.vimrc

set noswapfile
syntax enable
filetype plugin indent on

" rust.vim
" git clone https://github.com/rust-lang/rust.vim ~/.vim/pack/plugins/start/rust.vim
let g:rustfmt_autosave = 1

" kotlin-vim
" git clone https://github.com/udalov/kotlin-vim.git ~/.vim/pack/plugins/start/kotlin-vim

" coc.nvim
" curl -sL install-node.now.sh/lts | bash <--- UNTRUSTED SOURCE??
" https://nodejs.org/en/download/ into ~/.local and symlink to ~/.local/bin
" https://github.com/neoclide/coc.nvim/wiki/Install-coc.nvim#using-vim8s-native-package-manager
" mkdir -p ~/.vim/pack/coc/start
" cd ~/.vim/pack/coc/start
" curl --fail -L https://github.com/neoclide/coc.nvim/archive/release.tar.gz|tar xzfv -
" :CocInstall coc-rust-analyzer
" :CocInstall coc-lists
" :CocConfig
" /w (without escaping)
"  {
"          \"coc.preferences.jumpCommand\": \"tab drop\"
"  }
" https://github.com/fwcd/kotlin-language-server/blob/master/EDITORS.md
" :helptags /home/medwards/.vim/pack/coc/start/coc.nvim-release/doc
" ===================
" Temporary
" ====================
" Keyboard shortcuts
" Go to next diagnostic (generally an error)
nmap <silent> <F8> <Plug>(coc-diagnostic-next)
" Go to previous diagnostic (generally an error)
nmap <silent> <S-F8> <Plug>(coc-diagnostic-prev)
" Go to definition of symbol under cursor
nmap <silent> <F12> <Plug>(coc-definition)
" Go to type definition of symbol under cursor
nmap <silent> <C-K> <Plug>(coc-type-definition)
" Go to references of symbol under cursor
nmap <silent> <S-F12> <Plug>(coc-references)
" Rename symbol under cursor and all references
nmap <silent> <F2>  <Plug>(coc-rename)
" Search all symbols
nmap <silent> <C-T> :CocList<SPACE>symbols<CR>
" Search all files
nmap <silent> <C-P> :CocList<SPACE>files<CR>
" Search all text
nmap <silent> <C-F> :CocList<SPACE>grep<CR>
" trigger autocomplete
if has('nvim')
  inoremap <silent><expr> <c-space> coc#refresh()
else
  inoremap <silent><expr> <c-@> coc#refresh()
endif
" Browse problems
nmap <silent> <F8> <Plug>(coc-diagnostic-next)
nmap <silent> <S-F8> <Plug>(coc-diagnostic-prev)
" trigger codeactions
nmap <silent> <C-L>  <Plug>(coc-codeaction-cursor)
xmap <silent> <C-L>  <Plug>(coc-codeaction-selected)
" Use K to show documentation in preview window.
nnoremap <silent> K :call <SID>show_documentation()<CR>
" Open docs in another window (VSCode "Open definition to the side")
nmap <silent> <C-K><F12> :CocCommand<SPACE>rust-analyzer.openDocs<CR>

function! s:show_documentation()
  if (index(['vim','help'], &filetype) >= 0)
    execute 'h '.expand('<cword>')
  else
    call CocAction('doHover')
  endif
endfunction

" Use tab for trigger completion with characters ahead and navigate.
" NOTE: Use command ':verbose imap <tab>' to make sure tab is not mapped by
" other plugin before putting this into your config.
inoremap <silent><expr> <TAB>
      \ pumvisible() ? "\<C-n>" :
      \ <SID>check_back_space() ? "\<TAB>" :
      \ coc#refresh()
inoremap <expr><S-TAB> pumvisible() ? "\<C-p>" : "\<C-h>"

function! s:check_back_space() abort
  let col = col('.') - 1
  return !col || getline('.')[col - 1]  =~# '\s'
endfunction

function! StatusDiagnostic() abort
  let info = get(b:, 'coc_diagnostic_info', {})
  if empty(info) | return '' | endif
  let msgs = []
  if get(info, 'error', 0)
    call add(msgs, 'E' . info['error'])
  endif
  if get(info, 'warning', 0)
    call add(msgs, 'W' . info['warning'])
  endif
  return ' - ' . join(msgs, ' ')
endfunction

function! StatusCoc() abort
  return get(g:, 'coc_status', '')
endfunction


set laststatus=2
autocmd User CocStatusChange redraws
"set statusline=%{coc#status()}
set statusline=%f
set statusline+=:
set statusline+=%l
set statusline+=%{StatusDiagnostic()}
set statusline+=%=
set statusline+=%{StatusCoc()}

" fugitive.vim - https://github.com/tpope/vim-fugitive
" mkdir -p ~/.vim/pack/tpope/start
" cd ~/.vim/pack/tpope/start
" git clone https://tpope.io/vim/fugitive.git
" vim -u NONE -c \"helptags fugitive/doc\" -c q  # /wo escaping
" git blame -- ALT+B (gq to quit)
nmap <silent> b :Git<SPACE>blame<CR>
" On blame: - reblame at commit (see g?)
" vim-rhubarb - https://github.com/tpope/vim-rhubarb
" mkdir -p ~/.vim/pack/tpope/start
" cd ~/.vim/pack/tpope/start
" git clone https://github.com/tpope/vim-rhubarb.git
" vim -u NONE -c \"helptags vim-rhubarb/doc\" -c q
" :GBrowse

" vim-toml - https://github.com/cespare/vim-toml
" git clone https://github.com/cespare/vim-toml ~/.vim/pack/plugins/start/vim-toml

" :Termdebug
packadd termdebug
let g:termdebug_wide = 1
au BufEnter *.c let termdebugger="gdb"
au BufEnter *.cpp let termdebugger="gdb"
au BufEnter *.rs let termdebugger="rust-gdb"
au BufEnter *.java let termdebugger="jdb"
au BufEnter *.kt let termdebugger="jdb"
" TODO: check termdebug state to determine if F5 is :Run or :Continue
nmap <silent> <F5> :Continue<CR>
nmap <silent> <F9> :Break<CR>
nmap <silent> <F10> :Over<CR>

" add line numbers TODO: only for code
set number
highlight CocFloating ctermbg=0
highlight Pmenu ctermbg=0 ctermfg=13
highlight PmenuSel ctermbg=0 ctermfg=NONE
set backspace=indent,eol,start
" tabs to spaces is pretty much universal now
set tabstop=8 softtabstop=0 expandtab shiftwidth=4 smarttab