let plug_install = 0
let autoload_plug_path = stdpath('config') . '/autoload/plug.vim'

if !filereadable(autoload_plug_path)
    silent exe '!curl -fL --create-dirs -o ' . autoload_plug_path .
     \ ' https://raw.github.com/junegunn/vim-plug/master/plug.vim'
    execute 'source ' . fnameescape(autoload_plug_path)
    let plug_install = 1
endif
unlet autoload_plug_path

call plug#begin('~/.config/nvim/plugins')

" Code development helpers {{{
Plug 'neovim/nvim-lspconfig'
Plug 'SirVer/ultisnips' | Plug 'honza/vim-snippets'
Plug 'wellle/context.vim'
Plug 'dbeniamine/cheat.sh-vim'
" }}}

" Files switch, jump and grep-like tools {{{
Plug 'preservim/nerdtree' | Plug 'Xuyuanp/nerdtree-git-plugin'
Plug 'junegunn/fzf.vim'
Plug 'liuchengxu/vista.vim'
Plug 'inside/vim-search-pulse'
Plug 'mhinz/vim-startify'
" }}}

" Git integration {{{
Plug 'mhinz/vim-signify' " Mark edited lines - faster gitgutter
" }}}

" Colorschemes {{{
Plug 'jaredgorski/spacecamp'
Plug 'vim-airline/vim-airline' | Plug 'vim-airline/vim-airline-themes'
" }}}

" Other plugins (external tools, etc) {{{
Plug 'junegunn/goyo.vim'
Plug 'jez/vim-superman' "vman application
Plug 'glacambre/firenvim'
" }}}

call plug#end()

if plug_install
    PlugInstall --sync
endif
unlet plug_install

set number
set clipboard+=unnamedplus

set noshowmode
set laststatus=2

set background=dark
colorscheme spacecamp
highlight MatchParen ctermfg=yellow ctermbg=none cterm=NONE
set listchars=tab:▸\ ,trail:¬
set list
hi clear SpellBad
hi SpellBad cterm=underline


set tabstop=4
set shiftwidth=4
set softtabstop=4
set expandtab

" Ctags {{{
if isdirectory($HOME . '/.vim/tags') == 0
	:silent !mkdir -p ~/.vim/tags > /dev/null 2>&1
endif
let g:gutentags_cache_dir='~/.vim/tags'
"let g:gutentags_ctags_extra_args=['--fields=+l']

let mapleader = "\\"

inoremap jj <ESC>
inoremap jk <ESC>
inoremap :w<CR> <Esc>:w<CR>

nnoremap <leader>2 <esc>:set tabstop=2 softtabstop=2 shiftwidth=2<cr>
nnoremap <leader>4 <esc>:set tabstop=4 softtabstop=4 shiftwidth=4<cr>
nnoremap <leader>8 <esc>:set tabstop=8 softtabstop=8 shiftwidth=8<cr>

nnoremap <leader><space> :nohlsearch<cr>

let g:UltiSnipsExpandTrigger="<c-s>"
let g:UltiSnipsJumpForwardTrigger="<c-n>"
let g:UltiSnipsJumpBackwardTrigger="<c-p>"

" TextEdit might fail if hidden is not set.
set hidden

" 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

" Always show the signcolumn, otherwise it would shift the text each time
" diagnostics appear/become resolved.
if has("patch-8.1.1564")
  " Recently vim can merge signcolumn and number column into one
  set signcolumn=number
else
  set signcolumn=yes
endif

set colorcolumn=80

" yoink configuration
"nmap <leader>yp <plug>(YoinkPostPasteSwapBack)
"nmap <leader>yn <plug>(YoinkPostPasteSwapForward)
"nmap p <plug>(YoinkPaste_p)
"nmap P <plug>(YoinkPaste_P)

" Mapping to NERDTree
nnoremap <leader>t :NERDTreeToggle<CR>
let NERDTreeIgnore=['\.vim$', '\~$', '\.pyc$']

nnoremap <leader>ff :FZF!<CR>
nnoremap <leader>fl :Lines!<CR>
nnoremap <leader>fb :Buffers<CR>
inoremap <leader>fs <ESC>:Snippets!<CR>
nnoremap <leader>fa :Rg! <C-R><C-W><CR>

" Disable context.vim on json files
let g:context_filetype_blacklist = ["json"]

match Error /\s\+$\|DU\cPA/

function! FindAlternate()
	let l:ext = 'h'
	let l:curr_ext = expand('%:e')
	if (l:curr_ext == 'c')
		let l:ext = 'h'
	elseif (l:curr_ext == 'cpp')
		let l:ext = 'h'
	elseif (l:curr_ext == 'h')
		let l:ext = 'c'
	elseif (l:curr_ext == 'hpp')
		let l:ext = 'cpp'
	endif
	let l:file = expand('%:t:r') . '.' . l:ext
	:exec 'find ' . l:file
endfunction

nnoremap <F6> :call FindAlternate()<CR>

setglobal virtualedit=block
setglobal shiftround

let g:vim_search_pulse_mode = 'pattern'
let g:vim_search_pulse_duration = 400

let g:airline_theme = 'minimalist'
let g:airline_powerline_fonts = 1
let g:airline_stl_path_style = 'short'
let g:airline_highlighting_cache = 1

let g:startify_custom_header = ''

" Completion configuration for native neovim + nvim-lspconfig
lua << EOF
local lspconfig = require'lspconfig'
lspconfig.ccls.setup {
  init_options = {
    compilationDatabaseDirectory = ".";
    index = {
      threads = 0;
    };
    clang = {
      excludeArgs = { "-frounding-math"} ;
    };
  }
}
EOF

lua << EOF
require'lspconfig'.pyls.setup{}
EOF

lua << EOF
require'lspconfig'.cmake.setup{}
EOF

lua << EOF
require'lspconfig'.rls.setup {
  settings = {
    rust = {
      unstable_features = true,
      build_on_save = false,
      all_features = true,
    },
  },
}
EOF

lua << EOF
local nvim_lsp = require('lspconfig')

-- Use an on_attach function to only map the following keys 
-- after the language server attaches to the current buffer
local on_attach = function(client, bufnr)
  local function buf_set_keymap(...) vim.api.nvim_buf_set_keymap(bufnr, ...) end
  local function buf_set_option(...) vim.api.nvim_buf_set_option(bufnr, ...) end

  --Enable completion triggered by <c-x><c-o>
  buf_set_option('omnifunc', 'v:lua.vim.lsp.omnifunc')

  -- Mappings.
  local opts = { noremap=true, silent=true }

  -- See `:help vim.lsp.*` for documentation on any of the below functions
  buf_set_keymap('n', 'gD', '<Cmd>lua vim.lsp.buf.declaration()<CR>', opts)
  buf_set_keymap('n', 'gd', '<Cmd>lua vim.lsp.buf.definition()<CR>', opts)
  buf_set_keymap('n', 'K', '<Cmd>lua vim.lsp.buf.hover()<CR>', opts)
  buf_set_keymap('n', 'gi', '<cmd>lua vim.lsp.buf.implementation()<CR>', opts)
  buf_set_keymap('n', '<C-k>', '<cmd>lua vim.lsp.buf.signature_help()<CR>', opts)
  buf_set_keymap('n', '<space>wa', '<cmd>lua vim.lsp.buf.add_workspace_folder()<CR>', opts)
  buf_set_keymap('n', '<space>wr', '<cmd>lua vim.lsp.buf.remove_workspace_folder()<CR>', opts)
  buf_set_keymap('n', '<space>wl', '<cmd>lua print(vim.inspect(vim.lsp.buf.list_workspace_folders()))<CR>', opts)
  buf_set_keymap('n', '<space>D', '<cmd>lua vim.lsp.buf.type_definition()<CR>', opts)
  buf_set_keymap('n', '<space>rn', '<cmd>lua vim.lsp.buf.rename()<CR>', opts)
  buf_set_keymap('n', '<space>ca', '<cmd>lua vim.lsp.buf.code_action()<CR>', opts)
  buf_set_keymap('n', 'gr', '<cmd>lua vim.lsp.buf.references()<CR>', opts)
  buf_set_keymap('n', '<space>e', '<cmd>lua vim.lsp.diagnostic.show_line_diagnostics()<CR>', opts)
  buf_set_keymap('n', '[d', '<cmd>lua vim.lsp.diagnostic.goto_prev()<CR>', opts)
  buf_set_keymap('n', ']d', '<cmd>lua vim.lsp.diagnostic.goto_next()<CR>', opts)
  buf_set_keymap('n', '<space>q', '<cmd>lua vim.lsp.diagnostic.set_loclist()<CR>', opts)
  buf_set_keymap("n", "<space>f", "<cmd>lua vim.lsp.buf.formatting()<CR>", opts)

end

-- Use a loop to conveniently call 'setup' on multiple servers and
-- map buffer local keybindings when the language server attaches
local servers = { "pyls", "rls", "cmake", 'ccls' }
for _, lsp in ipairs(servers) do
  nvim_lsp[lsp].setup { on_attach = on_attach }
end
EOF