Initial commit

lib/assets/javascripts/deep-insights/formatter.js

@@ -0,0 +1,116 @@
+var _ = require('underscore');
+var d3 = require('d3');
+var moment = require('moment');
+
+var AGGREGATION_FORMATS = {
+  second: {
+    display: 'HH:mm:ss',
+    unit: 's'
+  },
+  minute: {
+    display: 'HH:mm - MMM Do, YYYY',
+    unit: 'm'
+  },
+  hour: {
+    display: 'HH:00 - MMM Do, YYYY',
+    unit: 'h'
+  },
+  day: {
+    display: 'MMM Do, YYYY',
+    unit: 'd'
+  },
+  week: {
+    display: 'MMM Do, YYYY',
+    unit: 'w'
+  },
+  month: {
+    display: 'MMM YYYY',
+    unit: 'M'
+  },
+  quarter: {
+    display: '[Q]Q YYYY',
+    unit: 'Q'
+  },
+  year: {
+    display: 'YYYY',
+    unit: 'y'
+  },
+  decade: {
+    display: 'YYYY',
+    unit: 'y'
+  }
+};
+
+var format = {};
+
+format.formatNumber = function (value, unit) {
+  if (!_.isNumber(value) || value === 0) {
+    return value;
+  }
+
+  var format = d3.format('.2s');
+  var p = 0;
+  var absV = Math.abs(value);
+
+  if (value > 1000) {
+    value = format(value) + (unit ? ' ' + unit : '');
+    return value;
+  }
+
+  if (absV > 100) {
+    p = 0;
+  } else if (absV > 10) {
+    p = 1;
+  } else if (absV > 1) {
+    p = 2;
+  } else if (absV > 0) {
+    p = Math.max(Math.ceil(Math.abs(Math.log(absV) / Math.log(10))) + 2, 3);
+  }
+
+  value = value.toFixed(p);
+  var m = value.match(/(\.0+)$/);
+  if (m) {
+    value = value.replace(m[0], '');
+  }
+
+  return value;
+};
+
+format.formatDate = function (value) {
+  return d3.time.format('%Y-%m-%d')(value);
+};
+
+format.formatTime = function (value) {
+  return d3.time.format('%H:%M:%S %d/%m/%Y')(value);
+};
+
+format.timeFactory = function (format) {
+  return d3.time.format(format);
+};
+
+format.formatValue = function (value) {
+  if (_.isNumber(value)) {
+    return format.formatNumber(value);
+  }
+  if (_.isDate(value)) {
+    return format.formatDate(value);
+  }
+  return value;
+};
+
+format.timestampFactory = function (aggregation, offset) {
+  return function (timestamp) {
+    if (!_.has(AGGREGATION_FORMATS, aggregation)) {
+      return '-';
+    }
+    var format = AGGREGATION_FORMATS[aggregation];
+    var date = moment.unix(timestamp).utc();
+    if (_.isFinite(offset)) {
+      date.utcOffset(offset / 60);
+    }
+    var formatted = date.format(format.display);
+    return formatted;
+  };
+};
+
+module.exports = format;