" TODO: Spell Checking

set nocompatible				" Disable vi compatibilty (Use vi improved only) - required for Vundle
set encoding=utf-8				" Use UTF-8
syntax enable					" Turn on syntax highlighting
set showmatch					" Show matching brackets
set ignorecase					" Do case insensitive matching
set incsearch					" Show partial matches for a search phrase
set number						" Show numbers
set relativenumber				" Show relative numbersi
set undolevels=999				" Lots of these
set hlsearch					" Highlight Search
set tabstop=4					" Tab size
set noexpandtab					" Do not expand tab into spaces (change to expandtab to use spaces)
set shiftwidth=4				" Indentation size
set softtabstop=4				" Tabs/Spaces interrop
set autoindent					" Enable autoindent
set ruler						" Show cursor position
set cursorline					" Highlight cursor line
set mouse=a						" Enable mouse mode
set backspace=indent,eol,start	" Delete everything
set laststatus=2				" Always show status line
set wildmode=longest,list,full	" Enable autocompletion
set splitbelow splitright		" Split in more natural way

"set nomodeline     " Disable as a security precaution
"set termguicolors	" Enable true colors (breaks TTY vim)
"set wildmenu       " Enable wildmenu
"set conceallevel=0 " Disable concealing
"set complete-=i    " Better completion
"set smarttab       " Better tabs
"set ttimeout       " Set timeout
"set ttimeoutlen=100
"set synmaxcol=500  " Syntax limit
"set scrolloff=3    " Scroll offset
"set sidescrolloff=5
"set autoread       " Reload files on change
"set tabpagemax=50  " More tabs
"set history=1000   " More history
"set viminfo^=!     " Better viminfo
"set formatoptions+=j " Delete comment character when joining commented lines

"set listchars=tab:,nbsp:_,trail:,extends:>,precedes:<
"set list           " Highlight non whitespace characters
"set nrformats-=octal " 007 != 010
"set sessionoptions-=options
"set viewoptions-=option
"set listchars=tab:\|\ " Set tab lines
"set listchars=tab:\|\- " Set tab lines with -

" XDG Support
if empty($MYVIMRC) | let $MYVIMRC = expand('<sfile>:p') | endif

if empty($XDG_CACHE_HOME)  | let $XDG_CACHE_HOME  = $HOME."/.cache"       | endif
if empty($XDG_CONFIG_HOME) | let $XDG_CONFIG_HOME = $HOME."/.config"      | endif
if empty($XDG_DATA_HOME)   | let $XDG_CONFIG_HOME = $HOME."/.local/share" | endif

set runtimepath^=$XDG_CONFIG_HOME/vim
set runtimepath+=$XDG_DATA_HOME/vim
set runtimepath+=$XDG_CONFIG_HOME/vim/after

set packpath^=$XDG_DATA_HOME/vim,$XDG_CONFIG_HOME/vim
set packpath+=$XDG_CONFIG_HOME/vim/after,$XDG_DATA_HOME/vim/after

let g:netrw_home = $XDG_DATA_HOME."/vim"
call mkdir($XDG_DATA_HOME."/vim/spell", 'p')
set viewdir=$XDG_DATA_HOME/vim/view | call mkdir(&viewdir, 'p')

set backupdir=$XDG_CACHE_HOME/vim/backup | call mkdir(&backupdir, 'p')
set directory=$XDG_CACHE_HOME/vim/swap   | call mkdir(&directory, 'p')
set undodir=$XDG_CACHE_HOME/vim/undo     | call mkdir(&undodir,   'p')

" Always use terminal background
autocmd ColorScheme * highlight! Normal ctermbg=NONE guibg=NONE

" Have Vim jump to the last position when reopening a file
if has("autocmd")
    au BufReadPost * if line("'\"") > 1 && line("'\"") <= line("$") | exe "normal! g'\""
endif

" Shortcutting split navigation, saving a keystroke
map <C-h> <C-w>h
map <C-j> <C-w>j
map <C-k> <C-w>k
map <C-l> <C-w>l

" Check file in shellcheck
map <leader>s :!clear && shellcheck %<CR>

" Copy selected text to system clipboard (requires gvim)
vnoremap <C-c> "*Y :let @+=@*<CR>
map <C-p> "+P

" Automatically deletes all trailing whitespace on save
autocmd BufWritePre * %s/\s\+$//e

" Vundle Init
set rtp+=~/.local/share/vim/bundle/Vundle.vim
call vundle#begin('~/.local/share/vim/bundle')

" Plugins
Plugin 'VundleVim/Vundle.vim'
Plugin 'airblade/vim-gitgutter' 		" Shows Git diff
Plugin 'joshdick/onedark.vim' 			" OneDark Theme
Plugin 'tpope/vim-fugitive' 			" Git Wrapper (also shows branch on statusline)
Plugin 'vim-airline/vim-airline' 		" AirLine statusline
Plugin 'vim-airline/vim-airline-themes' " AirLine statusline themes
Plugin 'scrooloose/nerdtree' 			" Adds File-tree
Plugin 'Xuyuanp/nerdtree-git-plugin'	" Shows git status in nerd-tree
Plugin 'vim-syntastic/syntastic'		" Syntax checking
Plugin 'PotatoesMaster/i3-vim-syntax'	" Add syntax for i3 config
Plugin 'jmcantrell/vim-virtualenv'		" Manage Virtual Enviroment
" Vundle End
call vundle#end()
filetype plugin indent on

" NERD Tree
autocmd StdinReadPre * let s:std_in=1
" Show tree when opening directory
autocmd VimEnter * if argc() == 1 && isdirectory(argv()[0]) && !exists("s:std_in") | exe 'NERDTree' argv()[0] | wincmd p | ene | exe 'cd '.argv()[0] | endif
" Use Ctrl+n to open tree
map <C-n> :NERDTreeToggle<CR>

" Syntastic
set statusline+=%#warningmsg#
set statusline+=%{SyntasticStatuslineFlag()}
set statusline+=%*

let g:syntastic_always_populate_loc_list = 1
let g:syntastic_auto_loc_list = 0
let g:syntastic_check_on_open = 1
let g:syntastic_check_on_wq = 0
let g:syntastic_python_checkers = ['flake8']

map <leader>c :SyntasticCheck<CR>
map <leader>z :Errors<CR>

" Airline
let g:airline_theme='onedark'
let g:airline#extensions#tabline#enabled = 1
let g:airline#extensions#tabline#formatter = 'unique_tail'
let g:airline_left_sep = "\uE0B0"
let g:airline_right_sep = "\uE0B2"

" One Dark
let g:onedark_color_overrides = {
\ "comment_grey": {"gui": "#69747C","cterm": "245", "cterm16": "8"},
\ "gutter_fg_grey": { "gui": "#69747C", "cterm": "245", "cterm16": "8"}
\}
if !exists('$TMUX')
    let g:onedark_terminal_italics = 1
endif
colorscheme onedark