syntax on
set number
set cursorline
set expandtab tabstop=4 shiftwidth=4 softtabstop=4
set autoindent
set spelllang=vi,en

" Fold
set foldmethod=syntax
set foldlevel=1
set foldnestmax=1
set encoding=utf8

" Search
set hlsearch
nnoremap i :nohls<CR>i

" Plugin
call plug#begin()
Plug 'neoclide/coc.nvim', {'branch': 'release'}
Plug 'preservim/nerdtree'
Plug 'preservim/nerdcommenter'
Plug 'junegunn/fzf', { 'do': { -> fzf#install() } }
Plug 'junegunn/fzf.vim'
Plug 'vim-airline/vim-airline'
Plug 'vim-airline/vim-airline-themes'
Plug 'kevinhwang91/nvim-bqf' 
Plug 'morhetz/gruvbox'
Plug 'tpope/vim-fugitive'
Plug 'ynkdir/vim-diff'
call plug#end()

"Color scheme

colorscheme gruvbox
let g:gruvbox_contrast_light = 'hard'

set background=dark

" Comments
let mapleader = ","

"Open NERDTree
:nnoremap <silent> <expr> <F2> g:NERDTree.IsOpen() ? "\:NERDTreeClose<CR>" : bufexists(expand('%')) ? "\:NERDTreeFind<CR>" : "\:NERDTree<CR>"


"Coc.nvim
inoremap <silent><expr> <TAB>
      \ coc#pum#visible() ? coc#_select_confirm() :
      \ coc#expandableOrJumpable() ? "\<C-r>=coc#rpc#request('doKeymap', ['snippets-expand-jump',''])\<CR>" :
      \ CheckBackSpace() ? "\<TAB>" :
      \ coc#refresh()

inoremap <silent><expr> <CR> coc#pum#visible() ? coc#_select_confirm() : coc#refresh()

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

let g:coc_snippet_next = '<tab>'
" remap save
nnoremap <space> :w<CR>

" moving between windows
nnoremap <C-h> <C-W>h
nnoremap <C-j> <C-W>j
nnoremap <C-k> <C-W>k
nnoremap <C-l> <C-W>l
nnoremap <C-Left> <C-W>h
nnoremap <C-Down> <C-W>j
nnoremap <C-Up> <C-W>k
nnoremap <C-Right> <C-W>l
nnoremap <leader>to :tabonly<CR>
nnoremap <leader>o :only<CR>
nnoremap <leader><tab> :tabn<CR>
nnoremap <S-tab> :tabp<CR>

"set clipboard+=unnamedplus
" " Copy to clipboard
vnoremap  <leader>y  "+y
nnoremap  <leader>Y  "+yg_
nnoremap  <leader>y  "+y
nnoremap  <leader>yy  "+yy

" " Paste from clipboard
nnoremap <leader>p "+p
nnoremap <leader>P "+P


" FZF key mapping
nnoremap <silent> <Leader>b :Buffers<CR>
nnoremap <silent> <Leader>r :Rg<CR>
nnoremap <silent> <Leader>f :Files<CR>
nnoremap <silent> <Leader>g :GFiles<CR>
nnoremap <silent> <Leader>w :Rg <C-R><C-W><CR>

filetype plugin on
set splitright
set splitbelow