vimrc

set nocompatible 

set scrolloff=5     " show 5 lines above cursor

" PATHS
set path+=**	" add current directory to vim path
set wildignore+=**/__pycache__/**
set wildignore+=**/node_modules/**

" TAB BEHAVIOR
set tabstop=4		" show existing tab with 4 spaces width
set shiftwidth=4	" when indenting with '>', use 4 spaces width
set expandtab		" On pressing tab, insert 4 spaces
set smarttab        " <BS> deletes <Tab> in insert mode

" FILE FINDING
" Tweaks for browsing
let g:netrw_banner=0        " disable annoying banner
let g:netrw_browse_split=4  " open in prior window
let g:netrw_altv=1          " open splits to the right
let g:netrw_liststyle=3     " tree view
let g:netrw_list_hide=netrw_gitignore#Hide()
let g:netrw_list_hide.=',\(^\|\s\s\)\zs\.\S\+'

" BUFFER MANAGEMENT
set autoread                                    " automatically read buffers that have changed outside Vim
set hidden                                      " hide buffers instead of unloading
" Reread buffer when entering
au FocusGained,BufEnter * :silent! !
" Auto save buffer when leaving it
au FocusLost,WinLeave * :silent! noautocmd w

" SYNTAX HIGHLIGHTING
syntax enable						
filetype indent on	" Load file type specific indenting rules 
filetype plugin indent on

" LINE NUMBERS
set cursorline		" Highlight the row the cursor is one
set number		    " show absolute line number under cursor
" set relativenumber	" show line numbers relative to cursor

" MISCELLANEOUS
set mouse=a				        " Enable the mouse
set wildmenu			        " In GUI mode, tab will suggest commands for you
set showmatch 			        " Show corresponding end braces
set backspace=indent,eol,start  " Modern backspacing behaviour

" Fix for delay on <Esc>Shift+o sequence
" https://github.com/vim/vim/issues/24
set timeout timeoutlen=5000 ttimeoutlen=100

" SEARCH
set ic				" Ignore case when searching by default
set hlsearch		" Highlight search matches
set incsearch		" Search as characters are entered
" // in Visual mode will search for visually selected text
vnoremap // y/\V<C-R>=escape(@",'/\')<CR><CR>'")

" SPELLING
" z= gives suggestions on misspelling
" zg marks bad as good
" zw marks good and bad
set spelllang=en_us	" Set spell checking dictionary to English
" set spell			" Turn on spell checking 
set nospell			" Turn off spell checking


" FOLDING
set foldmethod=indent
set foldlevel=99

" PLUGINS
" https://github.com/junegunn/vim-plug#usage
" Specify a directory for plugins. Avoid using standard Vim directory names like 'plugin'
call plug#begin('~/.vim/plugged')

" Language support
Plug 'sheerun/vim-polyglot'

" Interactive file finder
Plug 'preservim/nerdtree'
let NERDTreeShowHidden=1				" Show hidden files in nerd tree
" Toggle NERDTree by Ctrl+n
nnoremap <C-N> :NERDTreeToggle<CR>

" Status and buffer line 
Plug 'vim-airline/vim-airline'
Plug 'vim-airline/vim-airline-themes'
let g:airline_theme='base16_eighties'		" Start airline with this this theme
let g:airline_powerline_fonts=1                 " Use powerline fonts
let g:airline#extensions#tabline#enabled = 1	" Show open buffers at top
" abbreviate mode to one letter, remove RHS stuff

" nouns and motions to modify surroundings
Plug 'tpope/vim-surround'

" Pair up brackets!
Plug 'jiangmiao/auto-pairs'

" Show indents with lines
Plug 'yggdroot/indentline'

Plug 'tpope/vim-commentary'

Plug 'airblade/vim-gitgutter'

Plug 'michaeljsmith/vim-indent-object'

" Fuzzy File Finding
" requires fzf: https://github.com/junegunn/fzf
Plug 'junegunn/fzf', { 'do': { -> fzf#install()  }  }
Plug 'junegunn/fzf.vim'
" HOTKEY: Open fuzzy finder with <C-P>
nnoremap <C-P> :FZF<Cr>

" grep style searching
" https://github.com/dyng/ctrlsf.vim
Plug 'dyng/ctrlsf.vim' 
" trying their recommended mappings
nmap     <C-F>f <Plug>CtrlSFPrompt
vmap     <C-F>f <Plug>CtrlSFVwordPath
vmap     <C-F>F <Plug>CtrlSFVwordExec
nmap     <C-F>n <Plug>CtrlSFCwordPath
nmap     <C-F>p <Plug>CtrlSFPwordPath
nnoremap <C-F>o :CtrlSFOpen<CR>
nnoremap <C-F>t :CtrlSFToggle<CR>
inoremap <C-F>t <Esc>:CtrlSFToggle<CR>
" Commands In CtrlSF window:
    " Enter, o, double-click - Open corresponding file of current line in the window which CtrlSF is launched from.
    " <C-O> - Like Enter but open file in a horizontal split window.
    " t - Like Enter but open file in a new tab.
    " p - Like Enter but open file in a preview window.
    " P - Like Enter but open file in a preview window and switch focus to it.
    " O - Like Enter but always leave CtrlSF window opening.
    " T - Like t but focus CtrlSF window instead of new opened tab.
    " M - Switch result window between normal view and compact view.
    " q - Quit CtrlSF window.
    " <C-J> - Move cursor to next match.
    " <C-K> - Move cursor to previous match.
    " <C-C> - Stop a background searching process.


Plug 'dense-analysis/ale'
let g:ale_linters = {'python': ['flake8', 'pydocstyle']}
let g:ale_linters_explicit = 1

Plug 'vim-test/vim-test'
let test#strategy = "vimterminal"

" LSP
Plug 'prabirshrestha/async.vim'
Plug 'prabirshrestha/vim-lsp'
Plug 'prabirshrestha/vim-lsp-settings'
let g:lsp_diagnostics_enabled = 0

" deoplete for autocompletion
" needs: pip3 install --user pynvim
if has('nvim')
  Plug 'Shougo/deoplete.nvim', { 'do': ':UpdateRemotePlugins' }
else
  Plug 'Shougo/deoplete.nvim'
  Plug 'roxma/nvim-yarp'
  Plug 'roxma/vim-hug-neovim-rpc'
  Plug 'deoplete-plugins/deoplete-jedi'
endif
let g:deoplete#enable_at_startup = 1
" TAB autocompletion https://github.com/Shougo/deoplete.nvim/issues/816
inoremap <expr><TAB>  pumvisible() ? "\<C-n>" : "\<TAB>"
inoremap <expr><S-TAB>  pumvisible() ? "\<C-p>" : "\<TAB>"
" show docstring in preview window
let g:deoplete#sources#jedi#show_docstring = 1
" close the preview window after autocomplete is finished
autocmd CompleteDone * pclose!

" Some plugins I'd like to try out:
" Plug 'tpope/vim-fugitive'
" Plug 'terryma/vim-multiple-cursors'
" Plug 'mattn/emmet-vim'
" Plug 'junegunn/limelight.vim'
" Plug 'SirVer/ultisnips'

call plug#end()

" COLORS
" load colors after plugins if using plugin color instead of ~/.vimrc/colors
set t_Co=256						" Set 256 color mode. Your terminal must support this
" colorschemes at ~/.vimrc/colors
" colorscheme solarized
" set background=dark
" colorscheme lucius
" LuciusLight
" colorscheme seoul256
" set background=light

" CUSTOM COMMANDS
command LightMode :colorscheme lucius | :set background=light
command DarkMode :colorscheme monokai | :set background=dark
command ReloadVimrc :source $MYVIMRC
command NukeIt :%bdelete|:edit .
" TODO: make color mode contingent on time. LightMode during day, DarkMode
" during night
" https://stackoverflow.com/questions/3368748/conditional-colorscheme-in-vimrc
LightMode        " use lightmode by default
" DarkMode         " use darkmode by default
" Close all other buffers but current one
" https://stackoverflow.com/questions/4545275/vim-close-all-buffers-but-this-one
command CloseOthers :%bd|e#

" KEY MAPPINGS
" I don't think I know the default commands well enough to know what should be
" overwritten. Try to learn defaults better and use custom remaps sparingly
" CTRL-H go to previous buffer
nnoremap <C-L> :bnext!<CR>
" CTRL-L go to next buffer 
nnoremap <C-H> :bprevious!<CR>