" VIM configuration

" Basic options
syn on
set nu
set background=dark
set nobackup
set nowritebackup
set noswapfile
set noautoindent
set nosmartindent
set tabstop=2
set shiftwidth=2
set expandtab
set mouse=a
set autoread
set nocompatible
set laststatus=2
set shortmess+=I
set ignorecase
set smartcase
filetype indent off
let mapleader="-"

" Window title handling
set title
set titleold="terminal"
set titlestring=vim:\ %F

" See http://vim.wikia.com/wiki/Set_working_directory_to_the_current_file
"set autochdir
augroup changedir
  autocmd!
  autocmd BufEnter * silent! lcd %:p:h
augroup END

" Thanks to http://stackoverflow.com/questions/1673649/vimrc-action-onclose
function! ResetTitle(title)
    " disable vim's ability to set the title
    exec "set title t_ts='' t_fs=''"

    " and restore it
    "exec ":!echo -e '\033kbash\033\\'\<CR>"
    exec ":!xtitle -q " a:title
endfunction

" Avoid autocmd spam by using augroups and reseting autocmd
" https://stackoverflow.com/questions/19030290/syntax-highlighting-causes-terrible-lag-in-vim
augroup vimleave
  autocmd!
  au VimLeave *mutt/*   silent call ResetTitle("mutt")
  au VimLeave *remind/* silent call ResetTitle("calendar")
augroup END

" Command mode completion
" See https://stackoverflow.com/questions/526858/how-do-i-make-vim-do-normal-bash-like-tab-completion-for-file-names
"set wildmode=longest,list
set wildmode=longest,list,full
set wildmenu

" Syntax highlight
syntax on

" Indenting
filetype plugin indent on

" Folding
" Disabled due to slowness
"set foldmethod=syntax
"set foldlevelstart=99
"let g:sh_fold_enabled=1
"let javaScript_fold=1
"let perl_fold=1
"let php_folding=1
"let r_syntax_folding=1
"let ruby_fold=1
"let sh_fold_enabled=1
"let vimsyn_folding='af'
"let xml_syntax_folding=1

" Setup https://github.com/masukomi/vim-markdown-folding
" Alternative method: https://codereview.stackexchange.com/questions/202620/vim-plugin-for-folding-markdown-lists
autocmd FileType markdown set foldexpr=NestedMarkdownFolds()

" Filetypes
augroup vimrc_syntax
  autocmd!
  au BufNewFile,BufRead *.vue       set ft=html
  au BufNewFile,BufRead *.thtml     set ft=php
  au BufNewFile,BufRead *.mdwn      set ft=ikiwiki
  au BufNewFile,BufRead *.md        set ft=markdown
  au BufNewFile,BufRead *.rem       set ft=remind
  au BufNewFile,BufRead *.trac      set ft=tracwiki
  au BufNewFile,BufRead *.tracwiki  set ft=tracwiki
  au BufNewFile,BufRead Vagrantfile set ft=ruby
  au BufNewFile,BufRead kvmxfile    set ft=sh
augroup END

" Markdown
augroup markdown
  autocmd!
  autocmd BufRead *.md set autoindent smartindent tabstop=2 softtabstop=2 shiftwidth=2 expandtab formatoptions=tcroqn2 comments=n:>
augroup END

" Drupal *.module and *.install files.
if has("autocmd")
  augroup module
    autocmd!
    autocmd BufRead,BufNewFile *.profile set filetype=php
    autocmd BufRead,BufNewFile *.module  set filetype=php
    autocmd BufRead,BufNewFile *.install set filetype=php
    autocmd BufRead,BufNewFile *.test    set filetype=php
  augroup END
endif

" PHP
let php_sql_query=1

" No modelines
" https://lwn.net/Articles/20249/
" http://usevim.com/2012/03/28/modelines/
" http://www.techrepublic.com/blog/it-security/turn-off-modeline-support-in-vim/
set nomodeline
set modelines=0

" Syntax check
let g:syntastic_mode_map={ 'mode': 'passive',
                           \ 'active_filetypes': [],
                           \ 'passive_filetypes': [] }

"
" Key Mappings
" https://stackoverflow.com/questions/7501092/can-i-map-alt-key-in-vim
" https://stackoverflow.com/questions/45244245/why-alt-and-esc-keys-behave-differently-in-emacs
" http://vim.wikia.com/wiki/Mapping_fast_keycodes_in_terminal_Vim
" https://github.com/vim-utils/vim-alt-mappings
" https://github.com/drmikehenry/vim-fixkey
"
" Notes:
"
" Keys were chosen not to conflict of to be close to window manager combos
" Like Awesome has a combo (Meta-q) which could be confused with a VIM quit
" mapping (Alt-q).
"
" Other keys were chosen not to conflict with existing VIM functionality
" like Alt-t (OpenNerdTree).
"
" While we could try to map other meta keys like Menu or AltGr, this
" is currently not supported by VIM and could even cause more confusion with
" other applications.
"
" For the quit combo, an approach like listening to VimLeave would work if
" this event would be triggered by the window manager when killing VIM window,
" but this does not seem to be the case. Anyway there's interesting discussion at
" https://stackoverflow.com/questions/5142099/how-to-auto-save-vim-session-on-quit-and-auto-reload-on-start-including-split-wi
"
" Pressing Alt-<key> simultaneously is equivalent to pressing ESC and then <key>,
" so the big difference between the ESC combos and Alt combos are mainly of
" config file notation.
"
" Typing ESC keys combos have the advantage over Alt combos as they are
" difficult to be mistaken for the Meta key, but thats mainly a user and not
" config convention since they're almost the same in VIM.
"
" In the other hand, there's an disadvantage of using ESC simultaneously for
" going to normal mode and doing other stuff, with can be in ambiguous.
"
" The sollution is to decrease ESC timeout.
"
" See https://www.johnhawthorn.com/2012/09/vi-escape-delays/
"set timeoutlen=1000 ttimeoutlen=0
set timeoutlen=0 ttimeoutlen=0

" Write, quit and close shortcuts using Esc <key> notation (works also with <Alt-key>)
nnoremap <ESC>n :tabnew<CR>
nnoremap <ESC>t :NERDTree 
nnoremap <ESC>T :T 
"nnoremap <ESC>q :wqa<CR>
"noremap <ESC>c :wqa<CR>
nnoremap <ESC>f :wq<CR>
nnoremap <ESC>c :tabclose<CR>
"noremap <ESC>e :tabclose<CR>
nnoremap <ESC>b :NERDTreeFromBookmark 
nnoremap <ESC>B :B 
nnoremap <ESC>s :OpenSession 
"nnoremap <ESC>m :q!<CR>
" We're closing the buffer instead of just the window to avoid slowness due to too many opened buffers
nnoremap <ESC>m :bd<CR>
nnoremap <ESC>w :w<CR>
nnoremap <ESC>u :!up<CR>
inoremap <ESC>n <ESC>:tabnew<CR>
inoremap <ESC>t <ESC>:NERDTree 
inoremap <ESC>t <ESC>:T 
"inoremap <ESC>q <ESC>:wqa<CR>
"noremap <ESC>c <ESC>:wqa<CR>
inoremap <ESC>f <ESC>:wq<CR>
inoremap <ESC>c <ESC>:tabclose<CR>
"noremap <ESC>e <ESC>:tabclose<CR>
"inoremap <ESC>m <ESC>:q!<CR>
" We're closing the buffer instead of just the window to avoid slowness due to too many opened buffers
inoremap <ESC>m <ESC>:bd<CR>
inoremap <ESC>w <ESC>:w<CR>

" Write, quit and close shortcuts using Alt-key combo notation
"noremap n :tabnew<CR>
"noremap t :OpenNERDTree<CR>
"noremap q :wqa<CR>
"noremap c :wqa<CR>
"noremap f :wq<CR>
"noremap c :tabclose<CR>
"noremap e :tabclose<CR>
"nnoremap b :NERDTreeFromBookmark 
"nnoremap B :B 
"nnoremap s :OpenSession 
"noremap m :q!<CR>
"noremap w :w<CR>
"noremap u :!up<CR>
"inoremap n <ESC>:tabnew<CR>
"inoremap t <ESC>:OpenNERDTree<CR>
"inoremap q <ESC>:wqa<CR>
"inoremap c <ESC>:wqa<CR>
"inoremap f <ESC>:wq<CR>
"inoremap c <ESC>:tabclose<CR>
"inoremap e <ESC>:tabclose<CR>
"inoremap m <ESC>:q!<CR>
"inoremap w <ESC>:w<CR>

" Write, quit and close shortcuts using Ctrl-key combos
" We're using these due to a conflict with wyrd(1)
"nnoremap <C-n> :tabnew<CR>
"nnoremap <C-t> :OpenNERDTree<CR>
"nnoremap <C-q> :wqa<CR>
"nnoremap <C-c> :wqa<CR>
"nnoremap <C-f> :wq<CR>
"nnoremap <C-c> :tabclose<CR>
"nnoremap <C-e> :tabclose<CR>
"nnoremap <C-b> :NERDTreeFromBookmark 
"nnoremap <C-B> :B 
"nnoremap <C-s> :OpenSession 
"nnoremap <C-m> :q!<CR>
"nnoremap <C-w> :w<CR>
"inoremap <C-n> <ESC>:tabnew<CR>
"inoremap <C-t> <ESC>:OpenNERDTree<CR>
"inoremap <C-q> <ESC>:wqa<CR>
"inoremap <C-c> <ESC>:wqa<CR>
"inoremap <C-f> <ESC>:wq<CR>
"inoremap <C-c> <ESC>:tabclose<CR>
"inoremap <C-e> <ESC>:tabclose<CR>
"inoremap <C-m> <ESC>:q!<CR>
"inoremap <C-w> <ESC>:w<CR>

" Write, quit and close shortcuts
noremap q :Wipeout<CR>:wqa <CR>
"noremap f :wq <CR>
"noremap t :tabclose <CR>
"noremap m :q! <CR>
"noremap w :w <CR>
noremap h :tabnew<CR>

" Tab navigation
" See http://vim.wikia.com/wiki/Alternative_tab_navigation
"     http://comments.gmane.org/gmane.os.cygwin.xfree/16419
nnoremap    <ESC>[5^    <C-PageUp>
nnoremap    <ESC>[6^    <C-PageDown>
nnoremap <C-PageDown> :tabn<CR>
nnoremap <C-PageUp> :tabp<CR>
nnoremap 1 1gt
nnoremap 2 2gt
nnoremap 3 3gt
nnoremap 4 4gt
nnoremap 5 5gt
nnoremap 6 6gt
nnoremap 7 7gt
nnoremap 8 8gt
nnoremap 9 9gt
nnoremap 0 10gt

" Buffer navigation: Alt-{Up,Down}
noremap Od :bprevious<CR>
noremap Oc :bnext<CR>

" Window navigation
"noremap <C-Left> <C-w><Left>
"noremap <C-Right> <C-w><Right>
"noremap <C-Down> <C-w><Down>
"noremap <C-Up> <C-w><Up>
"inoremap <C-Left> <ESC><C-w><Left>
"inoremap <C-Right> <ESC><C-w><Right>
"inoremap <C-Down> <ESC><C-w><Down>
"inoremap <C-Up> <ESC><C-w><Up>
"noremap <Left> <C-w><Left>
"noremap <Right> <C-w><Right>
"noremap <Down> <C-w><Down>
"noremap <Up> <C-w><Up>
"inoremap <Left> <ESC><C-w><Left>
"inoremap <Right> <ESC><C-w><Right>
"inoremap <Down> <ESC><C-w><Down>
"inoremap <Up> <ESC><C-w><Up>
nnoremap <ESC><Left> <C-w><Left>
nnoremap <ESC><Right> <C-w><Right>
nnoremap <ESC><Down> <C-w><Down>
nnoremap <ESC><Up> <C-w><Up>
inoremap <ESC><Left> <ESC><C-w><Left>
inoremap <ESC><Right> <ESC><C-w><Right>
inoremap <ESC><Down> <ESC><C-w><Down>
inoremap <ESC><Up> <ESC><C-w><Up>

" Recording
nnoremap Q q

" NERDTree section
" Thanks to http://stackoverflow.com/questions/1447334/how-do-you-add-nerdtree-to-your-vimrc

let NERDTreeMinimalUI=1

augroup nerdtree
  autocmd!
  " Open NERDTree when vim starts
  "autocmd VimEnter * NERDTree
  "autocmd VimEnter * wincmd p

  autocmd FileType nerdtree set relativenumber
  autocmd FileType taglist  set relativenumber
augroup END

function TabNew(address)
  execute ":tabnew"
  execute ":NERDTree " a:address
endfunction

function TabNewBookmark(bookmark)
  execute ":tabnew"
  execute ":NERDTreeFromBookmark " a:bookmark
endfunction

function OpenNERDTree()
  execute ":NERDTree"
endfunction

" Shortcuts
cnoreabbrev t NERDTree
cnoreabbrev b NERDTreeFromBookmark
cnoreabbrev s OpenSession
cnoreabbrev sload OpenSession
cnoreabbrev ssave SaveSession
command -nargs=1 -complete=dir T :call TabNew(<f-args>)
command -nargs=1 -complete=customlist,nerdtree#completeBookmarks B :call TabNewBookmark(<f-args>)
command -nargs=0 OpenNERDTree :call OpenNERDTree()

" See http://superuser.com/questions/10588/how-to-make-cut-copy-paste-in-gvim-on-ubuntu-work-with-ctrlx-ctrlc-ctrlv
"imap <C-v> <C-r><C-o>+
"vmap <C-v> c<ESC>"+p
vnoremap <C-c> "+yi
vnoremap <C-x> "+c

" Workaround for mail editing. There must be a plugin enabling autoindent in
" mail composition, which is annoying.
augroup mail
  autocmd!
  au FileType mail set noautoindent
augroup END

" For email: unfold and delete to your signature
" See https://hroy.eu/tips/vim/email-delete-til-signature/
noremap ,dd zi:.;/^-- $/d<CR>O-- <UP><End><CR><CR><UP><CR><C-O>zi

" Color scheme
"colorscheme github
"colorscheme solarized
"colorscheme gentooish
"colorscheme revolutions
"colorscheme two2tango
"colorscheme vj
"colorscheme wood
"colorscheme zenburn
"colorscheme inkpot
if $WINDOWID != ""
  colorscheme xoria256
else
  colorscheme zenburn
endif

" Airline
if $WINDOWID != ""
  let g:airline_powerline_fonts=1
  let g:airline#extensions#tabline#enabled=1
else
  let g:loaded_airline = 1
endif

" Powerline
"python from powerline.vim import setup as powerline_setup
"python powerline_setup()
"python del powerline_setup

set laststatus=2 " Always display the statusline in all windows
set showtabline=2 " Always display the tabline, even if there is only one tab
set noshowmode " Hide the default mode text (e.g. -- INSERT -- below the statusline)

" See
" http://vim.wikia.com/wiki/Have_Vim_check_automatically_if_the_file_has_changed_externally
" http://stackoverflow.com/questions/2490227/how-does-vims-autoread-work
" http://stackoverflow.com/questions/2490227/how-does-vims-autoread-work
"au FocusGained,BufEnter * :silent! !
"au FocusLost,WinLeave * :silent! w

" Session management, see:
" http://usevim.com/2013/07/05/sessions/
" https://github.com/xolox/vim-session
" https://github.com/tpope/vim-obsession
" http://stackoverflow.com/questions/1642611/how-to-save-a-session-in-vim
" https://bocoup.com/weblog/sessions-the-vim-feature-you-probably-arent-using/
" http://vimdoc.sourceforge.net/htmldoc/usr_21.html#21.4
"let g:session_autosave_periodic=1
let g:session_autosave_silent=1
let g:session_autosave='yes'
let g:session_autoload='no'
let g:session_directory='~/.local/share/vim/sessions'

" Don't save hidden and unloaded buffers in sessions.
" https://github.com/xolox/vim-session?tab=readme-ov-file#options
set sessionoptions-=buffers

" Autosave
" See https://github.com/vim-scripts/vim-auto-save
"let g:auto_save = 1