autocomplete.vim

"  _   __
" | | / /
" | |/ / _   _  ___ ____
" |    \| | | |/ _ \_  /  Author: Kyoz
" | |\  \ |_| | (_) / /   Github: github.com/banminkyoz
" \_| \_/\__, |\___/___|  Email : banminkyoz@gmail.com
"         __/ |
"        |___/

" GENERAL {{{

set pumheight=10 "--------------------------------- limit autocomple candidates

set hidden "------------------------- if hidden is not set, TextEdit might fail.
set shortmess+=c "------------------- don't give |ins-completion-menu| messages.
set updatetime=300 "------------ smaller updatetime for CursorHold & CursorHoldI
set cmdheight=1 "----------------------------------- better display for messages
set signcolumn=yes "------------------------------------ always show signcolumns

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

" }}}

" HIGHLIGHT {{{


hi CocErrorSign  ctermfg=Red guifg=#ef8189
hi CocWarningSign  ctermfg=Brown guifg=#e8b586
hi CocInfoSign  ctermfg=Yellow guifg=#61afef
hi CocHintSign  ctermfg=Blue guifg=#56b6c2


" }}}

" EXTENSIONS {{{

" Install coc extensions
if match(&rtp, 'coc.nvim') >= 0
    let s:languages = [
        \ 'coc-html',
        \ 'coc-css',
        \ 'coc-tsserver',
        \ 'coc-docker',
        \ 'coc-gocode',
        \ 'coc-java',
        \ 'coc-json',
        \ 'coc-phpls',
        \ 'coc-python',
        \ 'coc-rls',
        \ 'coc-vimtex',
        \ 'coc-vimlsp',
        \ 'coc-svg',
        \ 'coc-sh',
        \ ]

    let s:frameworks = [
        \ 'coc-angular',
        \ 'coc-vetur',
        \ 'coc-vimlsp',
        \ ]

    let s:linters = [
        \ 'coc-tslint',
        \ 'coc-eslint',
        \ 'coc-stylelint',
        \ 'coc-diagnostic',
        \ ]

    let s:utils = [
        \ 'coc-syntax',
        \ 'coc-dictionary',
        \ 'coc-lists',
        \ 'coc-tag',
        \ 'coc-emoji',
        \ 'coc-github',
        \ 'coc-snippets',
        \ 'coc-calc',
        \ 'coc-emmet',
        \ 'coc-prettier',
        \ 'coc-yank'
        \ ]

    let s:extensions = s:languages + s:frameworks + s:linters + s:utils

    let g:coc_global_extensions = s:extensions

    if exists('g:did_coc_loaded')
        call coc#add_extension()
    end
endif

" }}}

" MAPPINGS {{{

" 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>"

" Remap keys for gotos
nmap <silent> gd <Plug>(coc-definition)
nmap <silent> gi <Plug>(coc-implementation)
nmap <silent> gr <Plug>(coc-rename)
nmap <silent> gR <Plug>(coc-references)
nmap <silent> ge <Plug>(coc-diagnostic-prev)
nmap <silent> gE <Plug>(coc-diagnostic-next)
xmap <silent> gf  <Plug>(coc-format-selected)
nmap <silent> gf  <Plug>(coc-format-selected)

" 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
" }}}

" EXTENSIONS SETTINGS {{{

" coc-yank
nnoremap <silent> <leader>y  :<C-u>CocList -A --normal yank<cr>

" coc-prettier
command! -nargs=0 Prettier :CocCommand prettier.formatFile

" }}}

" SNIPPETS SETTINGS {{{

let g:coc_snippet_next = '<c-j>'
let g:coc_snippet_prev = '<c-k>'
" imap <C-j> <Plug>(coc-snippets-expand-jump)

inoremap <silent><expr> <C-j>
      \ pumvisible() ? coc#_select_confirm() :
      \ coc#expandableOrJumpable() ? "\<C-r>=coc#rpc#request('doKeymap', ['snippets-expand-jump',''])\<CR>" :
      \ <SID>check_back_space() ? "\<TAB>" :
      \ coc#refresh()

" }}}