rust-init.vim

" Rust development
let g:rustfmt_autosave = 1

" GENERAL
let g:one_allow_italics = 1

" 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

" 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> <c-space> coc#refresh()
else
  inoremap <silent><expr> <c-@> coc#refresh()
endif

" Make <CR> auto-select the first completion item and notify coc.nvim to
" format on enter, <cr> could be remapped by other vim plugin
inoremap <silent><expr> <cr> pumvisible() ? coc#_select_confirm()
                              \: "\<C-g>u\<CR>\<c-r>=coc#on_enter()\<CR>"

" 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>')
  elseif (coc#rpc#ready())
    call CocActionAsync('doHover')
  else
    execute '!' . &keywordprg . " " . expand('<cword>')
  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 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)

" 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 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>


let mapleader = "\<Space>"

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!
  autocmd VimEnter * PlugInstall
endif

call plug#begin('~/.config/nvim/plugged')
"File Search:
Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': './install --all' }
Plug 'junegunn/fzf.vim'

"File Browser:
Plug 'scrooloose/nerdtree'
Plug 'jistr/vim-nerdtree-tabs'
Plug 'mkitt/tabline.vim'
Plug 'ryanoasis/vim-devicons'

"Color:
Plug 'morhetz/gruvbox'

"Rust lang:
Plug 'rust-lang/rust.vim'
Plug 'neoclide/coc.nvim', {'branch': 'release'}

"Snippets:
Plug 'SirVer/ultisnips'
Plug 'editorconfig/editorconfig-vim'
Plug 'vim-airline/vim-airline'

"Git:
Plug 'tpope/vim-fugitive'
call plug#end()

" vim-fugitive config
if !exists('g:airline_symbols')
	let g:airline_symbols = {}
endif

	" unicode symbols
	let g:airline_left_sep = '»'
	let g:airline_left_sep = '▶'
	let g:airline_right_sep = '«'
	let g:airline_right_sep = '◀'
	let g:airline_symbols.linenr = '␊'
	let g:airline_symbols.linenr = '␤'
	let g:airline_symbols.linenr = '¶'
	let g:airline_symbols.branch = '⎇'
	let g:airline_symbols.paste = 'ρ'
	let g:airline_symbols.paste = 'Þ'
	let g:airline_symbols.paste = '∥'
	let g:airline_symbols.whitespace = 'Ξ'
	"
	" airline symbols
	let g:airline_left_sep = ''
	let g:airline_left_alt_sep = ''
	let g:airline_right_sep = ''
	let g:airline_right_alt_sep = ''
	let g:airline_symbols.branch = ''
	let g:airline_symbols.readonly = ''
	let g:airline_symbols.linenr = ''


"COPY/PASTE:
"-----------
"Increases the memory limit from 50 lines to 1000 lines
:set viminfo='100,<1000,s10,h

"NUMBERING:
"----------
:set number

"INDENTATION:
"------------
"Highlights code for multiple indents without reselecting
vnoremap < <gv
vnoremap > >gv

"COLOR:
"------
colorscheme gruvbox

"Cycle through completion entries with tab/shift+tab
inoremap <expr> <TAB> pumvisible() ? "\<c-n>" : "\<TAB>"
inoremap <expr> <s-tab> pumvisible() ? "\<c-p>" : "\<TAB>"
"Allow getting out of pop with Down/Up arrow keys
inoremap <expr> <down> pumvisible() ? "\<C-E>" : "\<down>"
inoremap <expr> <up> pumvisible() ? "\<C-E>" : "\<up>"

"SNIPPETS:
"---------
"Change default expand since TAB is used to cycle options
let g:UltiSnipsExpandTrigger="<c-j>"
let g:UltiSnipsJumpForwardTrigger="<c-j>"
let g:UltiSnipsJumpBackwardTrigger="<c-k>"

"FILE SEARCH:
"------------
"allows FZF to open by pressing CTRL-F
map <C-p> :FZF<CR>
"allow FZF to search hidden 'dot' files
let $FZF_DEFAULT_COMMAND = "find -L"

"FILE BROWSER:
"-------------
"allows NERDTree to open/close by typing 'n' then 't'
map <C-n> :NERDTreeToggle<CR>
"Start NERDtree when dir is selected (e.g. "vim .") and start NERDTreeTabs
let g:nerdtree_tabs_open_on_console_startup=2
"Add a close button in the upper right for tabs
let g:tablineclosebutton=1
"Automatically find and select currently opened file in NERDTree
let g:nerdtree_tabs_autofind=1
"Add folder icon to directories
let g:WebDevIconsUnicodeDecorateFolderNodes = 1
let g:DevIconsEnableFoldersOpenClose = 1
"Hide expand/collapse arrows
let g:NERDTreeDirArrowExpandable = "\u00a0"
let g:NERDTreeDirArrowCollapsible = "\u00a0"
let g:WebDevIconsNerdTreeBeforeGlyphPadding = ""
highlight! link NERDTreeFlags NERDTreeDir

"SHORTCUTS:
"----------
"Open file at same line last closed
if has("autocmd")
  au BufReadPost * if line("'\"") > 0 && line("'\"") <= line("$")
  \| exe "normal! g'\"" | endif
endif

"SOURCING:
"---------
"Automatically reloads neovim configuration file on write (w)
autocmd! bufwritepost init.vim source %

"MOUSE:
"------
"Allow using mouse helpful for switching/resizing windows
set mouse+=a
if &term =~ '^screen'
  " tmux knows the extended mouse mode
  set ttymouse=xterm2
endif

"TEXT SEARCH:
"------------
"Makes Search Case Insensitive
set ignorecase

"SWAP:
"-----
set dir=~/.local/share/nvim/swap/

"GIT (FUGITIVE):
"---------------
map fgb :Gblame<CR>
map fgs :Gstatus<CR>
map fgl :Glog<CR>
map fgd :Gdiff<CR>
map fgc :Gcommit<CR>
map fga :Git add %:p<CR>

"SYNTAX HIGHLIGHTING:
"--------------------
syntax enable
filetype plugin indent on

"HIGHLIGHTING:
"-------------
" <Ctrl-l> redraws the screen and removes any search highlighting.
nnoremap <silent> <C-l> :nohl<CR><C-l>
" Highlight the current line the cursor is on
set cursorline

" Quick-save
nmap <leader>w :w<CR>

" Verbose
set list
set listchars=nbsp:¬,extends:»,precedes:«,trail:•
" Ignore node_modules and images from search results
set wildignore+=**/node_modules/**,**/dist/**,**_site/**,*.swp,*.png,*.jpg,*.gif,*.webp,*.jpeg,*.map