" Plugins
call plug#begin('~/.vim/plugged')

" Startify
Plug 'mhinz/vim-startify'

" Theme
Plug 'kyoz/purify', { 'rtp': 'vim' }

" Surround
Plug 'tpope/vim-surround'

" Lightline
Plug 'itchyny/lightline.vim'
Plug 'mengelbrecht/lightline-bufferline'

" Distraction-free
Plug 'junegunn/goyo.vim'

" Syntax
Plug 'sheerun/vim-polyglot'
Plug 'kevinoid/vim-jsonc'

" Color highlight
Plug 'ap/vim-css-color'

" Symlink
Plug 'aymericbeaumet/vim-symlink'

" Code completion
Plug 'neoclide/coc.nvim', { 'branch': 'release' }
Plug 'phpactor/phpactor', { 'for': 'php', 'branch': 'master', 'do': 'composer install --no-dev -o' }

" ALE
Plug 'dense-analysis/ale'

" Emmet
Plug 'mattn/emmet-vim'

" Debugging
Plug 'puremourning/vimspector'

" Git
Plug 'tpope/vim-fugitive', { 'tag': 'v3.2' }
Plug 'airblade/vim-gitgutter'

" Obsession
Plug 'tpope/vim-obsession'

" NERDTree
Plug 'preservim/nerdtree'
Plug 'Xuyuanp/nerdtree-git-plugin'

" VimDevIcons
Plug 'ryanoasis/vim-devicons'

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

" FZF
Plug 'junegunn/fzf'
Plug 'junegunn/fzf.vim'

" Bufonly
Plug 'schickling/vim-bufonly'

call plug#end()

syntax on

colorscheme purify

set nocompatible

" .exrc
set exrc
set secure

" Mouse
set mouse=a
if !has('nvim')
    set ttymouse=sgr
endif

" .vimrc
nnoremap <M-e> :e ~/.vimrc<CR>
nnoremap <M-r> :so ~/.vimrc<CR>

" Indentation
filetype plugin indent on
set expandtab
set tabstop=4
set shiftwidth=4
set autoindent
set smartindent

" Search
set hlsearch

" FZF
nnoremap <leader>fa :Ag<CR>
nnoremap <leader>fb :Buffers<CR>
nnoremap <leader>fc :Commands<CR>
nnoremap <leader>fg :GitFiles<CR>
nnoremap <leader>fhc :History:<CR>
nnoremap <leader>fhs :History/<CR>
nnoremap <leader>ff :Files<CR>
nnoremap <leader>fr :Rg<CR>
nnoremap <leader>fm :Maps<CR>

" Lightline
set laststatus=2
set cmdheight=2
set showtabline=2

let g:lightline = {
	\ 'colorscheme': 'wombat',
	\ 'active': {
	\   'left': [ [ 'mode', 'paste' ],
	\             [ 'cocstatus', 'readonly', 'filename', 'modified', 'gitbranch'] ]
	\ },
    \ 'tabline': {
    \   'left': [ ['buffers'] ]
    \ },
    \ 'component_expand': {
    \   'buffers': 'lightline#bufferline#buffers'
    \ },
	\ 'component_function': {
	\   'cocstatus': 'coc#status',
    \   'gitbranch': 'FugitiveHead'
	\ },
    \ 'component_type': {
    \   'buffers': 'tabsel'
    \ }
	\ }

let g:lightline#bufferline#show_number = 1
let g:lightline#bufferline#enable_devicons = 1
let g:lightline#bufferline#clickable = 1024
let g:lightline.component_raw = {'buffers': 1}

" Buffers
nnoremap <leader>b :ls<CR>:b<Space>
nnoremap <leader>cb :BufOnly<CR>

" Distraction-free
nnoremap <leader>g :Goyo<CR>

" Line numbers
set number
set relativenumber

" Undo
set undofile
set undodir=~/.vim/undo
set undolevels=1024

" Backup
set nobackup
set nowritebackup

" updatetime
set updatetime=450

" ALE
let g:ale_disable_lsp = 1

" Debugging
let g:vimspector_enable_mappings = 'HUMAN'
nmap <Leader>di <Plug>VimspectorBalloonEval
xmap <Leader>di <Plug>VimspectorBalloonEval
nmap <Leader>dr :VimspectorReset<CR>

" Tabs
nnoremap <C-Left> :tabprevious<CR>                                                                            
nnoremap <C-Right> :tabnext<CR>
nnoremap <C-j> :tabprevious<CR>                                                                            
nnoremap <C-k> :tabnext<CR>

" Clipboard
vmap <Leader-C> "+y

" NERDTree
autocmd StdinReadPre * let s:std_in=1
"autocmd VimEnter * if argc() == 0 && !exists("s:std_in") | NERDTree | endif
autocmd bufenter * if (winnr("$") == 1 && exists("b:NERDTree") && b:NERDTree.isTabTree()) | q | endif

let g:NERTreeChDirMode = 2

map <C-n> :NERDTreeToggle<CR>
nnoremap <C-m> :NERDTreeFind<CR>
 
" Code completion
set hidden
set shortmess+=c
set signcolumn=yes

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

if has('nvim')
  inoremap <silent><expr> <c-space> coc#refresh()
else
  inoremap <silent><expr> <c-@> coc#refresh()
endif

inoremap <silent><expr> <cr> pumvisible() ? coc#_select_confirm()
                              \: "\<C-g>u\<CR>\<c-r>=coc#on_enter()\<CR>"

nmap <silent> [g <Plug>(coc-diagnostic-prev)
nmap <silent> ]g <Plug>(coc-diagnostic-next)

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)

nnoremap <silent> K :call <SID>show_documentation()<CR>

function! s:show_documentation()
  if (index(['vim','help'], &filetype) >= 0)
    execute 'h '.expand('<cword>')
  elseif (coc#rpc#ready())
    call CocActionAsync('doHover')
  else
    execute '!' . &keywordprg . " " . expand('<cword>')
  endif
endfunction

autocmd CursorHold * silent call CocActionAsync('highlight')

nmap <leader>rn <Plug>(coc-rename)
xmap <leader>f  <Plug>(coc-format-selected)
nmap <leader>f  <Plug>(coc-format-selected)
xmap <leader>a  <Plug>(coc-codeaction-selected)
nmap <leader>a  <Plug>(coc-codeaction-selected)
nmap <leader>ac  <Plug>(coc-codeaction)
nmap <leader>qf  <Plug>(coc-fix-current)

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)

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

if has('nvim')
  vnoremap <nowait><expr> <C-f> coc#float#has_scroll() ? coc#float#nvim_scroll(1, 1) : "\<C-f>"
  vnoremap <nowait><expr> <C-b> coc#float#has_scroll() ? coc#float#nvim_scroll(0, 1) : "\<C-b>"
endif

nmap <silent> <C-s> <Plug>(coc-range-select)
xmap <silent> <C-s> <Plug>(coc-range-select)

command! -nargs=0 Format :call CocAction('format')
command! -nargs=? Fold :call     CocAction('fold', <f-args>)
command! -nargs=0 OR   :call     CocAction('runCommand', 'editor.action.organizeImport')

nnoremap <silent><nowait> <space>a  :<C-u>CocList diagnostics<cr>
nnoremap <silent><nowait> <space>e  :<C-u>CocList extensions<cr>
nnoremap <silent><nowait> <space>c  :<C-u>CocList commands<cr>
nnoremap <silent><nowait> <space>o  :<C-u>CocList outline<cr>
nnoremap <silent><nowait> <space>s  :<C-u>CocList -I symbols<cr>
nnoremap <silent><nowait> <space>j  :<C-u>CocNext<CR>
nnoremap <silent><nowait> <space>k  :<C-u>CocPrev<CR>
nnoremap <silent><nowait> <space>p  :<C-u>CocListResume<CR>

set statusline^=%{coc#status()}%{get(b:,'coc_current_function','')}

" 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)

" Use <leader>x for convert visual selected code to snippet
xmap <leader>x  <Plug>(coc-convert-snippet)

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>'