void function(){
"use strict"
/*
* Manage and Import / Export snippets from chrome (2016)
* hacked together by: http://github.com/soundyogi
* inspired by: aaran etc. 
*/


let_us("execute some init tests", function(){
  if(location.origin !== "chrome-devtools://devtools") throw Error("not in devtools of devtools")
  ok(location.origin === "chrome-devtools://devtools", 'we are in devtools of devtools, good to go')
})


const state = {
  scriptSnippets: [],
  lastIdentifier: 0,
  gui_switches: {
    rename: true,
    format: "json",
    review: false
  }
}


window.state = state


const style = `
<style>
body{
  margin: 0;
  padding: 0;
}
grid {
  display: flex;
  align-items: center;
  justify-content: center;
  -webkit-flex-flow: column;
}
column {
  display: flex;
  -webkit-flex-flow: column;
  width: 30vw;
}
row {
  display: flex;
  -webkit-flex-flow: row;
  width: 90vw;
}
item {
  background: tomato;
  min-height: 20vh;
  color: white;
  font-weight: bold;
  font-size: 1.5em;
  text-align: center;
}
</style>
`

const markup = `
<grid>
  <row>
      <item>
        <button id="load_snippets">Load</button>
      </item>
      <item>
        <label>Drop Files Here
          <input id="import_files" type='file' multiple='true'/>
        </label>
      </item>
      <item>
        <label>Rename?
          <select id='rename'>
            <option value='true'>Rename Import Files</option>
            <option value="false">Overwrite Snippets</option>
          </select>
        </label>
      </item>
      <item>
        <button id="export_snippets">export</button>
        <select id='format'>
          <option value="json">Single .json</option>
          <option value="js">Multiple .js</option>
        </select>
      </item>
      <item>
        <button id="save_snippets">Save to Chrome</button>
      </item>
      <item>
        <button id="reset_snippets">DELETE all on Chrome</button>
      </item>
  </row>
  <row>
   <column><ul id="state.scriptSnippets"></column>
  </row>
</grid>
`


/* Main logic 
*/
const app_window = create_window("menubar=false, height=700, width=700", "chrome snippets import/export")
const document = app_window.document
const init = load_snippets

init()

function load_snippets(){
    app_window.document.body.innerHTML = style+markup
    get_prefs(main)
}

function main(prefs){
  const lastScriptSnippets = prefs.scriptSnippets
  state.scriptSnippets = deserialize(lastScriptSnippets)
  state.lastIdentifier = prefs.scriptSnippets_lastIdentifier


  getID("format").on("change", handle_gui_switches)
  getID("rename").on("change", handle_gui_switches)
  //getID("review").on("change", handle_gui_switches)

  getID("import_files").on("change", import_files)

  getID("export_snippets").on("click", export_snippets)
  getID("load_snippets").on("click", load_snippets)
  getID("save_snippets").on("click", save_snippets)
  getID("reset_snippets").on("click", reset_snippets)

  var loop = setInterval(function(){
    render()
    console.log(state)
  }, 1000)
  window.kill = clearInterval(loop)
  render()

/*
  let_us("import a snippet from bgrins", ()=> {
    const brings_snippets = [
      'allcolors'
    ]

    brings_snippets.forEach(()=>{
      request('https://raw.githubusercontent.com/bgrins/devtools-snippets/master/snippets/allcolors/allcolors.js', function(request){
        var snippet = request.currentTarget.response || request.target.responseText;

      })
    })*/

}

function handle_gui_switches(ev){
    const target = ev.target
    const opt = state.gui_switches

    console.log(target.value)

    if(target.id === 'format') {
      opt.format = target.value
      return update()
    }

    if(target.id === 'rename') {
      opt.rename = !target.value
      return update()
    }
    if(target.id === 'review') {
      opt.review = !opt.review
      return update()
    }
}


function update(){
    render()
}


function render(){
    const list = app_window.document.getElementById("state.scriptSnippets")
    list.innerHTML = ''
    
    state.scriptSnippets.forEach((snippet)=>{
      const a = document.createElement('a')
      a.href = snippet.name
      a.innerHTML = snippet.name
      list.appendChild(a)
    })
}


/* Helpers
*/


function import_files(event){
  const files = event.target.files
  const stack = Object.keys(files)
    .forEach((key)=>{
      const file = files[key]
      const reader = new FileReader()
      reader.fileName = file.name
      reader.onerror = (()=> {throw Error})
      reader.onabort = (()=> {throw Error})
      reader.onload = file_loaded
      reader.readAsText(file)
    })
}


function file_loaded(event){
  const content_string = event.target.result
  const fileName = event.target.fileName
  add_snippet(fileName, content_string)
}

function set_pref(name, data_string){
  InspectorFrontendHost.setPreference(name, data_string)
}


function get_prefs(cb){
  InspectorFrontendHost.getPreferences(function(prefs){
    cb(prefs)
  })
}


function get_snippets(cb){
  get_prefs(function(prefs){
    cb(prefs.scriptSnippets)
  })
}

function save_snippets(){
  set_pref( "scriptSnippets", serialize(state.scriptSnippets) )
  set_pref( "scriptSnippets_lastIdentifier", state.lastIdentifier)
  load_snippets()
}


function reset_snippets(){
  prompt("DELETE ALL SNIPPETS IN DEVTOOLS?")
  // TODO: too risky for dev
  return

  set_pref("scriptSnippets", "[]")
  set_pref("scriptSnippets_lastIdentifier", "0")
}

function add_snippet(name, snippet_content_string){
  if(is_duplicate(name, state.scriptSnippets)) {
    if(!state.gui_switches.rename) return state.scriptSnippets[name] = snippet_content_string
    return add_snippet(name+"copy", snippet_content_string)
  }

  const currentIdentifier = serialize(parseInt(state.lastIdentifier)+1)
  const new_snip = {
    content: snippet_content_string,
    id: currentIdentifier,
    name: name 
  }

  state.scriptSnippets.push( new_snip )
  state.lastIdentifier = currentIdentifier
  update()        
}

function export_snippets(){
    if(state.gui_switches.format === "json") return download_json()
    return download_js()
}

function download_js(){
    state.scriptSnippets.forEach((snippet)=>{
        download(snippet.name, snippet.content)
    })
}

function download_json(){
    const json_data = serialize({'snippets': state.scriptSnippets}, ['snippets', 'name', 'content'], 2)
    download('json', json_data)
}







/* util & shorthand
*/
function request(url, success) {
    var xhr = new XMLHttpRequest();
    xhr.open('GET', url);
    xhr.onload = success;
    xhr.send();
  return xhr;
}


function getID(id){
    const element =  app_window.document.getElementById(id)
    element.on = function on(event_name, fn){
      this.addEventListener(event_name, fn)
      return this
    }
    return element
}


function serialize(object, ...rest){
  if(!object) throw Error("serialize needs an object")
  return JSON.stringify(object, ...rest)
}


function deserialize(string){
  if(typeof string !== "string") throw Error("deserialize needs a string")
  if(string === "") throw Error("no snippets present")
  return JSON.parse(string)
}

function download(name, data){
   const Blob = new window.Blob([data],{
        'type': 'text/utf-8'
    })
    const a = document.createElement('a')
    
    a.href = URL.createObjectURL(Blob)
    a.download = name
    a.click()
}

function getDownloadFileName(count) {
    var abbrevCount;
    var d = new Date();
    var fileName = 'chrome-snippets-' + count + '-'; //$NON-NLS-0$
    fileName += d.getFullYear();
    var month = d.getMonth() + 1;
    fileName += "-" + ((month < 10) ? "0" + month : month); //$NON-NLS-0$ //$NON-NLS-1$
    //	TODO Please note getDay() returns the day of week,
    //	see http://www.ecma-international.org/ecma-262/5.1/#sec-15.9.5.16
    var day = d.getDate();
    fileName += "-" + ((day < 10) ? "0" + day : day); //$NON-NLS-0$ //$NON-NLS-1$
    var hours = d.getHours();
    fileName += "T" + ((hours < 10) ? "0" + hours : hours); //$NON-NLS-0$ //$NON-NLS-1$
    var minutes = d.getMinutes();
    fileName += ((minutes < 10) ? "0" + minutes : minutes); //$NON-NLS-0$
    var seconds = d.getSeconds();
    fileName += ((seconds < 10) ? "0" + seconds : seconds); //$NON-NLS-0$
    var timeZoneOffset = -d.getTimezoneOffset();
    var offsetMinutes = timeZoneOffset % 60;
    var offsetHours = (timeZoneOffset - offsetMinutes) / 60;
    // TODO FIXME >= 0 ?
    fileName += (offsetHours > 0 ? "+" : "") + ((offsetHours < 10) ? "0" + offsetHours : offsetHours) + ((offsetMinutes < 10) ? "0" + offsetMinutes : offsetMinutes); //$NON-NLS-0$ //$NON-NLS-2$ //$NON-NLS-1$
    fileName += '.json'; //$NON-NLS-0$
    return fileName;
}


function is_duplicate(name, snippets_arr){
  const result = snippets_arr.filter(function(snippet){
    return snippet.name === name
  })

  if(result.length === 0) return false
  return true
}


function create_window(options, title){
  const w = window.open("", "", options)
  w.document.title = title
  return w
}


/* 
* UNIT TESTS
*/


/* Nanoharness 
*/
function let_us(msg,f){
  console.log("we_will: "+msg)
  try { f() }
  catch (exception) {
     console.warn(exception.stack.replace(/:(\d+):(\d+)/g, "$& (Line $1, Column $2)"))
  }
}

function ok(expr, msg){
  log(expr, msg)
}

function log(expr, msg){
  expr ? console.log("!pass "+msg) : console.log("?fail "+msg)
}

function html_log(){
  const queue = []
  return function log(expr, msg) {
    queue.push( expr ? `!pass ${msg}` : `?fail ${msg}` )
  }
}


}("thank you for reading this")