var sparkMd5 = {

exports: {}

};

(function(module, exports) {

(function(factory) {
  {
    module.exports = factory();
  }
})((function(undefined$1) {
  var hex_chr = [ "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f" ];
  function md5cycle(x, k) {
    var a = x[0], b = x[1], c = x[2], d = x[3];
    a += (b & c | ~b & d) + k[0] - 680876936 | 0;
    a = (a << 7 | a >>> 25) + b | 0;
    d += (a & b | ~a & c) + k[1] - 389564586 | 0;
    d = (d << 12 | d >>> 20) + a | 0;
    c += (d & a | ~d & b) + k[2] + 606105819 | 0;
    c = (c << 17 | c >>> 15) + d | 0;
    b += (c & d | ~c & a) + k[3] - 1044525330 | 0;
    b = (b << 22 | b >>> 10) + c | 0;
    a += (b & c | ~b & d) + k[4] - 176418897 | 0;
    a = (a << 7 | a >>> 25) + b | 0;
    d += (a & b | ~a & c) + k[5] + 1200080426 | 0;
    d = (d << 12 | d >>> 20) + a | 0;
    c += (d & a | ~d & b) + k[6] - 1473231341 | 0;
    c = (c << 17 | c >>> 15) + d | 0;
    b += (c & d | ~c & a) + k[7] - 45705983 | 0;
    b = (b << 22 | b >>> 10) + c | 0;
    a += (b & c | ~b & d) + k[8] + 1770035416 | 0;
    a = (a << 7 | a >>> 25) + b | 0;
    d += (a & b | ~a & c) + k[9] - 1958414417 | 0;
    d = (d << 12 | d >>> 20) + a | 0;
    c += (d & a | ~d & b) + k[10] - 42063 | 0;
    c = (c << 17 | c >>> 15) + d | 0;
    b += (c & d | ~c & a) + k[11] - 1990404162 | 0;
    b = (b << 22 | b >>> 10) + c | 0;
    a += (b & c | ~b & d) + k[12] + 1804603682 | 0;
    a = (a << 7 | a >>> 25) + b | 0;
    d += (a & b | ~a & c) + k[13] - 40341101 | 0;
    d = (d << 12 | d >>> 20) + a | 0;
    c += (d & a | ~d & b) + k[14] - 1502002290 | 0;
    c = (c << 17 | c >>> 15) + d | 0;
    b += (c & d | ~c & a) + k[15] + 1236535329 | 0;
    b = (b << 22 | b >>> 10) + c | 0;
    a += (b & d | c & ~d) + k[1] - 165796510 | 0;
    a = (a << 5 | a >>> 27) + b | 0;
    d += (a & c | b & ~c) + k[6] - 1069501632 | 0;
    d = (d << 9 | d >>> 23) + a | 0;
    c += (d & b | a & ~b) + k[11] + 643717713 | 0;
    c = (c << 14 | c >>> 18) + d | 0;
    b += (c & a | d & ~a) + k[0] - 373897302 | 0;
    b = (b << 20 | b >>> 12) + c | 0;
    a += (b & d | c & ~d) + k[5] - 701558691 | 0;
    a = (a << 5 | a >>> 27) + b | 0;
    d += (a & c | b & ~c) + k[10] + 38016083 | 0;
    d = (d << 9 | d >>> 23) + a | 0;
    c += (d & b | a & ~b) + k[15] - 660478335 | 0;
    c = (c << 14 | c >>> 18) + d | 0;
    b += (c & a | d & ~a) + k[4] - 405537848 | 0;
    b = (b << 20 | b >>> 12) + c | 0;
    a += (b & d | c & ~d) + k[9] + 568446438 | 0;
    a = (a << 5 | a >>> 27) + b | 0;
    d += (a & c | b & ~c) + k[14] - 1019803690 | 0;
    d = (d << 9 | d >>> 23) + a | 0;
    c += (d & b | a & ~b) + k[3] - 187363961 | 0;
    c = (c << 14 | c >>> 18) + d | 0;
    b += (c & a | d & ~a) + k[8] + 1163531501 | 0;
    b = (b << 20 | b >>> 12) + c | 0;
    a += (b & d | c & ~d) + k[13] - 1444681467 | 0;
    a = (a << 5 | a >>> 27) + b | 0;
    d += (a & c | b & ~c) + k[2] - 51403784 | 0;
    d = (d << 9 | d >>> 23) + a | 0;
    c += (d & b | a & ~b) + k[7] + 1735328473 | 0;
    c = (c << 14 | c >>> 18) + d | 0;
    b += (c & a | d & ~a) + k[12] - 1926607734 | 0;
    b = (b << 20 | b >>> 12) + c | 0;
    a += (b ^ c ^ d) + k[5] - 378558 | 0;
    a = (a << 4 | a >>> 28) + b | 0;
    d += (a ^ b ^ c) + k[8] - 2022574463 | 0;
    d = (d << 11 | d >>> 21) + a | 0;
    c += (d ^ a ^ b) + k[11] + 1839030562 | 0;
    c = (c << 16 | c >>> 16) + d | 0;
    b += (c ^ d ^ a) + k[14] - 35309556 | 0;
    b = (b << 23 | b >>> 9) + c | 0;
    a += (b ^ c ^ d) + k[1] - 1530992060 | 0;
    a = (a << 4 | a >>> 28) + b | 0;
    d += (a ^ b ^ c) + k[4] + 1272893353 | 0;
    d = (d << 11 | d >>> 21) + a | 0;
    c += (d ^ a ^ b) + k[7] - 155497632 | 0;
    c = (c << 16 | c >>> 16) + d | 0;
    b += (c ^ d ^ a) + k[10] - 1094730640 | 0;
    b = (b << 23 | b >>> 9) + c | 0;
    a += (b ^ c ^ d) + k[13] + 681279174 | 0;
    a = (a << 4 | a >>> 28) + b | 0;
    d += (a ^ b ^ c) + k[0] - 358537222 | 0;
    d = (d << 11 | d >>> 21) + a | 0;
    c += (d ^ a ^ b) + k[3] - 722521979 | 0;
    c = (c << 16 | c >>> 16) + d | 0;
    b += (c ^ d ^ a) + k[6] + 76029189 | 0;
    b = (b << 23 | b >>> 9) + c | 0;
    a += (b ^ c ^ d) + k[9] - 640364487 | 0;
    a = (a << 4 | a >>> 28) + b | 0;
    d += (a ^ b ^ c) + k[12] - 421815835 | 0;
    d = (d << 11 | d >>> 21) + a | 0;
    c += (d ^ a ^ b) + k[15] + 530742520 | 0;
    c = (c << 16 | c >>> 16) + d | 0;
    b += (c ^ d ^ a) + k[2] - 995338651 | 0;
    b = (b << 23 | b >>> 9) + c | 0;
    a += (c ^ (b | ~d)) + k[0] - 198630844 | 0;
    a = (a << 6 | a >>> 26) + b | 0;
    d += (b ^ (a | ~c)) + k[7] + 1126891415 | 0;
    d = (d << 10 | d >>> 22) + a | 0;
    c += (a ^ (d | ~b)) + k[14] - 1416354905 | 0;
    c = (c << 15 | c >>> 17) + d | 0;
    b += (d ^ (c | ~a)) + k[5] - 57434055 | 0;
    b = (b << 21 | b >>> 11) + c | 0;
    a += (c ^ (b | ~d)) + k[12] + 1700485571 | 0;
    a = (a << 6 | a >>> 26) + b | 0;
    d += (b ^ (a | ~c)) + k[3] - 1894986606 | 0;
    d = (d << 10 | d >>> 22) + a | 0;
    c += (a ^ (d | ~b)) + k[10] - 1051523 | 0;
    c = (c << 15 | c >>> 17) + d | 0;
    b += (d ^ (c | ~a)) + k[1] - 2054922799 | 0;
    b = (b << 21 | b >>> 11) + c | 0;
    a += (c ^ (b | ~d)) + k[8] + 1873313359 | 0;
    a = (a << 6 | a >>> 26) + b | 0;
    d += (b ^ (a | ~c)) + k[15] - 30611744 | 0;
    d = (d << 10 | d >>> 22) + a | 0;
    c += (a ^ (d | ~b)) + k[6] - 1560198380 | 0;
    c = (c << 15 | c >>> 17) + d | 0;
    b += (d ^ (c | ~a)) + k[13] + 1309151649 | 0;
    b = (b << 21 | b >>> 11) + c | 0;
    a += (c ^ (b | ~d)) + k[4] - 145523070 | 0;
    a = (a << 6 | a >>> 26) + b | 0;
    d += (b ^ (a | ~c)) + k[11] - 1120210379 | 0;
    d = (d << 10 | d >>> 22) + a | 0;
    c += (a ^ (d | ~b)) + k[2] + 718787259 | 0;
    c = (c << 15 | c >>> 17) + d | 0;
    b += (d ^ (c | ~a)) + k[9] - 343485551 | 0;
    b = (b << 21 | b >>> 11) + c | 0;
    x[0] = a + x[0] | 0;
    x[1] = b + x[1] | 0;
    x[2] = c + x[2] | 0;
    x[3] = d + x[3] | 0;
  }
  function md5blk(s) {
    var md5blks = [], i;
    for (i = 0; i < 64; i += 4) {
      md5blks[i >> 2] = s.charCodeAt(i) + (s.charCodeAt(i + 1) << 8) + (s.charCodeAt(i + 2) << 16) + (s.charCodeAt(i + 3) << 24);
    }
    return md5blks;
  }
  function md5blk_array(a) {
    var md5blks = [], i;
    for (i = 0; i < 64; i += 4) {
      md5blks[i >> 2] = a[i] + (a[i + 1] << 8) + (a[i + 2] << 16) + (a[i + 3] << 24);
    }
    return md5blks;
  }
  function md51(s) {
    var n = s.length, state = [ 1732584193, -271733879, -1732584194, 271733878 ], i, length, tail, tmp, lo, hi;
    for (i = 64; i <= n; i += 64) {
      md5cycle(state, md5blk(s.substring(i - 64, i)));
    }
    s = s.substring(i - 64);
    length = s.length;
    tail = [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ];
    for (i = 0; i < length; i += 1) {
      tail[i >> 2] |= s.charCodeAt(i) << (i % 4 << 3);
    }
    tail[i >> 2] |= 128 << (i % 4 << 3);
    if (i > 55) {
      md5cycle(state, tail);
      for (i = 0; i < 16; i += 1) {
        tail[i] = 0;
      }
    }
    tmp = n * 8;
    tmp = tmp.toString(16).match(/(.*?)(.{0,8})$/);
    lo = parseInt(tmp[2], 16);
    hi = parseInt(tmp[1], 16) || 0;
    tail[14] = lo;
    tail[15] = hi;
    md5cycle(state, tail);
    return state;
  }
  function md51_array(a) {
    var n = a.length, state = [ 1732584193, -271733879, -1732584194, 271733878 ], i, length, tail, tmp, lo, hi;
    for (i = 64; i <= n; i += 64) {
      md5cycle(state, md5blk_array(a.subarray(i - 64, i)));
    }
    a = i - 64 < n ? a.subarray(i - 64) : new Uint8Array(0);
    length = a.length;
    tail = [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ];
    for (i = 0; i < length; i += 1) {
      tail[i >> 2] |= a[i] << (i % 4 << 3);
    }
    tail[i >> 2] |= 128 << (i % 4 << 3);
    if (i > 55) {
      md5cycle(state, tail);
      for (i = 0; i < 16; i += 1) {
        tail[i] = 0;
      }
    }
    tmp = n * 8;
    tmp = tmp.toString(16).match(/(.*?)(.{0,8})$/);
    lo = parseInt(tmp[2], 16);
    hi = parseInt(tmp[1], 16) || 0;
    tail[14] = lo;
    tail[15] = hi;
    md5cycle(state, tail);
    return state;
  }
  function rhex(n) {
    var s = "", j;
    for (j = 0; j < 4; j += 1) {
      s += hex_chr[n >> j * 8 + 4 & 15] + hex_chr[n >> j * 8 & 15];
    }
    return s;
  }
  function hex(x) {
    var i;
    for (i = 0; i < x.length; i += 1) {
      x[i] = rhex(x[i]);
    }
    return x.join("");
  }
  if (hex(md51("hello")) !== "5d41402abc4b2a76b9719d911017c592") ;
  if (typeof ArrayBuffer !== "undefined" && !ArrayBuffer.prototype.slice) {
    (function() {
      function clamp(val, length) {
        val = val | 0 || 0;
        if (val < 0) {
          return Math.max(val + length, 0);
        }
        return Math.min(val, length);
      }
      ArrayBuffer.prototype.slice = function(from, to) {
        var length = this.byteLength, begin = clamp(from, length), end = length, num, target, targetArray, sourceArray;
        if (to !== undefined$1) {
          end = clamp(to, length);
        }
        if (begin > end) {
          return new ArrayBuffer(0);
        }
        num = end - begin;
        target = new ArrayBuffer(num);
        targetArray = new Uint8Array(target);
        sourceArray = new Uint8Array(this, begin, num);
        targetArray.set(sourceArray);
        return target;
      };
    })();
  }
  function toUtf8(str) {
    if (/[\u0080-\uFFFF]/.test(str)) {
      str = unescape(encodeURIComponent(str));
    }
    return str;
  }
  function utf8Str2ArrayBuffer(str, returnUInt8Array) {
    var length = str.length, buff = new ArrayBuffer(length), arr = new Uint8Array(buff), i;
    for (i = 0; i < length; i += 1) {
      arr[i] = str.charCodeAt(i);
    }
    return returnUInt8Array ? arr : buff;
  }
  function arrayBuffer2Utf8Str(buff) {
    return String.fromCharCode.apply(null, new Uint8Array(buff));
  }
  function concatenateArrayBuffers(first, second, returnUInt8Array) {
    var result = new Uint8Array(first.byteLength + second.byteLength);
    result.set(new Uint8Array(first));
    result.set(new Uint8Array(second), first.byteLength);
    return returnUInt8Array ? result : result.buffer;
  }
  function hexToBinaryString(hex) {
    var bytes = [], length = hex.length, x;
    for (x = 0; x < length - 1; x += 2) {
      bytes.push(parseInt(hex.substr(x, 2), 16));
    }
    return String.fromCharCode.apply(String, bytes);
  }
  function SparkMD5() {
    this.reset();
  }
  SparkMD5.prototype.append = function(str) {
    this.appendBinary(toUtf8(str));
    return this;
  };
  SparkMD5.prototype.appendBinary = function(contents) {
    this._buff += contents;
    this._length += contents.length;
    var length = this._buff.length, i;
    for (i = 64; i <= length; i += 64) {
      md5cycle(this._hash, md5blk(this._buff.substring(i - 64, i)));
    }
    this._buff = this._buff.substring(i - 64);
    return this;
  };
  SparkMD5.prototype.end = function(raw) {
    var buff = this._buff, length = buff.length, i, tail = [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ], ret;
    for (i = 0; i < length; i += 1) {
      tail[i >> 2] |= buff.charCodeAt(i) << (i % 4 << 3);
    }
    this._finish(tail, length);
    ret = hex(this._hash);
    if (raw) {
      ret = hexToBinaryString(ret);
    }
    this.reset();
    return ret;
  };
  SparkMD5.prototype.reset = function() {
    this._buff = "";
    this._length = 0;
    this._hash = [ 1732584193, -271733879, -1732584194, 271733878 ];
    return this;
  };
  SparkMD5.prototype.getState = function() {
    return {
      buff: this._buff,
      length: this._length,
      hash: this._hash.slice()
    };
  };
  SparkMD5.prototype.setState = function(state) {
    this._buff = state.buff;
    this._length = state.length;
    this._hash = state.hash;
    return this;
  };
  SparkMD5.prototype.destroy = function() {
    delete this._hash;
    delete this._buff;
    delete this._length;
  };
  SparkMD5.prototype._finish = function(tail, length) {
    var i = length, tmp, lo, hi;
    tail[i >> 2] |= 128 << (i % 4 << 3);
    if (i > 55) {
      md5cycle(this._hash, tail);
      for (i = 0; i < 16; i += 1) {
        tail[i] = 0;
      }
    }
    tmp = this._length * 8;
    tmp = tmp.toString(16).match(/(.*?)(.{0,8})$/);
    lo = parseInt(tmp[2], 16);
    hi = parseInt(tmp[1], 16) || 0;
    tail[14] = lo;
    tail[15] = hi;
    md5cycle(this._hash, tail);
  };
  SparkMD5.hash = function(str, raw) {
    return SparkMD5.hashBinary(toUtf8(str), raw);
  };
  SparkMD5.hashBinary = function(content, raw) {
    var hash = md51(content), ret = hex(hash);
    return raw ? hexToBinaryString(ret) : ret;
  };
  SparkMD5.ArrayBuffer = function() {
    this.reset();
  };
  SparkMD5.ArrayBuffer.prototype.append = function(arr) {
    var buff = concatenateArrayBuffers(this._buff.buffer, arr, true), length = buff.length, i;
    this._length += arr.byteLength;
    for (i = 64; i <= length; i += 64) {
      md5cycle(this._hash, md5blk_array(buff.subarray(i - 64, i)));
    }
    this._buff = i - 64 < length ? new Uint8Array(buff.buffer.slice(i - 64)) : new Uint8Array(0);
    return this;
  };
  SparkMD5.ArrayBuffer.prototype.end = function(raw) {
    var buff = this._buff, length = buff.length, tail = [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ], i, ret;
    for (i = 0; i < length; i += 1) {
      tail[i >> 2] |= buff[i] << (i % 4 << 3);
    }
    this._finish(tail, length);
    ret = hex(this._hash);
    if (raw) {
      ret = hexToBinaryString(ret);
    }
    this.reset();
    return ret;
  };
  SparkMD5.ArrayBuffer.prototype.reset = function() {
    this._buff = new Uint8Array(0);
    this._length = 0;
    this._hash = [ 1732584193, -271733879, -1732584194, 271733878 ];
    return this;
  };
  SparkMD5.ArrayBuffer.prototype.getState = function() {
    var state = SparkMD5.prototype.getState.call(this);
    state.buff = arrayBuffer2Utf8Str(state.buff);
    return state;
  };
  SparkMD5.ArrayBuffer.prototype.setState = function(state) {
    state.buff = utf8Str2ArrayBuffer(state.buff, true);
    return SparkMD5.prototype.setState.call(this, state);
  };
  SparkMD5.ArrayBuffer.prototype.destroy = SparkMD5.prototype.destroy;
  SparkMD5.ArrayBuffer.prototype._finish = SparkMD5.prototype._finish;
  SparkMD5.ArrayBuffer.hash = function(arr, raw) {
    var hash = md51_array(new Uint8Array(arr)), ret = hex(hash);
    return raw ? hexToBinaryString(ret) : ret;
  };
  return SparkMD5;
}));

})(sparkMd5);

var SparkMD5 = sparkMd5.exports;

const fileSlice = File.prototype.slice || File.prototype.mozSlice || File.prototype.webkitSlice;

class FileChecksum {

static create(file, callback) {
  const instance = new FileChecksum(file);
  instance.create(callback);
}
constructor(file) {
  this.file = file;
  this.chunkSize = 2097152;
  this.chunkCount = Math.ceil(this.file.size / this.chunkSize);
  this.chunkIndex = 0;
}
create(callback) {
  this.callback = callback;
  this.md5Buffer = new SparkMD5.ArrayBuffer;
  this.fileReader = new FileReader;
  this.fileReader.addEventListener("load", (event => this.fileReaderDidLoad(event)));
  this.fileReader.addEventListener("error", (event => this.fileReaderDidError(event)));
  this.readNextChunk();
}
fileReaderDidLoad(event) {
  this.md5Buffer.append(event.target.result);
  if (!this.readNextChunk()) {
    const binaryDigest = this.md5Buffer.end(true);
    const base64digest = btoa(binaryDigest);
    this.callback(null, base64digest);
  }
}
fileReaderDidError(event) {
  this.callback(`Error reading ${this.file.name}`);
}
readNextChunk() {
  if (this.chunkIndex < this.chunkCount || this.chunkIndex == 0 && this.chunkCount == 0) {
    const start = this.chunkIndex * this.chunkSize;
    const end = Math.min(start + this.chunkSize, this.file.size);
    const bytes = fileSlice.call(this.file, start, end);
    this.fileReader.readAsArrayBuffer(bytes);
    this.chunkIndex++;
    return true;
  } else {
    return false;
  }
}

}

function getMetaValue(name) {

const element = findElement(document.head, `meta[name="${name}"]`);
if (element) {
  return element.getAttribute("content");
}

}

function findElements(root, selector) {

if (typeof root == "string") {
  selector = root;
  root = document;
}
const elements = root.querySelectorAll(selector);
return toArray(elements);

}

function findElement(root, selector) {

if (typeof root == "string") {
  selector = root;
  root = document;
}
return root.querySelector(selector);

}

function dispatchEvent(element, type, eventInit = {}) {

const {disabled: disabled} = element;
const {bubbles: bubbles, cancelable: cancelable, detail: detail} = eventInit;
const event = document.createEvent("Event");
event.initEvent(type, bubbles || true, cancelable || true);
event.detail = detail || {};
try {
  element.disabled = false;
  element.dispatchEvent(event);
} finally {
  element.disabled = disabled;
}
return event;

}

function toArray(value) {

if (Array.isArray(value)) {
  return value;
} else if (Array.from) {
  return Array.from(value);
} else {
  return [].slice.call(value);
}

}

class BlobRecord {

constructor(file, checksum, url, customHeaders = {}) {
  this.file = file;
  this.attributes = {
    filename: file.name,
    content_type: file.type || "application/octet-stream",
    byte_size: file.size,
    checksum: checksum
  };
  this.xhr = new XMLHttpRequest;
  this.xhr.open("POST", url, true);
  this.xhr.responseType = "json";
  this.xhr.setRequestHeader("Content-Type", "application/json");
  this.xhr.setRequestHeader("Accept", "application/json");
  this.xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest");
  Object.keys(customHeaders).forEach((headerKey => {
    this.xhr.setRequestHeader(headerKey, customHeaders[headerKey]);
  }));
  const csrfToken = getMetaValue("csrf-token");
  if (csrfToken != undefined) {
    this.xhr.setRequestHeader("X-CSRF-Token", csrfToken);
  }
  this.xhr.addEventListener("load", (event => this.requestDidLoad(event)));
  this.xhr.addEventListener("error", (event => this.requestDidError(event)));
}
get status() {
  return this.xhr.status;
}
get response() {
  const {responseType: responseType, response: response} = this.xhr;
  if (responseType == "json") {
    return response;
  } else {
    return JSON.parse(response);
  }
}
create(callback) {
  this.callback = callback;
  this.xhr.send(JSON.stringify({
    blob: this.attributes
  }));
}
requestDidLoad(event) {
  if (this.status >= 200 && this.status < 300) {
    const {response: response} = this;
    const {direct_upload: direct_upload} = response;
    delete response.direct_upload;
    this.attributes = response;
    this.directUploadData = direct_upload;
    this.callback(null, this.toJSON());
  } else {
    this.requestDidError(event);
  }
}
requestDidError(event) {
  this.callback(`Error creating Blob for "${this.file.name}". Status: ${this.status}`);
}
toJSON() {
  const result = {};
  for (const key in this.attributes) {
    result[key] = this.attributes[key];
  }
  return result;
}

}

class BlobUpload {

constructor(blob) {
  this.blob = blob;
  this.file = blob.file;
  const {url: url, headers: headers} = blob.directUploadData;
  this.xhr = new XMLHttpRequest;
  this.xhr.open("PUT", url, true);
  this.xhr.responseType = "text";
  for (const key in headers) {
    this.xhr.setRequestHeader(key, headers[key]);
  }
  this.xhr.addEventListener("load", (event => this.requestDidLoad(event)));
  this.xhr.addEventListener("error", (event => this.requestDidError(event)));
}
create(callback) {
  this.callback = callback;
  this.xhr.send(this.file.slice());
}
requestDidLoad(event) {
  const {status: status, response: response} = this.xhr;
  if (status >= 200 && status < 300) {
    this.callback(null, response);
  } else {
    this.requestDidError(event);
  }
}
requestDidError(event) {
  this.callback(`Error storing "${this.file.name}". Status: ${this.xhr.status}`);
}

}

let id = 0;

class DirectUpload {

constructor(file, url, delegate, customHeaders = {}) {
  this.id = ++id;
  this.file = file;
  this.url = url;
  this.delegate = delegate;
  this.customHeaders = customHeaders;
}
create(callback) {
  FileChecksum.create(this.file, ((error, checksum) => {
    if (error) {
      callback(error);
      return;
    }
    const blob = new BlobRecord(this.file, checksum, this.url, this.customHeaders);
    notify(this.delegate, "directUploadWillCreateBlobWithXHR", blob.xhr);
    blob.create((error => {
      if (error) {
        callback(error);
      } else {
        const upload = new BlobUpload(blob);
        notify(this.delegate, "directUploadWillStoreFileWithXHR", upload.xhr);
        upload.create((error => {
          if (error) {
            callback(error);
          } else {
            callback(null, blob.toJSON());
          }
        }));
      }
    }));
  }));
}

}

function notify(object, methodName, …messages) {

if (object && typeof object[methodName] == "function") {
  return object[methodName](...messages);
}

}

class DirectUploadController {

constructor(input, file) {
  this.input = input;
  this.file = file;
  this.directUpload = new DirectUpload(this.file, this.url, this);
  this.dispatch("initialize");
}
start(callback) {
  const hiddenInput = document.createElement("input");
  hiddenInput.type = "hidden";
  hiddenInput.name = this.input.name;
  this.input.insertAdjacentElement("beforebegin", hiddenInput);
  this.dispatch("start");
  this.directUpload.create(((error, attributes) => {
    if (error) {
      hiddenInput.parentNode.removeChild(hiddenInput);
      this.dispatchError(error);
    } else {
      hiddenInput.value = attributes.signed_id;
    }
    this.dispatch("end");
    callback(error);
  }));
}
uploadRequestDidProgress(event) {
  const progress = event.loaded / event.total * 100;
  if (progress) {
    this.dispatch("progress", {
      progress: progress
    });
  }
}
get url() {
  return this.input.getAttribute("data-direct-upload-url");
}
dispatch(name, detail = {}) {
  detail.file = this.file;
  detail.id = this.directUpload.id;
  return dispatchEvent(this.input, `direct-upload:${name}`, {
    detail: detail
  });
}
dispatchError(error) {
  const event = this.dispatch("error", {
    error: error
  });
  if (!event.defaultPrevented) {
    alert(error);
  }
}
directUploadWillCreateBlobWithXHR(xhr) {
  this.dispatch("before-blob-request", {
    xhr: xhr
  });
}
directUploadWillStoreFileWithXHR(xhr) {
  this.dispatch("before-storage-request", {
    xhr: xhr
  });
  xhr.upload.addEventListener("progress", (event => this.uploadRequestDidProgress(event)));
}

}

const inputSelector = “input[data-direct-upload-url]:not()”;

class DirectUploadsController {

constructor(form) {
  this.form = form;
  this.inputs = findElements(form, inputSelector).filter((input => input.files.length));
}
start(callback) {
  const controllers = this.createDirectUploadControllers();
  const startNextController = () => {
    const controller = controllers.shift();
    if (controller) {
      controller.start((error => {
        if (error) {
          callback(error);
          this.dispatch("end");
        } else {
          startNextController();
        }
      }));
    } else {
      callback();
      this.dispatch("end");
    }
  };
  this.dispatch("start");
  startNextController();
}
createDirectUploadControllers() {
  const controllers = [];
  this.inputs.forEach((input => {
    toArray(input.files).forEach((file => {
      const controller = new DirectUploadController(input, file);
      controllers.push(controller);
    }));
  }));
  return controllers;
}
dispatch(name, detail = {}) {
  return dispatchEvent(this.form, `direct-uploads:${name}`, {
    detail: detail
  });
}

}

const processingAttribute = “data-direct-uploads-processing”;

const submitButtonsByForm = new WeakMap;

let started = false;

function start() {

if (!started) {
  started = true;
  document.addEventListener("click", didClick, true);
  document.addEventListener("submit", didSubmitForm, true);
  document.addEventListener("ajax:before", didSubmitRemoteElement);
}

}

function didClick(event) {

const button = event.target.closest("button, input");
if (button && button.type === "submit" && button.form) {
  submitButtonsByForm.set(button.form, button);
}

}

function didSubmitForm(event) {

handleFormSubmissionEvent(event);

}

function didSubmitRemoteElement(event) {

if (event.target.tagName == "FORM") {
  handleFormSubmissionEvent(event);
}

}

function handleFormSubmissionEvent(event) {

const form = event.target;
if (form.hasAttribute(processingAttribute)) {
  event.preventDefault();
  return;
}
const controller = new DirectUploadsController(form);
const {inputs: inputs} = controller;
if (inputs.length) {
  event.preventDefault();
  form.setAttribute(processingAttribute, "");
  inputs.forEach(disable);
  controller.start((error => {
    form.removeAttribute(processingAttribute);
    if (error) {
      inputs.forEach(enable);
    } else {
      submitForm(form);
    }
  }));
}

}

function submitForm(form) {

let button = submitButtonsByForm.get(form) || findElement(form, "input[type=submit], button[type=submit]");
if (button) {
  const {disabled: disabled} = button;
  button.disabled = false;
  button.focus();
  button.click();
  button.disabled = disabled;
} else {
  button = document.createElement("input");
  button.type = "submit";
  button.style.display = "none";
  form.appendChild(button);
  button.click();
  form.removeChild(button);
}
submitButtonsByForm.delete(form);

}

function disable(input) {

input.disabled = true;

}

function enable(input) {

input.disabled = false;

}

function autostart() {

if (window.ActiveStorage) {
  start();
}

}

setTimeout(autostart, 1);

class AttachmentUpload {

constructor(attachment, element) {
  this.attachment = attachment;
  this.element = element;
  this.directUpload = new DirectUpload(attachment.file, this.directUploadUrl, this);
}
start() {
  this.directUpload.create(this.directUploadDidComplete.bind(this));
  this.dispatch("start");
}
directUploadWillStoreFileWithXHR(xhr) {
  xhr.upload.addEventListener("progress", (event => {
    const progress = event.loaded / event.total * 100;
    this.attachment.setUploadProgress(progress);
    if (progress) {
      this.dispatch("progress", {
        progress: progress
      });
    }
  }));
}
directUploadDidComplete(error, attributes) {
  if (error) {
    this.dispatchError(error);
  } else {
    this.attachment.setAttributes({
      sgid: attributes.attachable_sgid,
      url: this.createBlobUrl(attributes.signed_id, attributes.filename)
    });
    this.dispatch("end");
  }
}
createBlobUrl(signedId, filename) {
  return this.blobUrlTemplate.replace(":signed_id", signedId).replace(":filename", encodeURIComponent(filename));
}
dispatch(name, detail = {}) {
  detail.attachment = this.attachment;
  return dispatchEvent(this.element, `direct-upload:${name}`, {
    detail: detail
  });
}
dispatchError(error) {
  const event = this.dispatch("error", {
    error: error
  });
  if (!event.defaultPrevented) {
    alert(error);
  }
}
get directUploadUrl() {
  return this.element.dataset.directUploadUrl;
}
get blobUrlTemplate() {
  return this.element.dataset.blobUrlTemplate;
}

}

addEventListener(“trix-attachment-add”, (event => {

const {attachment: attachment, target: target} = event;
if (attachment.file) {
  const upload = new AttachmentUpload(attachment, target);
  upload.start();
}

}));