init.vim

"""""" my config """""
""" general
set number "show line number
set tabstop=2 "tab size = 2
set shiftwidth=2 "auto indent size = 2
set nowrap
set nocompatible

""" terminal
autocmd TermOpen * startinsert
command! -nargs=* T split | wincmd j | resize 20 | terminal <args>
tnoremap <Esc> <C-\><C-n>
nnoremap <C-t> :T<CR><C-l> 

"""key bind
" window moving
noremap <C-h> <C-w><C-h>
noremap <C-j> <C-w><C-j>
noremap <C-k> <C-w><C-k>
noremap <C-l> <C-w><C-l>

" window scroll
"augroup windowScr
"	autocmd!
"	au BufEnter * set scroll=3
"	au BufEnter * set nowrap
"augroup END

nnoremap <Up> <C-u>
nnoremap <Down> <C-d>
nnoremap <Right> 5zl
nnoremap <Left> 5zh
map <ScrollWheelUp> <C-u>
map <ScrollWheelDown> <C-d>

" Cursor movement
inoremap <C-h> <Left>
inoremap <C-l> <Right>
inoremap <C-k> <Up>
inoremap <C-j> <Down>

""""" Vim-plug """""
call plug#begin('~/.config/nvim/plugged')

Plug 'neoclide/coc.nvim', {'branch': 'release'}
" airline
Plug 'vim-airline/vim-airline'
Plug 'vim-airline/vim-airline-themes'
Plug 'ryanoasis/vim-devicons'
" Fern
Plug 'lambdalisue/fern.vim'
Plug 'lambdalisue/fern-git-status.vim'
Plug 'lambdalisue/nerdfont.vim'
Plug 'lambdalisue/fern-renderer-nerdfont.vim'
Plug 'lambdalisue/glyph-palette.vim'
" window resizer
Plug 'simeji/winresizer'
" color-schemes
Plug 'sheerun/vim-polyglot'
Plug 'joshdick/onedark.vim'
" auto-completion
Plug 'cohama/lexima.vim'
Plug 'alvan/vim-closetag'
" syntax for solidity
Plug 'tomlion/vim-solidity'
" haskell
Plug 'neovimhaskell/haskell-vim'

call plug#end()

"""""" colorschemes
syntax on
colorscheme onedark

" transparent background
highlight Normal ctermbg=none
highlight NonText ctermbg=none
highlight LineNr ctermbg=none
highlight Folded ctermbg=none
highlight EndOfBuffer ctermbg=none

"""""" window resizer config
" vertical size
let g:winresizer_vert_resize = 3

" horizontal size
let g:winresizer_horiz_resize = 1

"""""" Fern config
" toggle Fern with <C-n>
nnoremap <C-n> :Fern . -reveal=% -drawer -toggle -width=28<CR>
let g:fern#default_hidden=1

" show icon (fern-renderer-nerd)
let g:fern#renderer = 'nerdfont'

" color icon (glyph-palette)
augroup my-glyph-palette
  autocmd! *
  autocmd FileType fern call glyph_palette#apply()
  autocmd FileType nerdtree,startify call glyph_palette#apply()
augroup END

"""""" vim-airline config
" airline-themes
let g:airline_theme = 'onedark'
" show tab line
let g:airline#extensions#tabline#enabled = 1
" use powerline fonts
let g:airline_powerline_fonts = 1

"""""""vim-closetag config
" filenames like *.xml, *.html, *.xhtml, ...
" These are the file extensions where this plugin is enabled.
"
let g:closetag_filenames = '*.html,*.xhtml,*.phtml,*.js,*.vue'

" filenames like *.xml, *.xhtml, ...
" This will make the list of non-closing tags self-closing in the specified files.
"
let g:closetag_xhtml_filenames = '*.xhtml,*.jsx'

" filetypes like xml, html, xhtml, ...
" These are the file types where this plugin is enabled.
"
let g:closetag_filetypes = 'html,xhtml,phtml'

" filetypes like xml, xhtml, ...
" This will make the list of non-closing tags self-closing in the specified files.
"
let g:closetag_xhtml_filetypes = 'xhtml,jsx'

" integer value [0|1]
" This will make the list of non-closing tags case-sensitive (e.g. `<Link>` will be closed while `<link>` won't.)
"
let g:closetag_emptyTags_caseSensitive = 1

" dict
" Disables auto-close if not in a "valid" region (based on filetype)
"
let g:closetag_regions = {
    \ 'typescript.tsx': 'jsxRegion,tsxRegion',
    \ 'javascript.jsx': 'jsxRegion',
    \ 'typescriptreact': 'jsxRegion,tsxRegion',
    \ 'javascriptreact': 'jsxRegion',
    \ }

" Shortcut for closing tags, default is '>'
"
let g:closetag_shortcut = '>'

" Add > at current position without closing the current tag, default is ''
"
let g:closetag_close_shortcut = '<leader>>'

"""""""Coc-nvim config
" May need for Vim (not Neovim) since coc.nvim calculates byte offset by count
" utf-8 byte sequence
set encoding=utf-8
" Some servers have issues with backup files, see #649
set nobackup
set nowritebackup

" Having longer updatetime (default is 4000 ms = 4s) leads to noticeable
" delays and poor user experience
set updatetime=300

" Always show the signcolumn, otherwise it would shift the text each time
" diagnostics appear/become resolved
set signcolumn=yes

" 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 applying 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 applying 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> to 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','')}

" 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>