set nocompatible
set encoding=utf-8
set guifont=Iosevka:h9

if empty(glob('~/.vim/autoload/plug.vim'))
  silent !curl -fLo ~/.vim/autoload/plug.vim --create-dirs
    \ https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
  autocmd VimEnter * PlugInstall --sync | source $MYVIMRC
endif

call plug#begin('~/.vim/bundle')
" Interface
Plug 'itchyny/lightline.vim'
Plug 'airblade/vim-gitgutter'
Plug 'bling/vim-bufferline'

" Utility
Plug 'w0rp/ale'
Plug 'tpope/vim-fugitive'
Plug 'lilydjwg/colorizer', { 'on': 'ColorHighlight' }
Plug '/usr/local/opt/fzf'
Plug 'junegunn/fzf.vim'

Plug 'plasticboy/vim-markdown', {'for': 'markdown'}
Plug 'junegunn/goyo.vim', {'for': 'markdown' }
Plug 'iamcco/markdown-preview.vim', { 'for': 'markdown' }
call plug#end()

" Basic Config.
set backspace=indent,eol,start  " Backspace like normal
set hidden                      " Hide buffer (file) instead of abandoning when switching to another buffer
set wildmenu                    " Command-line autocompletion
set showmatch                   " Highlight ([{}])
set lazyredraw
set mouse=n

filetype on
filetype plugin on
filetype indent on
set smartindent

" 4 spaces tabs
set shiftwidth=4
set tabstop=4
set expandtab
set smarttab

" Search
set ignorecase                  " Ignore case wgeb searching
set smartcase                   " If there is an uppercase in your search term search case sensitive again
set incsearch                   " Highlight search when results typing
set hlsearch                    " Highlight search results

" Beep
set noerrorbells

" UI
set number relativenumber       " Display line numbers
set cursorline
set nowrap                      " Wrap lines when they are too long
set noshowmode                  " Hide --MODE--

set scrolloff=5                 " Display at least 5 lines around your cursor (for scrolling)
set guioptions=

if has('termguicolors')
  let &t_8f = "\<Esc>[38;2;%lu;%lu;%lum"
  let &t_8b = "\<Esc>[48;2;%lu;%lu;%lum"
  set termguicolors
endif
colorscheme base16-material-palenight
set background=dark

" Mappings
map <up> <nop>
map <down> <nop>
map <left> <nop>
map <right> <nop>
nnoremap j gj
nnoremap k gk
let mapleader=' '
nnoremap <leader>f :Files<CR>
nnoremap <leader>l :Lines<CR>
nnoremap <leader>a :Rg<CR>
nnoremap <leader>b :Buffers<CR>
nnoremap <leader>g :Goyo<CR>

" Lightline
set laststatus=2
set showtabline=2
let g:lightline = {
    \ 'colorscheme': 'material_palenight',
    \ 'active': {
    \   'left': [ [ 'mode', 'paste' ], [ 'readonly', 'filename', 'modified' ] ]
    \  },
    \ 'tabline': {
    \   'left': [ [ 'bufferline' ] ],
    \   'right':[ [ 'gitbranch' ] ]
    \ },
    \ 'component': {
    \   'lineinfo': '%3l:%-2v'
    \ },
    \ 'component_function': {
    \   'gitbranch': 'Lightline_GitBranch'
    \ },
    \ 'component_expand': {
    \   'bufferline': 'Lightline_Bufferline',
    \ },
    \ 'component_type': {
    \   'bufferline': 'tabsel',
    \ },
    \ 'mode_map': {
    \   'n': 'N', 'i': 'I', 'R': 'R', 'v': 'V', 'V': 'VL', "\<C-v>": 'VB',
    \   'c': 'COMMAND', 's': 'SELECT', 'S': 'S-LINE', "\<C-s>": 'S-BLOCK', 't': 'TERMINAL'
    \ },
    \ 'separator': { 'left': '', 'right': '' },
    \ 'subseparator': { 'left': '|', 'right': '|' },
    \ 'enable': { 'statusline':1, 'tabline':1 },
    \}

function! Lightline_GitBranch()
    if exists('fugitive#head')
        let branch = fugitive#head()
        return branch !=# '' ? ' '.branch : ''
    endif
    return 'Buffers'
endfunction

function! Lightline_Bufferline()
    call bufferline#refresh_status()
    return [ g:bufferline_status_info.before, g:bufferline_status_info.current, g:bufferline_status_info.after]
endfunction

" Bufferline
let g:bufferline_echo = 0
let g:bufferline_active_buffer_left = ''
let g:bufferline_active_buffer_right = ''
let g:bufferline_modified = ' +'

" Markdown
autocmd User GoyoEnter set wrap linebreak nolist
let g:goyo_width = "85%"
let g:goyo_height = '90%'
set conceallevel=2

" FZF
let g:fzf_colors =
\ { 'fg':      ['fg', 'Normal'],
  \ 'bg':      ['bg', 'Normal'],
  \ 'hl':      ['fg', 'Comment'],
  \ 'fg+':     ['fg', 'CursorLine', 'CursorColumn', 'Normal'],
  \ 'bg+':     ['bg', 'CursorLine', 'CursorColumn'],
  \ 'hl+':     ['fg', 'Statement'],
  \ 'info':    ['fg', 'PreProc'],
  \ 'border':  ['fg', 'Ignore'],
  \ 'prompt':  ['fg', 'Conditional'],
  \ 'pointer': ['fg', 'Exception'],
  \ 'marker':  ['fg', 'Keyword'],
  \ 'spinner': ['fg', 'Label'],
  \ 'header':  ['fg', 'Comment'] }

let g:is_transparent = 0
function! Toggle_transparent()
    if g:is_transparent == 0
        hi Normal guibg=NONE
        hi LineNr guifg=#676E95 guibg=NONE
        let g:is_transparent = 1
    else
        set background=dark
        let g:is_transparent = 0
    endif
endfunction
nnoremap <C-t> :call Toggle_transparent()<CR>