" this isn't the 90s anymore
set nocompatible

" Attempt to determine the type of a file based on its name and possibly its
" contents. Use this to allow intelligent auto-indenting for each filetype,
" and for plugins that are filetype specific.
if has('filetype')
  filetype indent plugin on
endif

" Enable syntax highlighting
if has('syntax')
  syntax on
endif

set encoding=utf-8

" Vim with default settings does not allow easy switching between multiple files
" in the same editor window. Users can use multiple split windows or multiple
" tab pages to edit multiple files, but it is still best to enable an option to
" allow easier switching between files.
"
" One such option is the 'hidden' option, which allows you to re-use the same
" window and switch from an unsaved buffer without saving it first. Also allows
" you to keep an undo history for multiple files when re-using the same window
" in this way. Note that using persistent undo also lets you undo in multiple
" files even in the same window, but is less efficient and is actually designed
" for keeping undo history after closing Vim entirely. Vim will complain if you
" try to quit without saving, and swap files will keep you safe if your computer
" crashes.
set hidden

" Better command-line completion
set wildmenu

" Show partial commands in the last line of the screen
set showcmd

" Highlight searches (use <leader>/ to temporarily turn off highlighting)
set hlsearch

" Use case insensitive search, except when using capital letters
set ignorecase
set smartcase

" Allow backspacing over autoindent, line breaks and start of insert action
set backspace=indent,eol,start

" When opening a new line and no filetype-specific indenting is enabled, keep
" the same indent as the line you're currently on. Useful for READMEs, etc.
set autoindent

" Stop certain movements from always going to the first character of a line.
" While this behaviour deviates from that of Vi, it does what most users
" coming from other editors would expect.
set nostartofline

" Display the cursor position on the last line of the screen or in the status
" line of a window
set ruler

" Always display the status line, even if only one window is displayed
set laststatus=2

" Instead of failing a command because of unsaved changes, instead raise a
" dialogue asking if you wish to save changed files.
set confirm

" Use visual bell instead of beeping when doing something wrong
set visualbell

" And reset the terminal code for the visual bell. If visualbell is set, and
" this line is also included, vim will neither flash nor beep. If visualbell
" is unset, this does nothing.
set t_vb=

" Enable use of the mouse for all modes
if has('mouse')
  set mouse=a
endif

" Display line numbers on the left
set number
set relativenumber

" Quickly time out on keycodes, but never time out on mappings
set notimeout ttimeout ttimeoutlen=200

" Use <F11> to toggle between 'paste' and 'nopaste'
set pastetoggle=<F11>
"
" Leave paste mode so I don't forget
autocmd InsertLeave * set nopaste

autocmd BufNewFile,BufRead *.asm setlocal ts=5 sts=5 sw=5

" Indentation settings for using 4 spaces instead of tabs.
" Do not change 'tabstop' from its default value of 8 with this setup.
set shiftwidth=4
set softtabstop=4
set expandtab

" Don't update the screen when executing macros
set lazyredraw

" Easier to reach than \
let mapleader=" "

" plugin config

nmap <silent> <C-k> <Plug>(ale_previous_wrap)
nmap <silent> <C-j> <Plug>(ale_next_wrap)

" fzf
nmap <leader>p :Files<cr>
nmap <leader>bb :Buffers<cr>

" lightline
let g:lightline = {
      \ 'colorscheme': 'Tomorrow_Night',
      \ }

let g:lightline.component_expand = {
      \  'linter_checking': 'lightline#ale#checking',
      \  'linter_infos': 'lightline#ale#infos',
      \  'linter_warnings': 'lightline#ale#warnings',
      \  'linter_errors': 'lightline#ale#errors',
      \  'linter_ok': 'lightline#ale#ok',
      \ }

let g:lightline.component_type = {
      \     'linter_checking': 'right',
      \     'linter_infos': 'right',
      \     'linter_warnings': 'warning',
      \     'linter_errors': 'error',
      \     'linter_ok': 'right',
      \ }
let g:lightline.active = {
            \ 'right': [ [ 'linter_checking', 'linter_errors', 'linter_warnings', 'linter_infos', 'linter_ok' ],
            \            [ 'lineinfo' ],
	    \            [ 'percent' ],
	    \            [ 'fileformat', 'fileencoding', 'filetype'] ] }

let g:lightline#ale#indicator_checking = "\uf110"
let g:lightline#ale#indicator_infos = "\uf129"
let g:lightline#ale#indicator_warnings = "\uf071"
let g:lightline#ale#indicator_errors = "\uf05e"
let g:lightline#ale#indicator_ok = "\uf00c"

" end plugin config

set formatoptions=ctqrn1

set showmatch                   " Show matching brackets.
set matchtime=5                 " Bracket blinking.

" start scrolling when we're 8 lines away from margins
set scrolloff=8
set sidescrolloff=15
set sidescroll=1

set noswapfile
set nobackup
set nowb

" Automatically insert the current comment leader after hitting 'o' or 'O' in Normal mode.
"set fo+=o
" Do not automatically insert a comment leader after an enter
"set fo-=r
" Do no auto-wrap text using textwidth (does not apply to comments)
"set fo-=t

set wildignore+=*/tmp/*,*.so,*.swp,*.zip,*/vendor/*,*/bin/*,*/node_modules/*

" quicker async update time
set updatetime=100

" taller vertical bar for vsplits
set fillchars+=vert:│

set termguicolors

set undodir=~/.vim/backups
set undofile

" When opening a file, always jump to the last cursor position 
autocmd BufReadPost *
\ if line("'\"") > 0 && line ("'\"") <= line("$") |
\ exe "normal g'\"" |
\ endif

" remove annoying help window
inoremap <F1> <nop>
nnoremap <F1> <nop>
vnoremap <F1> <nop>

" easy .vimrc editing
nnoremap <silent> <Leader>rs :source ~/.vimrc<CR>
nnoremap <silent> <Leader>rt :tabnew ~/.vimrc<CR>

" better window navigation
nnoremap <c-j> <c-w>j
nnoremap <c-k> <c-w>k
nnoremap <c-h> <c-w>h
nnoremap <c-l> <c-w>l

" quickfix
nnoremap <c-n> :cnext<CR>
nnoremap <c-b> :cprevious<CR>

" command line autocomplete
set wildchar=<Tab> wildmenu wildmode=full

" scroll through buffers
noremap <left> :bp<CR>
noremap <right> :bn<CR>

" show menu to switch buffers 
set wildcharm=<C-Z>
nnoremap <F10> :b <C-Z>

" unhighlight search results
noremap <silent><Leader>/ :nohls<CR>

" reselect visual block after indent/outdent 
vnoremap < <gv
vnoremap > >gv

" force saving files that require root permission
cmap w!! %!sudo tee > /dev/null %

" Close the current buffer and move to the previous one
" This replicates the idea of closing a tab
nmap <leader>bq :bp <BAR> bd #<CR>

colorscheme base16-default-dark

let g:ale_completion_enabled = 1

" Load all plugins now.
" Plugins need to be added to runtimepath before helptags can be generated.
" Load all of the helptags now, after plugins have been loaded.
" All messages and errors will be ignored.
packloadall | silent! helptags ALL

function! s:on_lsp_buffer_enabled() abort
    " setlocal omnifunc=lsp#complete
    setlocal signcolumn=yes
    if exists('+tagfunc') | setlocal tagfunc=lsp#tagfunc | endif
    nmap <buffer> gd <plug>(lsp-definition)
    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> gD <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> <leader>K <plug>(lsp-hover)
    nnoremap <buffer> <expr><c-f> lsp#scroll(+4)
    nnoremap <buffer> <expr><c-s> lsp#scroll(-4)

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

    " refer to doc to add more commands
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

if executable('solargraph')
    " gem install solargraph
    au User lsp_setup call lsp#register_server({
        \ 'name': 'solargraph',
        \ 'cmd': {server_info->[&shell, &shellcmdflag, 'solargraph stdio']},
        \ 'initialization_options': {"diagnostics": "true"},
        \ 'whitelist': ['ruby'],
        \ })
endif

function! SmartInsertCompletion() abort
" Use the default CTRL-N in completion menus
if pumvisible()
  return "\<C-n>"
endif

" Exit and re-enter insert mode, and use insert completion
return "\<C-c>a\<C-n>"
endfunction

inoremap <silent> <C-n> <C-R>=SmartInsertCompletion()<CR>

inoremap <expr> <Tab>   pumvisible() ? "\<C-n>" : "\<Tab>"
inoremap <expr> <S-Tab> pumvisible() ? "\<C-p>" : "\<S-Tab>"
inoremap <expr> <cr>    pumvisible() ? asyncomplete#close_popup() : "\<cr>"

let g:termdebug_popup = 0
let g:termdebug_wide = 163

vnoremap <leader>d :DB<cr>

set omnifunc=ale#completion#OmniFunc