Configuration for Neovim

init.vim

" Plugged
call plug#begin("~/.config/nvim/plugged")
	Plug 'morhetz/gruvbox'
    Plug 'preservim/nerdtree'
    Plug 'tiagofumo/vim-nerdtree-syntax-highlight'
    Plug 'Xuyuanp/nerdtree-git-plugin' 
    Plug 'ryanoasis/vim-devicons'
    Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': './install --all' }
    Plug 'junegunn/fzf.vim'
    Plug 'itchyny/lightline.vim'
call plug#end()

" Config Section
set tabstop=4
set shiftwidth=4
set expandtab
set nu

set background=dark
colorscheme gruvbox

" NERDTree
let g:NERDTreeDirArrowExpandable = ''
let g:NERDTreeDirArrowCollapsible = ''
let g:NERDTreeShowHidden = 1 
let g:NERDTreeMinimalUI = 1 " hide helper
let g:NERDTreeIgnore = ['^node_modules$'] " ignore node_modules to increase load speed 
let g:NERDTreeStatusline = '' " set to empty to use lightline

" sync open file with NERDTree
" " Check if NERDTree is open or active
function! IsNERDTreeOpen()        
  return exists("t:NERDTreeBufName") && (bufwinnr(t:NERDTreeBufName) != -1)
endfunction

" " Toggle
noremap <silent> <C-k><C-b> :NERDTreeToggle<CR>
" " Close window if NERDTree is the last one
autocmd BufEnter * if (winnr("$") == 1 && exists("b:NERDTree") && b:NERDTree.isTabTree()) | q | endif
" " Map to open current file in NERDTree and set size
nnoremap <leader>pv :NERDTreeFind<bar> :vertical resize 45<CR>

" NERDTree Syntax Highlight
" " Enables folder icon highlighting using exact match
let g:NERDTreeHighlightFolders = 1 
" " Highlights the folder name
let g:NERDTreeHighlightFoldersFullName = 1 
" " Color customization
let s:brown = "905532"
let s:aqua =  "3AFFDB"
let s:blue = "689FB6"
let s:darkBlue = "44788E"
let s:purple = "834F79"
let s:lightPurple = "834F79"
let s:red = "AE403F"
let s:beige = "F5C06F"
let s:yellow = "F09F17"
let s:orange = "D4843E"
let s:darkOrange = "F16529"
let s:pink = "CB6F6F"
let s:salmon = "EE6E73"
let s:green = "8FAA54"
let s:lightGreen = "31B53E"
let s:white = "FFFFFF"
let s:rspec_red = 'FE405F'
let s:git_orange = 'F54D27'
" " This line is needed to avoid error
let g:NERDTreeExtensionHighlightColor = {} 
" " Sets the color of css files to blue
let g:NERDTreeExtensionHighlightColor['css'] = s:blue 
" " This line is needed to avoid error
let g:NERDTreeExactMatchHighlightColor = {} 
" " Sets the color for .gitignore files
let g:NERDTreeExactMatchHighlightColor['.gitignore'] = s:git_orange 
" " This line is needed to avoid error
let g:NERDTreePatternMatchHighlightColor = {} 
" " Sets the color for files ending with _spec.rb
let g:NERDTreePatternMatchHighlightColor['.*_spec\.rb$'] = s:rspec_red 
" " Sets the color for folders that did not match any rule
let g:WebDevIconsDefaultFolderSymbolColor = s:beige 
" " Sets the color for files that did not match any rule
let g:WebDevIconsDefaultFileSymbolColor = s:blue 

" NERDTree Git Plugin
let g:NERDTreeGitStatusIndicatorMapCustom = {
    \ "Modified"  : "✹",
    \ "Staged"    : "✚",
    \ "Untracked" : "✭",
    \ "Renamed"   : "➜",
    \ "Unmerged"  : "═",
    \ "Deleted"   : "✖",
    \ "Dirty"     : "✗",
    \ "Clean"     : "✔︎",
    \ 'Ignored'   : '☒',
    \ "Unknown"   : "?"
    \ }

nnoremap <C-p> :GFiles<CR>
let g:fzf_action = {
  \ 'ctrl-t': 'tab split',
  \ 'ctrl-s': 'split',
  \ 'ctrl-v': 'vsplit'
  \}

let $FZF_DEFAULT_COMMAND = 'ag -g ""'

" Lightline
let g:lightline = {
  \     'colorscheme': 'powerlineish',
  \     'active': {
  \         'left': [['mode', 'paste' ], ['readonly', 'filename', 'modified']],
  \         'right': [['lineinfo'], ['percent'], ['fileformat', 'fileencoding']]
  \     }
  \ }

"--------------------Kevin's Own Mappings 
inoremap <c-u> <esc>viwUi
nnoremap <c-u> viwU
nnoremap <space> viw