" Do not use smart case in command line mode, extracted from https://vi.stackexchange.com/a/16511/15292.
augroup dynamic_smartcase
  autocmd!
  autocmd CmdLineEnter : set nosmartcase
  autocmd CmdLineLeave : set smartcase
augroup END

augroup term_settings
  autocmd!
  " Do not use number and relative number for terminal inside nvim
  autocmd TermOpen * setlocal norelativenumber nonumber
  " Go to insert mode by default to start typing command
  autocmd TermOpen * startinsert
augroup END

" More accurate syntax highlighting? (see `:h syn-sync`)
augroup accurate_syn_highlight
  autocmd!
  autocmd BufEnter * :syntax sync fromstart
augroup END

" Return to last edit position when opening a file
augroup resume_edit_position
  autocmd!
  autocmd BufReadPost *
        \ if line("'\"") > 1 && line("'\"") <= line("$") && &ft !~# 'commit' | execute "normal! g`\"zvzz" | endif
augroup END

" Display a message when the current file is not in utf-8 format.
" Note that we need to use `unsilent` command here because of this issue:
" https://github.com/vim/vim/issues/4379
augroup non_utf8_file_warn
  autocmd!
  " we can not use `lua vim.notify()`: it will error out E5107 parsing lua.
  autocmd BufRead * if &fileencoding != 'utf-8' | call v:lua.vim.notify('File not in UTF-8 format!', 'warn', {'title': 'nvim-config'}) | endif
augroup END

" Automatically reload the file if it is changed outside of Nvim, see
" https://unix.stackexchange.com/a/383044/221410. It seems that `checktime`
" command does not work in command line. We need to check if we are in command
" line before executing this command. See also
" https://vi.stackexchange.com/a/20397/15292.
augroup auto_read
  autocmd!
  autocmd FileChangedShellPost * call v:lua.vim.notify("File changed on disk. Buffer reloaded!", 'warn', {'title': 'nvim-config'})
  autocmd FocusGained,CursorHold * if getcmdwintype() == '' | checktime | endif
augroup END

augroup numbertoggle
  autocmd!
  autocmd BufEnter,FocusGained,InsertLeave,WinEnter * if &nu | set rnu   | endif
  autocmd BufLeave,FocusLost,InsertEnter,WinLeave   * if &nu | set nornu | endif
augroup END

" Define or override some highlight groups
augroup custom_highlight
  autocmd!
  autocmd ColorScheme * call s:custom_highlight()
augroup END

function! s:custom_highlight() abort
  " For yank highlight
  highlight YankColor ctermfg=59 ctermbg=41 guifg=#34495E guibg=#2ECC71

  " For cursor colors
  highlight Cursor cterm=bold gui=bold guibg=#00c918 guifg=black
  highlight Cursor2 guifg=red guibg=red

  " For floating windows border highlight
  highlight FloatBorder guifg=LightGreen guibg=NONE

  " highlight for matching parentheses
  highlight MatchParen cterm=bold,reverse,underline gui=bold,reverse,underline
endfunction

" highlight yanked region, see `:h lua-highlight`
augroup highlight_yank
  autocmd!
  au TextYankPost * silent! lua vim.highlight.on_yank{higroup="YankColor", timeout=300, on_visual=false}
augroup END

augroup auto_close_win
  autocmd!
  autocmd BufEnter * call s:quit_current_win()
augroup END

" Quit Nvim if we have only one window, and its filetype match our pattern.
function! s:quit_current_win() abort
  let quit_filetypes = ['qf', 'vista']
  let buftype = getbufvar(bufnr(), '&filetype')
  if winnr('$') == 1 && index(quit_filetypes, buftype) != -1
    quit
  endif
endfunction

augroup git_repo_check
  autocmd!
  autocmd VimEnter,DirChanged * call utils#Inside_git_repo()
augroup END

" Auto-generate packer_compiled.lua file
augroup packer_auto_compile
  autocmd!
  autocmd BufWritePost */nvim/lua/plugins.lua source <afile> | PackerCompile
augroup END