" =============== 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 'luochen1990/rainbow'
Plug 'navarasu/onedark.nvim'
Plug 'neoclide/coc.nvim', {'branch': 'release'} " code completion

call plug#end()

" =============== Vannila vim config ================================================
let mapleader = "\\"
set splitbelow
set clipboard=unnamedplus
set number 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
nnoremap <silent> <leader>p :split +term <CR>


" =============== NERDTree ================================================
" Toggle file browser
nnoremap <silent> <leader>e :NERDTreeToggle<CR>

" =============== Colors ================================================
let g:onedark_config = {
	\ 'style': 'warmer',
\}
colorscheme onedark
hi CocFloating 		guibg=#151515	guifg=clear 	
hi Pmenu 				guibg=#151515 	guifg=clear
hi @parameter 							guifg=#ed6215
hi CursorColumn 		guibg=#e2c792 	guifg=#232326 
 
" =============== NERDTree Config ================================================
let NERDTreeShowHidden=1
"
" =============== Rainbow Config ================================================
let g:rainbow_active = 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> <leader>r <Plug>(coc-rename)
" 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