" =============== Plugins ================================================
call plug#begin('~/.config/nvim/plugged')

Plug 'https://github.com/vim-airline/vim-airline' " status bset mouse=aar on the bottom
Plug 'https://github.com/preservim/nerdtree' " file tree
Plug 'https://github.com/airblade/vim-gitgutter' " git diff
" Plug 'https://github.com/weilbith/nvim-code-action-menu' " fix my shit helper window :)
Plug 'neoclide/coc.nvim', {'branch': 'release'} " code completion

call plug#end()

" =============== Vannila vim config ================================================
:set clipboard=unnamedplus
:set relativenumber 
:windo set nowrap 
:set showcmd
:set mouse=a
" :set cursorline
:set foldmethod=syntax
:set updatetime=250
:set tabstop=4 shiftwidth=4 smarttab
:highlight Comment ctermfg=Grey
:set background=light
 
" =============== NERDTree Config ================================================
:let NERDTreeShowHidden=1

" =============== COC Config ================================================

inoremap <silent><expr> <TAB>
      \ coc#pum#visible() ? coc#pum#next(1) :
      \ CheckBackspace() ? "\<Tab>" :
      \ coc#refresh()
inoremap <expr><S-TAB> coc#pum#visible() ? coc#pum#prev(1) : "\<C-h>"

function! CheckBackspace() abort
  let col = col('.') - 1
  return !col || getline('.')[col - 1]  =~# '\s'
endfunction

" Highlight the variable on hold
autocmd CursorHold * silent call CocActionAsync('highlight')

" coc rename
nnoremap <silent> rr <Plug>(coc-rename)
" Toggle file browser
nnoremap <C-e> :NERDTreeToggle<CR>

" Jump between references and definiton 
nnoremap <silent> <C-k> :call CocActionAsync('jumpReferences')<CR>
nnoremap <silent> K :call CocActionAsync('jumpDefinition')<CR>
" show help menu
nnoremap <C-u> :call CocActionAsync('codeAction', 'cursor')<CR>


" Show Documentation
nnoremap <silent> J :call ShowDocumentation()<CR>
function! ShowDocumentation() " Show hover when provider exists, fallback to vim's builtin behavior.
	if CocAction('hasProvider', 'hover')
		call CocActionAsync('definitionHover')
    else
		call feedkeys('K', 'in')
	endif
endfunction