" ~/.config/nvim/init.vim

" This config is for neovim
" The plugin manager used is VimPlug

call plug#begin()

Plug 'scrooloose/nerdtree'
Plug 'tpope/vim-commentary'
Plug 'ctrlpvim/ctrlp.vim'
" Plug 'christoomey/vim-tmux-navigator'
Plug 'morhetz/gruvbox'

call plug#end()

" General
filetype plugin indent on " turns on detection, plugin, indent
syntax on       " enable syntax highlighting
set number              " line numbers
set nocp        " tuns off compatibility with old vi
set autoread    " watch for file changes
set showmode    " show INSERT, VISUAL, etc
set ruler           " cursor position
set wildmenu    " enhanced command line completion
set mouse-=a    " disabled VISUAL mode
set showmatch   " matching parens
set scrolloff=5 " keeps a margin of lines above/below line
set clipboard=unnamedplus " use system clipboard

" Theme
colorscheme gruvbox
set t_Co=256
" set background=dark
" set t_ut= " disable Background Color Erase

" Code folding
set foldmethod=manual

"Tabs and spacing
set autoindent      " copy indentation from prev line
set cindent
set tabstop=4
set expandtab
set shiftwidth=4
set smarttab

" Other
set noerrorbells
set visualbell
set mouse=n     " enables mouse

" Search
set hlsearch    " highlight search items
set incsearch   " incremental searching
set ignorecase  " case insensitive search
set smartcase
set diffopt+=iwhite

" ctrlp
let g:ctrlp_user_command = ['.git/', 'git --git-dir=%s/.git ls-files -oc --exclude-standard']

" NERDTree setup

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

function! CheckIfCurrentBufferIsFile()
  return strlen(expand('%')) > 0
endfunction

" Call NERDTreeFind iff NERDTree is active, current window contains a modifiable
" file, and we're not in vimdiff
function! SyncTree()
  if &modifiable && IsNERDTreeOpen() && CheckIfCurrentBufferIsFile() && !&diff
    NERDTreeFind
    wincmd p
  endif
endfunction

" Highlight currently open buffer in NERDTree
autocmd BufRead * call SyncTree()

function! ToggleTree()
  if CheckIfCurrentBufferIsFile()
    if IsNERDTreeOpen()
      NERDTreeClose
    else
      NERDTreeFind
    endif
  else
    NERDTree
  endif
endfunction

" NERDTree setup done

" WSL2 system clipboard support using win32yank.exe
" Enable if you want this and make sure win32yank.exe is installed
"let g:clipboard = {
"    \   'name': 'win32yank-wsl',
"    \   'copy': {
"    \      '+': 'win32yank.exe -i --crlf',
"    \      '*': 'win32yank.exe -i --crlf',
"    \    },
"    \   'paste': {
"    \      '+': 'win32yank.exe -o --lf',
"    \      '*': 'win32yank.exe -o --lf',
"    \   },
"    \   'cache_enabled': 0,
"    \ }


" remapped keys
inoremap {<CR>  {<CR>}<Esc>O
inoremap {{     {
inoremap {}     {}
nnoremap q <c-v>

" shortcuts
nmap <C-b> :call ToggleTree()<CR>

" close vim if only thing open is NERDTree
" autocmd bufenter * if (winnr("$") == 1 && exists("b:NERDTree") && b:NERDTree.isTabTree()) | q | endif