"TODO: add documentation in the vim folder for this vim config
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
call plug#begin('~/.vim/plugged')
Plug 'itchyny/lightline.vim'
Plug 'rafi/awesome-vim-colorschemes'
Plug 'mattn/emmet-vim'
Plug 'liuchengxu/vim-which-key'
Plug 'junegunn/fzf', { 'do': { -> fzf#install() } }
Plug 'junegunn/fzf.vim'
Plug 'kamil-stachowski/flatwhite-vim'
Plug 'prabirshrestha/vim-lsp'
Plug 'mattn/vim-lsp-settings'
Plug 'prabirshrestha/asyncomplete.vim'
Plug 'prabirshrestha/asyncomplete-lsp.vim'
Plug 'ap/vim-buftabline'
Plug 'sheerun/vim-polyglot'
Plug 'tpope/vim-commentary'
Plug 'prabirshrestha/asyncomplete-emmet.vim'
Plug 'keremc/asyncomplete-clang.vim'
Plug 'kalbasit/vim-colemak'
call plug#end()
let mapleader = "\<Space>"
syntax on 
"filetype
filetype on
filetype indent on
filetype plugin on
"set
set nocompatible
set fileformat=unix
set encoding=UTF-8
set number
set nowrap
set rnu
set expandtab
set tabstop=4
set shiftwidth=4
set smarttab 
set smartindent
set noswapfile
set incsearch
set ignorecase
set smartcase
set autochdir
set hidden
set virtualedit=onemore
set timeoutlen=500
set ttimeoutlen=1
set termguicolors
set laststatus=2
set noshowmode
set undofile
set undodir=~/.vim/undodir
set signcolumn=yes
set shortmess+=c
" etc
colorscheme flatwhite
nnoremap <Space> <Nop>
nnoremap <silent> <leader> :WhichKey '<Space>'<CR>
inoremap <silent> <Esc> <Esc>l
nnoremap <nowait> y w
nnoremap <leader>c "+y
vnoremap <leader>c "+y
autocmd FileType html,css EmmetInstall
"let
let g:VM_maps = {}
let g:buftabline_show = 2
let g:buftabline_numbers = 1
let g:user_emmet_leader_key='<Space>'
let g:user_emmet_mode='n'
let g:user_emmet_install_global = 0
let g:lightline = {
            \ 'colorscheme': 'one',
            \ 'background': 'light',
            \ }
let g:which_key_map = {}
let g:which_key_map.f = ['Files', 'file buffer']
let g:which_key_map.b = {
            \ 'name' : '+buffer',
            \ 'n' : ['bn', 'next buffer'],
            \ 'p' : ['bp', 'previous buffer'],
            \ 'b' : ['Buffers', 'fuzzy find buffers'],
            \ }
call which_key#register('<Space>', 'g:which_key_map')
" lsp
if executable('pylsp')
    au User lsp_setup call lsp#register_server({
        \ 'name': 'pylsp',
        \ 'cmd': {server_info->['pylsp']},
        \ 'allowlist': ['python'],
        \ })
endif
if executable('clangd')
    au User lsp_setup call lsp#register_server({
                \ 'name': 'clangd',
                \ 'cmd': {server_info->['clangd', '-background-index']},
                \ 'allowlist': ['c', 'cpp', 'objc', 'objcpp'],
                \})
endif
if executable('emmet-language-server')
    au User asyncomplete_setup call asyncomplete#register_source(asyncomplete#sources#emmet#get_source_options({
    \ 'name': 'emmet',
    \ 'whitelist': ['html'],
    \ 'completor': function('asyncomplete#sources#emmet#completor'),
    \ }))
endif
if executable('vscode-html-language-server')
  autocmd User lsp_setup call lsp#register_server({
        \ 'name': 'vscode-html-language-server',
        \ 'cmd': {server_info->[&shell, &shellcmdflag, 'vscode-html-language-server --stdio']},
        \ 'whitelist': ['html'],
        \ 'initialization_options': {
        \   'provideFormatter': v:true,
        \   'embeddedLanguages': {'css': v:true, 'javascript': v:true}
        \ }})
endif
if executable('vscode-css-language-server')
    au User lsp_setup call lsp#register_server({
                \ 'name': 'css',
                \ 'cmd': {server_info->['vscode-css-language-server']},
                \ 'allowlist': ['css', 'scss', 'less'],
                \})
endif
if executable('typescript-language-server')
    au User lsp_setup call lsp#register_server({
      \ 'name': 'javascript support using typescript-language-server',
      \ 'cmd': { server_info->[&shell, &shellcmdflag, 'typescript-language-server --stdio']},
      \ 'root_uri': { server_info->lsp#utils#path_to_uri(lsp#utils#find_nearest_parent_directory(lsp#utils#get_buffer_path(), '.git/..'))},
      \ 'whitelist': ['javascript', 'javascript.jsx', 'javascriptreact']
      \ })
endif
function! s:on_lsp_buffer_enabled() abort
    setlocal omnifunc=lsp#complete
    setlocal signcolumn=yes
    if exists('+tagfunc') | setlocal tagfunc=lsp#tagfunc | endif
    nmap <buffer> gs <plug>(lsp-document-symbol-search)
    nmap <buffer> gS <plug>(lsp-workspace-symbol-search)
    nmap <buffer> gr <plug>(lsp-references)
    nmap <buffer> gi <plug>(lsp-implementation)
    nmap <buffer> gt <plug>(lsp-type-definition)
    nmap <buffer> <leader>rn <plug>(lsp-rename)
    nmap <buffer> [g <plug>(lsp-previous-diagnostic)
    nmap <buffer> ]g <plug>(lsp-next-diagnostic)
    nmap <buffer> K <plug>(lsp-hover)
    nnoremap <buffer> <expr><c-f> lsp#scroll(+4)
    nnoremap <buffer> <expr><c-d> lsp#scroll(-4)

    let g:lsp_format_sync_timeout = 1000
    autocmd! BufWritePre *.rs,*.go call execute('LspDocumentFormatSync')
    
endfunction

augroup lsp_install
    au!
    " call s:on_lsp_buffer_enabled only for languages that has the server registered.
    autocmd User lsp_buffer_enabled call s:on_lsp_buffer_enabled()
augroup END
autocmd User asyncomplete_setup call asyncomplete#register_source(
    \ asyncomplete#sources#clang#get_source_options())