dotfiles/.config/nvim/init.vim

" defines plugin directory
" Install plugins from vim with :PlugInstall
call plug#begin('~/.local/share/nvim/plugged')

" Base
Plug 'tpope/vim-sensible'
Plug 'tpope/vim-commentary'
Plug 'christoomey/vim-tmux-navigator' " add seamless movement between vim and tmux

" Ecosystem
" Plug 'tpope/vim-fugitive' - Will have to take a closer look some other time
Plug 'scrooloose/nerdtree'

" Language Integration
Plug 'stephpy/vim-yaml'

" Design
Plug 'vim-airline/vim-airline'
Plug 'vim-airline/vim-airline-themes'
Plug 'edkolev/tmuxline.vim'

" Colorschemes
Plug 'Nequo/vim-allomancer'

call plug#end()

" PLUGIN CONFIGURATION
let g:airline_powerline_fonts=1
let g:airline_theme='raven'
colorscheme allomancer

" disable automatically refreshing the mux statusbar since it breaks tmux
" prefix highlighting. Instead, when changing vim statusbar just create
" snapshot with :TmuxlineSnapshot file and stick it into tmux config manually
let g:airline#extensions#tmuxline#enabled = 0
" custom preset with left-justified window list
let g:tmuxline_preset = {
  \'a'       : '#S',
  \'b'       : '#(whoami)',
  \'c'       : '#I:#P',
  \'win'     : '#I #W',
  \'cwin'    : [' ', '#I #W'],
  \'x'       : '#{prefix_highlight} %H:%M:%S',
  \'y'       : '%d-%b-%y',
  \'z'       : '#H',
  \'options' : {}}

" automatically save the current buffer when navigating away from vim
let g:tmux_navigator_save_on_switch = 1

" VIM SETTINGS
" set truecolor (neovim)
set termguicolors

" many of these come from
" http://stevelosh.com/blog/2010/09/coming-home-to-vim/

" sets tabs to be 4 characters, expanded into spaces, but still removable with
" one press of backspace.
" great explanation: http://vimcasts.org/transcripts/2/en/
set tabstop=4
set shiftwidth=4
set softtabstop=4
set expandtab

" shows linenumbers relative to the one you are on, for easy movement and
" dNUMBERd deletions
set relativenumber

" keeps an undofile next to files so that you can even undo if vim is closed
" in between
set undofile

" ignores case by default but will use case when search is specifically not
" all lowercased
set ignorecase
set smartcase

" whenever vim loses focus, save
au FocusLost * :wa

" disables showing us the current mode in the command line since airline takes
" care of it
set noshowmode

" KEYBINDINGS
"
" set our leader key to space since with hjkl, space is largely useless
let mapleader = "\<Space>"
" set jk to escape, in case capslock is not mapped to escape on the system
inoremap jk <ESC>

" remove search highlights by pressing space+/ - the key for searching the
" first place
nnoremap <leader>/ :noh<cr>

" move around between matching brackets with tab
nnoremap <tab> %
nnoremap <tab> %

" select the whole buffer with <leader>-a
map <leader>a ggVG

" quickly edit vimrc and source it on saving, useful for testing
map <leader>V :vsp ~/.config/nvim/init.vim<cr>
au BufWritePost init.vim so ~/.config/nvim/init.vim

" get rid of the help message popping up when I miss esc and hit F1
nnoremap <F1> <ESC>
inoremap <F1> <ESC>
vnoremap <F1> <ESC>

" remove all trailing whitespaces
nnoremap <leader>W :%s/\s\+$//<cr>:let @/=''<CR>

" 'open new tab' with leader-t (opens new buffer and switches to it)
" open actual new tab with leader-T
nnoremap <leader>t <C-w>v<C-w><C-w>:NERDTreeToggle<cr>
nnoremap <leader>T :tabedit .<cr>

" save current buffer with Ctrl-s
nnoremap <C-s> :w<cr>

" open NERDtree with leader-e
nnoremap <leader>e :NERDTreeToggle<CR>