init.vim

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => General
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
set mouse=a
" Sets how many lines of history VIM has to remember
set history=500
" Enable filetype plugins
filetype plugin on
filetype indent on
" Set to auto read when a file is changed from the outside
set autoread
au FocusGained,BufEnter * checktime

" Time out
set notimeout

" Display row number
set number

" Display cursor line
set cursorline

" With a map leader it's possible to do extra key combinations
" like <leader>w saves the current file
let mapleader = ","
" Fast saving
nmap <leader>w :w!<cr>
nmap <leader>x :q<cr>
nmap <leader>Q :q!<cr>

" :W sudo saves the file 
" (useful for handling the permission-denied error)
command! W execute 'w !sudo tee % > /dev/null' <bar> edit!

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => VIM user interface
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Set 7 lines to the cursor - when moving vertically using j/k
set so=7

" Turn on the Wild menu
set wildmenu

" Show Commond
set showcmd

" Ignore compiled files
set wildignore=*.o,*~,*.pyc
if has("win16") || has("win32")
    set wildignore+=.git\*,.hg\*,.svn\*
else
    set wildignore+=*/.git/*,*/.hg/*,*/.svn/*,*/.DS_Store
endif

"Always show current position
set ruler

" Height of the command bar
set cmdheight=1

" A buffer becomes hidden when it is abandoned
set hid

" Configure backspace so it acts as it should act
set backspace=eol,start,indent
set whichwrap+=<,>,h,l

" Ignore case when searching
set ignorecase

" When searching try to be smart about cases 
set smartcase

" Highlight search results
set hlsearch

" Makes search act like search in modern browsers
set incsearch 

" Don't redraw while executing macros (good performance config)
set lazyredraw 

" For regular expressions turn magic on
set magic

" Show matching brackets when text indicator is over them
set showmatch 
" How many tenths of a second to blink when matching brackets
set mat=2

" No annoying sound on errors
set noerrorbells
set novisualbell
set t_vb=
set tm=500

" Properly disable sound on errors on MacVim
if has("gui_macvim")
    autocmd GUIEnter * set vb t_vb=
endif
    
" Add a bit extra margin to the left
set foldcolumn=1

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => Colors and Fonts
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Enable syntax highlighting
syntax enable 


" Enable 256 colors palette in Gnome Terminal
if $COLORTERM == 'gnome-terminal'
    set t_Co=256
endif

" Set extra options when running in GUI mode
if has("gui_running")
    set guioptions-=T
    set guioptions-=e
    set t_Co=256
    set guitablabel=%M\ %t
endif

" Set utf8 as standard encoding and en_US as the standard language
set encoding=utf8

" Use Unix as the standard file type
set ffs=unix,dos,mac

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => Files, backups and undo
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Turn backup off, since most stuff is in SVN, git etc. anyway...
set nobackup
set nowb
set noswapfile
set nowritebackup

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => Text, tab and indent related
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Use spaces instead of tabs
set expandtab

" Be smart when using tabs ;)
set smarttab

" 1 tab == 4 spaces
set shiftwidth=4
set tabstop=4

" Linebreak on 500 characters
set lbr
set tw=500

set ai "Auto indent
set si "Smart indent
set wrap "Wrap lines

" Search
" Search
noremap <LEADER><CR> :nohlsearch<CR>

" Faster line navigation
noremap <silent> K 5k
noremap <silent> J 5j

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => Moving around, tabs, windows and buffers
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Map <Space> to / (search) and Ctrl-<Space> to ? (backwards search)
" map <space> /
" map <C-space> ?

map g] :bnext<cr>
map g[ :bprevious<cr>

" Resize splits with arrow keys
noremap <C-up> :res +5<CR>
noremap <C-down> :res -5<CR>
noremap <C-left> :vertical resize-5<CR>
noremap <C-right> :vertical resize+5<CR>

" Place the two screens up and down
noremap sh <C-w>t<C-w>K
" Place the two screens side by side
noremap sv <C-w>t<C-w>H

" Rotate screens
noremap srh <C-w>b<C-w>K
noremap srv <C-w>b<C-w>H

" Smart way to move between windows
map <leader>j <C-W>j
map <leader>k <C-W>k
map <leader>h <C-W>h
map <leader>l <C-W>l

" Tab management
" Create a new tab with tu
noremap tu :tabe<CR>
" Move around tabs with th and tl
noremap th :-tabnext<CR>
noremap tl :+tabnext<CR>
" Move the tabs with tmn and tmi
noremap tmh :-tabmove<CR>
noremap tml :+tabmove<CR>


" Return to last edit position when opening files (You want this!)
au BufReadPost * if line("'\"") > 1 && line("'\"") <= line("$") | exe "normal! g'\"" | endif

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => Editing mappings
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Disable the default s key
noremap s <nop>

" Delete trailing white space on save, useful for some filetypes ;)
fun! CleanExtraSpaces()
    let save_cursor = getpos(".")
    let old_query = getreg('/')
    silent! %s/\s\+$//e
    call setpos('.', save_cursor)
    call setreg('/', old_query)
endfun

if has("autocmd")
    autocmd BufWritePre *.txt,*.js,*.py,*.wiki,*.sh,*.coffee :call CleanExtraSpaces()
endif


"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => Spell checking
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Pressing ,ss will toggle and untoggle spell checking
map <leader>ss :setlocal spell!<cr>

" Shortcuts using <leader>
map <leader>sn ]s
map <leader>sp [s
map <leader>sa zg
map <leader>s? z=

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => Misc
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Remove the Windows ^M - when the encodings gets messed up
noremap <Leader>m mmHmt:%s/<C-V><cr>//ge<cr>'tzt'm

" Toggle paste mode on and off
map <leader>pp :setlocal paste!<cr>

" Opening a terminal window
noremap <LEADER>/ :set splitbelow<CR>:split<CR>:res -10<CR>:term<CR>

" Press space twice to jump to the next 'w' and edit it
noremap <LEADER><LEADER> <Esc>/<++><CR>:nohlsearch<CR>c4l

" Press ` to change case (instead of ~)
noremap ` ~

noremap <C-c> zz

" Auto change directory to current dir
autocmd BufEnter * silent! lcd %:p:h

" Call figlet
noremap tx :r !figlet


"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => Helper functions
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Compile function
noremap <leader>r :call CompileRunGcc()<cr>
func! CompileRunGcc()
	exec "w"
	if &filetype == 'c'
		exec "!g++ % -o %<"
		exec "!time ./%<"
	elseif &filetype == 'cpp'
		set splitbelow
		exec "!g++ -std=c++11 % -Wall -o %<"
		:sp
		:res -15
		:term ./%<
	elseif &filetype == 'java'
		exec "!javac %"
		exec "!time java %<"
	elseif &filetype == 'sh'
		:!time bash %
	elseif &filetype == 'python'
		set splitbelow
		:sp
		:term python3 %
	elseif &filetype == 'html'
		silent! exec "!".g:mkdp_browser." % &"
	elseif &filetype == 'markdown'
		exec "MarkdownPreview"
	elseif &filetype == 'tex'
		silent! exec "VimtexStop"
		silent! exec "VimtexCompile"
	elseif &filetype == 'dart'
		exec "CocCommand flutter.run -d ".g:flutter_default_device
		CocCommand flutter.dev.openDevLog
	elseif &filetype == 'javascript'
		set splitbelow
		:sp
		:term export DEBUG="INFO,ERROR,WARNING"; node --trace-warnings .
	elseif &filetype == 'go'
		set splitbelow
		:sp
		:term go run .
	endif
endfunc


" 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

" Theme
Plug 'connorholyday/vim-snazzy'

" Status Line
Plug 'itchyny/lightline.vim'
Plug 'edkolev/tmuxline.vim'

" Taglist
Plug 'liuchengxu/vista.vim'

" Auto Complete
Plug 'neoclide/coc.nvim', {'branch': 'release'}

" Snippets
Plug 'theniceboy/vim-snippets'

" Commenter
Plug 'preservim/nerdcommenter'

" File Explorer
Plug 'kevinhwang91/rnvimr', {'do': 'make sync'}
Plug 'kien/ctrlp.vim'

" Debugger
Plug 'puremourning/vimspector', {'do': './install_gadget.py --enable-c --enable-python'}

" Other Editor Enhancement
Plug 'tpope/vim-surround'

" Initialize plugin system
call plug#end()

" Theme
set t_Co=256
colorscheme snazzy
let g:SnazzyTransparent = 1

" Status Line Configure
set laststatus=2
let g:lightline = {'colorscheme': 'snazzy'}
set noshowmode

" ===
" === rnvimr
" ===
let g:rnvimr_ex_enable = 1
let g:rnvimr_pick_enable = 1
let g:rnvimr_draw_border = 0
" let g:rnvimr_bw_enable = 1
highlight link RnvimrNormal CursorLine
nnoremap <silent> R :RnvimrSync<CR>:RnvimrToggle<CR><C-\><C-n>:RnvimrResize 0<CR>
let g:rnvimr_action = {
            \ '<C-t>': 'NvimEdit tabedit',
            \ '<C-x>': 'NvimEdit split',
            \ '<C-v>': 'NvimEdit vsplit',
            \ 'gw': 'JumpNvimCwd',
            \ 'yw': 'EmitRangerCwd'
            \ }
let g:rnvimr_layout = { 'relative': 'editor',
            \ 'width': &columns,
            \ 'height': &lines,
            \ 'col': 0,
            \ 'row': 0,
            \ 'style': 'minimal' }
let g:rnvimr_presets = [{'width': 1.0, 'height': 1.0}]

" Coc 
let g:coc_global_extensions = [
    \'coc-marketplace',
    \'coc-json',
    \'coc-clangd',
    \'coc-python',
    \'coc-html',
    \'coc-css',
    \'coc-tsserver',
    \'coc-eslint',
    \'coc-xml',
    \'coc-yaml',
    \'coc-cmake',
    \'coc-vimlsp',
    \'coc-snippets',
    \'coc-git',
    \'coc-tasks',
    \'coc-actions',
    \'coc-diagnostic',
    \'coc-prettier',
    \'coc-syntax',
    \'coc-template',
    \'coc-translator',
    \'coc-tag',
    \'coc-highlight',
    \'coc-pairs',
    \'coc-explorer',
    \]

" 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 <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.
" <cr> could be remapped by other vim plugin, try `:verbose imap <CR>`.
if exists('*complete_info')
  inoremap <expr> <cr> complete_info()["selected"] != "-1" ? "\<C-y>" : "\<C-g>u\<CR>"
else
  inoremap <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 <space>f to show documentation in preview window.
nnoremap <silent> <space>f :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 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)

" Use CTRL-S for selections ranges.
" Requires 'textDocument/selectionRange' support of LS, ex: coc-tsserver
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 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>

" coc-python
noremap <silent> <leader>py :CocCommand python.setInterpreter<CR>

" coc-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>'

" coc-git
"
" coc-tasks
noremap <silent> <leader>ts :CocList tasks<CR>

" coc-explorer
nmap <space>e :CocCommand explorer<CR>
" coc-templates
noremap <silent> <space>tp :CocCommand template.templateTop<CR>


noremap <LEADER>v :Vista coc<CR>
noremap <c-t> :silent! Vista finder coc<CR>
let g:vista_icon_indent = ["╰─▸ ", "├─▸ "]
let g:vista_default_executive = 'ctags'
let g:vista_executive_for = {
  \ 'cpp': 'vim_lsp',
  \ 'php': 'vim_lsp',
  \ }
let g:vista_ctags_cmd = {
      \ 'haskell': 'hasktags -x -o - -c',
      \ }
let g:vista_fzf_preview = ['right:50%']
let g:vista#renderer#enable_icon = 1
let g:vista#renderer#icons = {
\   "function": "\uf794",
\   "variable": "\uf71b",
\  }

" 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

" Vimspector
let g:vimspector_enable_mappings = 'HUMAN'
function! s:read_template_into_buffer(template)
	" has to be a function to avoid the extra space fzf#run insers otherwise
	execute '0r ~/.config/nvim/sample_vimspector_json/'.a:template
endfunction
command! -bang -nargs=* LoadVimSpectorJsonTemplate call fzf#run({
			\   'source': 'ls -1 ~/.config/nvim/sample_vimspector_json',
			\   'down': 20,
			\   'sink': function('<sid>read_template_into_buffer')
			\ })
" noremap <leader>vs :tabe .vimspector.json<CR>:LoadVimSpectorJsonTemplate<CR>
sign define vimspectorBP text=☛ texthl=Normal
sign define vimspectorBPDisabled text=☞ texthl=Normal
sign define vimspectorPC text=🔶 texthl=SpellBad


" Necessary Commands to Execute
exec "nohlsearch"