git ssb

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//poll the progress() function and report how much waiting there is...
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//just whipped this up, obviously room for improvement here.
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module.exports = function (progress) {
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  function bar (r) {
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    var s = '\r', M = 50
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    for(var i = 0; i < M; i++)
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      s += i < M*r ? '*' : '.'
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    return s
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  }
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  function round (n, p) {
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    return Math.round(n * p) / p
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  }
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  function percent (n) {
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    return (round(n, 1000)*100).toString().substring(0, 4)+'%'
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  }
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  function rate (prog) {
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    if(prog.target == prog.current) return 1
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    return (prog.current - prog.start) / (prog.target - prog.start)
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  }
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  var prog = -1
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  var int = setInterval(function () {
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    var p = progress()
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    var r = 1, c = 0
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    var tasks = []
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    for(var k in p) {
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      var _r = rate(p[k])
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      if(_r < 1)
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        tasks.push(k+':'+percent(_r))
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      r = Math.min(_r, r)
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      c++
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    }
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    if(r != prog) {
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      prog = r
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      var msg = tasks.join(', ')
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      process.stdout.write('\r'+bar(prog) + ' ('+msg+')\x1b[K\r')
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    }
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  }, 333)
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  int.unref && int.unref()
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}
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