" vim: set foldmethod=marker foldlevel=1 nomodeline:
" ================================================================================
" .init.vim / .vimrc of Marty Oehme {{{
" ================================================================================
"
" - stolen from many different sources including
" Steve Losh
" Junegunn Choi
" Tim Pope

" this config does not set nocompatible - neovim does this automatically
" this config does not set filetype plugin - vim-sensible does this
" }}}
" PLUGIN INSTALLATION - handled by VIM-PLUG {{{
" ================================================================================
"
" automatically install vim-plug if it does not exist
" Note: this installs it in the neovim folder, not the vim folder
if empty(glob('~/.local/share/nvim/site/autoload/plug.vim'))
  silent !curl -fLo ~/.local/share/nvim/site/autoload/plug.vim --create-dirs
    \ https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
  autocmd VimEnter * PlugInstall --sync | source academia_fzf.vim | q
endif

" automatically install any missing plugins
autocmd VimEnter *
  \  if len(filter(values(g:plugs), '!isdirectory(v:val.dir)'))
  \|   PlugInstall --sync | q
  \| endif
"
" set truecolor (neovim)
set termguicolors

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

" set cursor line highlighting, esp useful when using with bracket
" highlighting and you don't know which side of the brace the cursor is on
set cursorline

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

" highlight everything that goes over 80 columns
highlight ColorColumn ctermbg=magenta
call matchadd('ColorColumn', '\%81v', 100)

" set our leader key to space since with hjkl, space is largely useless
let mapleader = "\<Space>"
" maps the leader for buffer local mappings (e.g. vim-waikiki for files under
" the root dir to the same key -- might lead to incompatibilities, will have
" to test)
let maplocalleader = "\<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>

" quickly edit vimrc with leader+V
nnoremap <leader>V :vsp academia_fzf.vim<cr>
" automatically source the vimrc file whenever it is saved (causes slowdown
" when done in MANY successions)
" au BufWritePost init.vim so ~/.config/nvim/init.vim
" source vimrc with keystroke combination
nnoremap <leader>VV :source academia_fzf.vim<cr>


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

" stronger versions of left,right - move all the way
nnoremap H ^
nnoremap L $

" }}}
" CUSTOMIZATION {{{

" defines plugin directory
" Install plugins from vim with :PlugInstall
silent! if plug#begin('~/.local/share/nvim/plugged')
Plug 'christoomey/vim-tmux-navigator'
" automatically switch between relative and absolute numbers as buffers move
" into / out of focus (requires number & relativenumber to be set)
Plug 'jeffkreeftmeijer/vim-numbertoggle'
Plug 'rakr/vim-one'

Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': './install --bin' }

call plug#end()
endif

" FZF Fuzzy Finding
" set some fzf defaults
let g:fzf_layout = { 'up': '~40%' }
let g:fzf_colors =
\ { 'fg':      ['fg', 'Normal'],
  \ 'bg':      ['bg', 'Normal'],
  \ 'hl':      ['fg', 'Comment'],
  \ 'fg+':     ['fg', 'CursorLine', 'CursorColumn', 'Normal'],
  \ 'bg+':     ['bg', 'CursorLine', 'CursorColumn'],
  \ 'hl+':     ['fg', 'Statement'],
  \ 'info':    ['fg', 'PreProc'],
  \ 'border':  ['fg', 'Ignore'],
  \ 'prompt':  ['fg', 'Conditional'],
  \ 'pointer': ['fg', 'Exception'],
  \ 'marker':  ['fg', 'Keyword'],
  \ 'spinner': ['fg', 'Label'],
  \ 'header':  ['fg', 'Comment'] }
let g:fzf_action = {
  \ 'ctrl-t': 'tab split',
  \ 'ctrl-x': 'split',
  \ 'ctrl-v': 'vsplit' }

" set up fzf-bibtex
let g:fzf_bibtex_cache = '~/.cache/'
let g:fzf_bibtex_sources = 'academia.bib'

" prepare bibtex_ls function to look for bib files in cwd/parent/subdirs,
" attach the standard bibtex source file 
" return the command with standard cache directory filled
function! s:bibtex_ls(...)
  let bibfiles = (
      \ globpath('.', '*.bib', v:true, v:true) +
      \ globpath('..', '*.bib', v:true, v:true) +
      \ globpath('*/', '*.bib', v:true, v:true)
      \ )
  let bibfiles = join(bibfiles, ' ')
  let source_cmd = 'bibtex-ls -cache ' . g:fzf_bibtex_cache . ' ' .bibfiles . ' ' . g:fzf_bibtex_sources
  return source_cmd
endfunction

" insert citation from normal mode at cursor (with brackets)
function! s:bibtex_cite_sink(lines)
    let r=system("bibtex-cite ", a:lines)
    execute ':normal! i[' . r . ']'
endfunction
command! -bang -nargs=* CiteRef call fzf#run(fzf#wrap({
      \ 'source': <sid>bibtex_ls(<q-args>),
      \ 'sink*': function('<sid>bibtex_cite_sink'),
      \ 'up': '25%',
      \ 'options': '--ansi --multi --prompt "Cite> "'
      \ }))
" insert citation from insert mode at cursor (no brackets inserted)
function! s:bibtex_cite_sink_insert(lines)
    let r=system("bibtex-cite ", a:lines)
    execute ':normal! i' . r
    call feedkeys('a', 'n')
endfunction
" insert markdown formatted reference
function! s:bibtex_markdown_sink(lines)
  let r=system("bibtex-markdown -cache " . g:fzf_bibtex_cache . ' ' . g:fzf_bibtex_sources, a:lines)
  echo join(a:lines, '; ')
  execute ':normal! i' . r
endfunction
command! -bang -nargs=* CiteMarkdown call fzf#run(fzf#wrap({
      \ 'source': <sid>bibtex_ls(),
      \ 'sink*': function('<sid>bibtex_markdown_sink'),
      \ 'up': '25%',
      \ 'options': '--ansi --multi --prompt "Markdown> "'
      \ }))

" map @@ to automatically insert citation reference at cursor
inoremap <silent> @@ <c-g>u<c-o>:call fzf#run(fzf#wrap({
                        \ 'source': <sid>bibtex_ls(),
                        \ 'sink*': function('<sid>bibtex_cite_sink_insert'),
                        \ 'up': '25%',
                        \ 'options': '--ansi --multi --prompt "Cite> "'}))<CR>
" map <leader>cc to insert a complete citation at cursor
nnoremap <silent> <leader>cc :CiteRef<cr>
" map <leader>cm to insert markdown prettified citation
nnoremap <silent> <leader>cm :CiteMarkdown<cr>

" }}}

colo one