vimrc

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => Plugin Manager (vim-plug)
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""

set nocompatible
filetype off

" Auto-install vim-plug if missing
if empty(glob('~/.vim/autoload/plug.vim'))
  silent !curl -fLo ~/.vim/autoload/plug.vim --create-dirs
    \ https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
  autocmd VimEnter * PlugInstall --sync | source $MYVIMRC
endif

source ~/dotfiles/install/vim/plugins.vim

filetype plugin indent on
syntax on

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => General
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""

let mapleader=","

set autoread                         " detect when a file is changed externally
set path+=**                         " tab-completion for file-related tasks
set encoding=utf-8 nobomb
set t_Co=256
silent! colorscheme dracula

set colorcolumn=120
highlight ColorColumn ctermbg=0 guibg=lightgrey

" Local state directories
set backupdir=~/.vim/backups
set directory=~/.vim/swaps
set undodir=~/.vim/undo
set undofile                         " persistent undo
set nobackup
set nowritebackup
set noswapfile

" Status line / UI
set laststatus=2
set showmode
set showtabline=2
set ruler
set title
set shortmess=atI
set report=0
set visualbell
set ttyfast
set nolazyredraw
set mouse=a

" Splits
set splitbelow
set splitright
set winminheight=0

" Scrolling
set scrolloff=8
set sidescrolloff=8

" Buffers
set hidden
set history=1000
set autoindent
set smartindent
set backspace=indent,eol,start
set cursorline
set nowrap
set nostartofline
set nojoinspaces
set showmatch
set mat=2

" Tabs / indentation
set expandtab
set smarttab
set tabstop=4
set softtabstop=4
set shiftwidth=4
set shiftround

" Search
set hlsearch
set incsearch
set ignorecase
set smartcase
set gdefault
set magic
set wrapscan

" Diff
set diffopt=filler
set diffopt+=iwhite

" Folding
set foldenable
set foldmethod=syntax
set foldlevel=2
set foldnestmax=3
set foldcolumn=4
set foldminlines=0

" Formatting
set formatoptions=cronq2l1

" Wildmenu / completion
set wildmenu
set wildchar=<TAB>
set wildmode=list:longest
set wildignore+=*.jpg,*.jpeg,*.gif,*.png,*.psd,*.o,*.obj,*.min.js
set wildignore+=*/smarty/*,*/vendor/*,*/node_modules/*,*/.git/*,*/.hg/*,*/.svn/*
set wildignore+=*/.sass-cache/*,*/log/*,*/tmp/*,*/build/*,*/ckeditor/*,*_build/*
set wildignore+=*/coverage/*,*.pyc
set suffixes=.bak,~,.swp,.swo,.o,.d,.info,.aux,.log,.dvi,.pdf,.bin,.bbl,.blg
set suffixes+=.brf,.cb,.dmg,.exe,.ind,.idx,.ilg,.inx,.out,.toc,.pyc,.pyd,.dll
set ofu=syntaxcomplete#Complete

" Line numbers
set number
set relativenumber

" Lisp word lists
set lispwords+=defroutes
set lispwords+=defpartial,defpage
set lispwords+=defaction,deffilter,defview,defsection
set lispwords+=describe,it

" Whitespace visualization
set lcs=tab:›\ ,trail:·,eol:¬,nbsp:_
set fcs=fold:-

" Paste toggle
set pastetoggle=<F2>
set clipboard=unnamed

" GUI
if has('gui_running')
   set guifont=Monaco:h12
   set guioptions=egmrt
endif

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => Mappings
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""

" Faster escape from insert mode
inoremap jk <esc>

" Quicksave
nnoremap <C-Z> :update<CR>
vnoremap <C-Z> <C-C>:update<CR>
inoremap <C-Z> <C-O>:update<CR>

" Paste toggle (also F2)
map <leader>p :set invpaste paste?<CR>

" netrw split
nnoremap <leader>pv :Vex<CR>

" Quick quit
noremap <leader>e :quit<CR>
noremap <leader>E :qa!<CR>

" Sudo write
noremap <leader>W :w !sudo tee %<CR>
command! W w

" Tabs
map <leader>n <esc>:tabprevious<CR>
map <leader>m <esc>:tabnext<CR>
nnoremap <leader>nt :tabnew<CR>

" Faster split resizing
if bufwinnr(1)
  map + <C-W>+
  map - <C-W>-
endif

" Scroll viewport 3 lines at a time
nnoremap <C-e> 3<C-e>
nnoremap <C-y> 3<C-y>

" Helpers for 2-space tabs / spaces
nmap \t :set ts=2 sts=2 sw=2 noet<cr>
nmap \s :set ts=2 sts=2 sw=2 et<cr>

" Better mark jump (line + col)
nnoremap ' `

" Hard-to-type characters
imap >> →
imap << ←
imap ^^ ↑
imap VV ↓
imap aa λ

" Toggle list (show tabs / trailing spaces)
nnoremap <silent> <leader>c :set nolist!<CR>

" Clear last search
map <silent> <leader>qs <Esc>:noh<CR>

" Indent / unindent block
nnoremap <leader>i] >i{<CR>
nnoremap <leader>i[ <i{<CR>

" Yank to EOL
nnoremap Y y$

" Insert blank line below without entering insert
map <leader><Enter> o<ESC>

" Search and replace word under cursor
nnoremap <leader>* :%s/\<<C-r><C-w>\>//<Left>

" Join lines, keep cursor put
nnoremap J mjJ`j

" Toggle fold under cursor
nnoremap <silent> <space> :exe 'silent! normal! '.((foldclosed('.')>0)? 'zMzx' : 'zc')<CR>

" Fix PageUp / PageDown
map <PageUp> <C-U>
map <PageDown> <C-D>
imap <PageUp> <C-O><C-U>
imap <PageDown> <C-O><C-D>

" Edit / source vimrc
nnoremap <leader>v :e ~/.vimrc<CR>
nnoremap <leader>V :tabnew ~/.vimrc<CR>
nnoremap <leader><CR> :so ~/.vimrc<CR>

" tmux-sessionizer
nnoremap <silent> <C-f> :silent !tmux neww tmux-sessionizer<CR>

" Vim on iPad
if &term == "xterm-ipad"
  nnoremap <Tab> <Esc>
  vnoremap <Tab> <Esc>gV
  onoremap <Tab> <Esc>
  inoremap <Tab> <Esc>`^
  inoremap <Leader><Tab> <Tab>
endif

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => Functions
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""

" Move-to-window-or-create
function! WinMove(key)
    let t:curwin = winnr()
    exec "wincmd ".a:key
    if (t:curwin == winnr())
        if (match(a:key,'[jk]'))
            wincmd v
        else
            wincmd s
        endif
        exec "wincmd ".a:key
    endif
endfunction

" Swap lines up / down
function! s:swap_lines(n1, n2)
    let line1 = getline(a:n1)
    let line2 = getline(a:n2)
    call setline(a:n1, line2)
    call setline(a:n2, line1)
endfunction

function! s:swap_up()
    let n = line('.')
    if n == 1 | return | endif
    call s:swap_lines(n, n - 1)
    exec n - 1
endfunction

function! s:swap_down()
    let n = line('.')
    if n == line('$') | return | endif
    call s:swap_lines(n, n + 1)
    exec n + 1
endfunction

noremap <silent> <c-s-p> :call <SID>swap_down()<CR>
noremap <silent> <c-s-o> :call <SID>swap_up()<CR>

" Strip trailing whitespace
function! StripWhitespace()
    let save_cursor = getpos(".")
    let old_query = getreg('/')
    :%s/\s\+$//e
    call setpos('.', save_cursor)
    call setreg('/', old_query)
endfunction
noremap <leader>ss :call StripWhitespace()<CR>

" Toggle relative / absolute line numbers
function! NumberToggle()
   if(&relativenumber == 1)
       set norelativenumber
       set number
   else
       set relativenumber
   endif
endfunc
nnoremap <leader>l :call NumberToggle()<cr>

" Absolute in insert / on focus loss, relative everywhere else
augroup numbertoggle
  autocmd!
  autocmd FocusLost   * set norelativenumber
  autocmd FocusGained * set relativenumber
  autocmd InsertEnter * set norelativenumber
  autocmd InsertLeave * set relativenumber
augroup END

" Omni-completion popup nav with C-j / C-k
function! OmniPopup(action)
    if pumvisible()
        if a:action == 'j'
            return "\<C-N>"
        elseif a:action == 'k'
            return "\<C-P>"
        endif
    endif
    return a:action
endfunction
inoremap <silent><C-j> <C-R>=OmniPopup('j')<CR>
inoremap <silent><C-k> <C-R>=OmniPopup('k')<CR>

" Restore cursor position on file open
autocmd BufReadPost *
  \ if line("'\"") > 1 && line("'\"") <= line("$") |
  \   exe "normal! g`\"" |
  \ endif

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => Plugin Configuration
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""

" --- fzf.vim (replaces CtrlP) -------------------------------------------
nmap <silent> <leader>t :Files<CR>
nmap <silent> <leader>r :Buffers<CR>
nmap <silent> <leader>. :Tags<CR>
nmap <silent> <leader>/ :Rg<CR>
let g:fzf_layout = { 'down': '~30%' }

" --- ALE (replaces Syntastic) -------------------------------------------
let g:ale_linters = {
\   'javascript': ['standard', 'eslint'],
\   'python':     ['flake8', 'pyright'],
\   'go':         ['gopls', 'golangci-lint'],
\}
let g:ale_fixers = {
\   '*':          ['remove_trailing_lines', 'trim_whitespace'],
\   'javascript': ['prettier', 'eslint'],
\   'python':     ['black', 'isort'],
\}
let g:ale_lint_on_save = 1
let g:ale_lint_on_text_changed = 'never'
let g:ale_sign_error = '✗'
let g:ale_sign_warning = '⚠'
nnoremap <leader>af :ALEFix<CR>
nmap <silent> <C-n> <Plug>(ale_next_wrap)
nmap <silent> <C-m> <Plug>(ale_previous_wrap)

" --- NERDTree -----------------------------------------------------------
let NERDTreeShowHidden=1
let g:NERDTreeQuitOnOpen=0
nnoremap <F5> :NERDTreeToggle<CR>
nmap <silent> <leader>k :NERDTreeToggle<cr>
nmap <silent> <leader>y :NERDTreeFind<cr>

" --- Buffer navigation --------------------------------------------------
map <Leader>, <C-^>
map <Leader>] :bnext<CR>
map <Leader>[ :bprev<CR>
map <Leader>ls :buffers<CR>
map <leader>qq :cclose<CR>

" --- UltiSnips ----------------------------------------------------------
let g:UltiSnipsExpandTrigger="<c-l>"
let g:UltiSnipsJumpForwardTrigger="<c-b>"
let g:UltiSnipsJumpBackwardTrigger="<c-z>"

" --- Airline ------------------------------------------------------------
let g:airline_powerline_fonts = 1
let g:airline#extensions#tabline#enabled = 1
let g:airline#extensions#tabline#left_sep = ' '
let g:airline#extensions#tabline#left_alt_sep = '|'
let g:airline#extensions#ale#enabled = 1

" --- vim-go -------------------------------------------------------------
let g:go_fmt_command = "goimports"
let g:go_fmt_autosave = 0
let g:go_list_type = "quickfix"
autocmd FileType go nmap <leader>gb <Plug>(go-build)
autocmd FileType go nmap <leader>gr <Plug>(go-run)

" --- gitgutter ----------------------------------------------------------
set updatetime=250
let g:gitgutter_map_keys = 0

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => Filetype-specific
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""

au BufRead,BufNewFile *.json set ft=json syntax=javascript
au BufRead,BufNewFile *.jade set ft=jade syntax=jade
au BufRead,BufNewFile Rakefile,Capfile,Gemfile,.autotest,.irbrc,*.treetop,*.tt set ft=ruby syntax=ruby
au BufNewFile,BufRead *.nu,*.nujson,Nukefile setf nu
au BufNewFile,BufReadPost *.coffee setl foldmethod=indent nofoldenable
au BufRead,BufNewFile .zsh_rc,.functions,.commonrc set ft=zsh