" Custom VIM Settings
" David F Glidden (2020)
" Vim 8.0+

" =============================================================================
" Runtime Stuff 
" =============================================================================

" True colors!
let $NVIM_TUI_ENABLE_TRUE_COLOR=1
" Make Vim more useful
set nocompatible
" Use the OS clipboard by default (on versions compiled with `+clipboard`)
set clipboard=unnamed
" Have lines wrap instead of continue off-screen
set linebreak
" Enhance command-line completion
set wildmenu
" Allow cursor keys in insert mode
set esckeys
" Allow backspace in insert mode
set backspace=indent,eol,start
" Optimize for fast terminal connections
set ttyfast
" Add the g flag to search/replace by default
set gdefault
" Use UTF-8 without BOM
set encoding=utf-8 nobomb
" Change mapleader to <,>
let mapleader=","
" Don’t add empty newlines at the end of files
set binary
set noeol
" Respect modeline in files
set modeline
set modelines=4
" Enable per-directory .vimrc files and disable unsafe commands in them
set exrc
set secure
" Enable line numbers
set number
" Enable syntax highlighting
syntax on
" Highlight current line
set cursorline
" Make tabs as wide as two spaces
set tabstop=2
" Show “invisible” characters
set lcs=tab:▸\ ,trail:·,eol:¬,nbsp:_
set list
" Highlight searches
set hlsearch
" Ignore case of searches
set ignorecase
" Highlight dynamically as pattern is typed
set incsearch
" Always show status line
set laststatus=2
" Enable mouse in all modes
set mouse=a
" Disable error bells
set noerrorbells
" Don’t reset cursor to start of line when moving around.
set nostartofline
" Show the cursor position
set ruler
" Don’t show the intro message when starting Vim
set shortmess=atI
" Show the current mode
set showmode
" Show the filename in the window titlebar
set title
" Show the (partial) command as it’s being typed
set showcmd
" Start scrolling three lines before the horizontal window border
set scrolloff=3

" Strip trailing whitespace (,ss)
function! StripWhitespace()
	let save_cursor = getpos(".")
	let old_query = getreg('/')
	:%s/\s\+$//e
	call setpos('.', save_cursor)
	call setreg('/', old_query)
endfunction
noremap <leader>ss :call StripWhitespace()<CR>
" Save a file as root (,W)
noremap <leader>W :w !sudo tee % > /dev/null<CR>

" =============================================================================
" Markdown Stuff
" =============================================================================

" Highlight the line the cursor is on
autocmd FileType markdown set cursorline
let g:vim_markdown_folding_disabled=1 " plasticboy’s plugin folds Markdown content by heading, and I don't like that feature by default
let g:vim_markdown_conceal_code_blocks = 0
let g:vim_markdown_math = 1
let g:vim_markdown_toml_frontmatter = 1
let g:vim_markdown_frontmatter = 1
let g:vim_markdown_strikethrough = 1
let g:vim_markdown_autowrite = 1
let g:vim_markdown_edit_url_in = 'tab'
let g:vim_markdown_follow_anchor = 1
let g:markdown_fenced_languages = ['html', 'python', 'bash=sh']

" Soft line wrap for Markdown using vim-pencil
let g:pencil#wrapModeDefault = 'soft'   " default is 'hard'
augroup pencil
  autocmd!
  autocmd FileType markdown,mkd call pencil#init()
  autocmd FileType text         call pencil#init({'wrap': 'hard'})
augroup END

" To start Goyo and set a CPL of 72
nmap <C-g> :Goyo 72<CR>

" =============================================================================
" Spell Check " =============================================================================

" Set spell check to Canadian English
autocmd FileType markdown setlocal spell spelllang=en_ca,fr

" =============================================================================
" Swapfiles & Backups
" =============================================================================

" Centralize backups, swapfiles and undo history
set backupdir=~/.vim/backups
set directory=~/.vim/swaps
if exists("&undodir")
	set undodir=~/.vim/undo
endif

" Don’t create backups when editing files in certain directories
set backupskip=/tmp/*,/private/tmp/*

" =============================================================================
" Filetypes
" =============================================================================

" Automatic commands
if has("autocmd")
	" Enable file type detection
	filetype on
	" Treat .json files as .js
	autocmd BufNewFile,BufRead *.json setfiletype json syntax=javascript
	" Treat .md files as Markdown
	autocmd BufNewFile,BufFilePre,BufRead *.txt set filetype=markdown
endif

" =============================================================================
" Bindings
" =============================================================================

map ; :Files<CR>
map <C-o> :NERDTreeToggle<CR>

" =============================================================================
" Vim-plug 
" =============================================================================

" 1. Install and run vim-plug on first run
if empty(glob('~/.vim/autoload/plug.vim'))
    silent !curl -fLo ~/.vim/autoload/plug.vim --create-dirs
    \ https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
    autocmd VimEnter * PlugInstall --sync | source $MYVIMRC
endif

"==============================================================================
"============== Plugin Specific Settings ======================================
"==============================================================================

call plug#begin()

Plug 'junegunn/goyo.vim'
Plug 'junegunn/limelight.vim'
Plug 'junegunn/fzf'
", { 'do': { -> fzf#install() } }
Plug 'plasticboy/vim-markdown'
Plug 'reedes/vim-pencil'
Plug 'itchyny/lightline.vim'
Plug 'tpope/vim-surround'
Plug 'tpope/vim-fugitive'
Plug 'preservim/nerdtree'
Plug 'arcticicestudio/nord-vim'

call plug#end()

" Use Nord colorscheme
colorscheme nord
highlight Comment cterm=italic