" avoid 'X more file(s) to edit'
filetype on
set nocompatible
set confirm

" prevent the 'no write since last change' message when changing buffers
set hidden

" Reopen the last edited position in files
au BufReadPost * if line("'\"") > 1 && line("'\"") <= line("$") | exe "normal! g'\"" | endif

set history
" undo persists after quit
set undofile
set undodir=$HOME/.vim/undo

" italicize comments
highlight Comment cterm=italic gui=italic

set relativenumber
" four-space tabs
filetype indent plugin on
set smartindent

setlocal shiftwidth=2 softtabstop=2 expandtab
au FileType python setl softtabstop=4 shiftwidth=4 tabstop=4

let mapleader = "\<Space>"
 
" toggle comment
nnoremap <c-/> gc

" save all and quit
nnoremap <leader>q :wa<cr>ZQ

function! RunBlackIfInPythonFile()
  if &filetype ==# 'python'
    :call Black()
  endif
endfunction

" save
nnoremap <c-s> :call RunBlackIfInPythonFile()<cr>:w<cr>
" save and close buffer
nnoremap <leader>w :w<cr>:bw<cr>
nnoremap <c-h> :bp<cr>
nnoremap <c-l> :bn<cr>
" clear highlights
nnoremap <c-e> :noh<cr>
nnoremap <leader>p :PlugInstall<cr>

nnoremap <leader>b :call RunBlackIfInPythonFile()<cr>

" show number of lines in buffer
nnoremap <leader>l :echo line("$")<cr>

" quickly source vimrc with <space> + s
nnoremap <leader>s :source ~/.vimrc<cr>

" move selection
nnoremap <C-j> :m .+1<CR>==
nnoremap <C-k> :m .-2<CR>==
inoremap <C-j> <ESC>:m .+1<CR>==gi
inoremap <C-k> <ESC>:m .-2<CR>==gi
vnoremap <C-j> :m '>+1<CR>gv=gv
vnoremap <C-k> :m '<-2<CR>gv=gv

let g:python3_host_prog = $HOME . '/.local/venv/nvim/bin/python'
let g:black#settings = {
    \ 'fast': 1,
    \ 'line_length': 100
\}

call plug#begin('~/.vim/plugged')
  Plug 'folke/tokyonight.nvim', { 'branch': 'main' }
  Plug 'averms/black-nvim', {'do': ':UpdateRemotePlugins'}
  Plug 'tpope/vim-commentary'
call plug#end()

colorscheme tokyonight