let plug_install = 0
let autoload_plug_path = stdpath('config') . '/autoload/plug.vim'

if !filereadable(autoload_plug_path)
    silent exe '!curl -fL --create-dirs -o ' . autoload_plug_path .
     \ ' https://raw.github.com/junegunn/vim-plug/master/plug.vim'
    execute 'source ' . fnameescape(autoload_plug_path)
    let plug_install = 1
endif
unlet autoload_plug_path

call plug#begin('~/.config/nvim/plugins')

" Code development helpers {{{
Plug 'neoclide/coc.nvim', {'branch': 'release'} | Plug 'jackguo380/vim-lsp-cxx-highlight'
Plug 'SirVer/ultisnips' | Plug 'honza/vim-snippets'
Plug 'wellle/context.vim'
Plug 'dbeniamine/cheat.sh-vim'
" }}}

" Files switch, jump and grep-like tools {{{
Plug 'preservim/nerdtree' | Plug 'Xuyuanp/nerdtree-git-plugin'
Plug 'junegunn/fzf.vim'
Plug 'liuchengxu/vista.vim'
Plug 'inside/vim-search-pulse'
Plug 'mhinz/vim-startify'
" }}}

" Git integration {{{
Plug 'mhinz/vim-signify' " Mark edited lines - faster gitgutter
" }}}

" Colorschemes {{{
Plug 'jaredgorski/spacecamp'
Plug 'vim-airline/vim-airline' | Plug 'vim-airline/vim-airline-themes'
" }}}

" Other plugins (external tools, etc) {{{
Plug 'junegunn/goyo.vim'
Plug 'jez/vim-superman' "vman application
Plug 'glacambre/firenvim'
" }}}

call plug#end()

if plug_install
    PlugInstall --sync
endif
unlet plug_install

set number
set clipboard+=unnamedplus

set noshowmode
set laststatus=2

set background=dark
colorscheme spacecamp
highlight MatchParen ctermfg=yellow ctermbg=none cterm=NONE
set listchars=tab:▸\ ,trail:¬
set list
hi clear SpellBad
hi SpellBad cterm=underline


set tabstop=4
set shiftwidth=4
set softtabstop=4
set expandtab

" Ctags {{{
if isdirectory($HOME . '/.vim/tags') == 0
	:silent !mkdir -p ~/.vim/tags > /dev/null 2>&1
endif
let g:gutentags_cache_dir='~/.vim/tags'
"let g:gutentags_ctags_extra_args=['--fields=+l']

let mapleader = "\\"

inoremap jj <ESC>
inoremap jk <ESC>
inoremap :w<CR> <Esc>:w<CR>

nnoremap <leader>2 <esc>:set tabstop=2 softtabstop=2 shiftwidth=2<cr>
nnoremap <leader>4 <esc>:set tabstop=4 softtabstop=4 shiftwidth=4<cr>
nnoremap <leader>8 <esc>:set tabstop=8 softtabstop=8 shiftwidth=8<cr>

nnoremap <leader><space> :nohlsearch<cr>

let g:UltiSnipsExpandTrigger="<c-s>"
let g:UltiSnipsJumpForwardTrigger="<c-n>"
let g:UltiSnipsJumpBackwardTrigger="<c-p>"

" TextEdit might fail if hidden is not set.
set hidden

" Some servers have issues with backup files, see #649.
set nobackup
set nowritebackup

" Give more space for displaying messages.
set cmdheight=2

" Having longer updatetime (default is 4000 ms = 4 s) leads to noticeable
" delays and poor user experience.
set updatetime=300

" Don't pass messages to |ins-completion-menu|.
set shortmess+=c

" Always show the signcolumn, otherwise it would shift the text each time
" diagnostics appear/become resolved.
if has("patch-8.1.1564")
  " Recently vim can merge signcolumn and number column into one
  set signcolumn=number
else
  set signcolumn=yes
endif

" 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

" Use <c-space> to trigger completion.
if has('nvim')
  inoremap <silent><expr> <c-space> coc#refresh()
else
  inoremap <silent><expr> <c-@> coc#refresh()
endif

" Make <CR> auto-select the first completion item and notify coc.nvim to
" format on enter, <cr> could be remapped by other vim plugin
inoremap <silent><expr> <cr> pumvisible() ? coc#_select_confirm()
                              \: "\<C-g>u\<CR>\<c-r>=coc#on_enter()\<CR>"

" Use `[g` and `]g` to navigate diagnostics
" Use `:CocDiagnostics` to get all diagnostics of current buffer in location list.
nmap <silent> [g <Plug>(coc-diagnostic-prev)
nmap <silent> ]g <Plug>(coc-diagnostic-next)

" GoTo code navigation.
nmap <silent> gd <Plug>(coc-definition)
nmap <silent> gy <Plug>(coc-type-definition)
nmap <silent> gi <Plug>(coc-implementation)
nmap <silent> gr <Plug>(coc-references)

" Use K to show documentation in preview window.
nnoremap <silent> K :call <SID>show_documentation()<CR>

function! s:show_documentation()
  if (index(['vim','help'], &filetype) >= 0)
    execute 'h '.expand('<cword>')
  elseif (coc#rpc#ready())
    call CocActionAsync('doHover')
  else
    execute '!' . &keywordprg . " " . expand('<cword>')
  endif
endfunction

" Highlight the symbol and its references when holding the cursor.
autocmd CursorHold * silent call CocActionAsync('highlight')

" Symbol renaming.
nmap <leader>rn <Plug>(coc-rename)

" Formatting selected code.
xmap <leader>f  <Plug>(coc-format-selected)
nmap <leader>f  <Plug>(coc-format-selected)

augroup mygroup
  autocmd!
  " Setup formatexpr specified filetype(s).
  autocmd FileType typescript,json setl formatexpr=CocAction('formatSelected')
  " Update signature help on jump placeholder.
  autocmd User CocJumpPlaceholder call CocActionAsync('showSignatureHelp')
augroup end

" Applying codeAction to the selected region.
" Example: `<leader>aap` for current paragraph
xmap <leader>a  <Plug>(coc-codeaction-selected)
nmap <leader>a  <Plug>(coc-codeaction-selected)

" Remap keys for applying codeAction to the current buffer.
nmap <leader>ac  <Plug>(coc-codeaction)
" Apply AutoFix to problem on the current line.
nmap <leader>qf  <Plug>(coc-fix-current)

" Map function and class text objects
" NOTE: Requires 'textDocument.documentSymbol' support from the language server.
xmap if <Plug>(coc-funcobj-i)
omap if <Plug>(coc-funcobj-i)
xmap af <Plug>(coc-funcobj-a)
omap af <Plug>(coc-funcobj-a)
xmap ic <Plug>(coc-classobj-i)
omap ic <Plug>(coc-classobj-i)
xmap ac <Plug>(coc-classobj-a)
omap ac <Plug>(coc-classobj-a)

" Remap <C-f> and <C-b> for scroll float windows/popups.
if has('nvim-0.4.0') || has('patch-8.2.0750')
  nnoremap <silent><nowait><expr> <C-f> coc#float#has_scroll() ? coc#float#scroll(1) : "\<C-f>"
  nnoremap <silent><nowait><expr> <C-b> coc#float#has_scroll() ? coc#float#scroll(0) : "\<C-b>"
  inoremap <silent><nowait><expr> <C-f> coc#float#has_scroll() ? "\<c-r>=coc#float#scroll(1)\<cr>" : "\<Right>"
  inoremap <silent><nowait><expr> <C-b> coc#float#has_scroll() ? "\<c-r>=coc#float#scroll(0)\<cr>" : "\<Left>"
  vnoremap <silent><nowait><expr> <C-f> coc#float#has_scroll() ? coc#float#scroll(1) : "\<C-f>"
  vnoremap <silent><nowait><expr> <C-b> coc#float#has_scroll() ? coc#float#scroll(0) : "\<C-b>"
endif

" Use CTRL-S for selections ranges.
" Requires 'textDocument/selectionRange' support of language server.
nmap <silent> <C-s> <Plug>(coc-range-select)
xmap <silent> <C-s> <Plug>(coc-range-select)

" Add `:Format` command to format current buffer.
command! -nargs=0 Format :call CocAction('format')

" Add `:Fold` command to fold current buffer.
command! -nargs=? Fold :call     CocAction('fold', <f-args>)

" Add `:OR` command for organize imports of the current buffer.
command! -nargs=0 OR   :call     CocAction('runCommand', 'editor.action.organizeImport')

" Add (Neo)Vim's native statusline support.
" NOTE: Please see `:h coc-status` for integrations with external plugins that
" provide custom statusline: lightline.vim, vim-airline.
set statusline^=%{coc#status()}%{get(b:,'coc_current_function','')}

" Mappings for CoCList
" Show all diagnostics.
nnoremap <silent><nowait> <space>a  :<C-u>CocList diagnostics<cr>
" Manage extensions.
nnoremap <silent><nowait> <space>e  :<C-u>CocList extensions<cr>
" Show commands.
nnoremap <silent><nowait> <space>c  :<C-u>CocList commands<cr>
" Find symbol of current document.
nnoremap <silent><nowait> <space>o  :<C-u>CocList outline<cr>
" Search workspace symbols.
nnoremap <silent><nowait> <space>s  :<C-u>CocList -I symbols<cr>
" Do default action for next item.
nnoremap <silent><nowait> <space>j  :<C-u>CocNext<CR>
" Do default action for previous item.
nnoremap <silent><nowait> <space>k  :<C-u>CocPrev<CR>
" Resume latest coc list.
nnoremap <silent><nowait> <space>p  :<C-u>CocListResume<CR>

" yoink configuration
"nmap <leader>yp <plug>(YoinkPostPasteSwapBack)
"nmap <leader>yn <plug>(YoinkPostPasteSwapForward)
"nmap p <plug>(YoinkPaste_p)
"nmap P <plug>(YoinkPaste_P)

" Mapping to NERDTree
nnoremap <leader>t :NERDTreeToggle<CR>
let NERDTreeIgnore=['\.vim$', '\~$', '\.pyc$']

nnoremap <leader>ff :FZF!<CR>
nnoremap <leader>fl :Lines!<CR>
nnoremap <leader>fb :Buffers<CR>
inoremap <leader>fs <ESC>:Snippets!<CR>
nnoremap <leader>fa :Rg! <C-R><C-W><CR>

" Disable context.vim on json files
let g:context_filetype_blacklist = ["json"]

match Error /\s\+$\|DU\cPA/

function! FindAlternate()
	let l:ext = 'h'
	let l:curr_ext = expand('%:e')
	if (l:curr_ext == 'c')
		let l:ext = 'h'
	elseif (l:curr_ext == 'cpp')
		let l:ext = 'h'
	elseif (l:curr_ext == 'h')
		let l:ext = 'c'
	elseif (l:curr_ext == 'hpp')
		let l:ext = 'cpp'
	endif
	let l:file = expand('%:t:r') . '.' . l:ext
	:exec 'find ' . l:file
endfunction

nnoremap <F6> :call FindAlternate()<CR>

setglobal virtualedit=block
setglobal shiftround

let g:vim_search_pulse_mode = 'pattern'
let g:vim_search_pulse_duration = 400

let g:airline_theme = 'minimalist'
let g:airline_powerline_fonts = 1
let g:airline_stl_path_style = 'short'
let g:airline_highlighting_cache = 1

let g:startify_custom_header = ''