.vimrc

if empty(glob('~/.vim/autoload/plug.vim'))
  silent !curl -fLo ~/.vim/autoload/plug.vim --create-dirs
    \ https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
  autocmd VimEnter * PlugInstall --sync | source $MYVIMRC
endif

call plug#begin('~/.vim/plugged')
Plug 'vim-airline/vim-airline'
Plug 'vim-airline/vim-airline-themes'
Plug 'tpope/vim-sensible'
Plug 'tomasiser/vim-code-dark'
Plug 'airblade/vim-gitgutter'
Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': './install --all' }
Plug 'junegunn/fzf.vim'
Plug 'mattn/emmet-vim'
Plug 'leafgarland/typescript-vim'
Plug 'peitalin/vim-jsx-typescript'
Plug 'neoclide/coc.nvim', {'branch': 'release'}
Plug 'scrooloose/nerdtree', { 'on': 'NERDTreeToggle' }
Plug 'mattn/emmet-vim'
Plug 'Yggdroot/indentLine'
Plug 'dense-analysis/ale'
Plug 'Xuyuanp/nerdtree-git-plugin'
Plug 'tiagofumo/vim-nerdtree-syntax-highlight'
Plug 'christoomey/vim-tmux-navigator'
Plug 'airblade/vim-gitgutter'
Plug 'ctrlpvim/ctrlp.vim'
Plug 'scrooloose/nerdcommenter'
Plug 'ryanoasis/vim-devicons'
Plug 'ericpruitt/tmux.vim', {'rtp': 'vim/'}
Plug 'skanehira/preview-markdown.vim'
call plug#end()

set encoding=UTF-8

" view settings
set background=dark
colorscheme codedark
set noerrorbells
set number
set showmode
set showcmd
set ruler
set relativenumber

" search settings
set incsearch
set hlsearch
set ignorecase
set smartcase
set splitright

" Search mappings: These will make it so that going to the next one in a
" search will center on the line it's found in.
nnoremap n nzzzv
nnoremap N Nzzzv

" formatting defaults
set autoindent
set expandtab
set tabstop=2
set shiftwidth=2
set smarttab

" have syntax highlighting in terminals which can display colours:
if has('syntax') && (&t_Co > 2)
  syntax on
endif

" enable filetype detection:
filetype on

" airline settings
let g:airline_theme = 'codedark'

highlight Normal ctermbg=none
highlight NonText ctermbg=none

" Nerdtree settings
nmap <C-n> :NERDTreeToggle<CR>

let NERDTreeShowHidden=1
" let NERDTreeQuitOnOpen = 1
let NERDTreeIgnore=['\.vim$', '\~$', '\.git$', '.DS_Store']
let NERDTreeMinimalUI = 1
let NERDTreeDirArrows = 1

autocmd StdinReadPre * let s:std_in=1
autocmd VimEnter * if argc() == 1 && isdirectory(argv()[0]) && !exists("s:std_in") | exe 'NERDTree' argv()[0] | wincmd p | ene | exe 'cd '.argv()[0] | endif

" fzf settings

" This is the default extra key bindings
let g:fzf_action = {
  \ 'ctrl-t': 'tab split',
  \ 'ctrl-x': 'split',
  \ 'ctrl-v': 'vsplit' }

" Default fzf layout
" - down / up / left / right
let g:fzf_layout = { 'down': '~20%' }

" Customize fzf colors to match your color scheme
let g:fzf_colors =
  \ { 'fg':    ['fg', 'Normal'],
  \ 'bg':      ['bg', 'Normal'],
  \ 'hl':      ['fg', 'Comment'],
  \ 'fg+':     ['fg', 'CursorLine', 'CursorColumn', 'Normal'],
  \ 'bg+':     ['bg', 'CursorLine', 'CursorColumn'],
  \ 'hl+':     ['fg', 'Statement'],
  \ 'info':    ['fg', 'PreProc'],
  \ 'border':  ['fg', 'Ignore'],
  \ 'prompt':  ['fg', 'Conditional'],
  \ 'pointer': ['fg', 'Exception'],
  \ 'marker':  ['fg', 'Keyword'],
  \ 'spinner': ['fg', 'Label'],
  \ 'header':  ['fg', 'Comment'] }

map ; :Files<CR>
map <C-t><up> :tabr<cr>
map <C-t><down> :tabl<cr>
map <C-t><left> :tabp<cr>
map <C-t><right> :tabn<cr>

" Override colors
hi Search ctermbg=LightYellow ctermfg=Black
hi IncSearch ctermbg=White ctermfg=Black

let &t_SI .= "\<Esc>[?2004h"
let &t_EI .= "\<Esc>[?2004l"
inoremap <special> <expr> <Esc>[200~ XTermPasteBegin()

function! XTermPasteBegin()
  set pastetoggle=<Esc>[201~
  set paste
  return ""
endfunction

" Allow saving of files as sudo when I forgot to start vim using sudo.
cmap w!! w !sudo tee > /dev/null %

" set 120 character line limit
highlight ColorColumn ctermbg=Gray
if exists('+colorcolumn')
 set colorcolumn=120
else
 au BufWinEnter * let w:m2=matchadd('ErrorMsg', '\%>120v.\+', -1)
endif

set wrap
"set textwidth=79
set formatoptions=qrn1

" Limit length of gitcommit messages
au FileType gitcommit set tw=72

let g:ctrlp_user_command = ['.git/', 'git --git-dir=%s/.git ls-files -oc --exclude-standard']

" 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

autocmd bufenter * if (winnr("$") == 1 && exists("b:NERDTree") && b:NERDTree.isTabTree()) | q | endif

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

" coc config
let g:coc_global_extensions = [
  \ 'coc-snippets',
  \ 'coc-pairs',
  \ 'coc-tsserver',
  \ 'coc-eslint', 
  \ 'coc-prettier', 
  \ 'coc-json', 
  \ ]
" from readme
" if hidden is not set, TextEdit might fail.
set hidden " Some servers have issues with backup files, see #649 set nobackup set nowritebackup " Better display for messages set cmdheight=2 " You will have bad experience for diagnostic messages when it's default 4000.
set updatetime=300

" don't give |ins-completion-menu| messages.
set shortmess+=c

" always show signcolumns
set signcolumn=yes

" Use tab for trigger completion with characters ahead and navigate.
" Use command ':verbose imap <tab>' to make sure tab is not mapped by other plugin.
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.
inoremap <expr> <cr> pumvisible() ? "\<C-y>" : "\<C-g>u\<CR>"
" Or use `complete_info` if your vim support it, like:
" inoremap <expr> <cr> complete_info()["selected"] != "-1" ? "\<C-y>" : "\<C-g>u\<CR>"

" Use `[g` and `]g` to navigate diagnostics
nmap <silent> [g <Plug>(coc-diagnostic-prev)
nmap <silent> ]g <Plug>(coc-diagnostic-next)

" Remap keys for gotos
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 symbol under cursor on CursorHold
autocmd CursorHold * silent call CocActionAsync('highlight')

" Remap for rename current word
nmap <F2> <Plug>(coc-rename)

" Remap for format selected region
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

" Remap for do codeAction of selected region, ex: `<leader>aap` for current paragraph
xmap <leader>a  <Plug>(coc-codeaction-selected)
nmap <leader>a  <Plug>(coc-codeaction-selected)

" Remap for do codeAction of current line
nmap <leader>ac  <Plug>(coc-codeaction)
" Fix autofix problem of current line
nmap <leader>qf  <Plug>(coc-fix-current)

" Create mappings for function text object, requires document symbols feature of languageserver.
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 <C-d> for select selections ranges, needs server support, like: coc-tsserver, coc-python
nmap <silent> <C-d> <Plug>(coc-range-select)
xmap <silent> <C-d> <Plug>(coc-range-select)

" Use `:Format` to format current buffer
command! -nargs=0 Format :call CocAction('format')

" Use `:Fold` to fold current buffer
command! -nargs=? Fold :call     CocAction('fold', <f-args>)

" use `:OR` for organize import of current buffer
command! -nargs=0 OR   :call     CocAction('runCommand', 'editor.action.organizeImport')

" Add status line support, for integration with other plugin, checkout `:h coc-status`
set statusline^=%{coc#status()}%{get(b:,'coc_current_function','')}

" 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>

let g:preview_markdown_parser = 'glow'
let g:preview_markdown_vertical = 1
let g:preview_markdown_auto_update = 1
nmap <C-m> :PreviewMarkdown<CR>