tweet-comment.vim

function! s:comment(obj, timer) abort
  let winid = popup_create(a:obj.text, #{
        \ col: &columns - 40,
        \ line: rand(srand()) % &lines,
        \ minwidth: strlen(a:obj.text),
        \ maxwidth: 40,
        \ tabpage: -1,
        \ zindex: 300,
        \ })

  call timer_start(100, function("s:move", [winid]), #{
        \ repeat: -1,
        \ })
endfunction

function! s:move(winid, timer) abort
  let opt = popup_getpos(a:winid)
  if opt.col is# 1
    call timer_stop(a:timer)
    call popup_close(a:winid)
    return
  endif

  let opt.col -= 1
  call popup_move(a:winid, opt)
  redraw
endfunction

function! s:tweet(ch, msg) abort
  let obj = json_decode(a:msg)
  if obj.text is# ""
    return
  endif
  let wait = rand(srand()) % 12
  call timer_start(wait*800, function('s:comment', [obj]))
endfunction

function! s:onerr(ch, msg) abort
  echohl ErrorMsg
  echom a:msg
  echohl None
endfunction

call job_start(["twty", "-S", "20s", "-json"], #{
      \ out_cb: function('s:tweet'),
      \ err_cb: function('s:onerr')
      \ })