git ssb

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var h = require('hscrpt')
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var input_file = require('hyperfile')
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var Progress = require('hyperprogress')
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var u = require('./util')
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var prog = Progress()
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//split the hash.
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var parts = window.location.hash.split('#').slice(1)
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var QUOTA = 5*1024*1024
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var human = require('human-time')
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module.exports = function (appname, wb) {
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  document.body.appendChild(prog)
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  function nice_error(err, msg) {
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    if(err.name && err.message && err.stack)
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      return err
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    if('object' !== typeof err)
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      return new Error(msg+JSON.stringify(err))
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  }
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  function btn (label, action) {
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    return h('button', {onclick: action}, [label])
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  }
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  function kb (bytes) {
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    return (Math.round((bytes / 1024) * 100)/100) + 'k'
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  }
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//  var isElectron = typeof process !== 'undefined'
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//      && process.env && process.env[appname+'_INIT']
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  function handleQuota(err, data, id) {
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    if(err
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      && err.name == "QuotaExceededError"
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      && confirm ('adding: '+id+' exceedes quota, clear cache?')
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    ) {
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      wb.prune(data.length, function (err) {
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        if(err) throw prog.fail(err)
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        wb.add(data, id, function (err) {
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          if(err) throw prog.fail(err)
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          wb.run(id, function (err) {
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            if(err) throw prog.fail(err)
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          })
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        })
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      })
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    }
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    else if(!err) wb.run(id, function (err) {
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        if(err) throw prog.fail(err)
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      })
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    else
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      throw prog.fail(err)
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  }
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  ;(function redraw () {
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    wb.versions(function (err, log) {
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      if(err) throw prog.fail(err)
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      document.body.innerHTML = ''
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      if(log.length && !wb.isInit())
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        return wb.run(log[0].value, function (err) {
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          if(err) throw prog.fail(err)
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        })
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      document.body.appendChild(
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        h('div', {classList: 'WebBoot'}, [
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          ( !log.length
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          ? h('h2', 'please enter secure-url or select file to run')
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          : h('ol', {classList: 'WebBoot__recent'}, log.map(function (v) {
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              return h('li', [
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                h('code', [v.value]),
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                h('label',
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                  { title: new Date(v.ts).toString() },
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                  [ ' (loaded ', human(new Date(v.ts)), ') ']
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                ),
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                h('div', [
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                  btn('run', function () {
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                    wb.run(v.value)
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                  }),
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                  btn('revert', function () {
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                    wb.revert(v.ts, function (err) {
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                      if(err) throw prog.fail(err)
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                      redraw()
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                    })
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                  })
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                ])
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              ])
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            }))
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          ),
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          //paste a secure url into this text input
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          h('input', {
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            placeholder: 'enter secure url',
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            onchange: function (ev) {
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              //else, download it. if that succeeds,
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              //add to store, if success, run.
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              //if that fails, offer to clean up, or fail.
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              //add to store, if success, run.
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              //this can fail from quota exceeded.
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              //check whether we have this already, if so, run it.
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              var url = ev.target.value
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              wb.install(url, handleQuota)
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            }
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          }),
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          //or select a local file to run
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          input_file(function (data) {
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            wb.add(data, function (err, id) {
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              handleQuota(err, data, id)
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            })
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          })
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        ])
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      )
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    })
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  })()
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}
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