vimrc.vim

"        _
" __   _(_)_ __ ___  _ __ ___
" \ \ / / | '_ ` _ \| '__/ __|
"  \ V /| | | | | | | | | (__
"   \_/ |_|_| |_| |_|_|  \___|

" ============================
" Plugins (Using vim-plug https://github.com/junegunn/vim-plug)
" ============================
"
call plug#begin('~/.vim/pack/andimrob')

" Collection of color schemes https://github.com/rafi/awesome-vim-colorschemes
Plug 'rafi/awesome-vim-colorschemes'

" More text objects https://github.com/wellle/targets.vim
Plug 'wellle/targets.vim'

" Quick look at vim buffers/registers https://github.com/junegunn/vim-peekaboo
Plug 'junegunn/vim-peekaboo'

" Use fzf for fuzzy search https://github.com/junegunn/fzf.vim
Plug 'junegunn/fzf', { 'do': { -> fzf#install() } }
Plug 'junegunn/fzf.vim'

" Use nerdtree for a file explorer https://github.com/preservim/nerdtree
Plug 'preservim/nerdtree'

" Use Emmet https://github.com/mattn/emmet-vim
Plug 'mattn/emmet-vim'

" Vscode intellisense / code completion
Plug 'neoclide/coc.nvim', {'branch': 'release'}

" Surround commands
Plug 'tpope/vim-surround'

call plug#end()

" ============================
" Configs
" ============================

" Turn off vi compatibility
set nocompatible

" ============================
" Basic visual settings
" ============================

" Use the colorscheme
colorscheme OceanicNext

syntax on
syntax enable

set t_Co=256
set background=dark
set colorcolumn=140
set number
set tabstop=2
set shiftwidth=2
set smartindent
set autoindent
set expandtab
set relativenumber

" Open new split panes to right and bottom, which feels more natural than Vim’s default:
set splitbelow
set splitright

set hlsearch

" Handle ugly whitespace
set list listchars=tab:>-,trail:•,precedes:<,extends:>

" Show file options above the command line
set wildmenu

" ========
" Bars
" ========

" highlight clear SignColumn
" highlight VertSplit    ctermbg=236
highlight ColorColumn  ctermbg=237
highlight LineNr       ctermbg=236
" highlight StatusLineNC ctermbg=238 ctermfg=0
" highlight StatusLine   ctermbg=240 ctermfg=232
" highlight Visual       ctermbg=240 ctermfg=0
" highlight Pmenu        ctermbg=240 ctermfg=12
" highlight PmenuSel     ctermbg=3   ctermfg=1
" highlight SpellBad     ctermbg=0   ctermfg=1

" ============================
" Key Mappings
" ============================

" Disable navigation with arrow keys
noremap <Up> <NOP>
noremap <Down> <NOP>
noremap <Left> <NOP>
noremap <Right> <NOP>

" Use different key mappings for easy navigation between splits to save a keystroke.
" So instead of ctrl-w then j, it’s just ctrl-j:
nnoremap <C-J> <C-W><C-J>
nnoremap <C-K> <C-W><C-K>
nnoremap <C-L> <C-W><C-L>
nnoremap <C-H> <C-W><C-H>

" ============================
" Neovim configs
" ============================
if has('nvim')
  " Use escape key to exit terminal mode
  tnoremap <Esc> <C-\><C-n>

  " Use Alt-[ to as Esc key for terminal mode
  tnoremap <A-[> <Esc>

  " FZF in a pop-over window
  let g:fzf_layout = { 'window': { 'width': 0.9, 'height': 0.9 } }
  " Always enable preview window on the right with 60% width
  let g:fzf_preview_window = 'right:50%'

  command! -bang -nargs=? -complete=dir Files
    \ call fzf#vim#files(<q-args>, {'options': ['--layout=reverse', '--info=inline', '--preview', '~/.vim/pack/andimrob/fzf.vim/bin/preview.sh {}']}, <bang>0)
endif

" load indent file for the current filetype
" filetype indent on

" first, enable status line always
" set laststatus=2
" if version >= 700
"   au InsertEnter * hi StatusLine ctermfg=226 ctermbg=232
"   au InsertLeave * hi StatusLine ctermbg=240 ctermfg=232
" endif

" Make those debugger statements painfully obvious
" au BufEnter *.rb syn match error contained "\<binding.pry\>"
" au BufEnter *.rb syn match error contained "\<debugger\>"

" ridiculous macro for formatting Ruby hashes
" :nnoremap <leader>fh $v%lohc<CR><CR><Up><C-r>"<Esc>:s/,/,\r/g<CR>:'[,']norm ==<CR>

" ============================
" coc.nvim configs
" ============================

" 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.
set signcolumn=yes

" 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.
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.
if exists('*complete_info')
  inoremap <expr> <cr> complete_info()["selected"] != "-1" ? "\<C-y>" : "\<C-g>u\<CR>"
else
  imap <expr> <cr> pumvisible() ? "\<C-y>" : "\<C-g>u\<CR>"
endif

" Use `[g` and `]g` to navigate diagnostics
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>')
  else
    call CocAction('doHover')
  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 line.
nmap <leader>ac  <Plug>(coc-codeaction)
" Apply AutoFix to problem on the current line.
nmap <leader>qf  <Plug>(coc-fix-current)

" Introduce function text object
" NOTE: Requires 'textDocument.documentSymbol' support from the language server.
xmap if <Plug>(coc-funcobj-i)
xmap af <Plug>(coc-funcobj-a)
omap if <Plug>(coc-funcobj-i)
omap af <Plug>(coc-funcobj-a)

" Use <TAB> for selections ranges.
" NOTE: Requires 'textDocument/selectionRange' support from the language server.
" coc-tsserver, coc-python are the examples of servers that support it.
nmap <silent> <TAB> <Plug>(coc-range-select)
xmap <silent> <TAB> <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 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>