"" Plugin stuff

" Vim-Plug
""""""""""""""""""""""""""""""""""""""""""""""""""
" Autoinstall Plug
if empty(glob('~/.local/share/nvim/site/autoload/plug.vim'))
	echo "Downloading junegunn/vim-plug"
	silent !curl -fLo '~/.local/share/nvim/site/autoload/plug.vim' --create-dir \
	'https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim'
	autocmd VimEnter * PlugInstall --sync | source $MYVIMRC
endif

" Plugins will be downloaded under the specified directory
call plug#begin('$HOME/.config/nvim/plugged')

""""""""""""""""""""""""""""""""""""""""""""""""""

" Custom status bar
Plug 'itchyny/lightline.vim'

" Language highlighting packages
Plug 'sheerun/vim-polyglot'

" Indentation guides
Plug 'nathanaelkane/vim-indent-guides'

" Colorscheme management
Plug 'lifepillar/vim-colortemplate'

" Neovim colorizer
Plug 'norcalli/nvim-colorizer.lua'

" All Plugins must be added before the following line
call plug#end()

" Brief help
" :PlugInstall		- installs plugins; append `!` to update or just :PluginUpdate
" :PlugUpdate		- updates plugins
" :PlugUpgrade		- upgrades vim-plug
" :PlugClean		- confirms removal of unused plugins; append `!` to auto-approve removal

" Lightline already shows the mode -> get rid of vim's default
set noshowmode

" Lightline customization

let g:lightline = {
			\ 'colorscheme': 'Tomorrow_Night_Eighties',
			\ 'active' : {
				\ 'left': [ [ 'mode', 'paste' ],
				\ 			[ 'gitbranch' ],
				\ 			[ 'filename', 'modified' ] ],
				\ 'right': [ [ 'readonly' ],
				\ 			[ 'column'],
				\ 			[ 'filetype' ] ],
			\ },
			\ 'subseparator': { 'left': '-'},
			\ 'component_function': {
				\ 'gitbranch': 'fugitive#head',
    			\ 'modified': 'LightlineModified',
    			\ 'filetype': 'LightlineFiletype'
				\ }
			\ }

function! LightlineModified()
  return &modifiable && &modified ? '[MO]' : ''
endfunction

function! LightlineFiletype()
  return winwidth(0) > 70 ? (&filetype !=# '' ? &filetype : 'no ft') : ''
endfunction

" Indent Guides
let g:indent_guides_enable_on_vim_startup=1

"" General
""""""""""""""""""""""""""""""""""""""""""""""""""
" Set how many lines VIM has to remember
set history=500

" Set vim update time (milliseconds)
set updatetime=250

" Detect filetypes plugins and indent rules
filetype plugin indent on

" To recognize groff filetype
au BufNewFile,BufRead *.mom set filetype=groff

" Defining the <leader>
let mapleader = " "

" Remove the pause when leaving insert mode
set ttimeoutlen=10

" Set utf8 as standard encoding
set encoding=utf-8

" No netrw history
let g:netrw_dirhistmax=0

"" User Interface
""""""""""""""""""""""""""""""""""""""""""""""""""
" Sets the font
set guifont=FuraCode\ Nerd\ Font\ Mono\ 12

" Shows the current position
set number

" Shows line numbers relative to the cursor
set relativenumber

" A buffer becomes hidden when abandonned
set hid

" Highlights search results
set hlsearch

" Searches before hitting ENTER
set incsearch

" Shows matching brackets when cursor is over them
set showmatch

" Shows the command that's being typed
set showcmd

" Splits to the right
set splitright

" Prevents nvim from being customized by text files commands
set nomodeline

" GUI colors
set termguicolors

" Colorscheme
colorscheme polyjuice

"" Text, tab and indent
""""""""""""""""""""""""""""""""""""""""""""""""""
" Do not use spaces instead of tabs
set noexpandtab

" But be smart with tabs
set smarttab

" 1 tab = 4 spaces
set tabstop=4
set shiftwidth=4 "for indent operations

" Indent and wrap rules
set autoindent
set wrap "wrap lines

" Stop auto-commenting new line
autocmd FileType * setlocal formatoptions-=c formatoptions-=r formatoptions-=o

" Change cursor behaviour when entering insert mode
let &t_SI.="\e[6 q" "SI = INSERT mode // steady bar
let &t_SR.="\e[4 q" "SR = REPLACE mode // underline

" Enable autocompletion
set wildmode=longest,full

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

"" Status line
"""""""""""""""""""""""""""""""""""""""""""""""""""
"Always show the status line
set laststatus=2

"" Macros
""""""""""""""""""""""""""""""""""""""""""""""""""
" Source files
noremap <leader>s :source ~/.config/nvim/init.vim <CR>

" Circle through buffers
noremap <leader>n :bn
noremap <leader>p :bp

" Clear the search highlight
noremap <leader>q :nohl<CR>

" Make use of xclipboard
nnoremap <leader>v "+p
vnoremap <leader>c "+y

" Compile document
noremap <leader><Enter> :w! \| !compiler %<CR>

" Compile mom folder into pdf
noremap <leader>m :w! \| !mommerge<CR>

" Plugin management
noremap <leader>pi :PlugInstall<CR>
noremap <leader>pc :PlugClean<CR>
noremap <leader>pu :PlugUpdate \| PlugUpgrade<CR>

" Fugitive
noremap <leader>gd :Gdiffsplit<CR>
noremap <leader>gb :Gblame<CR>

" Colorize
noremap <leader>cc :ColorizerToggle<CR>