init.vim

scriptencoding utf-8
source ~/.config/nvim/plugins.vim

" ============================================================================ "
" ===                           EDITING OPTIONS                            === "
" ============================================================================ "

" Remap leader key to ,
let g:mapleader=','

" Disable line numbers
set nonumber

" Don't show last command
set noshowcmd

" Yank and paste with the system clipboard
set clipboard=unnamed

" Hides buffers instead of closing them
set hidden

" === TAB/Space settings === "
" Insert spaces when TAB is pressed.
set expandtab

" Change number of spaces that a <Tab> counts for during editing ops
set softtabstop=2

" Indentation amount for < and > commands.
set shiftwidth=2

" do not wrap long lines by default
set nowrap

" Don't highlight current cursor line
set nocursorline

" Disable line/column number in status line
" Shows up in preview window when airline is disabled if not
set noruler

" Only one line for command line
set cmdheight=1

" === Completion Settings === "

" Don't give completion messages like 'match 1 of 2'
" or 'The only match'
set shortmess+=c

" ============================================================================ "
" ===                           PLUGIN SETUP                               === "
" ============================================================================ "

" Wrap in try/catch to avoid errors on initial install before plugin is available
try
" === Denite setup ==="
" Use ripgrep for searching current directory for files
" By default, ripgrep will respect rules in .gitignore
"   --files: Print each file that would be searched (but don't search)
"   --glob:  Include or exclues files for searching that match the given glob
"            (aka ignore .git files)
"
call denite#custom#var('file/rec', 'command', ['rg', '--files', '--glob', '!.git'])

" Use ripgrep in place of "grep"
call denite#custom#var('grep', 'command', ['rg'])

" Custom options for ripgrep
"   --vimgrep:  Show results with every match on it's own line
"   --hidden:   Search hidden directories and files
"   --heading:  Show the file name above clusters of matches from each file
"   --S:        Search case insensitively if the pattern is all lowercase
call denite#custom#var('grep', 'default_opts', ['--hidden', '--vimgrep', '--heading', '-S'])

" Recommended defaults for ripgrep via Denite docs
call denite#custom#var('grep', 'recursive_opts', [])
call denite#custom#var('grep', 'pattern_opt', ['--regexp'])
call denite#custom#var('grep', 'separator', ['--'])
call denite#custom#var('grep', 'final_opts', [])

" Remove date from buffer list
call denite#custom#var('buffer', 'date_format', '')

" Custom options for Denite
"   split                       - Use floating window for Denite
"   start_filter                - Start filtering on default
"   auto_resize                 - Auto resize the Denite window height automatically.
"   source_names                - Use short long names if multiple sources
"   prompt                      - Customize denite prompt
"   highlight_matched_char      - Matched characters highlight
"   highlight_matched_range     - matched range highlight
"   highlight_window_background - Change background group in floating window
"   highlight_filter_background - Change background group in floating filter window
"   winrow                      - Set Denite filter window to top
"   vertical_preview            - Open the preview window vertically

let s:denite_options = {'default' : {
\ 'split': 'floating',
\ 'start_filter': 1,
\ 'auto_resize': 1,
\ 'source_names': 'short',
\ 'prompt': 'λ ',
\ 'highlight_matched_char': 'QuickFixLine',
\ 'highlight_matched_range': 'Visual',
\ 'highlight_window_background': 'Visual',
\ 'highlight_filter_background': 'DiffAdd',
\ 'winrow': 1,
\ 'vertical_preview': 1
\ }}

" Loop through denite options and enable them
function! s:profile(opts) abort
  for l:fname in keys(a:opts)
    for l:dopt in keys(a:opts[l:fname])
      call denite#custom#option(l:fname, l:dopt, a:opts[l:fname][l:dopt])
    endfor
  endfor
endfunction

call s:profile(s:denite_options)
catch
  echo 'Denite not installed. It should work after running :PlugInstall'
endtry

" === Coc.nvim === "
" use <tab> for trigger completion and navigate to next complete item
function! s:check_back_space() abort
  let col = col('.') - 1
  return !col || getline('.')[col - 1]  =~ '\s'
endfunction

inoremap <silent><expr> <TAB>
      \ pumvisible() ? "\<C-n>" :
      \ <SID>check_back_space() ? "\<TAB>" :
      \ coc#refresh()

"Close preview window when completion is done.
autocmd! CompleteDone * if pumvisible() == 0 | pclose | endif

" === NeoSnippet === "
" Map <C-k> as shortcut to activate snippet if available
imap <C-k> <Plug>(neosnippet_expand_or_jump)
smap <C-k> <Plug>(neosnippet_expand_or_jump)
xmap <C-k> <Plug>(neosnippet_expand_target)

" Load custom snippets from snippets folder
let g:neosnippet#snippets_directory='~/.config/nvim/snippets'

" Hide conceal markers
let g:neosnippet#enable_conceal_markers = 0

" === NERDTree === "
" Show hidden files/directories
let g:NERDTreeShowHidden = 1

" Remove bookmarks and help text from NERDTree
let g:NERDTreeMinimalUI = 1

" Custom icons for expandable/expanded directories
let g:NERDTreeDirArrowExpandable = '⬏'
let g:NERDTreeDirArrowCollapsible = '⬎'

" Hide certain files and directories from NERDTree
let g:NERDTreeIgnore = ['^\.DS_Store$', '^tags$', '\.git$[[dir]]', '\.idea$[[dir]]', '\.sass-cache$']

" Wrap in try/catch to avoid errors on initial install before plugin is available
try

" === Vim airline ==== "
" Enable extensions
let g:airline_extensions = ['branch', 'hunks', 'coc']

" Update section z to just have line number
let g:airline_section_z = airline#section#create(['linenr'])

" Do not draw separators for empty sections (only for the active window) >
let g:airline_skip_empty_sections = 1

" Smartly uniquify buffers names with similar filename, suppressing common parts of paths.
let g:airline#extensions#tabline#formatter = 'unique_tail'

" Custom setup that removes filetype/whitespace from default vim airline bar
let g:airline#extensions#default#layout = [['a', 'b', 'c'], ['x', 'z', 'warning', 'error']]

" Customize vim airline per filetype
" 'nerdtree'  - Hide nerdtree status line
" 'list'      - Only show file type plus current line number out of total
let g:airline_filetype_overrides = {
  \ 'nerdtree': [ get(g:, 'NERDTreeStatusline', ''), '' ],
  \ 'list': [ '%y', '%l/%L'],
  \ }

" Enable powerline fonts
let g:airline_powerline_fonts = 1

" Enable caching of syntax highlighting groups
let g:airline_highlighting_cache = 1

" Define custom airline symbols
if !exists('g:airline_symbols')
  let g:airline_symbols = {}
endif

" Don't show git changes to current file in airline
let g:airline#extensions#hunks#enabled=0

catch
  echo 'Airline not installed. It should work after running :PlugInstall'
endtry

" === echodoc === "
" Enable echodoc on startup
let g:echodoc#enable_at_startup = 1

" === vim-javascript === "
" Enable syntax highlighting for JSDoc
let g:javascript_plugin_jsdoc = 1

" === vim-jsx === "
" Highlight jsx syntax even in non .jsx files
let g:jsx_ext_required = 0

" === javascript-libraries-syntax === "
let g:used_javascript_libs = 'underscore,requirejs,chai,jquery'

" === Signify === "
let g:signify_sign_delete = '-'

" ============================================================================ "
" ===                                UI                                    === "
" ============================================================================ "

" Enable true color support
set termguicolors

" Vim airline theme
let g:airline_theme='space'

" Change vertical split character to be a space (essentially hide it)
set fillchars+=vert:.

" Set preview window to appear at bottom
set splitbelow

" Don't dispay mode in command line (airilne already shows it)
set noshowmode

" Set floating window to be slightly transparent
set winbl=10

" ============================================================================ "
" ===                      CUSTOM COLORSCHEME CHANGES                      === "
" ============================================================================ "
"
" Add custom highlights in method that is executed every time a colorscheme is sourced
" See https://gist.github.com/romainl/379904f91fa40533175dfaec4c833f2f for details
function! TrailingSpaceHighlights() abort
  " Hightlight trailing whitespace
  highlight Trail ctermbg=red guibg=red
  call matchadd('Trail', '\s\+$', 100)
endfunction

function! s:custom_jarvis_colors()
  " coc.nvim color changes
  hi link CocErrorSign WarningMsg
  hi link CocWarningSign Number
  hi link CocInfoSign Type

  " Make background transparent for many things
  hi Normal ctermbg=NONE guibg=NONE
  hi NonText ctermbg=NONE guibg=NONE
  hi LineNr ctermfg=NONE guibg=NONE
  hi SignColumn ctermfg=NONE guibg=NONE
  hi StatusLine guifg=#16252b guibg=#6699CC
  hi StatusLineNC guifg=#16252b guibg=#16252b

  " Try to hide vertical spit and end of buffer symbol
  hi VertSplit gui=NONE guifg=#17252c guibg=#17252c
  hi EndOfBuffer ctermbg=NONE ctermfg=NONE guibg=#17252c guifg=#17252c

  " Customize NERDTree directory
  hi NERDTreeCWD guifg=#99c794

  " Make background color transparent for git changes
  hi SignifySignAdd guibg=NONE
  hi SignifySignDelete guibg=NONE
  hi SignifySignChange guibg=NONE

  " Highlight git change signs
  hi SignifySignAdd guifg=#99c794
  hi SignifySignDelete guifg=#ec5f67
  hi SignifySignChange guifg=#c594c5
endfunction

autocmd! ColorScheme * call TrailingSpaceHighlights()
autocmd! ColorScheme OceanicNext call s:custom_jarvis_colors()

" Call method on window enter
augroup WindowManagement
  autocmd!
  autocmd WinEnter * call Handle_Win_Enter()
augroup END

" Change highlight group of preview window when open
function! Handle_Win_Enter()
  if &previewwindow
    setlocal winhighlight=Normal:MarkdownError
  endif
endfunction

" Editor theme
set background=dark
try
  colorscheme OceanicNext
catch
  colorscheme slate
endtry
" ============================================================================ "
" ===                             KEY MAPPINGS                             === "
" ============================================================================ "

" === Denite shorcuts === "
"   ;         - Browser currently open buffers
"   <leader>t - Browse list of files in current directory
"   <leader>g - Search current directory for occurences of given term and close window if no results
"   <leader>j - Search current directory for occurences of word under cursor
nmap ; :Denite buffer<CR>
nmap <leader>t :DeniteProjectDir file/rec<CR>
nnoremap <leader>g :<C-u>Denite grep:. -no-empty<CR>
nnoremap <leader>j :<C-u>DeniteCursorWord grep:.<CR>

" Define mappings while in 'filter' mode
"   <C-o>         - Switch to normal mode inside of search results
"   <Esc>         - Exit denite window in any mode
"   <CR>          - Open currently selected file in any mode
"   <C-t>         - Open currently selected file in a new tab
"   <C-v>         - Open currently selected file a vertical split
"   <C-h>         - Open currently selected file in a horizontal split
autocmd FileType denite-filter call s:denite_filter_my_settings()
function! s:denite_filter_my_settings() abort
  imap <silent><buffer> <C-o>
  \ <Plug>(denite_filter_update)
  inoremap <silent><buffer><expr> <Esc>
  \ denite#do_map('quit')
  nnoremap <silent><buffer><expr> <Esc>
  \ denite#do_map('quit')
  inoremap <silent><buffer><expr> <CR>
  \ denite#do_map('do_action')
  inoremap <silent><buffer><expr> <C-t>
  \ denite#do_map('do_action', 'tabopen')
  inoremap <silent><buffer><expr> <C-v>
  \ denite#do_map('do_action', 'vsplit')
  inoremap <silent><buffer><expr> <C-h>
  \ denite#do_map('do_action', 'split')
endfunction

" Define mappings while in denite window
"   <CR>        - Opens currently selected file
"   q or <Esc>  - Quit Denite window
"   d           - Delete currenly selected file
"   p           - Preview currently selected file
"   <C-o> or i  - Switch to insert mode inside of filter prompt
"   <C-t>       - Open currently selected file in a new tab
"   <C-v>       - Open currently selected file a vertical split
"   <C-h>       - Open currently selected file in a horizontal split
autocmd FileType denite call s:denite_my_settings()
function! s:denite_my_settings() abort
  nnoremap <silent><buffer><expr> <CR>
  \ denite#do_map('do_action')
  nnoremap <silent><buffer><expr> q
  \ denite#do_map('quit')
  nnoremap <silent><buffer><expr> <Esc>
  \ denite#do_map('quit')
  nnoremap <silent><buffer><expr> d
  \ denite#do_map('do_action', 'delete')
  nnoremap <silent><buffer><expr> p
  \ denite#do_map('do_action', 'preview')
  nnoremap <silent><buffer><expr> i
  \ denite#do_map('open_filter_buffer')
  nnoremap <silent><buffer><expr> <C-o>
  \ denite#do_map('open_filter_buffer')
  nnoremap <silent><buffer><expr> <C-t>
  \ denite#do_map('do_action', 'tabopen')
  nnoremap <silent><buffer><expr> <C-v>
  \ denite#do_map('do_action', 'vsplit')
  nnoremap <silent><buffer><expr> <C-h>
  \ denite#do_map('do_action', 'split')
endfunction

" === Nerdtree shorcuts === "
"  <leader>n - Toggle NERDTree on/off
"  <leader>f - Opens current file location in NERDTree
nmap <leader>n :NERDTreeToggle<CR>
nmap <leader>f :NERDTreeFind<CR>

"   <Space> - PageDown
"   -       - PageUp
noremap <Space> <PageDown>
noremap - <PageUp>

" Quick window switching
nmap <C-h> <C-w>h
nmap <C-j> <C-w>j
nmap <C-k> <C-w>k
nmap <C-l> <C-w>l

" === coc.nvim === "
"   <leader>dd    - Jump to definition of current symbol
"   <leader>dr    - Jump to references of current symbol
"   <leader>dj    - Jump to implementation of current symbol
"   <leader>ds    - Fuzzy search current project symbols
nmap <silent> <leader>dd <Plug>(coc-definition)
nmap <silent> <leader>dr <Plug>(coc-references)
nmap <silent> <leader>dj <Plug>(coc-implementation)
nnoremap <silent> <leader>ds :<C-u>CocList -I -N --top symbols<CR>

" === vim-better-whitespace === "
"   <leader>y - Automatically remove trailing whitespace
nmap <leader>y :StripWhitespace<CR>

" === Search shorcuts === "
"   <leader>h - Find and replace
"   <leader>/ - Claer highlighted search terms while preserving history
map <leader>h :%s///<left><left>
nmap <silent> <leader>/ :nohlsearch<CR>

" === Easy-motion shortcuts ==="
"   <leader>w - Easy-motion highlights first word letters bi-directionally
map <leader>w <Plug>(easymotion-bd-w)

" Allows you to save files you opened without write permissions via sudo
cmap w!! w !sudo tee %

" === vim-jsdoc shortcuts ==="
" Generate jsdoc for function under cursor
nmap <leader>z :JsDoc<CR>

" Delete current visual selection and dump in black hole buffer before pasting
" Used when you want to paste over something without it getting copied to
" Vim's default buffer
vnoremap <leader>p "_dP

" ============================================================================ "
" ===                                 MISC.                                === "
" ============================================================================ "

" Automaticaly close nvim if NERDTree is only thing left open
autocmd bufenter * if (winnr("$") == 1 && exists("b:NERDTree") && b:NERDTree.isTabTree()) | q | endif

" === Search === "
" ignore case when searching
set ignorecase

" if the search string has an upper case letter in it, the search will be case sensitive
set smartcase

" Automatically re-read file if a change was detected outside of vim
set autoread

" Enable line numbers
set number

" Enable spellcheck for markdown files
autocmd BufRead,BufNewFile *.md setlocal spell

" Set backups
if has('persistent_undo')
  set undofile
  set undolevels=3000
  set undoreload=10000
endif
set backupdir=~/.local/share/nvim/backup " Don't put backups in current dir
set backup
set noswapfile

" Reload icons after init source
if exists('g:loaded_webdevicons')
  call webdevicons#refresh()
endif