" Custom Mappings
imap jj <Esc>

"---------------
" Tabs
"---------------
set tabstop=4
set softtabstop=4
set shiftwidth=4
set noexpandtab

" Use case insensitive search, except when using capital letters
set ignorecase
set smartcase

" When opening a new line and no filetype-specific indenting is enabled, keep
" the same indent as the line you're currently on. Useful for READMEs, etc.
set autoindent

" Display line numbers on the left
set number

" Increase undo limit
set history=1000

" Disable swap files
set noswapfile

" Show lines above and below cursor
set scrolloff=5

" Update every 300 ms
set updatetime=300


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


"---------------
" Plugins
"---------------
call plug#begin()
	Plug 'preservim/NERDTree'
    Plug 'Xuyuanp/nerdtree-git-plugin'
	Plug 'ntpeters/vim-better-whitespace'
	Plug 'mhinz/vim-startify'
	Plug 'neoclide/coc.nvim', {'branch': 'release'}
	Plug 'cespare/vim-toml', { 'branch': 'main' }
    Plug 'snakemake/snakemake', {'rtp': 'misc/vim'}
	Plug 'airblade/vim-gitgutter'
call plug#end()

nnoremap <leader>n :NERDTreeFocus<CR>
nnoremap <C-n> :NERDTree<CR>
nnoremap <C-t> :NERDTreeToggle<CR>
nnoremap <C-f> :NERDTreeFind<CR>

let g:NERDTreeGitStatusUseNerdFonts = 1 " you should install nerdfonts by yourself. default: 0

"---------------
"COC Config
"---------------

" Use tab for trigger completion with characters ahead and navigate.
" NOTE: Use command ':verbose imap <tab>' to make sure tab is not mapped by
" other plugin before putting this into your config.
inoremap <silent><expr> <TAB>
	\ pumvisible() ? "\<C-n>" :
	\ <SID>check_back_space() ? "\<TAB>" :
	\ coc#refresh()
inoremap <expr><S-TAB> pumvisible() ? "\<C-p>" : "\<C-h>"

function! s:check_back_space() abort
	let col = col('.') - 1
	return !col || getline('.')[col - 1]  =~# '\s'
endfunction


"---------------
"Gitgutter
"---------------
"turn off background of git sign column
highlight! link SignColumn LineNr