syntax enable
filetype plugin indent on

colorscheme akr

set encoding=utf-8
set showcmd
set nocompatible
set nocursorline
set number
set lazyredraw
set ttyfast
set mouse=a
set t_Co=256
set shell=/bin/sh
set sessionoptions-=options

set directory=~/.vim/swap//,.

set undofile
set undodir=~/.vim/undo

set wrap
set tabstop=4 shiftwidth=4
set backspace=indent,eol,start
set linebreak

set hlsearch
set incsearch
set ignorecase
set smartcase

set wildchar=<Tab> wildmenu wildmode=full

let mapleader=","

map <leader>s  :let @/=""<CR>
map <leader>c  zz
map <leader>d  <c-]>
map <leader>h  q:

nmap <backspace> :e#<CR>
nmap f           za
nmap F           zA

" disable to override default on neovim
set noautoread

autocmd InsertEnter *   :setlocal nohlsearch
autocmd InsertLeave *   :setlocal hlsearch

autocmd FileType scheme  setlocal shiftwidth=2 tabstop=2 expandtab
autocmd FileType nix     setlocal shiftwidth=2 tabstop=2 expandtab
autocmd FileType lisp    setlocal shiftwidth=2 tabstop=2 expandtab
autocmd FileType racket  setlocal shiftwidth=2 tabstop=2 expandtab
autocmd FileType haskell setlocal shiftwidth=2 tabstop=4 softtabstop=2 shiftround expandtab
autocmd FileType pandoc  setlocal nonumber autoread
autocmd FileType pandoc  let      g:airline#extensions#whitespace#checks=['indent', 'trailing', 'long']

autocmd BufNewFile,BufRead *.tikz setlocal syntax=tex

nnoremap <C-Tab>   :bnext<CR>
nnoremap <C-S-Tab> :bprev<CR>

" select previous line on file reload, useful when cycling file extensions
autocmd BufReadPost * if line("'\"") > 1 && line("'\"") <= line("$") | execute "normal! g`\" zz" | endif
nnoremap <Tab> :CounterpointNext<CR>
nnoremap <S-Tab> :CounterpointPrevious<CR>

nnoremap <C-left>  gT
nnoremap <C-right> gt
nnoremap <space> @q
nnoremap J }
nnoremap K {

nmap <Left>  <<
nmap <Right> >>
vmap <Left>  <gv
vmap <Right> >gv

nmap <Up>   [e
nmap <Down> ]e
vmap <Up>   [egv
vmap <Down> ]egv

nnoremap <A-left>  <C-W>h
nnoremap <A-right> <C-W>l
nnoremap <A-up>    <C-W>k
nnoremap <A-down>  <C-W>j

set laststatus=2
let g:airline_theme                                   = 'akr'
let g:airline#extensions#tabline#enabled              = 1
let g:airline#extensions#tabline#show_buffers         = 1
let g:airline#extensions#tabline#show_tab_type        = 1
let g:airline#extensions#tabline#fnamemod             = ':t'
let g:airline#extensions#tabline#formatter            = 'unique_tail_improved'
let g:airline#extensions#tabline#buffer_idx_mode      = 0
let g:airline#extensions#tabline#show_close_button    = 0
let g:airline#extensions#tabline#show_splits          = 0
let g:airline#extensions#tabline#show_tab_nr          = 0
let g:airline#extensions#whitespace#mixed_indent_algo = 2

let g:gitgutter_enabled         = 0
let g:gitgutter_highlight_lines = 1

let g:goyo_width                = 90
let g:goyo_margin_top           = 1
let g:goyo_margin_bottom        = 0

nnoremap <F5> :MundoToggle<CR>
nnoremap <F6> :GitGutterToggle<CR>
nnoremap <F7> :SignatureToggleSigns<CR>
nnoremap <F8> :Goyo<CR>

nnoremap <c-p> :GFiles<CR>
nnoremap <c-b> :Buffers<CR>
nnoremap <c-t> :Tags<CR>
nnoremap <a-t> :BTags<CR>

let g:undotree_SetFocusWhenToggle = 1

let g:localvimrc_sandbox    = 0
let g:localvimrc_persistent = 2

let g:wordmotion_prefix = '<Leader>'
nmap <S-w> <Leader>w

let g:lsp_auto_enable = 0

" spinning up a language client only makes
" sense if such a client is available
if executable('cquery')
	let g:lsp_auto_enable = 1

	autocmd User lsp_setup call lsp#register_server({
		\ 'name': 'cquery',
		\ 'cmd': {server_info->['cquery']},
		\ 'root_uri': {server_info->lsp#utils#path_to_uri(lsp#utils#find_nearest_parent_file_directory(lsp#utils#get_buffer_path(), 'compile_commands.json'))},
		\ 'initialization_options': { 'cacheDirectory': '/tmp/cquery' },
		\ 'whitelist': ['c', 'cpp', 'cc'],
		\ })

	nnoremap <silent> gd :LspDefinition<CR>
	nnoremap <silent> gt :LspTypeDefinition<CR>
	nnoremap <silent> gi :LspImplementation<CR>
	nnoremap <silent> gr :LspReferences<CR>
	nnoremap <c-t> :LspWorkspaceSymbol<CR>
	nnoremap <a-t> :LspDocumentSymbol<CR>

	autocmd FileType cpp setlocal omnifunc=lsp#complete
	set completeopt=longest,menuone,preview
	" use enter to select completion item
	inoremap <expr> <CR> pumvisible() ? "\<C-y>" : "\<C-g>u\<CR>"
	" improve popup and selection behavior
	inoremap <expr> <C-n> pumvisible() ? '<C-n>' :
		\ '<C-n><C-r>=pumvisible() ? "\<lt>Down>" : ""<CR>'
	inoremap <expr> <M-,> pumvisible() ? '<C-n>' :
		\ '<C-x><C-o><C-n><C-p><C-r>=pumvisible() ? "\<lt>Down>" : ""<CR>'
	" trigger omnicompletion using <C-m> (compared to <C-n> for plain completion)
	inoremap <C-m> <C-x><C-o>

	" close documentation buffer after selecting a completion item
	autocmd CompleteDone * silent! pclose
	" close quickfix buffer after selection
	autocmd FileType qf nnoremap <buffer> <CR> <CR>:cclose<CR>
endif