.vimrc

set nocompatible			" Ditch strict vi compatibility

" install plugins
call plug#begin('~/.vim/plugged')
Plug 'airblade/vim-gitgutter'
Plug 'ap/vim-css-color'
Plug 'chaoren/vim-wordmotion'
Plug 'sheerun/vim-polyglot'
Plug 'sainnhe/gruvbox-material'
Plug 'neoclide/coc.nvim', {'branch': 'release'}
call plug#end()

" Clear existing autocommands
autocmd!
set backspace=indent,eol,start    " More powerful backspacing

set ai                      " always set autoindenting on
set autowrite               " Autosave before commands like :next and :make
set textwidth=0             " Don't wrap words by default
set showcmd                 " Show (partial) command in status line.
set encoding=utf-8          " This being the 21st century, I use Unicode
set fileencoding=utf-8

set showmatch               " Show matching brackets.
set ignorecase              " Case insensitive matching
set smartcase               " Case sensitive matching if caps in search string
set hlsearch                " Highlight search matches

set wildmenu                " Use BASH style completion
set wildmode=list:longest,full

set scrolloff=3             " leave more context around cursor
set number                  " Line numbering

"set complete=.,w,b,u,t,],s{*.pm}
set nobackup                " Don't keep a backup file
set history=5000            " Keep 5000 lines of command line history
set viminfo='20,\"50        " Read/write a .viminfo file, don't store more than
                            " 50 lines of registers
" Visual stuff
set showcmd                 " Show information about ranges in the ruler
set laststatus=2
"set ruler                   " Show the cursor position all the time
set title                   " Show title in title bar
"set cursorline              " Highlight the current line

" highlight some badness
set list listchars=tab:→\ ,trail:·

" figure out tab spacing depending on some things
set tabstop=4
set shiftwidth=4
set softtabstop=4
set expandtab

" highlight tabs
syntax match Tab /\t/
hi Tab ctermbg=blue

" use 2-space tabs in some places
au BufNewFile,BufReadPost *.coffee setl shiftwidth=2 expandtab tabstop=2 softtabstop=2
au BufNewFile,BufReadPost *.rb setl shiftwidth=2 expandtab tabstop=2 softtabstop=2
au BufNewFile,BufReadPost *.erb setl shiftwidth=2 expandtab tabstop=2 softtabstop=2
au BufNewFile,BufReadPost *.arb setl shiftwidth=2 expandtab tabstop=2 softtabstop=2
au BufNewFile,BufReadPost *.js,*.ts,*.tsx setl shiftwidth=2 expandtab tabstop=2 softtabstop=2
au BufNewFile,BufReadPost *.py setl shiftwidth=4 expandtab tabstop=4 softtabstop=4

set hidden				" keep buffer after tab closed

" keep backups and temp files in ~.vim/, not next to the actual files
set nobackup
set nowritebackup
set directory=~/.vim/tmp



set mouse=a					" Mouse support (needs MouseEvents and SIMBL hax to work in Terminal.app)
set ttymouse=sgr            " fix mouse support to work past 220th column (http://stackoverflow.com/questions/7000960/in-vim-why-doesnt-my-mouse-work-past-the-220th-column)

set shiftround              " make >> and << shift to nearest indentation-level column

" set default split opening position to be below and to the right of currently active split
set splitbelow
set splitright

set statusline=%f           " tail of the filename
set statusline+=%m          " modified flag
set statusline+=%=			" left/right separator
set statusline+=%c,			" cursor column
set statusline+=%l/%L		" cursor line/total lines

set nofoldenable			" everything unfolded by default

" COC recommnedations https://github.com/neoclide/coc.nvim#quick-start
set cmdheight=1
set updatetime=300
set shortmess+=c
set signcolumn=yes

" set up gruvbox
set termguicolors
set background=dark
let g:gruvbox_material_background = 'medium'  " available values: 'hard', 'medium'(default), 'soft'

" copy to system clipboard
set clipboard=unnamed

colorscheme gruvbox-material

" tweak the numberline to look ok in zenburn
highlight LineNr term=bold cterm=NONE ctermfg=DarkGrey ctermbg=NONE

" highlight trailing whitespace and non-tab indents
highlight ExtraWhitespace ctermbg=red guibg=red
match ExtraWhitespace /\s\+$/
match ExtraWhitespace /^\t*\zs \+/
autocmd BufWinEnter * match ExtraWhitespace /\s\+$/
autocmd InsertEnter * match ExtraWhitespace /\s\+\%#\@<!$/
autocmd InsertLeave * match ExtraWhitespace /\s\+$/
autocmd BufWinLeave * call clearmatches()

highlight Pmenu term=bold ctermfg=Cyan

syntax on                    " syntax highlighting on

" highlight jsx in .js files
let g:jsx_ext_required = 0

autocmd BufNewFile,BufRead *.ts set filetype=typescript
autocmd BufNewFile,BufRead *.tsx,*.jsx set filetype=typescript.tsx

" Keep comments indented
inoremap # #

" make requires real tabs
autocmd FileType make set noexpandtab shiftwidth=8

" Check for file changes periodically and on window & buffer switches
autocmd CursorHold * checktime
autocmd WinEnter * checktime
autocmd BufWinEnter * checktime

" Suffixes that get lower priority when doing tab completion for filenames.
" These are files we are not likely to want to edit or read.
set suffixes=.py,.bak,~,.swp,.o,.info,.aux,.log,.dvi,.bbl,.blg,.brf,.cb,.ind,.idx,.ilg,.inx,.out,.toc

"jump to last cursor position when opening a file
"dont do it when writing a commit log entry
"http://structurallysoundtreehouse.com/my-almost-perfect-vim-files
"http://github.com/fredlee/mydotfiles/tree/master
autocmd BufReadPost * call SetCursorPosition()
function! SetCursorPosition()
  if &filetype !~ 'commit\c' && &filetype !~ 'svn\c'
    if line("'\"") > 0 && line("'\"") <= line("$")
     exe "normal g`\""
    endif
  end
endfunction


" deal with commented json better
autocmd FileType json syntax match Comment +\/\/.\+$+

" COC

" 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

" Use <c-space> to trigger completion.
inoremap <silent><expr> <c-space> coc#refresh()

" Use `[g` and `]g` to navigate diagnostics
nmap <silent> [g <Plug>(coc-diagnostic-prev)
nmap <silent> ]g <Plug>(coc-diagnostic-next)

" GoTo code navigation.
nmap <silent> <M-h> :call CocActionAsync('doHover')<CR>
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 <SID>show_documentation()<CR>

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

command! -nargs=0 Prettier :CocCommand prettier.formatFile


" 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

" 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','')}

inoremap <expr> <cr> pumvisible() ? "\<C-y>" : "\<C-g>u\<CR>"
inoremap <silent><expr> <cr> pumvisible() ? coc#_select_confirm() : "\<C-g>u\<CR>"

autocmd! CompleteDone * if pumvisible() == 0 | pclose | endif

let g:coc_global_extensions = ['coc-eslint', 'coc-json', 'coc-tsserver', 'coc-solargraph']

" gitgutter - dots
let g:gitgutter_sign_added = '⋮'
let g:gitgutter_sign_modified = '⋮'
let g:gitgutter_sign_removed = '⋮'
let g:gitgutter_sign_modified_removed = '⋮'

" tags file - this looks in current directory, then recurses up until it finds
" a file named 'tags'.
set tags=./tags;/

" Suppress the no-ruby warning from Lusty Explorer
let g:LustyJugglerSuppressRubyWarning = 1

let mapleader = ","

" -------------
" various key combinations and tweaks
" -------------
" tweak up and down to do the right things for wrapped lines
inoremap <Down> <C-o>gj
inoremap <Up> <C-o>gk

" Toggle search highlighting
map <silent> <F1> :set invhlsearch<CR>

" Toggle line numbers
nmap <silent> <F5> :set invnumber<CR>
map <silent> <F5> :set invnumber<CR>

" backtick goes to the exact mark location, single-quote just the line; swap 'em
nnoremap ' `
nnoremap ` '

" have Y behave analogously to D and C rather than to dd and cc (which is
" already done by yy):
noremap Y y$

" tweak j/k to work with wrapped lines in a more logical fashion
nnoremap <silent> k gk
nnoremap <silent> j gj

" rotate vertical/horizontal splits
nnoremap <leader>x ^Wt^WH
nnoremap <leader>z ^Wt^WK

" center view around search result
map N Nzz
map n nzz

" Move around splits with ctrl key!
map <C-H> <C-W>h
map <C-J> <C-W>j
map <C-K> <C-W>k
map <C-L> <C-W>l

" ctags descend/return
nmap <F4> :pop<CR>

" open ctags in various ways
"nmap .e 
"nmap .v :vsp <CR>:exec("tag ".expand("<cword>"))<CR>
"nmap .s :sp <CR>:exec("tag ".expand("<cword>"))<CR>
"nmap .t :tabnew <CR>:exec("tag ".expand("<cword>"))<CR>

" open files from cur dir in various ways
map <leader>e :e <C-R>=expand("%:p:h") . "/" <CR>
map <leader>v :vsp <C-R>=expand("%:p:h") . "/" <CR>
map <leader>s :sp <C-R>=expand("%:p:h") . "/" <CR>
map <leader>t :tabnew <C-R>=expand("%:p:h") . "/" <CR>

" toggle git blame display
nmap <leader>b :GitBlame <CR>

" quick save hotkey
nmap <leader>w :w <CR>
nmap <leader>q :q <CR>

" horizontal split accordionator
map zk <C-W>k<C-W>_<CR>
map zj <C-W>j<C-W>_<CR>

" Switch tabs easily
nmap <Tab> gt
nmap <S-Tab> gT

" visually select everything between matching braces
noremap % v%