set nocompatible              " be iMproved, required
filetype on                  " required

"set rtp+=~/.vim/bundle/Vundle.vim
"call vundle#begin()
call plug#begin('~/.vim/plugged')

Plug 'scrooloose/syntastic'
Plug 'rust-lang/rust.vim'
Plug 'fatih/vim-go'
Plug 'kageru/kotlin-vim'
"Plug 'Valloric/YouCompleteMe'
Plug 'phanviet/vim-monokai-pro'
Plug 'cespare/vim-toml'
Plug 'sirver/UltiSnips'
Plug 'honza/vim-snippets'
Plug 'lotabout/skim', { 'dir': '~/.skim', 'do': './install' }
Plug 'lotabout/skim.vim'
"Plug 'ervandew/supertab'
Plug 'powerline/powerline'
Plug 'elmcast/elm-vim'
Plug 'tpope/vim-fugitive'
Plug 'mileszs/ack.vim'

" rp call thing for auto completion with language servers
"Plug 'roxma/nvim-yarp'
" language client stuff
"Plug 'autozimu/LanguageClient-neovim', {
    "\ 'branch': 'next',
    "\ 'do': 'bash install.sh',
    "\ }
Plug 'neoclide/coc.nvim', {'branch': 'release'}
"Plug 'ncm2/ncm2'
"Plug 'ncm2/ncm2-jedi'
"Plug 'ncm2/ncm2-ultisnips'
"Plug 'ncm2/ncm2-racer'
"Plug 'zxqfl/tabnine-vim'


let g:go_def_mode='gopls'
let g:go_info_mode='gopls'

"call vundle#end()            " required
call plug#end()
"set rtp+=~/code/tabnine-vim
filetype plugin on
autocmd BufNewFile,BufRead *.vpy setfiletype python
autocmd BufNewFile,BufRead *.kt setfiletype kotlin

" for ncm2 completion
"autocmd BufEnter * call ncm2#enable_for_buffer()
"set completeopt=noinsert,menuone,noselect
" When the <Enter> key is pressed while the popup menu is visible, it only
" hides the menu. Use this mapping to close the menu and also start a new line.
"inoremap <expr> <CR> (pumvisible() ? "\<c-y>\<cr>" : "\<CR>")
" Use <TAB> to select the popup menu:
"imap <Tab> <C-n>
"inoremap <expr> <Tab> pumvisible() ? "\<C-n>" : "\<Tab>"
"inoremap <expr> <S-Tab> pumvisible() ? "\<C-p>" : "\<S-Tab>"

" Required for operations modifying multiple buffers like rename.
set hidden

    "\ 'rust': ['rustup', 'run', 'stable', 'rls'],
    "\ 'rust': ['rustup', 'run', 'nightly', 'rls'],
let g:LanguageClient_serverCommands = {
    \ 'rust': ['rust-analyzer'],
    \ 'haskell': ['hie-wrapper'],
    \ 'python': ['/usr/bin/pyls'],
    \ 'go': ['gopls'],
    \ 'kotlin': ['/usr/bin/kotlin-language-server'],
    \ 'c': ['/usr/bin/ccls'],
    \ 'elm': ['/home/kageru/build/node_modules/.bin/elm-language-server'],
    \ }

nnoremap <F5> :call LanguageClient_contextMenu()<CR>
" Or map each action separately
nnoremap <silent> K :call LanguageClient#textDocument_hover()<CR>
"nnoremap <silent> gd :call LanguageClient#textDocument_definition()<CR>
nnoremap <silent> <F6> :call LanguageClient#textDocument_rename()<CR>

set number
set showmatch
 
set hlsearch
set ignorecase
set smartcase
set incsearch
 
set autoindent
set cindent
set expandtab
set shiftwidth=2
set smartindent
set smarttab
set softtabstop=2
set relativenumber
 
" set beam cursor in insert mode
let &t_SI = "\<esc>[5 q"
let &t_SR = "\<esc>[5 q"
let &t_EI = "\<esc>[2 q"

set undolevels=1000
set backspace=indent,eol,start

set background=dark
let &t_8f = "\<Esc>[38;2;%lu;%lu;%lum"
let &t_8b = "\<Esc>[48;2;%lu;%lu;%lum"
let g:autofmt_autosave = 1
set termguicolors
colorscheme monokai_pro
syntax on

let g:netrw_liststyle = 3
let g:netrw_banner = 0
let g:netrw_browse_split = 4
let g:netrw_winsize = 15
nmap <F2> :Vexplore<Return>
autocmd BufNewFile,BufRead *.rs nmap <C-A-L> :RustFmt<Return>
autocmd BufNewFile,BufRead *.elm nmap <C-A-L> :ElmFormat<Return>


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 = 0
let g:syntastic_check_on_wq = 0
let g:syntastic_check_on_write = 0
let g:syntastic_mode_map = { 'mode': 'passive' }
nmap <F3> :SyntasticCheck<CR>

let g:elm_syntastic_show_warnings = 1
let g:ycm_semantic_triggers = {
     \ 'elm' : ['.'],
     \}

let g:LanguageClient_rootMarkers = {
  \ 'elm': ['elm.json'],
  \ }


nnoremap <C-J> <C-W>j
nnoremap <C-K> <C-W>k
"nnoremap <C-L> <C-W>l
nnoremap <C-H> <C-W>h
set splitbelow
set splitright

nmap <S-Tab> :Snippets<CR>
nmap <C-G> :Files<CR>
imap <C-G> <Esc>:Files<CR>
nmap <S-L> :BLines<CR>
nmap <C-F> :Lines<CR>
nmap <C-B> :Buffers<CR>
imap <C-B> <Esc>:Buffers<CR>

let g:powerline_pycmd="py3"

let g:ackprg = 'rg --vimgrep --smart-case'
let g:ack_autoclose = 1
let g:ack_use_cword_for_empty_search = 1
nnoremap <Leader>/ :Ack!<Space>

" COC stuff from here


" Some servers have issues with backup files, see #649.
set nobackup
set nowritebackup

" Give more space for displaying messages.
"set cmdheight=2

" Having longer updatetime (default is 4000 ms = 4 s) leads to noticeable
" delays and poor user experience.
set updatetime=300

" Don't pass messages to |ins-completion-menu|.
set shortmess+=c

if has("patch-8.1.1564")
  " Recently vim can merge signcolumn and number column into one
  set signcolumn=number
else
  set signcolumn=yes
endif

" Use tab for trigger completion with characters ahead and navigate.
" NOTE: Use command ':verbose imap <tab>' to make sure tab is not mapped by
" other plugin before putting this into your config.
inoremap <silent><expr> <TAB>
      \ pumvisible() ? "\<C-n>" :
      \ <SID>check_back_space() ? "\<TAB>" :
      \ coc#refresh()
inoremap <expr><S-TAB> pumvisible() ? "\<C-p>" : "\<C-h>"

function! s:check_back_space() abort
  let col = col('.') - 1
  return !col || getline('.')[col - 1]  =~# '\s'
endfunction

" Use <c-space> to trigger completion.
if has('nvim')
  inoremap <silent><expr> <A-space> coc#refresh()
else
  inoremap <silent><expr> <c-@> coc#refresh()
endif

" Use <cr> to confirm completion, `<C-g>u` means break undo chain at current
" position. Coc only does snippet and additional edit on confirm.
" <cr> could be remapped by other vim plugin, try `:verbose imap <CR>`.
if exists('*complete_info')
  inoremap <expr> <cr> complete_info()["selected"] != "-1" ? "\<C-y>" : "\<C-g>u\<CR>"
else
  inoremap <expr> <cr> pumvisible() ? "\<C-y>" : "\<C-g>u\<CR>"
endif

" Use `[g` and `]g` to navigate diagnostics
" Use `:CocDiagnostics` to get all diagnostics of current buffer in location list.
nmap <silent> [g <Plug>(coc-diagnostic-prev)
nmap <silent> ]g <Plug>(coc-diagnostic-next)

" GoTo code navigation.
nmap <silent> gd <Plug>(coc-definition)
nmap <silent> gy <Plug>(coc-type-definition)
nmap <silent> gi <Plug>(coc-implementation)
nmap <silent> gr <Plug>(coc-references)

" Use K to show documentation in preview window.
nnoremap <silent> K :call <SID>show_documentation()<CR>

function! s:show_documentation()
  if (index(['vim','help'], &filetype) >= 0)
    execute 'h '.expand('<cword>')
  else
    call CocAction('doHover')
  endif
endfunction

" Highlight the symbol and its references when holding the cursor.
autocmd CursorHold * silent call CocActionAsync('highlight')

" Symbol renaming.
nmap <leader>rn <Plug>(coc-rename)
nmap F6 <Plug>(coc-rename)

" Formatting selected code.
xmap <leader>f  <Plug>(coc-format-selected)
nmap <leader>f  <Plug>(coc-format-selected)

augroup mygroup
  autocmd!
  " Setup formatexpr specified filetype(s).
  autocmd FileType typescript,json setl formatexpr=CocAction('formatSelected')
  " Update signature help on jump placeholder.
  autocmd User CocJumpPlaceholder call CocActionAsync('showSignatureHelp')
augroup end

" Applying codeAction to the selected region.
" Example: `<leader>aap` for current paragraph
xmap <leader>a  <Plug>(coc-codeaction-selected)
nmap <leader>a  <Plug>(coc-codeaction-selected)

" Remap keys for applying codeAction to the current buffer.
nmap <leader>ac  <Plug>(coc-codeaction)
" Apply AutoFix to problem on the current line.
nmap <leader>qf  <Plug>(coc-fix-current)

" Map function and class text objects
" NOTE: Requires 'textDocument.documentSymbol' support from the language server.
xmap if <Plug>(coc-funcobj-i)
omap if <Plug>(coc-funcobj-i)
xmap af <Plug>(coc-funcobj-a)
omap af <Plug>(coc-funcobj-a)
xmap ic <Plug>(coc-classobj-i)
omap ic <Plug>(coc-classobj-i)
xmap ac <Plug>(coc-classobj-a)
omap ac <Plug>(coc-classobj-a)

" Use CTRL-S for selections ranges.
" Requires 'textDocument/selectionRange' support of language server.
nmap <silent> <C-s> <Plug>(coc-range-select)
xmap <silent> <C-s> <Plug>(coc-range-select)

" Add `:Format` command to format current buffer.
command! -nargs=0 Format :call CocAction('format')

" Add `:Fold` command to fold current buffer.
command! -nargs=? Fold :call     CocAction('fold', <f-args>)

" Add `:OR` command for organize imports of the current buffer.
command! -nargs=0 OR   :call     CocAction('runCommand', 'editor.action.organizeImport')

" Add (Neo)Vim's native statusline support.
" NOTE: Please see `:h coc-status` for integrations with external plugins that
" provide custom statusline: lightline.vim, vim-airline.
set statusline^=%{coc#status()}%{get(b:,'coc_current_function','')}

" Mappings for CoCList
" Show all diagnostics.
nnoremap <silent><nowait> <space>a  :<C-u>CocList diagnostics<cr>
" Manage extensions.
nnoremap <silent><nowait> <space>e  :<C-u>CocList extensions<cr>
" Show commands.
nnoremap <silent><nowait> <space>c  :<C-u>CocList commands<cr>
" Find symbol of current document.
nnoremap <silent><nowait> <space>o  :<C-u>CocList outline<cr>
" Search workspace symbols.
nnoremap <silent><nowait> <space>s  :<C-u>CocList -I symbols<cr>
" Do default action for next item.
nnoremap <silent><nowait> <space>j  :<C-u>CocNext<CR>
" Do default action for previous item.
nnoremap <silent><nowait> <space>k  :<C-u>CocPrev<CR>
" Resume latest coc list.
nnoremap <silent><nowait> <space>p  :<C-u>CocListResume<CR>