.vimrc

" Share config between vim and neovim
" mkdir -p ~/.local/share/nvim/
" ln -s ~/.vim ~/.local/share/nvim/site
" mkdir -p ~/.config/nvim/
" ln -s ~/.vimrc .config/nvim/init.vim

" Compatibility with vim
set runtimepath^=~/.vim runtimepath+=~/.vim/after
let &packpath = &runtimepath

" No problem in not behaving like standard vi
set nocompatible
" Ensuring backspace behaviour to be predictable
set backspace=indent,eol,start
" Fix for directional keys if using mosh
" TODO: run only if inside a mosh session
" set t_ku=
" set t_kl=
" set t_kd=
" set t_kr=

"Allow correct mouse behaviour inside tmux
if !has('nvim')
  set ttymouse=xterm2
endif
set mouse=a

" General editing settings
set tabstop=2
set shiftwidth=2
set softtabstop=2
set ts=2
set expandtab
set colorcolumn=81
set textwidth=80
set formatoptions+=t
set cursorline
set laststatus=2

" Install vim-plug before calling it
source $HOME/.vim/config/plug.vim

" Plugin catalog
call plug#begin('~/.vim/plugged')

Plug 'tmux-plugins/vim-tmux-focus-events'
Plug 'roxma/vim-tmux-clipboard'
Plug 'tmux-plugins/vim-tmux'
Plug 'vim-airline/vim-airline'
Plug 'vim-airline/vim-airline-themes'
"Plug 'vim-python/python-syntax'
"Plug 'fatih/vim-go'
Plug 'tpope/vim-commentary'
Plug 'tpope/vim-fugitive'
Plug 'tpope/vim-speeddating'
Plug 'godlygeek/tabular'
Plug 'plasticboy/vim-markdown'
Plug 'rust-lang/rust.vim'
Plug 'sheerun/vim-polyglot'
Plug 'dracula/vim', {'as': 'dracula'}
Plug 'altercation/vim-colors-solarized'
Plug 'bfrg/vim-cpp-modern'
"Plug 'python-mode/python-mode', { 'for': 'python', 'branch': 'develop' }
Plug 'vim-ruby/vim-ruby'
Plug 'vim-syntastic/syntastic'
Plug 'majutsushi/tagbar'
Plug 'scrooloose/nerdtree'
Plug 'justinmk/vim-sneak'
Plug 'ryanoasis/vim-devicons'
Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': './install --all' }
Plug 'junegunn/fzf.vim'
Plug 'junegunn/rainbow_parentheses.vim'
Plug 'mhinz/vim-startify'
Plug 'Shirk/vim-gas'
Plug 'wincent/vim-clipper'
Plug 'chrisbra/csv.vim'
Plug 'neovim/nvim-lspconfig'
Plug 'neoclide/coc.nvim', {'branch': 'release'}
Plug 'rhysd/vim-clang-format', {'for' : ['c', 'cpp']}
Plug 'endel/vim-github-colorscheme'
Plug 'arcticicestudio/nord-vim'
Plug 'jceb/vim-orgmode'

call plug#end()

" Dracula config
" let g:dracula_colorterm = 0
" colorscheme dracula
colorscheme nord

" Solarized config
let g:solarized_termcolors=256

" Airline config
let g:airline_powerline_fonts = 1

let themepref=trim(system('gsettings get org.gnome.desktop.interface color-scheme'))
if themepref == "'prefer-light'" || themepref == "'default'"
  set background=light
  let g:airline_theme='papercolor'
  colorscheme github
else
  set background=dark
  "let g:airline_theme='dracula'
  "colorscheme dracula
  let g:airline_theme='nord'
  colorscheme nord
endif

let g:vim_markdown_folding_disabled = 1

let g:AWSVimValidate = 1

" Syntastic Config
set statusline+=%#warningmsg#
set statusline+=%{SyntasticStatuslineFlag()}
set statusline+=%*
let g:syntastic_always_populate_loc_list = 1
let g:syntastic_auto_loc_list = 1
let g:syntastic_check_on_open = 1
let g:syntastic_check_on_wq = 0
let g:syntastic_sh_shellcheck_args="--external-sources"
let g:loaded_syntastic_java_javac_checker = 1

" NERDTree configuration
let g:NERDTreeShowHidden = 1
let g:NERDTreeMinimalUI = 1
let g:NERDTreeIgnore = []
let g:NERDTreeStatusline = ''

" Rainbow parenthesis config
let g:rainbow#pairs = [['(', ')'], ['[', ']'], ['{', '}']]
autocmd FileType * RainbowParentheses

" Startify config
let g:startify_session_dir = '~/.vim/session'

" Clipper config
let g:ClipperAddress='~/.clipper.sock'
let g:ClipperPort=0

" clang format config
let g:clang_format#auto_format=1

" Also run pip install jedi
" and :CocInstall coc-cfn-lint coc-clangd coc-css coc-cssmodules
" coc-html coc-json coc-python coc-rls coc-rust-analyzer coc-sh coc-sql
" coc-tsserver coc-vimlsp coc-xml coc-yaml
" More extensions at https://github.com/neoclide/coc.nvim/wiki/Using-coc-extensions
source $HOME/.vim/config/coc.vim
let g:coc_disable_startup_warning = 1

" Some servers have issues with backup files, see #649.
set nobackup
set nowritebackup

" Having longer updatetime (default is 4000 ms = 4 s) leads to noticeable
" delays and poor user experience.
set updatetime=300

" Always show the signcolumn, otherwise it would shift the text each time
" diagnostics appear/become resolved.
set signcolumn=yes

" Configure rustfmt
" NOTE: this needs a working rustfmt binary available in the path
let g:rustfmt_autosave = 1
let g:rustfmt_emit_files = 1
let g:rustfmt_fail_silently = 0

" Use tab for trigger completion with characters ahead and navigate.
" NOTE: There's always complete item selected by default, you may want to enable
" no select by `"suggest.noselect": true` in your configuration file.
" 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>
      \ coc#pum#visible() ? coc#pum#next(1) :
      \ CheckBackspace() ? "\<Tab>" :
      \ coc#refresh()
inoremap <expr><S-TAB> coc#pum#visible() ? coc#pum#prev(1) : "\<C-h>"

" Make <CR> to accept selected completion item or notify coc.nvim to format
" <C-g>u breaks current undo, please make your own choice.
inoremap <silent><expr> <CR> coc#pum#visible() ? coc#pum#confirm()
                              \: "\<C-g>u\<CR>\<c-r>=coc#on_enter()\<CR>"

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

" Use <c-space> to trigger completion.
if has('nvim')
  inoremap <silent><expr> <c-space> coc#refresh()
else
  inoremap <silent><expr> <c-@> coc#refresh()
endif

" Use `[g` and `]g` to navigate diagnostics
" Use `:CocDiagnostics` to get all diagnostics of current buffer in location list.
nmap <silent> [g <Plug>(coc-diagnostic-prev)
nmap <silent> ]g <Plug>(coc-diagnostic-next)

" GoTo code navigation.
nmap <silent> gd <Plug>(coc-definition)
nmap <silent> gy <Plug>(coc-type-definition)
nmap <silent> gi <Plug>(coc-implementation)
nmap <silent> gr <Plug>(coc-references)

" Use K to show documentation in preview window.
nnoremap <silent> K :call ShowDocumentation()<CR>

function! ShowDocumentation()
  if CocAction('hasProvider', 'hover')
    call CocActionAsync('doHover')
  else
    call feedkeys('K', 'in')
  endif
endfunction

" Highlight the symbol and its references when holding the cursor.
autocmd CursorHold * silent call CocActionAsync('highlight')

" Symbol renaming.
nmap <leader>rn <Plug>(coc-rename)

" Formatting selected code.
xmap <leader>f  <Plug>(coc-format-selected)
nmap <leader>f  <Plug>(coc-format-selected)

augroup mygroup
  autocmd!
  " Setup formatexpr specified filetype(s).
  autocmd FileType typescript,json setl formatexpr=CocAction('formatSelected')
  " Update signature help on jump placeholder.
  autocmd User CocJumpPlaceholder call CocActionAsync('showSignatureHelp')
augroup end

" Applying codeAction to the selected region.
" Example: `<leader>aap` for current paragraph
xmap <leader>a  <Plug>(coc-codeaction-selected)
nmap <leader>a  <Plug>(coc-codeaction-selected)

" Remap keys for applying codeAction to the current buffer.
nmap <leader>ac  <Plug>(coc-codeaction)
" Apply AutoFix to problem on the current line.
nmap <leader>qf  <Plug>(coc-fix-current)

" Run the Code Lens action on the current line.
nmap <leader>cl  <Plug>(coc-codelens-action)

" Map function and class text objects
" NOTE: Requires 'textDocument.documentSymbol' support from the language server.
xmap if <Plug>(coc-funcobj-i)
omap if <Plug>(coc-funcobj-i)
xmap af <Plug>(coc-funcobj-a)
omap af <Plug>(coc-funcobj-a)
xmap ic <Plug>(coc-classobj-i)
omap ic <Plug>(coc-classobj-i)
xmap ac <Plug>(coc-classobj-a)
omap ac <Plug>(coc-classobj-a)

" Remap <C-f> and <C-b> for scroll float windows/popups.
if has('nvim-0.4.0') || has('patch-8.2.0750')
  nnoremap <silent><nowait><expr> <C-f> coc#float#has_scroll() ? coc#float#scroll(1) : "\<C-f>"
  nnoremap <silent><nowait><expr> <C-b> coc#float#has_scroll() ? coc#float#scroll(0) : "\<C-b>"
  inoremap <silent><nowait><expr> <C-f> coc#float#has_scroll() ? "\<c-r>=coc#float#scroll(1)\<cr>" : "\<Right>"
  inoremap <silent><nowait><expr> <C-b> coc#float#has_scroll() ? "\<c-r>=coc#float#scroll(0)\<cr>" : "\<Left>"
  vnoremap <silent><nowait><expr> <C-f> coc#float#has_scroll() ? coc#float#scroll(1) : "\<C-f>"
  vnoremap <silent><nowait><expr> <C-b> coc#float#has_scroll() ? coc#float#scroll(0) : "\<C-b>"
endif

" Use CTRL-S for selections ranges.
" Requires 'textDocument/selectionRange' support of language server.
nmap <silent> <C-s> <Plug>(coc-range-select)
xmap <silent> <C-s> <Plug>(coc-range-select)

" Add `:Format` command to format current buffer.
command! -nargs=0 Format :call CocActionAsync('format')

" Add `:Fold` command to fold current buffer.
command! -nargs=? Fold :call     CocAction('fold', <f-args>)

" Add `:OR` command for organize imports of the current buffer.
command! -nargs=0 OR   :call     CocActionAsync('runCommand', 'editor.action.organizeImport')

" Add (Neo)Vim's native statusline support.
" NOTE: Please see `:h coc-status` for integrations with external plugins that
" provide custom statusline: lightline.vim, vim-airline.
set statusline^=%{coc#status()}%{get(b:,'coc_current_function','')}

" Mappings for CoCList
" Show all diagnostics.
nnoremap <silent><nowait> <space>a  :<C-u>CocList diagnostics<cr>
" Manage extensions.
nnoremap <silent><nowait> <space>e  :<C-u>CocList extensions<cr>
" Show commands.
nnoremap <silent><nowait> <space>c  :<C-u>CocList commands<cr>
" Find symbol of current document.
nnoremap <silent><nowait> <space>o  :<C-u>CocList outline<cr>
" Search workspace symbols.
nnoremap <silent><nowait> <space>s  :<C-u>CocList -I symbols<cr>
" Do default action for next item.
nnoremap <silent><nowait> <space>j  :<C-u>CocNext<CR>
" Do default action for previous item.
nnoremap <silent><nowait> <space>k  :<C-u>CocPrev<CR>
" Resume latest coc list.
nnoremap <silent><nowait> <space>p  :<C-u>CocListResume<CR>

set number

" Key Mappings
nnoremap <silent> <C-T> :TagbarToggle<CR>
nnoremap <silent> <C-b> :NERDTreeToggle<CR>
" File Finder
nnoremap <C-p> :FZF<CR>
let g:fzf_action = {
  \ 'ctrl-t': 'tab split',
  \ 'ctrl-s': 'split',
  \ 'ctrl-v': 'vsplit'
  \}

if has('nvim')
  " open new split panes to right and below
  set splitright
  set splitbelow
  " turn terminal to normal mode with escape
  tnoremap <Esc> <C-\><C-n>
  " start terminal in insert mode
  au BufEnter * if &buftype == 'terminal' | :startinsert | endif
  " open terminal on ctrl+n
  function! OpenTerminal()
    split term://zsh
      resize 20
      endfunction
      nnoremap <c-n> :call OpenTerminal()<CR>

  " use alt+hjkl to move between split/vsplit panels
  tnoremap <A-h> <C-\><C-n><C-w>h
  tnoremap <A-j> <C-\><C-n><C-w>j
  tnoremap <A-k> <C-\><C-n><C-w>k
  tnoremap <A-l> <C-\><C-n><C-w>l
  nnoremap <A-h> <C-w>h
  nnoremap <A-j> <C-w>j
  nnoremap <A-k> <C-w>k
  nnoremap <A-l> <C-w>l
end

" Automaticaly close nvim if NERDTree is only thing left open
autocmd bufenter * if (winnr("$") == 1 && exists("b:NERDTree") && b:NERDTree.isTabTree()) | q | endif

" TODO: move this all to filetype plugins?
" https://superuser.com/questions/632657/how-to-setup-vim-to-edit-both-makefile-and-normal-code-files

" Syntax highlight fixes for assembly
augroup nasm
  au!
  autocmd BufNewFile,BufRead *.nasm set syntax=nasm
augroup END
augroup gas
  au!
  autocmd BufNewFile,BufRead *.S,*.as set syntax=gas
augroup END

" Autoformat files on save
autocmd BufWritePost *.tf silent !terraform fmt <afile>