" General {{{

" use indentation for folds
set foldmethod=indent
set foldnestmax=5
set foldlevelstart=99
set foldcolumn=0


" Sets how many lines of history VIM has to remember
set history=700

" Set to auto read when a file is changed from the outside
set autoread

" With a map leader it's possible to do extra key combinations
" like <leader>w saves the current file
let mapleader = ","
let g:mapleader = ","

" Leader key timeout
set tm=2000

" Allow the normal use of "," by pressing it twice
noremap ,, ,

" Use par for prettier line formatting
set formatprg="PARINIT='rTbgqR B=.,?_A_a Q=_s>|' par\ -w72"

" Use stylish haskell instead of par for haskell buffers
autocmd FileType haskell let &formatprg="stylish-haskell"

" Find custom built ghc-mod, codex etc
let $PATH = $PATH . ':' . expand("~/.haskell-vim-now/bin")

" Kill the damned Ex mode.
nnoremap Q <nop>

" }}}

" Vundle {{{

set nocompatible
filetype off
set rtp+=~/.vim/bundle/Vundle.vim
call vundle#rc()

" let Vundle manage Vundle
" required!
Bundle 'gmarik/vundle'

" Support bundles
Bundle 'jgdavey/tslime.vim'
Bundle 'Shougo/vimproc.vim'
Bundle 'ervandew/supertab'
Bundle 'scrooloose/syntastic'
Bundle 'moll/vim-bbye'
Bundle 'nathanaelkane/vim-indent-guides'
Bundle 'vim-scripts/gitignore'

" Git
Bundle 'tpope/vim-fugitive'
Bundle 'int3/vim-extradite'

" Bars, panels, and files
Bundle 'scrooloose/nerdtree'
Bundle 'bling/vim-airline'
Bundle 'kien/ctrlp.vim'
Bundle 'majutsushi/tagbar'

" Text manipulation
Bundle 'vim-scripts/Align'
Bundle 'vim-scripts/Gundo'
Bundle 'tpope/vim-commentary'
Bundle 'godlygeek/tabular'
Bundle 'michaeljsmith/vim-indent-object'

" Allow pane movement to jump out of vim into tmux
Bundle 'christoomey/vim-tmux-navigator'

" Haskell
Bundle 'raichoo/haskell-vim'
" Bundle 'enomsg/vim-haskellConcealPlus'
" Bundle 'eagletmt/ghcmod-vim'
Bundle 'eagletmt/neco-ghc'
Bundle 'Twinside/vim-hoogle'

" Other programming languages
Bundle 'digitaltoad/vim-jade'
Bundle 'zepto-lang/zepto-vim'
Bundle 'hellerve/carp-vim'
Bundle 'hellerve/luna-vim'
Bundle 'tikhomirov/vim-glsl'
Plugin 'rust-lang/rust.vim'
Plugin 'kchmck/vim-coffee-script'
Plugin 'isRuslan/vim-es6'

" Custom bundles
if filereadable(expand("~/.vim.local/bundles.vim"))
  source ~/.vim.local/bundles.vim
endif

" }}}

" VIM user interface {{{

" Set 7 lines to the cursor - when moving vertically using j/k
set so=7

" Turn on the WiLd menu
set wildmenu
" Tab-complete files up to longest unambiguous prefix
set wildmode=list:longest,full

" Always show current position
set ruler

" Show trailing whitespace
set list
" But only interesting whitespace
if &listchars ==# 'eol:$'
  set listchars=tab:>\ ,trail:-,extends:>,precedes:<,nbsp:+
endif

" Height of the command bar
set cmdheight=1

" Configure backspace so it acts as it should act
set backspace=eol,start,indent
set whichwrap+=<,>,h,l

" Ignore case when searching
set ignorecase

" When searching try to be smart about cases 
set smartcase

" Highlight search results
set hlsearch

" Makes search act like search in modern browsers
set incsearch

" Don't redraw while executing macros (good performance config)
set lazyredraw

" For regular expressions turn magic on
set magic

" Show matching brackets when text indicator is over them
set showmatch
" How many tenths of a second to blink when matching brackets
set mat=2

" No annoying sound on errors
set noerrorbells
set vb t_vb=

if &term =~ '256color'
  " disable Background Color Erase (BCE) so that color schemes
  " render properly when inside 256-color tmux and GNU screen.
  " see also http://snk.tuxfamily.org/log/vim-256color-bce.html
  set t_ut=
endif

" Force redraw
map <silent> <leader>r :redraw!<CR>

" Turn mouse mode on
nnoremap <leader>ma :set mouse=a<cr>

" Turn mouse mode off
nnoremap <leader>mo :set mouse=<cr>

" Default to mouse mode on
set mouse=a
" }}}

" Colors and Fonts {{{

Bundle 'vim-scripts/wombat256.vim'
try
  colorscheme desert
catch
endtry

" Enable syntax highlighting
syntax enable

" Adjust signscolumn and syntastic to match wombat
hi! link SignColumn LineNr
hi! link SyntasticErrorSign ErrorMsg
hi! link SyntasticWarningSign WarningMsg

" Use pleasant but very visible search hilighting
hi Search ctermfg=white ctermbg=173 cterm=none guifg=#ffffff guibg=#e5786d gui=none
hi! link Visual Search

" Enable filetype plugins
filetype plugin on
filetype indent on

" Match wombat colors in nerd tree
hi Directory guifg=#8ac6f2

" Searing red very visible cursor
hi Cursor guibg=red

" Use same color behind concealed unicode characters
hi clear Conceal

" Set paste mode and use system clipboard
set paste
set clipboard=unnamed

" Don't blink normal mode cursor
set guicursor=n-v-c:block-Cursor
set guicursor+=n-v-c:blinkon0

" Set extra options when running in GUI mode
if has("gui_running")
  set guioptions-=T
  set guioptions-=e
  set guitablabel=%M\ %t
endif
set t_Co=256

" Set utf8 as standard encoding and en_US as the standard language
set encoding=utf8

" Use Unix as the standard file type
set ffs=unix,dos,mac

" Use large font by default in MacVim
set gfn=Monaco:h19

" }}}

" Files, backups and undo {{{

" Turn backup off, since most stuff is in Git anyway...
set nobackup
set nowb
set noswapfile

" Source the vimrc file after saving it
augroup sourcing
  autocmd!
  autocmd bufwritepost .vimrc source $MYVIMRC
augroup END

" Map Ctrl-S to save
noremap <silent> <C-S> :update<CR>
vnoremap <silent> <C-S> <C-C>:update<CR>
inoremap <silent> <C-S> <C-O>:update<CR>

" Open file prompt with current path
nmap <leader>e :e <C-R>=expand("%:p:h") . '/'<CR>

" Show undo tree
nmap <silent> <leader>u :GundoToggle<CR>

" Fuzzy find files
nnoremap <silent> <Leader><space> :CtrlP<CR>
let g:ctrlp_max_files=0
let g:ctrlp_show_hidden=1
let g:ctrlp_custom_ignore = { 'dir': '\v[\/](.git)$' }

" }}}

" Text, tab and indent related {{{

" Use spaces instead of tabs
set expandtab

" Be smart when using tabs ;)
set smarttab

" 1 tab == 2 spaces
set shiftwidth=2
set tabstop=2

" Linebreak on 500 characters
set lbr
set tw=500

set ai "Auto indent
set si "Smart indent
set wrap "Wrap lines

" Pretty unicode haskell symbols
let g:haskell_conceal_wide = 1
let g:haskell_conceal_enumerations = 1

" }}}

" Visual mode related {{{

" Visual mode pressing * or # searches for the current selection
" Super useful! From an idea by Michael Naumann
vnoremap <silent> * :call VisualSelection('f', '')<CR>
vnoremap <silent> # :call VisualSelection('b', '')<CR>

" }}}

" Moving around, tabs, windows and buffers {{{

" Treat long lines as break lines (useful when moving around in them)
nnoremap j gj
nnoremap k gk

noremap <c-h> <c-w>h
noremap <c-k> <c-w>k
noremap <c-j> <c-w>j
noremap <c-l> <c-w>l

" Disable highlight when <leader><cr> is pressed
" but preserve cursor coloring
nmap <silent> <leader><cr> :noh\|hi Cursor guibg=red<cr>
augroup haskell
  autocmd!
  autocmd FileType haskell map <silent> <leader><cr> :noh<cr>:GhcModTypeClear<cr>:SyntasticReset<cr>
  autocmd FileType haskell setlocal omnifunc=necoghc#omnifunc
augroup END

" Return to last edit position when opening files (You want this!)
augroup last_edit
  autocmd!
  autocmd BufReadPost *
       \ if line("'\"") > 0 && line("'\"") <= line("$") |
       \   exe "normal! g`\"" |
       \ endif
augroup END
" Remember info about open buffers on close
set viminfo^=%

" Open window splits in various places
nmap <leader>sh :leftabove  vnew<CR>
nmap <leader>sl :rightbelow vnew<CR>
nmap <leader>sk :leftabove  new<CR>
nmap <leader>sj :rightbelow new<CR>

" Manually create key mappings (to avoid rebinding C-\)
let g:tmux_navigator_no_mappings = 1

nnoremap <silent> <C-h> :TmuxNavigateLeft<cr>
nnoremap <silent> <C-j> :TmuxNavigateDown<cr>
nnoremap <silent> <C-k> :TmuxNavigateUp<cr>
nnoremap <silent> <C-l> :TmuxNavigateRight<cr>

" don't close buffers when you aren't displaying them
set hidden

" previous buffer, next buffer
nnoremap <leader>bp :bp<cr>
nnoremap <leader>bn :bn<cr>

" delete buffer without closing pane
noremap <leader>bd :Bd<cr>

" fuzzy find buffers
noremap <leader>b<space> :CtrlPBuffer<cr>

" }}}

" Status line {{{

" Always show the status line
set laststatus=2

" }}}

" Editing mappings {{{

" Delete trailing white space on save
func! DeleteTrailingWS()
  exe "normal mz"
  %s/\s\+$//ge
  exe "normal `z"
endfunc

augroup whitespace
  autocmd!
  autocmd BufWrite *.hs :call DeleteTrailingWS()
augroup END

" }}}

" Spell checking {{{

" Pressing ,ss will toggle and untoggle spell checking
map <leader>ss :setlocal spell!<cr>

" }}}

" Helper functions {{{

function! CmdLine(str)
  exe "menu Foo.Bar :" . a:str
  emenu Foo.Bar
  unmenu Foo
endfunction 

function! VisualSelection(direction, extra_filter) range
  let l:saved_reg = @"
  execute "normal! vgvy"

  let l:pattern = escape(@", '\\/.*$^~[]')
  let l:pattern = substitute(l:pattern, "\n$", "", "")

  if a:direction == 'b'
    execute "normal ?" . l:pattern . "^M"
  elseif a:direction == 'gv'
    call CmdLine("vimgrep " . '/'. l:pattern . '/' . ' **/*.' . a:extra_filter)
  elseif a:direction == 'replace'
    call CmdLine("%s" . '/'. l:pattern . '/')
  elseif a:direction == 'f'
    execute "normal /" . l:pattern . "^M"
  endif

  let @/ = l:pattern
  let @" = l:saved_reg
endfunction

" }}}

" Slime {{{

vmap <silent> <Leader>rs <Plug>SendSelectionToTmux
nmap <silent> <Leader>rs <Plug>NormalModeSendToTmux
nmap <silent> <Leader>rv <Plug>SetTmuxVars

" }}}

" NERDTree {{{

" Close nerdtree after a file is selected
let NERDTreeQuitOnOpen = 1

function! IsNERDTreeOpen()
  return exists("t:NERDTreeBufName") && (bufwinnr(t:NERDTreeBufName) != -1)
endfunction

function! ToggleFindNerd()
  if IsNERDTreeOpen()
    exec ':NERDTreeToggle'
  else
    exec ':NERDTreeFind'
  endif
endfunction

" If nerd tree is closed, find current file, if open, close it
nmap <silent> <leader>f <ESC>:call ToggleFindNerd()<CR>
nmap <silent> <leader>F <ESC>:NERDTreeToggle<CR>

" }}}

" Alignment {{{

" Stop Align plugin from forcing its mappings on us
let g:loaded_AlignMapsPlugin=1
" Align on equal signs
map <Leader>a= :Align =<CR>
" Align on commas
map <Leader>a, :Align ,<CR>
" Align on pipes
map <Leader>a<bar> :Align <bar><CR>
" Prompt for align character
map <leader>ap :Align

" Enable some tabular presets for Haskell
let g:haskell_tabular = 1

" }}}

" Tags {{{

set tags=tags;/,codex.tags;/

let g:tagbar_type_haskell = {
    \ 'ctagsbin'  : 'hasktags',
    \ 'ctagsargs' : '-x -c -o-',
    \ 'kinds'     : [
        \  'm:modules:0:1',
        \  'd:data: 0:1',
        \  'd_gadt: data gadt:0:1',
        \  't:type names:0:1',
        \  'nt:new types:0:1',
        \  'c:classes:0:1',
        \  'cons:constructors:1:1',
        \  'c_gadt:constructor gadt:1:1',
        \  'c_a:constructor accessors:1:1',
        \  'ft:function types:1:1',
        \  'fi:function implementations:0:1',
        \  'o:others:0:1'
    \ ],
    \ 'sro'        : '.',
    \ 'kind2scope' : {
        \ 'm' : 'module',
        \ 'c' : 'class',
        \ 'd' : 'data',
        \ 't' : 'type'
    \ },
    \ 'scope2kind' : {
        \ 'module' : 'm',
        \ 'class'  : 'c',
        \ 'data'   : 'd',
        \ 'type'   : 't'
    \ }
\ }

" Generate haskell tags with codex and hscope
map <leader>tg :!codex update --force<CR>:call system("git hscope -X TemplateHaskell")<CR><CR>:call LoadHscope()<CR>

map <leader>tt :TagbarToggle<CR>

set csprg=~/.haskell-vim-now/bin/hscope
set csto=1 " search codex tags first
set cst
set csverb
nnoremap <silent> <C-\> :cs find c <C-R>=expand("<cword>")<CR><CR>
" Automatically make cscope connections
function! LoadHscope()
  let db = findfile("hscope.out", ".;")
  if (!empty(db))
    let path = strpart(db, 0, match(db, "/hscope.out$"))
    set nocscopeverbose " suppress 'duplicate connection' error
    exe "cs add " . db . " " . path
    set cscopeverbose
  endif
endfunction
au BufEnter /*.hs call LoadHscope()

" }}}

" Git {{{

let g:extradite_width = 60
" Hide messy Ggrep output and copen automatically
function! NonintrusiveGitGrep(term)
  execute "copen"
  " Map 't' to open selected item in new tab
  execute "nnoremap <silent> <buffer> t <C-W><CR><C-W>T"
  execute "silent! Ggrep " . a:term
  execute "redraw!"
endfunction

command! -nargs=1 GGrep call NonintrusiveGitGrep(<q-args>)
nmap <leader>gs :Gstatus<CR>
nmap <leader>gg :copen<CR>:GGrep 
nmap <leader>gl :Extradite!<CR>
nmap <leader>gd :Gdiff<CR>
nmap <leader>gb :Gblame<CR>

function! CommittedFiles()
  " Clear quickfix list
  let qf_list = []
  " Find files committed in HEAD
  let git_output = system("git diff-tree --no-commit-id --name-only -r HEAD\n")
  for committed_file in split(git_output, "\n")
    let qf_item = {'filename': committed_file}
    call add(qf_list, qf_item)
  endfor
  " Fill quickfix list with them
  call setqflist(qf_list, '')
endfunction

" Show list of last-committed files
nnoremap <silent> <leader>g? :call CommittedFiles()<CR>:copen<CR>

" }}}

" Haskell Interrogation {{{

set completeopt+=longest

" Use buffer words as default tab completion
let g:SuperTabDefaultCompletionType = '<c-x><c-p>'

" But provide (neco-ghc) omnicompletion
if has("gui_running")
  imap <c-space> <c-r>=SuperTabAlternateCompletion("\<lt>c-x>\<lt>c-o>")<cr>
else " no gui
  if has("unix")
    inoremap <Nul> <c-r>=SuperTabAlternateCompletion("\<lt>c-x>\<lt>c-o>")<cr>
  endif
endif

" Show types in completion suggestions
let g:necoghc_enable_detailed_browse = 1

" Type of expression under cursor
nmap <silent> <leader>ht :GhcModType<CR>
" Insert type of expression under cursor
nmap <silent> <leader>hT :GhcModTypeInsert<CR>
" GHC errors and warnings
nmap <silent> <leader>hc :SyntasticCheck ghc_mod<CR>
" Haskell Lint
let g:syntastic_mode_map = { 'mode': 'active', 'passive_filetypes': ['haskell'] }
nmap <silent> <leader>hl :SyntasticCheck hlint<CR>

" Hoogle the word under the cursor
nnoremap <silent> <leader>hh :Hoogle<CR>

" Hoogle and prompt for input
nnoremap <leader>hH :Hoogle 

" Hoogle for detailed documentation (e.g. "Functor")
nnoremap <silent> <leader>hi :HoogleInfo<CR>

" Hoogle for detailed documentation and prompt for input
nnoremap <leader>hI :HoogleInfo 

" Hoogle, close the Hoogle window
nnoremap <silent> <leader>hz :HoogleClose<CR>

" }}}

" Conversion {{{

function! Pointfree()
  call setline('.', split(system('pointfree '.shellescape(join(getline(a:firstline, a:lastline), "\n"))), "\n"))
endfunction
vnoremap <silent> <leader>h. :call Pointfree()<CR>

function! Pointful()
  call setline('.', split(system('pointful '.shellescape(join(getline(a:firstline, a:lastline), "\n"))), "\n"))
endfunction
vnoremap <silent> <leader>h> :call Pointful()<CR>

" }}}

" Customization {{{

if filereadable(expand("~/.vimrc.local"))
  source ~/.vimrc.local
endif

" }}}

let g:syntastic_carp_checkers = ['carp']