" Manage plugins using vim-plug
if ! filereadable(system('echo -n "${XDG_CONFIG_HOME:-$HOME/.config}/nvim/autoload/plug.vim"'))
	echo "Downloading junegunn/vim-plug to manage plugins..."
	silent !mkdir -p ${XDG_CONFIG_HOME:-$HOME/.config}/nvim/autoload/
	silent !curl "https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim" > ${XDG_CONFIG_HOME:-$HOME/.config}/nvim/autoload/plug.vim
	autocmd VimEnter * PlugInstall
endif

call plug#begin(system('echo -n "${XDG_CONFIG_HOME:-$HOME/.config}/nvim/plugged"'))
Plug 'chrisbra/Colorizer'
Plug 'junegunn/goyo.vim'
Plug 'jiangmiao/auto-pairs'
call plug#end()

" Basic options
syntax on			" Enable syntax highlighting
set number relativenumber	" Enable relative line numbers
set linebreak			" Word wrap
set wildmode=longest,list,full	" Enable file auto-complete
set splitbelow splitright	" Open splits on bottom/right instead of top/left
set hlsearch			" Highlight search hits
set ignorecase			" Case-insensitive search...
set smartcase			" ...Unless the search term is capital
set autoindent			" Keeps indentation on new lines
set mouse=a			" Because sometimes it's just easier to use the mouse
set autochdir			" Always change directory to current file

" Keybindings
 " Set leader-key to comma
let mapleader =","
 " Invoke goyo with comma-m
map <leader>m :Goyo<CR>
 " Invoke spellcheck mode with comma-o
map <leader>l :setlocal spell! spelllang=en_us<CR>
 " Invoke spellcheck mode with comma-o
map <leader>c :set cursorcolumn!<CR>
 " Send cursor to top or bottom currently visible line with ctrl-jk
" map <C-j> :call cursor(line('w$'),col('.'))<CR>
" map <C-k> :call cursor(line('w0'),col('.'))<CR>
map <C-j> <C-d>
map <C-k> <C-u>
map <C-h> 0
map <C-l> $
 " Faster split navigation (alt-hjlk, as opposed to ctrl-w + hjlk)
"map <A-h> <C-w>h
"map <A-j> <C-w>j
"map <A-k> <C-w>k
"map <A-l> <C-w>l

" Colorscheme for root and normal users (since vimrc is just symlinked to the root user's home)
if ($USER) == 'root'
	colorscheme zellner
else
	if empty($DISPLAY)
		colorscheme default
	else
		set bg=dark
		let g:gruvbox_contrast_dark = 'hard'
		colorscheme gruvbox-timmy
	endif
endif

" Behaviors exclusive to either the tty or a terminal emulator in a graphical environment
if empty($DISPLAY)
	" Clear the tty screen after exiting vim
	"autocmd QuitPre * :!clear
else
	set cursorline			" Highlight current line
	" Change the terminal emulator's window title and class name to vim
	autocmd BufEnter * :set title
	autocmd VimEnter * :silent exec "!/home/timmy/scripts/st/settitle Vim"
	autocmd VimLeave * :silent exec "!/home/timmy/scripts/st/settitle st"
	let &titleold="st"
endif

" Set the cursor on a per-mode basis
let &t_SI.="\<Esc>[6 q" " Insert mode
let &t_SR.="\<Esc>[4 q" " Replace mode
let &t_EI.="\<Esc>[2 q" " Normal mode
let &t_ti.="\<Esc>[2 q" " Cursor on startup

" Automatically deletes all trailing whitespace and newlines at end of file on save
"autocmd BufWritePre * let ccc=col('.')		" Set current cursor column
"autocmd BufWritePre * let ccl=line('.')		" Set current cursor line
"autocmd BufWritePre * %s/\s\+$//e		"	  \/
"autocmd BufWritePre * %s/\n\+\%$//e		" Remove white space
"autocmd BufWritePre *.[ch] %s/\%$/\r/e		"	  /\
"autocmd BufWritePre * call cursor(ccl,ccc)	" Move cursor to previous position

" Get rid of the pointless .viminfo files that clutter the home directory
let skip_defaults_vim=1
set viminfo=""