""""""""""""""""""""""""""
"         Plugins
""""""""""""""""""""""""""
" Install vim-plug if not found
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
endif

" Run PlugInstall if there are missing plugins
autocmd VimEnter * if len(filter(values(g:plugs), '!isdirectory(v:val.dir)'))
  \| PlugInstall --sync | source $MYVIMRC
\| endif

call plug#begin('~/.vim/plugged')

" UI & Themes
Plug 'joshdick/onedark.vim' " Onedark themes for vim
Plug 'vim-airline/vim-airline' " Vim statusline
Plug 'preservim/nerdtree' " Filetree in vim
Plug 'ryanoasis/vim-devicons' " Icons for vim
Plug 'tiagofumo/vim-nerdtree-syntax-highlight' " Syntax in nerdtree for files extension

" Git integration
Plug 'airblade/vim-gitgutter' " Git diff

" Autocompletion, linter, syntax
Plug 'prabirshrestha/vim-lsp' " Linter & formatter
Plug 'mattn/vim-lsp-settings' " Automatic vim-lsp installation
Plug 'prabirshrestha/asyncomplete.vim' " Autocompletion
Plug 'prabirshrestha/asyncomplete-lsp.vim' " Autocompletion & connection with vim-lsp

call plug#end()

filetype plugin indent on " Allow filetype detection, plugins, indentation

"""""""""""""""""""""""""
"	Configuration
"""""""""""""""""""""""""
" VIM airline
let g:airline_theme='onedark' " Status line color & configuration

if !exists('g:airline_symbols')
    let g:airline_symbols = {}
endif
let g:airline_symbols.colnr = ' ㏇:'
let g:airline_symbols.colnr = ' ℅:'
let g:airline_symbols.crypt = '🔒'
let g:airline_symbols.linenr = ' ☰'
let g:airline_symbols.linenr = ' ␊:'
let g:airline_symbols.linenr = ' ␤:'
let g:airline_symbols.linenr = ' ¶'
let g:airline_symbols.maxlinenr = ''
let g:airline_symbols.maxlinenr = ' ㏑'
let g:airline_symbols.branch = '⎇'
let g:airline_symbols.paste = 'ρ'
let g:airline_symbols.paste = 'Þ'
let g:airline_symbols.paste = '∥'
let g:airline_symbols.spell = 'Ꞩ'
let g:airline_symbols.notexists = 'Ɇ'
let g:airline_symbols.notexists = '∄'
let g:airline_symbols.whitespace = ' Ξ'

" VIM lsp
let g:lsp_diagnostics_echo_cursor = 1
let g:lsp_diagnostics_virtual_text_enabled = 0

" NerdTree
let NERDTreeShowHidden=1 " Show hidden files
let NERDTreeQuitOnOpen = 1 " Close a nerdtree after opening the file

" Close the tab if NERDTree is the only window remaining in it.
autocmd BufEnter * if winnr('$') == 1 && exists('b:NERDTree') && b:NERDTree.isTabTree() | quit | endif

" If another buffer tries to replace NERDTree, put it in the other window, and bring back NERDTree.
autocmd BufEnter * if bufname('#') =~ 'NERD_tree_\d\+' && bufname('%') !~ 'NERD_tree_\d\+' && winnr('$') > 1 |
    \ let buf=bufnr() | buffer# | execute "normal! \<C-W>w" | execute 'buffer'.buf | endif

" If more than one window and previous buffer was NERDTree, go back to it.
autocmd BufEnter * if bufname('#') =~# "^NERD_tree_" && winnr('$') > 1 | b# | endif