" Use 24-bit (true-color) mode in Vim/Neovim when outside tmux.
" If you're using tmux version 2.2 or later, you can remove the outermost $TMUX check and use tmux's 24-bit color support
" (see < http://sunaku.github.io/tmux-24bit-color.html#usage > for more information.)
if (has("nvim"))
  " For Neovim 0.1.3 and 0.1.4 < https://github.com/neovim/neovim/pull/2198 >
  let $NVIM_TUI_ENABLE_TRUE_COLOR=1
endif
  
" For Neovim > 0.1.5 and Vim > patch 7.4.1799 < https://github.com/vim/vim/commit/61be73bb0f965a895bfb064ea3e55476ac175162 >
" Based on Vim patch 7.4.1770 (`guicolors` option) < https://github.com/vim/vim/commit/8a633e3427b47286869aa4b96f2bfc1fe65b25cd >
" < https://github.com/neovim/neovim/wiki/Following-HEAD#20160511 >
if (has("termguicolors"))
  set termguicolors
endif

" Shortcuts
nnoremap <silent><nowait> <space>o :NERDTreeToggle<CR>
nnoremap <silent><nowait> <space>s  :TagbarToggle<CR>

" Remove Highlight
nnoremap <esc><esc> :let @/=""<cr>

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

" Required for operations modifying multiple buffers like rename.
" Used by coc.nvim
set hidden

" Set more space for displaying messages
" Used by coc.nvim
set cmdheight=2

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

" C-Space triggers autocompletion
inoremap <silent><expr> <c-space> coc#refresh()

" coc.nvim quick fix
nmap <leader>qf  <Plug>(coc-fix-current)

" Use tab for trigger completion with characters ahead and navigate.
" Used by coc.nvim
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 <cr> to confirm completion, `<C-g>u` means break undo chain at current
" position.
" Used by coc.nvim
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 K to show documentation in preview window.
" Used by coc.nvim
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

" CoC Status in LightLine
" Used by coc.nvim lightline.nvim
let g:lightline = {
        \ 'colorscheme': 'one',
        \ 'active': {
        \   'left': [ [ 'mode', 'paste' ],
        \             [ 'cocstatus', 'readonly', 'filename', 'modified' ] ]
        \ },
        \ 'component_function': {
        \   'cocstatus': 'coc#status'
        \ },
        \ }

" Use auocmd to force lightline update.
" Used by coc.nvim lightline.nvim 
autocmd User CocStatusChange,CocDiagnosticChange call lightline#update()


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

" TODO: Pick and Chose the ones I want
" Mappings for CoCList
nnoremap <silent><nowait> <space>a  :<C-u>CocList diagnostics<cr>
nnoremap <silent><nowait> <space>e  :<C-u>CocList extensions<cr>
nnoremap <silent><nowait> <space>c  :<C-u>CocList commands<cr>


" Plugged Plugins
call plug#begin(stdpath('data') . '/plugged')

" Blue Theme
Plug 'wadackel/vim-dogrun'

" Indent Detection
Plug 'tpope/vim-sleuth'

" One Dark Theme
Plug 'rakr/vim-one'

" Activity Tracking
" Plug 'ActivityWatch/aw-watcher-vim'

" Monokai Theme
Plug 'tomasr/molokai'

" Tender Theme
Plug 'jacoborus/tender.vim'

" Powerline Bar at bottom of screen
Plug 'itchyny/lightline.vim'

" Autocomplete
Plug 'neoclide/coc.nvim', {'branch': 'release'}

" Scope Tags
Plug 'majutsushi/tagbar'

" Rust Support
Plug 'rust-lang/rust.vim'

" TOML Support
Plug 'toml-lang/toml'

" Fuzzy Search 
Plug 'junegunn/fzf'

" Multiple Cursors
Plug 'terryma/vim-multiple-cursors'

" File Browser
Plug 'preservim/nerdtree'

" Auto-close brackets
Plug 'jiangmiao/auto-pairs'

" NerdTree Icons (Should be last according to docs)
Plug 'ryanoasis/vim-devicons'

call plug#end()

" Call RusftFmt on write to buffer
let g:rustfmt_autosave = 1

" Configuration
set noshowmode " Lightline requires we turn this off
colorscheme one
syntax enable


" Custom Shortcuts
nnoremap <silent><nowait> <space>o :NERDTreeToggle<CR>
nnoremap <silent><nowait> <space>s  :TagbarToggle<CR>