Neovim configuration

set scrolloff=8 
set number
set relativenumber
set tabstop=2 softtabstop=2
set shiftwidth=2
set expandtab
set smartindent

call plug#begin('~/.vim/plugged')

Plug 'nvim-lua/plenary.nvim'
Plug 'nvim-telescope/telescope.nvim'
Plug 'projekt0n/github-nvim-theme'
Plug 'MunifTanjim/nui.nvim'
Plug 'kdheepak/lazygit.nvim'
Plug 'crnvl96/lazydocker.nvim'
Plug 'preservim/nerdcommenter'
Plug 'neoclide/coc.nvim', {'branch': 'release'}
Plug 'nvim-lua/plenary.nvim'
Plug 'nvim-treesitter/nvim-treesitter', {'do': ':TSUpdate'}

call plug#end()

lua << EOF
require'nvim-treesitter.configs'.setup {
  highlight = {
    enable = true,
    additional_vim_regex_highlighting = false,
  },
  ensure_installed = {"javascript", "typescript"},
}
EOF

colorscheme github_dark_default

let g:coc_global_extensions = ['coc-eslint', 'coc-prettier', 'coc-json', 'coc-html', 'coc-css', 'coc-docker', 'coc-fzf-preview', 'coc-sql', 'coc-swagger', 'coc-tsserver']

" Having longer updatetime (default is 4000 ms = 4s) leads to noticeable
" delays and poor user experience
set updatetime=300

" 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: There's always complete item selected by default, you may want to enable
" no select by `"suggest.noselect": true` in your configuration file
" 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>
      \ coc#pum#visible() ? coc#pum#next(1) :
      \ CheckBackspace() ? "\<Tab>" :
      \ coc#refresh()
inoremap <expr><S-TAB> coc#pum#visible() ? coc#pum#prev(1) : "\<C-h>"

" Make <CR> to accept selected completion item or notify coc.nvim to format
" <C-g>u breaks current undo, please make your own choice
inoremap <silent><expr> <CR> coc#pum#visible() ? coc#pum#confirm()
                              \: "\<C-g>u\<CR>\<c-r>=coc#on_enter()\<CR>"

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

" Use `[g` and `]g` to navigate diagnostics
" Use `:CocDiagnostics` to get all diagnostics of current buffer in location list
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 ShowDocumentation()<CR>

function! ShowDocumentation()
  if CocAction('hasProvider', 'hover')
    call CocActionAsync('doHover')
  else
    call feedkeys('K', 'in')
  endif
endfunction

" Highlight the symbol and its references when holding the cursor
autocmd CursorHold * silent call CocActionAsync('highlight')

" Formatting selected code
xmap <leader>f  <Plug>(coc-format-selected)
nmap <leader>f  <Plug>(coc-format-selected)

" LazyDocker
autocmd VimEnter * lua require('lazydocker').setup()

nnoremap <C-p> :GFiles<CR>
nnoremap <C-j> :cnext<CR>
nnoremap <C-k> :cprev<CR>
let mapleader = " "
nnoremap <leader>e :Vex<CR><C-w>o
nnoremap <leader><CR> :so ~/.config/nvim/init.vim<CR>

" Telescope
nnoremap <leader>p <cmd>Telescope find_files<cr>
nnoremap <leader>ff <cmd>Telescope live_grep<cr>
nnoremap <leader>fb <cmd>Telescope buffers<cr>

" Git diff
nnoremap <leader>d :LazyGit<CR>

" Comments
nnoremap <leader>/ 0i//<ESC>

" Copy
vnoremap <leader>y "+y

"Move selection
vnoremap J :m '>+1<CR>gv=gv
vnoremap K :m '<-2<CR>gv=gv