.vimrc

" Plug
call plug#begin('~/.vim/plugged')

Plug 'HerringtonDarkholme/yats.vim'
Plug 'NLKNguyen/papercolor-theme'
Plug 'Shougo/denite.nvim'
Plug 'Shougo/deoplete.nvim', { 'do': ':UpdateRemotePlugins' }
Plug 'airblade/vim-gitgutter'
Plug 'autozimu/LanguageClient-neovim', { 'branch': 'next', 'do': 'bash install.sh' }
Plug 'cespare/vim-toml'
Plug 'ecomba/vim-ruby-refactoring'
Plug 'jiangmiao/auto-pairs'
Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': './install --all' }
Plug 'junegunn/fzf.vim'
Plug 'junegunn/goyo.vim'
Plug 'junegunn/seoul256.vim'
Plug 'mattn/emmet-vim'
Plug 'mhartington/nvim-typescript', {'do': './install.sh'}
Plug 'mustache/vim-mustache-handlebars'
Plug 'neoclide/coc.nvim', {'do': './install.sh nightly'}
Plug 'ntpeters/vim-better-whitespace'
Plug 'osyo-manga/vim-over'
Plug 'scrooloose/nerdtree', { 'on':  'NERDTreeToggle' }
Plug 'tpope/vim-abolish'
Plug 'tpope/vim-commentary'
Plug 'tpope/vim-fireplace'
Plug 'tpope/vim-fugitive'
Plug 'tpope/vim-rails'
Plug 'tpope/vim-repeat'
Plug 'tpope/vim-sensible'
Plug 'tpope/vim-surround'
Plug 'tpope/vim-unimpaired'
Plug 'venantius/vim-cljfmt'
Plug 'vim-airline/vim-airline'
Plug 'vim-airline/vim-airline-themes'
Plug 'w0rp/ale'

" Initialize plugin system
call plug#end()

" Basic configuration
nnoremap <SPACE> <Nop>
let mapleader = "\<Space>" " leader is space

filetype indent on        " activates indenting for files
set autoindent            " auto indenting
set backspace=2           " backspace in insert mode works like normal editor
set expandtab             " Insert spaces when TAB is pressed
set formatoptions+=o      " Continue comment marker in new lines.
set hidden                " Required for operations modifying multiple buffers like rename
set nobackup              " get rid of anoying ~file
set ignorecase            " ignore case in / and ? searches
set nojoinspaces          " Prevents inserting two spaces after punctuation on a join (J)
set number                " Show the line numbers on the left side
set shiftwidth=2          " indent by 2 spaces when auto-indenting
set showmatch             " Show matching brackets
set softtabstop=2         " indent by 2 spaces when hitting tab
set tabstop=2             " Render TABs using this many spaces
syntax on                 " syntax highlighting

tnoremap <Esc> <C-\><C-n> " Escape enters normal mode in terminal
nnoremap Y y$             " `Y` behaves like `D` and `C`
set smartcase             " don't ignore case if there are capitals in search string
set clipboard=unnamedplus " use the system clipboard by default

" ----------------------------------------------------------
" Appearance
set background=dark
let g:seoul256_background = 236
colorscheme PaperColor
set laststatus=2
set colorcolumn=80

" ----------------------------------------------------------
" Buffers

nnoremap <silent> <Leader>bn :bnext<cr>
nnoremap <silent> <Leader><Tab> :bnext<cr>
nnoremap <silent> <Leader>bp :bprevious<cr>
nnoremap <silent> <Leader>bd :bd<cr>

" ----------------------------------------------------------
" Vim Airline
let g:airline_theme='papercolor'
if !exists('g:airline_symbols')
    let g:airline_symbols = {}
endif

let g:airline_powerline_fonts = 1

" ----------------------------------------------------------
" FZF

nnoremap <silent> <Leader><Leader> :Commands<cr>
nnoremap <silent> <Leader>fb :Buffers<cr>
nnoremap <silent> <Leader>fc :Commits<cr>
nnoremap <silent> <Leader>ff :FZF<cr>
nnoremap <silent> <Leader>fg :GitFiles<cr>
nnoremap <silent> <Leader>rg :Rg<cr>

" Open files in horizontal split
nnoremap <silent> <Leader>s :call fzf#run({
\   'down': '40%',
\   'sink': 'botright split' })<CR>

" Open files in vertical horizontal split
nnoremap <silent> <Leader>v :call fzf#run({
\   'right': winwidth('.') / 2,
\   'sink':  'vertical botright split' })<CR>

" ----------------------------------------------------------
" COC

set cmdheight=2 " Better display for messages
set updatetime=300 " Smaller updatetime for CursorHold & CursorHoldI
set shortmess+=c " don't give |ins-completion-menu| messages.
set signcolumn=yes " always show signcolumns

" Use tab for trigger completion with characters ahead and navigate.
" Use command ':verbose imap <tab>' to make sure tab is not mapped by other plugin.
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.
inoremap <silent><expr> <c-space> coc#refresh()

" Use <cr> to confirm completion, `<C-g>u` means break undo chain at current position.
" Coc only does snippet and additional edit on confirm.
inoremap <expr> <cr> pumvisible() ? "\<C-y>" : "\<C-g>u\<CR>"

" Use `[c` and `]c` to navigate diagnostics
nmap <silent> [c <Plug>(coc-diagnostic-prev)
nmap <silent> ]c <Plug>(coc-diagnostic-next)

" Remap keys for gotos
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>')
  else
    call CocAction('doHover')
  endif
endfunction

" Highlight symbol under cursor on CursorHold
autocmd CursorHold * silent call CocActionAsync('highlight')

" Remap for rename current word
nmap <leader>rn <Plug>(coc-rename)

" Remap for format selected region
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

" Remap for do codeAction of selected region, ex: `<leader>aap` for current paragraph
xmap <leader>a  <Plug>(coc-codeaction-selected)
nmap <leader>a  <Plug>(coc-codeaction-selected)

" Remap for do codeAction of current line
nmap <leader>ac  <Plug>(coc-codeaction)
" Fix autofix problem of current line
nmap <leader>qf  <Plug>(coc-fix-current)

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

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


" Add diagnostic info for https://github.com/itchyny/lightline.vim
let g:lightline = {
      \ 'colorscheme': 'wombat',
      \ 'active': {
      \   'left': [ [ 'mode', 'paste' ],
      \             [ 'cocstatus', 'readonly', 'filename', 'modified' ] ]
      \ },
      \ 'component_function': {
      \   'cocstatus': 'coc#status'
      \ },
      \ }



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

" ----------------------------------------------------------
" Ale
"
let g:ale_completion_enabled = 1
let g:ale_linters = { 'rust': ['rls'], 'ruby': ['rubocop'], 'handlebars': ['ember-template-lint'] }
let g:ale_fixers = { 'rust': ['rustfmt'], 'handlebars': ['prettier'], 'json': ['prettier'] }
let g:airline#extensions#ale#enabled = 1
let g:ale_rust_cargo_use_check = 1
let g:ale_fix_on_save = 1
let g:ale_enabled = 1
let g:ale_sign_error = '⨉'
let g:ale_sign_warning = '⚠'
let g:ale_statusline_format = ['⨉ %d', '⚠ %d', '']
let g:ale_lint_on_save = 1
let g:ale_lint_on_enter = 1

" ----------------------------------------------------------
" Filetype specific

autocmd FileType html setlocal shiftwidth=4 tabstop=4 softtabstop=4
autocmd FileType html.handlebars setlocal shiftwidth=4 tabstop=4 softtabstop=4