run PlugInstall if there are missing plugins
autocmd VimEnter * if len(filter(values(g:plugs), '!isdirectory(v:val.dir)'))
  \| PlugInstall --sync | source $MYVIMRC
\| endif

call plug#begin()
Plug 'airblade/vim-gitgutter'
Plug 'ap/vim-css-color'
Plug 'dense-analysis/ale'
Plug 'github/copilot.vim'
Plug 'itchyny/lightline.vim'
Plug 'junegunn/fzf', { 'do': { -> fzf#install() } }
Plug 'junegunn/fzf.vim'
Plug 'preservim/nerdtree'
Plug 'preservim/vim-indent-guides'
Plug 'tpope/vim-commentary'
Plug 'tpope/vim-fugitive'
Plug 'vimpostor/vim-lumen'
call plug#end()
" /vim-plug


" ale
" https://github.com/dense-analysis/ale#completion
let g:ale_completion_enabled = 1
" /ale


" nerdtree

" https://github.com/preservim/nerdtree/blob/7.1.3/README.markdown#how-can-i-map-a-specific-key-or-shortcut-to-open-nerdtree
nnoremap <leader>n :NERDTreeFocus<CR>
nnoremap <C-n> :NERDTree<CR>
nnoremap <C-t> :NERDTreeToggle<CR>
nnoremap <C-f> :NERDTreeFind<CR>

" always show hidden files
let g:NERDTreeShowHidden = 1

" start nerdtree when vim starts with a directory argument
autocmd StdinReadPre * let s:std_in=1
autocmd VimEnter * if argc() == 1 && isdirectory(argv()[0]) && !exists('s:std_in') |
    \ execute 'NERDTree' argv()[0] | wincmd p | enew | NERDTreeFocus | execute 'cd '.argv()[0] | endif

" exit vim if nerdtree is the only window remaining in the only tab
" https://github.com/preservim/nerdtree/blob/7.1.3/README.markdown#how-can-i-close-vim-or-a-tab-automatically-when-nerdtree-is-the-last-window
autocmd BufEnter * if tabpagenr('$') == 1 && winnr('$') == 1 && exists('b:NERDTree') && b:NERDTree.isTabTree() | call feedkeys(":quit\<CR>:\<BS>") | endif

" /nerdtree