local user_at_host = vim.uv.os_get_passwd().username .. "@" .. vim.uv.os_gethostname()

-- insert user@host into statusline if running in ssh session
if vim.env.SSH_CONNECTION ~= nil or vim.env.SSH_TTY ~= nil then
	local ssh_status = "[" .. user_at_host .. "] "
	vim.o.statusline = vim.o.statusline:gsub("%%f", ssh_status .. "%%f", 1) -- before filename
end

-- insert user@host into titlestring
-- builtin titlestring must be reconstructed
function _G.title_flags()
	local f = (vim.bo.readonly and "=" or "") .. (vim.bo.modified and "+" or "")
	if not vim.bo.modifiable then f = f .. "-" end
	return f ~= "" and (" " .. f) or ""
end

vim.o.titlestring = '%t%{v:lua.title_flags()} (' .. user_at_host .. ' %{expand("%:p:~:h")}%a) - Nvim'

--
vim.cmd [[
	"" Extra functionality

	"" Functions for changing the terminal emulator's class name to 'Vim'
	"function GetTermPID(temu)
	"	let pinfo = ['', getpid(), '']
	"	while !(pinfo[2] =~ a:temu || pinfo[1] == '0')
	"		let pinfo = split(system('ps h -o pid,ppid,command= -p' . pinfo[1]))
	"	endwhile
	"	return pinfo[0]
	"endfunction

	"function SetTermClassName(termpid, name)
	"	" Command chaining in xdotool doesn't work here for some reason
	"	silent exec "!xdotool set_window --class " . a:name . " $(xdotool search --pid " . a:termpid . ")"
	"endfunction

	"" Behaviors exclusive to either a tty or a graphical terminal emulator
	"if empty($DISPLAY)
	"	" Clear the tty screen after exiting vim
	"	autocmd VimLeave * :clear
	"else
	"	" Highlight current line
	"	set cursorline
	"	" Change window title
	"	autocmd BufEnter * :set title
	"	let &titleold="st"
	"	" Change class name
	"	let temu = "st"
	"	let temupid = GetTermPID(temu)
	"	if (temupid != 1)
	"		autocmd VimEnter * call SetTermClassName(temupid, "Vim")
	"		autocmd VimLeave * call SetTermClassName(temupid, temu)
	"	endif
	"endif

	" Automatically deletes all trailing whitespace on save
	function DelWS()
		let l:save_view = winsaveview()
		:%s/\s*$//e
		call winrestview(l:save_view)
	endfunction
	autocmd BufWritePre * call DelWS()


	" vim -b : edit binary using xxd-format!
	augroup Binary
		au!
		au BufReadPre  *.bin let &bin=1
		au BufReadPost *.bin if &bin | %!xxd
		au BufReadPost *.bin set ft=xxd | endif
		au BufWritePre *.bin if &bin | %!xxd -r
		au BufWritePre *.bin endif
		au BufWritePost *.bin if &bin | %!xxd
		au BufWritePost *.bin set nomod | endif
	augroup END
]]