vimrc

syntax on
filetype plugin indent on

" set leader from default (\) to ;
let mapleader = ";"


" ********* Config Plugins **********

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" => Nerd Tree
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
let g:NERDTreeWinPos = "right"
let NERDTreeShowHidden=0
let NERDTreeIgnore = ['\.pyc$', '__pycache__']
let g:NERDTreeWinSize=35

" These mapping cause buffer switching, <leader>n, to have a small noticable
" pause while vim waits to see if I press a second letter.  I like fast buffer
" switching more that this stuff so I'm commenting it out for now.
"map <leader>nn :NERDTreeToggle<cr>
"map <leader>nb :NERDTreeFromBookmark<Space>
"map <leader>nf :NERDTreeFind<cr>
" remap ctrl-v to nerdtree  (default mapping is visual-block)
map <C-v> :NERDTreeToggle<CR>
" close vim if the only window left open is a NERDTree
autocmd bufenter * if (winnr("$") == 1 && exists("b:NERDTree") && b:NERDTree.isTabTree()) | q | endif
" ********* End NERDTree customizations **********


" ************ general vim UX ***********************


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

"Always show current position
set ruler

" Height of the command bar
set cmdheight=2

" A buffer becomes hidden when it is abandoned
set hid

" 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 novisualbell
set t_vb=
set tm=500

" Properly disable sound on errors on MacVim
if has("gui_macvim")
    autocmd GUIEnter * set vb t_vb=
endif

" Add a bit extra margin to the left
set foldcolumn=1

" basic column len before wrapping
set textwidth=79

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" => Colors and Fonts
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Enable syntax highlighting
syntax enable 

" Enable 256 colors palette in Gnome Terminal
if $COLORTERM == 'gnome-terminal'
    set t_Co=256
endif

" enable 24bit color support in vim. used for colorschemes
set termguicolors
set background=dark



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

" set vim-colorscheme 
packadd! onedark.vim
colorscheme onedark

" 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


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" => Files, backups and undo
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Turn backup off, since most stuff is in SVN, git et.c anyway...
set nobackup
set nowb
set noswapfile


"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => Text, tab and indent related
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" Use spaces instead of tabs
set expandtab

" Be smart when using tabs ;)
set smarttab

" 1 tab == 4 spaces
set shiftwidth=4
set tabstop=4


" Linebreak at <textwidth>
set lbr

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

" Have Vim jump to the last position when reopening a file
if has("autocmd")
  au BufReadPost * if line("'\"") > 1 && line("'\"") <= line("$") | exe "normal! g'\"" | endif
endif


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" => Visual mode related
""""""""""""""""""""""""""""""
" Visual mode pressing * or # searches for the current selection
" Super useful! From an idea by Michael Naumann
vnoremap <silent> * :<C-u>call VisualSelection('', '')<CR>/<C-R>=@/<CR><CR>
vnoremap <silent> # :<C-u>call VisualSelection('', '')<CR>?<C-R>=@/<CR><CR>

"set runtimepath+=~/.vim_runtime
"source ~/.vim_runtime/vimrcs/basic.vim
"source ~/.vim_runtime/vimrcs/filetypes.vim
"source ~/.vim_runtime/vimrcs/plugins_config.vim
"source ~/.vim_runtime/vimrcs/extended.vim

try
"source ~/.vim_runtime/my_configs.vim
catch
endtry


" make buffer cycling easier
map gn :bn<cr>
map gp :bp<cr>
map gd :bd<cr>
" same as above, but using the leaderkey (;)
nnoremap <leader>n :bn<cr>
nnoremap <leader>p :bp<cr>
nnoremap <leader>d :bd<cr>

" vim-go shortcuts
nnoremap <leader>t :GoCoverageToggle
nnoremap <leader>f :GoTestFunc

" show column limit; number based off of textwidth setting.
" If textwidth is not set, the warning line is at col 256
" set colorcolumn=+1
" set textwidth=80  " in the future, should base this on filetype
" draw warning line as darkgrey
" hi ColorColumn ctermbg=darkgrey guibg=red

" show line numbers in gutter. relativenumber makes scrolling slow.
set number
" change to show non-relative numbers when focus leaves window
"augroup numbertoggle
"  autocmd!
"  autocmd BufEnter,FocusGained,InsertLeave * set relativenumber
"  autocmd BufLeave,FocusLost,InsertEnter   * set norelativenumber
"augroup END

" set vim-airline theme colors
let g:airline_theme='onedark'
" turn on buffer display at top of window
let g:airline#extensions#tabline#enabled = 1