var is_iphone =
  navigator.userAgent.match(/iPhone/i) || navigator.userAgent.match(/iPod/i);
var is_ipad = navigator.userAgent.match(/iPad/i);
var is_android = navigator.userAgent.match(/Android/i);
var is_mobile = is_iphone || is_ipad || is_android;
var is_desktop = !is_mobile;
document.body.classList.add(is_desktop ? "desktop" : "mobile");

const AUDIO_REGEXP = /\.(mp3|wav|aif|aiff|ogg|opus|flac)$/i;
const IMAGE_REGEXP = /\.(gif|jpg|jpeg|png)$/i;
const CONTAINS_IMAGE_URL_REGEXP = /http\S+\.(gif|jpe?g|png)/i;

function choice(a) {
  return a[randint(a.length)];
}

function csrf() {
  return $("[name=_csrf]").attr("value");
}
function bold_terms(s, terms) {
  s = sanitizeHTML(s);
  terms.forEach((term) => {
    s = s.replace(new RegExp(term, "ig"), "<b>" + term + "</b>");
  });
  return s;
}
function querystring(opt) {
  return (
    "?" +
    Object.keys(opt)
      .map((key) => {
        return encodeURIComponent(key) + "=" + encodeURIComponent(opt[key]);
      })
      .join("&")
  );
}
function commatize(n, radix) {
  radix = radix || 1000;
  var nums = [],
    i,
    counter = 0,
    r = Math.floor;
  if (radix !== -1 && n > radix) {
    n /= radix;
    nums.unshift(r((n * 10) % 10));
    nums.unshift(".");
  }
  do {
    i = r(n % 10);
    n = r(n / 10);
    counter += 1;
    if (n && !(counter % 3)) {
      i = " " + r(i);
    }
    nums.unshift(i);
  } while (n);
  return nums.join("");
}

function privacy_dot(p) {
  if (!p) return "&middot;";
  else return ".:";
}

var short_months = "Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec".split(" ");
function verbose_date(date, no_pad_hours) {
  var date = new Date(date * 1000);
  var d = date.getDate();
  var m = date.getMinutes();
  var h = date.getHours();
  var meridian;

  if (h == 0) {
    h = 12;
    meridian = "&nbsp;am";
  } else if (h == 12) {
    meridian = "&nbsp;pm";
  } else if (h > 12) {
    h -= 12;
    meridian = "&nbsp;pm";
  } else {
    meridian = "&nbsp;am";
  }

  if (d < 10) d = "0" + d;
  if (m < 10) m = "0" + m;
  if (!no_pad_hours && h < 10) h = "0" + h;

  // non-breaking hyphen: &#8209;
  var date =
    d +
    "&nbsp;" +
    short_months[date.getMonth()] +
    "&nbsp;" +
    date.getFullYear();
  var time = h + ":" + m + meridian;

  return [date, time];
}
function carbon_date(date, no_bold) {
  var span = +new Date() / 1000 - date;
  if (!no_bold && span < 86400) {
    // modified today
    color = "new";
  } else if (span < 604800) {
    // modifed this week
    color = "recent";
  } else if (span < 1209600) {
    // modifed 2 weeks ago
    color = "med";
  } else if (span < 3024000) {
    // modifed 5 weeks ago
    color = "old";
  } else if (span < 12315200) {
    // modifed 6 months ago
    color = "older";
  } else {
    color = "quiet";
  }
  return color;
}

function hush_views(n, bias, no_bold) {
  var txt = commatize(n, 1000);
  bias = bias || 1;
  n = n || 0;
  if (n < 30) {
    return ["quiet", n + "&nbsp;v."];
  }
  if (n < 200) {
    return ["quiet", txt + "&nbsp;v."];
  } else if (n < 500) {
    return ["old", txt + "&nbsp;v."];
  } else if (n < 1000) {
    return ["med", txt + "&nbsp;v."];
  } else if (n < 5000) {
    return ["recent", txt + "&nbsp;kv."];
  } else if (no_bold || n < 10000) {
    return ["recent", txt + "&nbsp;kv."];
  } else {
    return ["new", txt + "&nbsp;kv."];
  }
}
function hush_threads(n, bias, no_bold) {
  var txt = commatize(n, -1);
  bias = bias || 1;
  n = n || 0;
  if (n < 10) {
    return ["quiet", n + "&nbsp;t."];
  } else if (n < 25) {
    return ["old", txt + "&nbsp;t."];
  } else if (n < 50) {
    return ["med", txt + "&nbsp;t."];
  } else if (no_bold || n < 100) {
    return ["recent", txt + "&nbsp;t."];
  } else {
    return ["new", txt + "&nbsp;t."];
  }
}

function hush_size(n, bias, no_bold) {
  var txt = commatize(Math.floor(n / 1024), 1000);
  bias = 1 || bias;
  n = n || 0;
  if (n < 1024) {
    return ["quiet", n + "&nbsp;b."];
  }
  if (n < 1000 * 1000) {
    return ["quiet", txt + "&nbsp;kb."];
  }
  if (n < 20000000 / bias) {
    return ["quiet", txt + "&nbsp;mb."];
  }
  if (n < 50000000 / bias) {
    return ["old", txt + "&nbsp;mb."];
  }
  if (n < 80000000 / bias) {
    return ["med", txt + "&nbsp;mb."];
  }
  if (no_bold || n < 170000000 / bias) {
    return ["recent", txt + "&nbsp;mb."];
  }
  if (n >= 10000 * 1000 * 1000) {
    console.log(n);
    txt = commatize(Math.floor(n / (1024 * 1024 * 1024)));
    return ["new", txt + "&nbsp;gb."];
  }
  return ["new", txt + "&nbsp;mb."];
}

function hush_null(n, unit, no_bold) {
  n = commatize(n, -1);
  var s = unit ? n + "&nbsp;" + unit + "." : n;
  if (n < 3) {
    return ["quiet", s];
  } else if (n < 6) {
    return ["older", s];
  } else if (n < 10) {
    return ["old", s];
  } else if (n < 16) {
    return ["med", s];
  } else if (no_bold || n < 21) {
    return ["recent", s];
  } else {
    return ["new", s];
  }
}

function courtesy_s(n, s) {
  return n == 1 ? "" : s || "s";
}

var revision_letters = "z a b c d f g h j k l m n p q r s t v w x y".split(" ");
function get_revision(thread) {
  if (!thread.revision) return "";
  var rev = thread.revision;
  var n = 0;
  var digits = "";
  do {
    n = rev % 21;
    rev = Math.floor(rev / 21);
    digits = revision_letters[n] + digits;
  } while (rev !== 0);
  return digits;
}

function get_age(t, long) {
  var age = Math.abs(Date.now() / 1000 - t);
  var r = Math.floor;
  var m;
  if (age < 5) {
    return "now";
  }
  if (age < 60) {
    return r(age) + (long ? " seconds" : "s");
  }
  age /= 60;
  if (age < 60) {
    return r(age) + (long ? " minutes" : "m");
  }
  m = r(age % 60);
  age /= 60;
  if (m > 0 && age < 2) {
    return r(age) + (long ? " hours " + m + " minutes" : "h" + m + "m");
  }
  if (age < 24) {
    return r(age) + (long ? " hours" : "h");
  }
  age /= 24;
  if (age < 7) {
    return r(age) + (long ? " days" : "d");
  }
  age /= 7;
  if (age < 12) {
    return r(age) + (long ? " weeks" : "w");
  }
  age /= 4;
  if (age < 12) {
    return r(age) + (long ? " months" : "m");
  }
  age /= 12;
  return r(age) + (long ? " years" : "y");
}
const age_scale = [
  [0, 1.0],
  [60 * 10, 1.0],
  [60 * 60, 0.975],
  [60 * 60 * 8, 0.95],
  [60 * 60 * 24, 0.925],
  [60 * 60 * 24 * 7, 0.9],
  [60 * 60 * 24 * 7 * 4, 0.875],
  [60 * 60 * 24 * 7 * 4 * 12, 0.85],
];
function get_age_opacity(t) {
  var age = Math.abs(Date.now() / 1000 - t);
  return get_scale_opacity(age, age_scale);
}
const size_scale = [
  [0, 0.0],
  [1, 0.7],
  [5, 0.8],
  [10, 0.9],
  [15, 0.95],
  [20, 0.99],
];
function get_size_opacity(n) {
  return get_scale_opacity(n, size_scale);
}
const views_scale = [
  [0, 0.5],
  [100, 0.8],
  [1000, 0.9],
  [10000, 1.0],
];
function get_views_opacity(n) {
  return get_scale_opacity(n, views_scale);
}
/**
 * find a value on one axis of an array of points, and return the proportional point
 * @param  {Array}  value   a value, to be matched on the first column of scale
 * @param  {Array}  scale   an array of points: (value, target)
 * @return {Number}  a proportional point within the closest target values
 */
function get_scale_opacity(value, scale) {
  for (let i = 1; i < scale.length; i++) {
    const [max_value, max_lerp] = scale[i];
    if (value === max_value) {
      return max_lerp;
    }
    if (value < max_value) {
      const [min_value, min_lerp] = scale[i - 1];
      return lerp(norm(value, min_value, max_value), min_lerp, max_lerp);
    }
  }
  return scale[scale.length - 1][1];
}
function trimComment({ isViewingThread, lines, snippetSize, cropSize }) {
  return function (comment) {
    return isViewingThread || comment.comment.length < (cropSize || 256)
      ? comment
      : {
          ...comment,
          comment:
            comment.comment
              .split("\n")
              .slice(0, lines || 5)
              .join("\n")
              .substr(0, snippetSize || 512)
              .replace(/\s+\w+$/, "")
              .replace(/<tt>.*/m, "")
              .replace(/<pre>.*/m, "")
              .replace(/<code>.*/m, "")
              .replace(/<[^>]+$/m, "") +
            `... <a href="/stream/thread/${comment.thread}" class="readMore">Read more...</a>`,
        };
  };
}

function tidy_urls(s, short_urls) {
  var ret = (s || "")
    .split("\n")
    .map(function (line) {
      if (line.indexOf("<") !== -1) {
        return line;
      }
      return line.replace(/https?:\/\/[^ ]+/g, function (url) {
        if (is_image(url)) {
          return (
            '<a href="' +
            url +
            '" target="_blank" rel="noopener noreferrer"><img src="' +
            url +
            '"></a>'
          );
        } else if (short_urls) {
          return (
            '<a href="' +
            url +
            '" target="_blank" rel="noopener noreferrer">[' +
            get_domain(url) +
            "]</a>"
          );
        } else {
          return (
            '<a href="' +
            url +
            '" target="_blank" rel="noopener noreferrer">' +
            url +
            "</a>"
          );
        }
      });
    })
    .join("\n")
    .replace(/\r/g, "")
    .replace(/<code>\n/g, "<code>")
    .replace(/<\/code>\n/g, "</code>");
  return ret;
}
function get_domain(url) {
  return url
    .replace(/https?:\/\//, "")
    .replace(/\/.*/, "")
    .replace(/www\./, "");
}
function is_image(url) {
  return !!url.match(/\.(gif|jpe?g|png)(\?.*)?$/i);
}
function make_link(file) {
  if (file.storage) {
    return (
      "//s3.amazonaws.com/" +
      file.storage +
      sdk.opt.s3.path +
      "/data/" +
      file.thread +
      "/" +
      encodeURIComponent(file.filename)
    );
  }
  if (file.filename.indexOf("http") !== 0) {
    return "/data/" + file.thread + "/" + encodeURIComponent(file.filename);
  }
  return file.filename;
}
function profile_image(username) {
  return "//s3.amazonaws.com/i.asdf.us/bucky/profile/" + username + ".jpg";
}
function make_thumb(file) {
  if (file.storage) {
    return (
      "//s3.amazonaws.com/" +
      file.storage +
      sdk.opt.s3.path +
      "/data/" +
      file.thread +
      "/" +
      encodeURIComponent(file.filename)
    );
  }
  if (file.filename.indexOf("http") !== 0) {
    return "/data/" + file.thread + "/" + file.filename;
  }
  return "/data/" + file.thread + "/" + file.filename;
  // var partz = file.filename.toLowerCase().split("/")
  // return partz.splice(partz.length-2, 0, ".thumb").join("/")
}

var metadataTemplate = $(".metadata_template").html();
function metadata(thread) {
  var datetime = verbose_date(thread.createdate, true);
  var age = get_age(thread.lastmodified, true);
  var t = metadataTemplate
    .replace(/{{username}}/g, thread.username)
    .replace(/{{date}}/g, datetime[0])
    .replace(/{{time}}/g, datetime[1])
    .replace(/{{active}}/g, age + " ago")
    .replace(/{{views}}/g, thread.viewed + " view" + courtesy_s(thread.viewed));
  return t;
}