.vimrc

inoremap jk <ESC>
let mapleader=" "
set notimeout
set nocompatible 
set background=dark
set ignorecase
set encoding=UTF-8
set guifont=FantasqueSansMono\ Nerd\ Font\ Mono\ Regular\ 20
set number
set relativenumber
set cursorline
set showmatch

" To use fancy symbols wherever possible, change this setting from 0 to 1
" and use a font from https://github.com/ryanoasis/nerd-fonts in your terminal
" (if you aren't using one of those fonts, you will see funny characters here.
" Turst me, they look nice when using one of those fonts).
let fancy_symbols_enabled = 0

" Specify a directory for plugins
" - For Neovim: stdpath('data') . '/plugged'
" - Avoid using standard Vim directory names like 'plugin'
call plug#begin('~/.vim/plugged')

" Make sure you use single quotes

" install nerdtree
" Plug 'preservim/nerdtree', { 'on':  'NERDTreeToggle' }
Plug 'preservim/nerdtree'

" install simpyFold
Plug 'tmhedberg/SimpylFold'

" Use release branch (Recommend)
Plug 'neoclide/coc.nvim', {'branch': 'release'}

" powerline
" Plug 'Lokaltog/powerline', {'rtp': 'powerline/bindings/vim/'}
"
" Integrate git
Plug 'tpope/vim-fugitive'

" Theme
" Plug 'patstockwell/vim-monokai-tasty'
Plug 'morhetz/gruvbox'

" Airline
Plug 'vim-airline/vim-airline'
Plug 'vim-airline/vim-airline-themes'

" Nerdtree syntax
Plug 'tiagofumo/vim-nerdtree-syntax-highlight'
Plug 'ryanoasis/vim-devicons'

" Nerdtree commenter
Plug 'preservim/nerdcommenter'

" keybindings
Plug 'liuchengxu/vim-which-key'

" vim ipython
Plug 'jpalardy/vim-slime'

" surround
Plug 'tpope/vim-surround'

" vim-snppets
" Plug 'honza/vim-snippets'
" Plug 'SirVer/ultisnips'

" debug 
" Plug 'vim-vdebug/vdebug'

" start vim
Plug 'mhinz/vim-startify'

" jupyter
" Plug 'jupyter-vim/jupyter-vim'

" conda
" Plug 'cjrh/vim-conda'

" On-demand lazy load
" Plug 'liuchengxu/vim-which-key', { 'on': ['WhichKey', 'WhichKey!'] }
" autocmd User vim-which-key call which_key#register('<Space>', 'g:which_key_map')

" Initialize plugin system
call plug#end()


" key mapping
nnoremap <C-J> <C-W><C-J>
nnoremap <C-K> <C-W><C-K>
nnoremap <C-L> <C-W><C-L>
nnoremap <C-H> <C-W><C-H>
map <C-a> <ESC>^
imap <C-a> <ESC>I
map <C-e> <ESC>$
imap <C-e> <ESC>A
inoremap <M-f> <ESC><Space>Wi 
inoremap <M-b> <Esc>Bi
inoremap <M-d> <ESC>cW

func! s:SetBreakpoint()
    cal append('.', repeat(' ', strlen(matchstr(getline('.'), '^\s*'))) . 'import ipdb; ipdb.set_trace()')
endf

func! s:RemoveBreakpoint()
    exe 'silent! g/^\s*import\sipdb\;\?\n*\s*ipdb.set_trace()/d'
endf

func! s:ToggleBreakpoint()
    if getline('.')=~#'^\s*import\sipdb' | cal s:RemoveBreakpoint() | el | cal s:SetBreakpoint() | en
endf
nnoremap <F6> :call <SID>ToggleBreakpoint()<CR>

" insert from OS clipboard
set clipboard=unnamedplus
" inoremap <S-Insert> <ESC>"+pa

" Enable folding
set foldmethod=indent
set foldlevel=99

" Quickly insert an empty new line without entering insert mode
nnoremap <Leader>o o<Esc>
nnoremap <Leader>O O<Esc>

" NERDTree toggle
map <C-n> :NERDTreeToggle<CR>

" Enable folding with the spacebar
nnoremap <space> za

" docstring
let g:SimpylFold_docstring_preview=1


" Coc configuration------------------------------
let g:coc_global_extensions = [
  \ 'coc-snippets',
  \ 'coc-highlight',
  \ 'coc-lists',
  \ 'coc-pairs',
  \ 'coc-python', 
  \ 'coc-prettier', 
  \ ]
" coc configuration
" 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.
set signcolumn=yes

" 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.
inoremap <silent><expr> <c-space> coc#refresh()

" Use <cr> to confirm completion, `<C-g>u` means break undo chain at current
" position. Coc only does snippet and additional edit on confirm.
if has('patch8.1.1068')
  " Use `complete_info` if your (Neo)Vim version supports it.
  inoremap <expr> <cr> complete_info()["selected"] != "-1" ? "\<C-y>" : "\<C-g>u\<CR>"
else
  imap <expr> <cr> pumvisible() ? "\<C-y>" : "\<C-g>u\<CR>"
endif

" Use `[g` and `]g` to navigate diagnostics
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>')
  else
    call CocAction('doHover')
  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 line.
nmap <leader>ac  <Plug>(coc-codeaction)
" Apply AutoFix to problem on the current line.
nmap <leader>qf  <Plug>(coc-fix-current)

" Introduce function text object
" NOTE: Requires 'textDocument.documentSymbol' support from the language server.
xmap if <Plug>(coc-funcobj-i)
xmap af <Plug>(coc-funcobj-a)
omap if <Plug>(coc-funcobj-i)
omap af <Plug>(coc-funcobj-a)

" Use <TAB> for selections ranges.
" NOTE: Requires 'textDocument/selectionRange' support from the language server.
" coc-tsserver, coc-python are the examples of servers that support it.
nmap <silent> <TAB> <Plug>(coc-range-select)
xmap <silent> <TAB> <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 using CoCList:
" " Show all diagnostics.
" nnoremap <silent> <space>a  :<C-u>CocList diagnostics<cr>
" " Manage extensions.
" nnoremap <silent> <space>e  :<C-u>CocList extensions<cr>
" " Show commands.
" nnoremap <silent> <space>c  :<C-u>CocList commands<cr>
" " Find symbol of current document.
" nnoremap <silent> <space>o  :<C-u>CocList outline<cr>
" " Search workspace symbols.
" nnoremap <silent> <space>s  :<C-u>CocList -I symbols<cr>
" " Do default action for next item.
" nnoremap <silent> <space>j  :<C-u>CocNext<CR>
" " Do default action for previous item.
" nnoremap <silent> <space>k  :<C-u>CocPrev<CR>
" " Resume latest coc list.
" nnoremap <silent> <space>p  :<C-u>CocListResume<CR>

" ===================================================

" Setup theme-----------------------------------------------
let g:vim_monokai_tasty_italic = 1                    " allow italics, set this before the colorscheme
colorscheme gruvbox                                   " set the colorscheme
let g:gruvbox_contrast = 'hard'

" Optional themes for airline/lightline
" let g:airline_theme='gruvbox'                   " airline theme
" let g:lightline = { 'colorscheme': 'gruvbox' }  " lightline theme

" `What` will print out the syntax group that the cursor is currently above.
" from https://www.reddit.com/r/vim/comments/6z4aau/how_to_stop_vim_from_autohighlighting_italics_in/
" command! What echo synIDattr(synID(line('.'), col('.'), 1), 'name')

" Airline ------------------------------

let g:airline_powerline_fonts = 1
let g:airline_theme = 'gruvbox'
let g:airline#extensions#whitespace#enabled = 0
let g:airline#extensions#tabline#enabled = 1
let g:airline#extensions#tabline#fnamemod = ':t'
let g:airline#extensions#tabline#left_alt_sep = '|'
let g:airline#extensions#tabline#buffer_nr_show = 1

" Fancy Symbols!!

if fancy_symbols_enabled
    let g:webdevicons_enable = 1

    " custom airline symbols
    if !exists('g:airline_symbols')
       let g:airline_symbols = {}
    endif
    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 = '⭡'
else
    let g:webdevicons_enable = 0
endif

" Nerdtree ------------------------------
" loading the plugin
let g:webdevicons_enable = 1

" adding the flags to NERDTree
let g:webdevicons_enable_nerdtree = 1

" adding the custom source to unite
let g:webdevicons_enable_unite = 1

" adding the column to vimfiler
let g:webdevicons_enable_vimfiler = 1

" adding to vim-airline's tabline
let g:webdevicons_enable_airline_tabline = 1

" adding to vim-airline's statusline
let g:webdevicons_enable_airline_statusline = 1



" Highlight currently open buffer in NERDTree
" autocmd BufEnter * call SyncTree()

" let g:NERDTreeGitStatusWithFlags = 1
" "let g:WebDevIconsUnicodeDecorateFolderNodes = 1
" "let g:NERDTreeGitStatusNodeColorization = 1
" "let g:NERDTreeColorMapCustom = {
"     "\ "Staged"    : "#0ee375",
"     "\ "Modified"  : "#d9bf91",
"     "\ "Renamed"   : "#51C9FC",
"     "\ "Untracked" : "#FCE77C",
"     "\ "Unmerged"  : "#FC51E6",
"     "\ "Dirty"     : "#FFBD61",
"     "\ "Clean"     : "#87939A",
"     "\ "Ignored"   : "#808080"
"     "\ }


let g:NERDTreeIgnore = ['^node_modules$']

" vim-prettier
"let g:prettier#quickfix_enabled = 0
"let g:prettier#quickfix_auto_focus = 0
" prettier command for coc
command! -nargs=0 Prettier :CocCommand prettier.formatFile
" run prettier on save
"let g:prettier#autoformat = 0
"autocmd BufWritePre *.js,*.jsx,*.mjs,*.ts,*.tsx,*.css,*.less,*.scss,*.json,*.graphql,*.md,*.vue,*.yaml,*.html PrettierAsync

" sync open file with NERDTree
" Check if NERDTree is open or active
function! IsNERDTreeOpen()
  return exists("t:NERDTreeBufName") && (bufwinnr(t:NERDTreeBufName) != -1)
endfunction

" Call NERDTreeFind iff NERDTree is active, current window contains a modifiable
" file, and we're not in vimdiff
" function! SyncTree()
"   if &modifiable && IsNERDTreeOpen() && strlen(expand('%')) > 0 && !&diff
"     NERDTreeFind
"     wincmd p
"   endif
" endfunction

" Nerdtree commenter --------------------------------------
" Add spaces after comment delimiters by default
let g:NERDSpaceDelims = 1

" Use compact syntax for prettified multi-line comments
let g:NERDCompactSexyComs = 1

" Align line-wise comment delimiters flush left instead of following code indentation
let g:NERDDefaultAlign = 'left'

" Set a language to use its alternate delimiters by default
let g:NERDAltDelims_java = 1

" Add your own custom formats or override the defaults
let g:NERDCustomDelimiters = { 'c': { 'left': '/**','right': '*/' } }

" Allow commenting and inverting empty lines (useful when commenting a region)
let g:NERDCommentEmptyLines = 1

" Enable trimming of trailing whitespace when uncommenting
let g:NERDTrimTrailingWhitespace = 1

" Enable NERDCommenterToggle to check all selected lines is commented or not 
let g:NERDToggleCheckAllLines = 1

" Run python------------------------------
nnoremap <silent> <F5> :!python %<CR>

" vim which key-------------------------------------------
" By default timeoutlen is 1000 ms
set timeoutlen=500

let g:mapleader = "\<Space>"
let g:maplocalleader = ','
nnoremap <silent> <leader>      :<c-u>WhichKey '<Space>'<CR>
nnoremap <silent> <localleader> :<c-u>WhichKey  ','<CR>

" nnoremap <Leader>a<Tab> :echom "Hello, World"<cr>
" nnoremap <Leader>1 :echom "THis is one"<cr>
"
let g:which_key_map =  {}
"
" let g:which_key_map.a = {
"             \ 'name':"Test",
"             \ '<Tab>':"Hello world"
"             \}
"
" let g:which_key_map.1 = "One"

" `name` 是一个特殊字段，如果 dict 里面的元素也是一个 dict，那么表明一个 group，比如 `+file`, 就会高亮和显示 `+file` 。默认是 `+prefix`.

" =======================================================
" 基于已经存在的快捷键映射，直接使用一个字符串说明介绍信息即可
" =======================================================
" You can pass a descriptive text to an existing mapping.

let g:which_key_map.f = { 'name' : '+file' }

nnoremap <silent> <leader>fs :update<CR>
let g:which_key_map.f.s = 'save-file'

nnoremap <silent> <leader>fd :e $MYVIMRC<CR>
let g:which_key_map.f.d = 'open-vimrc'

nnoremap <silent> <leader>oq  :copen<CR>
nnoremap <silent> <leader>ol  :lopen<CR>
let g:which_key_map.o = {
      \ 'name' : '+open',
      \ 'q' : 'open-quickfix'    ,
      \ 'l' : 'open-locationlist',
      \ }

" =======================================================
" 不存在相关的快捷键映射，需要用一个 list：
" 第一个元素表明执行的操作，第二个是该操作的介绍
" =======================================================
" Provide commands(ex-command, <Plug>/<C-W>/<C-d> mapping, etc.) and descriptions for existing mappings
let g:which_key_map.b = {
      \ 'name' : '+buffer' ,
      \ '1' : ['b1'        , 'buffer 1']        ,
      \ '2' : ['b2'        , 'buffer 2']        ,
      \ 'd' : ['bd'        , 'delete-buffer']   ,
      \ 'f' : ['bfirst'    , 'first-buffer']    ,
      \ 'h' : ['Startify'  , 'home-buffer']     ,
      \ 'l' : ['blast'     , 'last-buffer']     ,
      \ 'n' : ['bnext'     , 'next-buffer']     ,
      \ 'p' : ['bprevious' , 'previous-buffer'] ,
      \ '?' : ['Buffers'   , 'fzf-buffer']      ,
      \ }


" let g:which_key_map.l = {
"       \ 'name' : '+lsp'                                            ,
"       \ 'f' : ['LanguageClient#textDocument_formatting()'     , 'formatting']       ,
"       \ 'h' : ['LanguageClient#textDocument_hover()'          , 'hover']            ,
"       \ 'r' : ['LanguageClient#textDocument_references()'     , 'references']       ,
"       \ 'R' : ['LanguageClient#textDocument_rename()'         , 'rename']           ,
"       \ 's' : ['LanguageClient#textDocument_documentSymbol()' , 'document-symbol']  ,
"       \ 'S' : ['LanguageClient#workspace_symbol()'            , 'workspace-symbol'] ,
"       \ 'g' : {
"         \ 'name': '+goto',
"         \ 'd' : ['LanguageClient#textDocument_definition()'     , 'definition']       ,
"         \ 't' : ['LanguageClient#textDocument_typeDefinition()' , 'type-definition']  ,
"         \ 'i' : ['LanguageClient#textDocument_implementation()'  , 'implementation']  ,
"         \ },
"       \ }

call which_key#register('<Space>', "g:which_key_map")
nnoremap <silent> <leader> :<c-u>WhichKey '<Space>'<CR>
vnoremap <silent> <leader> :<c-u>WhichKeyVisual '<Space>'<CR>

" vim-Slime------------------------------------------------
let g:slime_target = "tmux"
let g:slime_paste_file = "$HOME/.slime_paste"
let g:slime_default_config = {"socket_name": "default", "target_pane": "{right-of}"}
let g:slime_python_ipython =1

" vim-snippets---------------------------------------------
" Use <C-l> for trigger snippet expand.
imap <C-l> <Plug>(coc-snippets-expand)

" Use <C-j> for select text for visual placeholder of snippet.
vmap <C-j> <Plug>(coc-snippets-select)

" Use <C-j> for jump to next placeholder, it's default of coc.nvim
let g:coc_snippet_next = '<c-j>'

" Use <C-k> for jump to previous placeholder, it's default of coc.nvim
let g:coc_snippet_prev = '<c-k>'

" Use <C-j> for both expand and jump (make expand higher priority.)
imap <C-j> <Plug>(coc-snippets-expand-jump)

" inoremap <silent><expr> <TAB>
"       \ pumvisible() ? coc#_select_confirm() :
"       \ coc#expandableOrJumpable() ? "\<C-r>=coc#rpc#request('doKeymap', ['snippets-expand-jump',''])\<CR>" :
"       \ <SID>check_back_space() ? "\<TAB>" :
"       \ coc#refresh()
"
" function! s:check_back_space() abort
"   let col = col('.') - 1
"   return !col || getline('.')[col - 1]  =~# '\s'
" endfunction
"
" let g:coc_snippet_next = '<tab>'

" " vim-jupyter----------------------------------------------
" " Always use the same virtualenv for vim, regardless of what Python
" " environment is loaded in the shell from which vim is launched
" let g:vim_virtualenv_path = '/home/yichuan/anaconda3/envs/simple'
" if exists('g:vim_virtualenv_path')
"     pythonx import os; import vim
"     pythonx activate_this = os.path.join(vim.eval('g:vim_virtualenv_path'), 'bin/activate_this.py')
"     pythonx with open(activate_this) as f: exec(f.read(), {'__file__': activate_this})
" endif