set nocompatible              " be iMproved, required
" auto-install vim-plug                                                                                                                
if empty(glob('~/.config/nvim/autoload/plug.vim'))                                                                                    
  silent !curl -fLo ~/.config/nvim/autoload/plug.vim --create-dirs \                                                                  
      https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim                                                             
  autocmd VimEnter * PlugInstall                                                                                                      
endif                                                                                                                                 
call plug#begin('~/.config/nvim/plugged')               

Plug 'neoclide/coc.nvim', {'branch': 'release'}
" rust lang
Plug 'rust-lang/rust.vim'
" go
Plug 'fatih/vim-go', { 'do': ':GoUpdateBinaries' }
" linting
" Plug 'dense-analysis/ale'
"C++ Highlighting
Plug 'octol/vim-cpp-enhanced-highlight'
"GLSL
Plug 'tikhomirov/vim-glsl'
" latex
Plug 'lervag/vimtex'
Plug 'morhetz/gruvbox'

Plug 'psliwka/vim-smoothie'

Plug 'vim-airline/vim-airline'
Plug 'vim-airline/vim-airline-themes'

Plug 'edkolev/tmuxline.vim'

" :)
Plug 'jasonccox/vim-wayland-clipboard'
Plug 'lambdalisue/suda.vim'


call plug#end()

filetype plugin indent on    " required
" To ignore plugin indent changes, instead use:
"filetype plugin on
"
" Brief help
" :PluginList       - lists configured plugins
" :PluginInstall    - installs plugins; append `!` to update or just :PluginUpdate
" :PluginSearch foo - searches for foo; append `!` to refresh local cache
" :PluginClean      - confirms removal of unused plugins; append `!` to auto-approve removal
"
" see :h vundle for more details or wiki for FAQ
" Put your non-Plugin stuff after this line
"
colorscheme gruvbox

hi clear SignColumn

set textwidth=80

set clipboard+=unnamedplus
" " Copy to clipboard
vnoremap  <leader>y  "+y
nnoremap  <leader>Y  "+yg_
nnoremap  <leader>y  "+y
nnoremap  <leader>yy  "+yy

" " Paste from clipboard
nnoremap <leader>p "+p
nnoremap <leader>P "+P
vnoremap <leader>p "+p
vnoremap <leader>P "+P

"python with virtualenv support
py3 << EOF
import os
import sys
if 'VIRTUAL_ENV' in os.environ:
  project_base_dir = os.environ['VIRTUAL_ENV']
  activate_this = os.path.join(project_base_dir, 'bin/activate_this.py')
  execfile(activate_this, dict(__file__=activate_this))
EOF

" #####################################################################
" #####################################################################
" #####################################################################
" ########################## COC STUFF ################################
" #####################################################################
" #####################################################################
" #####################################################################

" Use tab for trigger completion with characters ahead and navigate.
" NOTE: There's always complete item selected by default, you may want to enable
" no select by `"suggest.noselect": true` in your configuration file.
" 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>
      \ coc#pum#visible() ? coc#pum#next(1) :
      \ CheckBackspace() ? "\<Tab>" :
      \ coc#refresh()
inoremap <expr><S-TAB> coc#pum#visible() ? coc#pum#prev(1) : "\<C-h>"

" Make <CR> to accept selected completion item or notify coc.nvim to format
" <C-g>u breaks current undo, please make your own choice.
inoremap <silent><expr> <CR> coc#pum#visible() ? coc#pum#confirm()
                              \: "\<C-g>u\<CR>\<c-r>=coc#on_enter()\<CR>"

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

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

function! ShowDocumentation()
  if CocAction('hasProvider', 'hover')
    call CocActionAsync('doHover')
  else
    call feedkeys('K', 'in')
  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)

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

" Remap keys for apply code actions at the cursor position.
nmap <leader>ac  <Plug>(coc-codeaction-cursor)
" Remap keys for apply code actions affect whole buffer.
nmap <leader>as  <Plug>(coc-codeaction-source)
" Apply the most preferred quickfix action to fix diagnostic on the current line.
nmap <leader>qf  <Plug>(coc-fix-current)

" Remap keys for apply refactor code actions.
nmap <silent> <leader>re <Plug>(coc-codeaction-refactor)
xmap <silent> <leader>r  <Plug>(coc-codeaction-refactor-selected)
nmap <silent> <leader>r  <Plug>(coc-codeaction-refactor-selected)

" Run the Code Lens action on the current line.
nmap <leader>cl  <Plug>(coc-codelens-action)

" 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)

" Remap <C-f> and <C-b> for scroll float windows/popups.
if has('nvim-0.4.0') || has('patch-8.2.0750')
  nnoremap <silent><nowait><expr> <C-f> coc#float#has_scroll() ? coc#float#scroll(1) : "\<C-f>"
  nnoremap <silent><nowait><expr> <C-b> coc#float#has_scroll() ? coc#float#scroll(0) : "\<C-b>"
  inoremap <silent><nowait><expr> <C-f> coc#float#has_scroll() ? "\<c-r>=coc#float#scroll(1)\<cr>" : "\<Right>"
  inoremap <silent><nowait><expr> <C-b> coc#float#has_scroll() ? "\<c-r>=coc#float#scroll(0)\<cr>" : "\<Left>"
  vnoremap <silent><nowait><expr> <C-f> coc#float#has_scroll() ? coc#float#scroll(1) : "\<C-f>"
  vnoremap <silent><nowait><expr> <C-b> coc#float#has_scroll() ? coc#float#scroll(0) : "\<C-b>"
endif

" 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 CocActionAsync('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     CocActionAsync('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','')}
let g:airline#extensions#coc#enabled = 1

" 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>
inoremap <silent><expr> <TAB>
      \ coc#pum#visible() ? coc#pum#next(1) :
      \ CheckBackspace() ? "\<Tab>" :
      \ coc#refresh()
inoremap <expr><S-TAB> coc#pum#visible() ? coc#pum#prev(1) : "\<C-h>"

" use <c-space>for trigger completion
inoremap <silent><expr> <c-space> coc#refresh()


" #####################################################################
" #####################################################################
" #####################################################################
" #####################################################################
" #####################################################################
" #####################################################################

set laststatus=2

map <C-h> :set hlsearch!<CR>

"nnoremap <C-Left> :tabprevious<CR>
"nnoremap <C-Right> :tabnext<CR>

nnoremap <C-l> :ls<CR>:b<space>

fun! TrimWhitespace()
    let l:save = winsaveview()
    keeppatterns %s/\s\+$//e
    call winrestview(l:save)
endfun

noremap <C-w> :call TrimWhitespace()<CR>

set hlsearch
set incsearch

set mouse=a

" regex by default
set magic
set smarttab

let g:enable_bold_font = 1


"------------Start Python PEP 8 stuff----------------
" Number of spaces that a pre-existing tab is equal to.
"au BufRead,BufNewFile *.go,*.html,*py,*pyw,*.c,*.h,*.js,*.tex,*.glsl,*.java,*.ts,*.tsx,*.c,*.cpp,*.h,*.hpp set tabstop=4

"spaces for indents
"au BufRead,BufNewFile *.go,*.html,*.py,*.pyw,*.js,*.tex,*.glsl,*.java,*.ts,*.tsx,*.c,*.cpp,*.h,*.hpp set shiftwidth=4
"au BufRead,BufNewFile *.go,*.html,*.py,*.pyw,*.js,*.tex,*.glsl,*.java,*.ts,*.tsx,*.c,*.cpp,*.h,*.hpp set expandtab
"au BufRead,BufNewFile *.go,*.html,*.py,*.js,*.tex,*.glsl,*.java,*.ts,*.tsx,*.c,*.cpp,*.h,*.hpp set softtabstop=4

au BufRead,BufNewFile * set tabstop=4
au BufRead,BufNewFile * set shiftwidth=4
au BufRead,BufNewFile * set expandtab
au BufRead,BufNewFile * set softtabstop=4

au BufRead,BufNewFile *.yaml set tabstop=2
au BufRead,BufNewFile *.yaml set shiftwidth=2
au BufRead,BufNewFile *.yaml set softtabstop=2

" Use the below highlight group when displaying bad whitespace is desired.
highlight BadWhitespace ctermbg=red guibg=red

" Display tabs at the beginning of a line in Python mode as bad.
au BufRead,BufNewFile *.py,*.pyw match BadWhitespace /^\t\+/
" Make trailing whitespace be flagged as bad.
au BufRead,BufNewFile *.py,*.pyw,*.c,*.h match BadWhitespace /\s\+$/

" Wrap text after a certain number of characters
au BufRead,BufNewFile *.py,*.pyw, set textwidth=100

" Use UNIX (\n) line endings.
au BufNewFile *.py,*.pyw,*.c,*.h set fileformat=unix

" Set the default file encoding to UTF-8:
set encoding=utf-8

" Number of spaces that a pre-existing tab is equal to.
au BufRead,BufNewFile *.css set tabstop=2

"spaces for indents
au BufRead,BufNewFile *.css set shiftwidth=2
au BufRead,BufNewFile *.css set expandtab
au BufRead,BufNewFile *.css set softtabstop=2

au BufRead,BufNewFile *.tex set syntax=context
set ai "auto indent
set si "smart indent
set nu

let g:python3_host_prog = '/usr/bin/python3' 
syntax on
highlight LineNr ctermfg=grey

set backspace=indent,eol,start

" Rust
let g:rustfmt_autosave = 1

let g:airline#extensions#tabline#enabled = 1
let g:airline_powerline_fonts = 1 

let g:go_fmt_command = "gofmt"

let g:smoothie_experimental_mappings = 1

let g:airline_theme='base16_gruvbox_dark_hard'


" ### Transparency ###
hi Normal guibg=none ctermbg=none
hi LineNr guibg=none ctermbg=none
hi Folded guibg=none ctermbg=none
hi NonText guibg=none ctermbg=none
hi SpecialKey guibg=none ctermbg=none
hi VertSplit guibg=none ctermbg=none
hi SignColumn guibg=none ctermbg=none
hi EndOfBuffer guibg=none ctermbg=none
" ####################