.vimrc

" Plugins
call plug#begin()
Plug '/usr/local/opt/fzf'
Plug 'junegunn/fzf.vim'
Plug 'https://github.com/rking/ag.vim'
Plug 'flazz/vim-colorschemes'
Plug 'scrooloose/nerdtree'
Plug 'scrooloose/nerdcommenter'
Plug 'Townk/vim-autoclose'
Plug 'itchyny/lightline.vim'
Plug 'ryanoasis/vim-devicons'
call plug#end()

let plugin_paths = ['plugins/fzf']

" Use Vim settings, rather than Vi settings (much better!).
" This must be first, because it changes other options as a side effect.
set nocompatible

" Encoding
set encoding=UTF-8


" allow backspacing over everything in insert mode
set backspace=indent,eol,start

if has("vms")
  set nobackup		" do not keep a backup file, use versions instead
else
  set backup		" keep a backup file (restore to previous version)
  set undofile		" keep an undo file (undo changes after closing)
endif
set history=50		" keep 50 lines of command line history
set ruler		" show the cursor position all the time
set showcmd		" display incomplete commands
set incsearch		" do incremental searching

" Don't use Ex mode, use Q for formatting
map Q gq

" CTRL-U in insert mode deletes a lot.  Use CTRL-G u to first break undo,
" so that you can undo CTRL-U after inserting a line break.
inoremap <C-U> <C-G>u<C-U>

" In many terminal emulators the mouse works just fine, thus enable it.
if has('mouse')
  set mouse=a
endif

" Switch syntax highlighting on, when the terminal has colors
" Also switch on highlighting the last used search pattern.
if &t_Co > 2 || has("gui_running")
  syntax on
  set hlsearch
endif

" Only do this part when compiled with support for autocommands.
if has("autocmd")

  " Enable file type detection.
  " Use the default filetype settings, so that mail gets 'tw' set to 72,
  " 'cindent' is on in C files, etc.
  " Also load indent files, to automatically do language-dependent indenting.
  filetype plugin indent on

  " Put these in an autocmd group, so that we can delete them easily.
  augroup vimrcEx
  au!

  " For all text files set 'textwidth' to 78 characters.
  autocmd FileType text setlocal textwidth=78

  " When editing a file, always jump to the last known cursor position.
  " Don't do it when the position is invalid or when inside an event handler
  " (happens when dropping a file on gvim).
  autocmd BufReadPost *
    \ if line("'\"") >= 1 && line("'\"") <= line("$") |
    \   exe "normal! g`\"" |
    \ endif

  augroup END

else

  set autoindent		" always set autoindenting on

endif " has("autocmd")

" Convenient command to see the difference between the current buffer and the
" file it was loaded from, thus the changes you made.
" Only define it when not defined already.
if !exists(":DiffOrig")
  command DiffOrig vert new | set bt=nofile | r ++edit # | 0d_ | diffthis
		  \ | wincmd p | diffthis
endif

if has('langmap') && exists('+langnoremap')
  " Prevent that the langmap option applies to characters that result from a
  " mapping.  If unset (default), this may break plugins (but it's backward
  " compatible).
  set langnoremap
endif

set number

" The Silver Searcher
if executable('ag')
  " Use ag over grep
  set grepprg=ag\ --nogroup\ --nocolor

  " Use ag in CtrlP for listing files. Lightning fast and respects .gitignore
  let g:ctrlp_user_command = 'ag %s -l --nocolor -g ""'

  " ag is fast enough that CtrlP doesn't need to cache
  let g:ctrlp_use_caching = 0
endif

" indentation for js, html and css
 au BufNewFile,BufRead *.js, *.html, *.css
    \ set tabstop=2
    \|set softtabstop=2
    \|set shiftwidth=2
 
" Pep 8 indentation
au BufNewFile,BufRead *.py
    \set tabstop=4
    \|set softtabstop=4
    \|set shiftwidth=4
    \|set textwidth=79
    \|set expandtab
    \|set autoindent
    \|set fileformat=unix

" Put all temp files `file.txt~` in the same directory
" set backupdir=~/vimtmp//,.
" set directory=~/vimtmp//,.
set noswapfile

" TextEdit might fail if hidden is not set.
set hidden

" Give more space for displaying messages.
set cmdheight=2

" Having longer updatetime (default is 4000 ms = 4 s) 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.
inoremap <silent><expr> <TAB>
    \ pumvisible() ? "\<C-n>" :
    \ <SID>check_back_space() ? "\<TAB>" :
    \ coc#refresh()
inoremap <expr><S-TAB> pumvisible() ? "\<C-p>" : "\<C-h>"

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

" turn hybrid line numbers on
:set number relativenumber
:set nu rnu

" CTRL + n Opens NERDTree
nnoremap <C-n> :NERDTreeToggle<CR>

" Shows hidden files in tree view
let NERDTreeShowHidden=1

" CTRL + p Searches for files, cmd+p in vscode
nnoremap <C-p> :Files<CR>

" \ for ctrl+shift+f in vscode
nnoremap \ :Ag<SPACE>

" bind K to grep word under cursor
nnoremap K :grep! "\b<C-R><C-W>\b"<CR>:cw<CR>

"split navigations
nnoremap <C-J> <C-W><C-J>
nnoremap <C-K> <C-W><C-K>
nnoremap <C-L> <C-W><C-L>
nnoremap <C-H> <C-W><C-H>

" Colorscheme 
:colorscheme mango

" Enable folding with the spacebar
nnoremap <space> za

" Grep word under cursor
nnoremap K :grep! "\b<C-R><C-W>\b"<CR>:cw<CR>

autocmd StdinReadPre * let s:std_in=1
autocmd VimEnter * if argc() == 0 && !exists("s:std_in") | NERDTree | endif
autocmd bufenter * if (winnr("$") == 1 && exists("b:NERDTree") && b:NERDTree.isTabTree()) | q | endif
set rtp+=/usr/local/opt/fzf