VIM

" Comment

" General Options
" ----------------------------
" Require certain number of lines to be shown below/above cursor
set scrolloff=2


" Colour Themes
" ----------------------------
"colorscheme lightblue
syntax enable


" Movement
" ----------------------------
" Map keys
map! ^? <backspace>
imap ^? <backspace>


" Formatting
" ----------------------------
set tabstop=4
set shiftwidth=4
set expandtab
set noautoindent

"map!  <Left>
"imap  <Left>
"map!  <Right>
"imap  <Right>
"map <A-Right> <C-w>l
"map <A-Left> <C-w>h

" Hybrid line numbers
set nu rnu


" Search
" ----------------------------
"Search as characters are entered
set incsearch

" Ignore case
set ignorecase

" RegEx search: always be very magic
nnoremap / /\v
vnoremap / /\v

" Remove highlighting from search
" <Ctrl-l> redraws the screen and removes any search highlighting.
nnoremap <silent> <C-l> :nohl<CR><C-l>


" Other
" ----------------------------

"set encoding=UTF-8

set wrap
set pastetoggle=<F2>
set smartcase

filetype plugin indent on "Enabling Plugin & Indent
set autoread
"set spelllang=en_uk ",de_de
set spell
set backspace=indent,eol,start "Making sure backspace works
set noruler
set confirm

"Prevent multiple calls to syntax on (can mess up highlighting)
if !exists("g:syntax_on")
    syntax enable
endif

"Detect filetype
filetype on


"Require certain number of lines to be shown below/above cursor
set scrolloff=4

"Do not redraw screen whilst executing macros
"set lazyredraw

"Dictate location of new windows after splits
"set splitright
"set splitbelow

"Enable simple copy/pasting from visual mode (when using vim GUI)
"set guioptions+=Autoselect

"Folding method based on indent of code
"set foldmethod=indent
"set foldlevel=99

"Do not require save before switching buffers
"set hidden

"Use dracula color theme
"syntax on
"color dracula

"Use lightblue color theme
"syntax enable
"colorscheme lightblue

"Enable mouse usage
set mouse=a

"Enable simple copy/pasting from visual mode (when using vim GUI)
set guioptions+=Autoselect

"Folding method based on indent of code
set foldmethod=indent
set foldlevel=99

"Do not require save before switching buffers
set hidden

"Allow single j and k movements to treat wrapped lines separately.
""Strict linewise movement resumed when preceeded with a count.
"nnoremap <expr> j v:count ? 'j' : 'gj'
"nnoremap <expr> k v:count ? 'k' : 'gk'

"Remap H and L to SOF and EOL
"nnoremap H ^
"nnoremap L $

" ------- Prevent use of arrow keys  --------
"Normal mode arrow keys
nnoremap <Left> :echo "h"<CR>
nnoremap <Right> :echo "l"<CR>
nnoremap <Up> :echo "k"<CR>
nnoremap <Down> :echo "j"<CR>

"Visual mode arrow keys
vnoremap <Left> :<C-u>echo "h"<CR>
vnoremap <Right> :<C-u>echo "l"<CR>
vnoremap <Up> :<C-u>echo "k"<CR>
vnoremap <Down> :<C-u>echo "j"<CR>

"Insert mode arrow keys
inoremap <Left> <nop>
inoremap <Right> <nop>
inoremap <Up> <nop>
inoremap <Down> <nop>

"Map keys
"map! ^? <backspace>
"imap ^? <backspace>

"Map arrow keys
"map! ^[f <Left>
"imap ^[f <Left>
"map! ^[b <Right>
"imap ^[b <Right>
"map <A-Right> <C-w>l
"map <A-Left> <C-w>h

" ---------------------------

"Shortcuts to switch through buffers with ctrl
"noremap <C-J> :bnext<CR>
"noremap <C-K> :bprev<CR>

"Shortcuts to switch through errors (displayed by Syntastic)
"nnoremap <C-PageDown> :lnext<CR>
"nnoremap <C-PageUp> :lprev<CR>

""Switch between open windows
"noremap <C-h> <C-W><C-h>
"noremap <C-l> <C-W><C-l>

set nu
set rnu
set number
set number relativenumber

"Show existing tab with 4 spaces width
set tabstop=4

"When indenting with '>', use 4 spaces width
set shiftwidth=4

"How many spaces are used in insert mode
set softtabstop=4

"Maintain indent from current line to next line
set autoindent
set noautoindent

"Smart indent
set smartindent

"Wrapped lines follow indentation
set breakindent

"Show linewrapping by indicating \\ for wrapped line
set showbreak=\\\\\

set textwidth=80

"Show vertical indicator at a textwidth of 80
set colorcolumn=88

set fileformat=unix

"Underline the current line
set cursorline

"Disable comment autowrapping, auto insertion of comment leader
autocmd FileType * set formatoptions -=cro

" ???
set expandtab

"Set ignore case
set ignorecase
set ic

"Highlight all matches when searching
set hlsearch
nnoremap <leader><space> :nohlsearch<CR>

"Search as characters are entered
set incsearch

"Enable autocompletion
"longest inserts the longest common text
"menu ensures a menu still pops up, even if only one selection is shown
set completeopt=longest,menuone

"Enables possible files to be listed when using tab completion with :e <filename-partial>< <TAB> >
set wildmenu
set wildmode=full

"Allow fuzzy searching down through folders
set path+=**

"Recursively search for ctags file up to root folder until one is found
set tags+=./tags,tags;

"Easy acces to Explore and Sexplore
noremap <leader>e :Explore<cr>
noremap <leader>s :Lexplore<cr>

" -------------- Netrw options --------------
"Restrict window size
let g:netrw_winsize = -28

"Remove netrw banner
let g:netrw_banner = 0

"Use tree style listing for files
let g:netrw_liststyle = 3

"Directories on top and files below
let g:netrw_sort_sequence = '[\/]$,*'

nnoremap <silent> <C-l> :nohl<CR><C-l>

set laststatus=2 "Always show statusline (deafault: only shown when files open > 1)
set statusline=
set statusline+=%7*\[%n]
set statusline+=%#PmenuSel#
set statusline+=\%F
set statusline+=\%{fugitive#statusline()}
set statusline+=%=
set statusline+=%#CursorColumn#
set statusline+=\%y
set statusline+=\%{&fileencoding?&fileencoding:&encoding}
set statusline+=\[%{&fileformat}\]
set statusline+=\%p%%
set statusline+=\%l:%c

call plug#begin('~/.vim/plugged/')
    Plug 'luochen1990/rainbow'
    " Plug 'Valloric/YouCompleteMe' "needs to be compiled!
    Plug 'shime/vim-livedown'
    Plug 'easymotion/vim-easymotion'
    Plug 'scrooloose/syntastic'
    Plug 'Yggdroot/indentLine'
    Plug 'machakann/vim-highlightedyank'

    
    Plug 'airblade/vim-gitgutter'       "Shows changes when working with git
    Plug 'junegunn/goyo.vim'            "Simple Markdown theme
    Plug 'junegunn/gv.vim'

    "Syntax
    Plug 'tpope/vim-fugitive'
    Plug 'tpope/vim-markdown'
    Plug 'tpope/vim-commentary'
    Plug 'ap/vim-css-color'             "Previews CSS colours
    Plug 'vim-scripts/fountain.vim'

    "Colour-schemes
    Plug 'dracula/vim', { 'as': 'dracula' }
    Plug 'morhetz/gruvbox'              "
    Plug 'jacoborus/tender.vim'
    Plug 'joshdick/onedark.vim'
call plug#end()


""" rainbow
let g:rainbow_active = 1

""" GitGutter
"Decrease time between updates (done for GitGutter) (default 4000, i.e. 4 seconds)
set updatetime=1000
let g:gitgutter_highlight_lines=1
let g:gitgutter_max_signs=9999

""" Livedown
" should markdown preview get shown automatically upon opening markdown buffer
let g:livedown_autorun = 0
" should the browser window pop-up upon previewing
let g:livedown_open = 1
" the port on which Livedown server will run
let g:livedown_port = 1337
" the browser to use
let g:livedown_browser = "firefox"

""" EasyMotion
let g:EasyMotion_do_mapping = 0
map <SPACE>w <Plug>(easymotion-w)
map <SPACE>b <Plug>(easymotion-b)
map <SPACE>s <Plug>(easymotion-s2)
map <SPACE>j <Plug>(easymotion-j)
map <SPACE>k <Plug>(easymotion-k)

""" Syntastic
set statusline+=%#warningmsg#
set statusline+=%{SyntasticStatuslineFlag()}
set statusline+=%*

let g:syntastic_always_populate_loc_list = 1
let g:syntastic_auto_loc_list = 1
let g:syntastic_check_on_open = 1
let g:syntastic_check_on_wq = 0

""" IndentLine
let g:indentLine_setColors = 0

""" highlightedyank
if !exists('##TextYankPost')
	map y <Plug>(highlightedyank)
endif
let g:highlightedyank_highlight_duration = 1500

function! TrimWhitespace()
	let l:save = winsaveview()
	%s/\s\+$//e
	call winrestview(l:save)
endfunction

command! TrimWhitespace call TrimWhitespace()