feat: add track length and duration (seconds) to parsed information

package-lock.json

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+        "turf-inside": "^3.0.12",
+        "turf-planepoint": "^3.0.12",
+        "turf-square": "^3.0.12",
+        "turf-tin": "^3.0.12"
+      }
+    },
+    "turf-kinks": {
+      "version": "3.0.12",
+      "resolved": "https://registry.npmjs.org/turf-kinks/-/turf-kinks-3.0.12.tgz",
+      "integrity": "sha1-6cmo26VyTZjyNQ/FveugaewzN1U=",
+      "requires": {
+        "turf-helpers": "^3.0.12"
+      }
+    },
+    "turf-line-distance": {
+      "version": "3.0.12",
+      "resolved": "https://registry.npmjs.org/turf-line-distance/-/turf-line-distance-3.0.12.tgz",
+      "integrity": "sha1-cQj1smkH97jC3Rs5l4Zt06YOj18=",
+      "requires": {
+        "turf-distance": "^3.0.12",
+        "turf-helpers": "^3.0.12"
+      }
+    },
+    "turf-line-slice": {
+      "version": "3.0.12",
+      "resolved": "https://registry.npmjs.org/turf-line-slice/-/turf-line-slice-3.0.12.tgz",
+      "integrity": "sha1-9fGszJKtrmnqGsCynwdSmijd6RY=",
+      "requires": {
+        "turf-bearing": "^3.0.12",
+        "turf-destination": "^3.0.12",
+        "turf-distance": "^3.0.12",
+        "turf-helpers": "^3.0.12",
+        "turf-point-on-line": "^3.0.12"
+      }
+    },
+    "turf-meta": {
+      "version": "3.0.12",
+      "resolved": "https://registry.npmjs.org/turf-meta/-/turf-meta-3.0.12.tgz",
+      "integrity": "sha1-CqmhyvgrKloI1U4IMLW1o/oOijg="
+    },
+    "turf-midpoint": {
+      "version": "3.0.12",
+      "resolved": "https://registry.npmjs.org/turf-midpoint/-/turf-midpoint-3.0.12.tgz",
+      "integrity": "sha1-sSdlroms3uhVb9XibJxfoEGgLL4=",
+      "requires": {
+        "turf-bearing": "^3.0.12",
+        "turf-destination": "^3.0.12",
+        "turf-distance": "^3.0.12",
+        "turf-invariant": "^3.0.12"
+      }
+    },
+    "turf-nearest": {
+      "version": "3.0.12",
+      "resolved": "https://registry.npmjs.org/turf-nearest/-/turf-nearest-3.0.12.tgz",
+      "integrity": "sha1-cAIH9EQ/BQlvhs0kb5KfFw369G0=",
+      "requires": {
+        "turf-distance": "^3.0.12"
+      }
+    },
+    "turf-planepoint": {
+      "version": "3.0.12",
+      "resolved": "https://registry.npmjs.org/turf-planepoint/-/turf-planepoint-3.0.12.tgz",
+      "integrity": "sha1-LDeuDxf8sw22448NWe5sDdbKqa8="
+    },
+    "turf-point": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/turf-point/-/turf-point-2.0.1.tgz",
+      "integrity": "sha1-otzDCi0g9Ez1xicd97riwOIUYGk=",
+      "requires": {
+        "minimist": "^1.1.0"
+      }
+    },
+    "turf-point-grid": {
+      "version": "3.0.12",
+      "resolved": "https://registry.npmjs.org/turf-point-grid/-/turf-point-grid-3.0.12.tgz",
+      "integrity": "sha1-1gSXi+ELyeUzBq4CzvcJhDHbSXE=",
+      "requires": {
+        "turf-distance": "^3.0.12",
+        "turf-helpers": "^3.0.12"
+      }
+    },
+    "turf-point-on-line": {
+      "version": "3.0.12",
+      "resolved": "https://registry.npmjs.org/turf-point-on-line/-/turf-point-on-line-3.0.12.tgz",
+      "integrity": "sha1-HYZjNU5wNy2xhj5iU+kEDEcSew8=",
+      "requires": {
+        "turf-bearing": "^3.0.12",
+        "turf-destination": "^3.0.12",
+        "turf-distance": "^3.0.12",
+        "turf-helpers": "^3.0.12"
+      }
+    },
+    "turf-point-on-surface": {
+      "version": "3.0.12",
+      "resolved": "https://registry.npmjs.org/turf-point-on-surface/-/turf-point-on-surface-3.0.12.tgz",
+      "integrity": "sha1-m+UFtrC6eOmFZQAd47OkJnEVJAo=",
+      "requires": {
+        "turf-center": "^3.0.12",
+        "turf-distance": "^3.0.12",
+        "turf-explode": "^3.0.12",
+        "turf-helpers": "^3.0.12",
+        "turf-inside": "^3.0.12"
+      }
+    },
+    "turf-random": {
+      "version": "3.0.12",
+      "resolved": "https://registry.npmjs.org/turf-random/-/turf-random-3.0.12.tgz",
+      "integrity": "sha1-NNuxQcPx6urhQk/Wxeq6H2+5seg=",
+      "requires": {
+        "geojson-random": "^0.2.2"
+      }
+    },
+    "turf-sample": {
+      "version": "3.0.12",
+      "resolved": "https://registry.npmjs.org/turf-sample/-/turf-sample-3.0.12.tgz",
+      "integrity": "sha1-eUn4YgYSBH4TFMHO2H6ZwUJGPNI=",
+      "requires": {
+        "turf-helpers": "^3.0.12"
+      }
+    },
+    "turf-simplify": {
+      "version": "3.0.12",
+      "resolved": "https://registry.npmjs.org/turf-simplify/-/turf-simplify-3.0.12.tgz",
+      "integrity": "sha1-heRDyLRqordSY4lETHOB2qKtGec=",
+      "requires": {
+        "simplify-js": "^1.2.1"
+      }
+    },
+    "turf-square": {
+      "version": "3.0.12",
+      "resolved": "https://registry.npmjs.org/turf-square/-/turf-square-3.0.12.tgz",
+      "integrity": "sha1-Gjix4PsF/+D8qkMYji83lCpRW2Q=",
+      "requires": {
+        "turf-distance": "^3.0.12",
+        "turf-helpers": "^3.0.12"
+      }
+    },
+    "turf-square-grid": {
+      "version": "3.0.12",
+      "resolved": "https://registry.npmjs.org/turf-square-grid/-/turf-square-grid-3.0.12.tgz",
+      "integrity": "sha1-PB2ArBRVbGgTtHi9oBJRLtS5Psg=",
+      "requires": {
+        "turf-distance": "^3.0.12",
+        "turf-helpers": "^3.0.12"
+      }
+    },
+    "turf-tag": {
+      "version": "3.0.12",
+      "resolved": "https://registry.npmjs.org/turf-tag/-/turf-tag-3.0.12.tgz",
+      "integrity": "sha1-IoT/8Oih6Son1Kx/10cbPEjd0ag=",
+      "requires": {
+        "turf-inside": "^3.0.12"
+      }
+    },
+    "turf-tesselate": {
+      "version": "3.0.12",
+      "resolved": "https://registry.npmjs.org/turf-tesselate/-/turf-tesselate-3.0.12.tgz",
+      "integrity": "sha1-QUdLe1s4ILzyc/tx4YlNjDzUDTU=",
+      "requires": {
+        "earcut": "^2.0.0",
+        "turf-helpers": "^3.0.12"
+      }
+    },
+    "turf-tin": {
+      "version": "3.0.12",
+      "resolved": "https://registry.npmjs.org/turf-tin/-/turf-tin-3.0.12.tgz",
+      "integrity": "sha1-tlNGRHY6zhyd8kHJWNI4SFUlc4U=",
+      "requires": {
+        "turf-helpers": "^3.0.12"
+      }
+    },
+    "turf-triangle-grid": {
+      "version": "3.0.12",
+      "resolved": "https://registry.npmjs.org/turf-triangle-grid/-/turf-triangle-grid-3.0.12.tgz",
+      "integrity": "sha1-gGR+V9r+CTRoeaKaGKDmKUrPEVk=",
+      "requires": {
+        "turf-distance": "^3.0.12",
+        "turf-helpers": "^3.0.12"
+      }
+    },
+    "turf-union": {
+      "version": "3.0.12",
+      "resolved": "https://registry.npmjs.org/turf-union/-/turf-union-3.0.12.tgz",
+      "integrity": "sha1-3+0OVUC4woVeSZTBRiHjpgyCnI4=",
+      "requires": {
+        "jsts": "1.1.2"
+      }
+    },
+    "turf-within": {
+      "version": "3.0.12",
+      "resolved": "https://registry.npmjs.org/turf-within/-/turf-within-3.0.12.tgz",
+      "integrity": "sha1-937q83cjhWG3+xM4526dEph0H5Q=",
+      "requires": {
+        "turf-helpers": "^3.0.12",
+        "turf-inside": "^3.0.12"
+      }
+    },
     "tweetnacl": {
       "version": "0.14.5",
       "resolved": "https://registry.npmjs.org/tweetnacl/-/tweetnacl-0.14.5.tgz",
       "integrity": "sha1-WuaBd/GS1EViadEIr6k/+HQ/T2Q="
     },
+    "two-product": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/two-product/-/two-product-1.0.2.tgz",
+      "integrity": "sha1-Z9ldSyV6kh4stL16+VEfkIhSLqo="
+    },
+    "two-sum": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/two-sum/-/two-sum-1.0.0.tgz",
+      "integrity": "sha1-MdPzIjnk9zHsqd+RVeKyl/AIq2Q="
+    },
     "type-check": {
       "version": "0.3.2",
       "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.3.2.tgz",
@@ -10176,6 +10778,11 @@
       "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.11.0.tgz",
       "integrity": "sha512-xY96SsN3NA461qIRKZ/+qox37YXPtSBswMGfiNptr+wrt6ds4HaMw23TP612fEyGekRE6LNRiLYr/aqbHXNedw=="
     },
+    "union-find": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/union-find/-/union-find-1.0.2.tgz",
+      "integrity": "sha1-KSusQV5q06iVNdI3AQ20pTYoTlg="
+    },
     "union-value": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.1.tgz",
@@ -10473,6 +11080,11 @@
       "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-6.1.0.tgz",
       "integrity": "sha512-qBIvFLGiBpLjfwmYAaHPXsn+ho5xZnGvyGvsarywGNc8VyQJUMHJ8OBKGGrPER0okBeMDaan4mNBlgBROxuI8w=="
     },
+    "wgs84": {
+      "version": "0.0.0",
+      "resolved": "https://registry.npmjs.org/wgs84/-/wgs84-0.0.0.tgz",
+      "integrity": "sha1-NP3FVZF7blfPKigu0ENxDASc3HY="
+    },
     "whatwg-encoding": {
       "version": "1.0.5",
       "resolved": "https://registry.npmjs.org/whatwg-encoding/-/whatwg-encoding-1.0.5.tgz",

package.json

@@ -46,6 +46,7 @@
     "passport-local": "1.0.0",
     "request": "2.88.2",
     "slug": "^3.3.5",
+    "turf": "^3.0.14",
     "underscore": "^1.11.0"
   },
   "devDependencies": {

src/models/TrackData.js

@@ -1,11 +1,14 @@
 const mongoose = require('mongoose');
 const uniqueValidator = require('mongoose-unique-validator');
+const turf = require('turf');
 
 const schema = new mongoose.Schema(
   {
     slug: { type: String, lowercase: true, unique: true },
     numEvents: { type: Number, default: 0 },
     recordedAt: { type: Date },
+    recordedUntil: { type: Date },
+    trackLength: { type: Number },
     points: [
       {
         date: String,
@@ -33,6 +36,8 @@ schema.pre('validate', function (next) {
   next();
 });
 
+schema.set('toJSON', { virtuals: true });
+
 class TrackData extends mongoose.Model {
   slugify() {
     this.slug = 'td-' + String((Math.random() * Math.pow(36, 6)) | 0).toString(36);
@@ -42,14 +47,16 @@ class TrackData extends mongoose.Model {
     return this.points.filter((p) => p.flag).length;
   }
 
-  getRecoredAt() {
+  getRecoredAt(findEnd = false) {
-    const firstPointWithDate = this.points.find((p) => p.date && p.time);
+    const pointsWithDate = this.points.filter((p) => p.date && p.time);
-    if (!firstPointWithDate) {
+
+    if (!pointsWithDate.length) {
       return null;
     }
 
-    const [day, month, year] = firstPointWithDate.date.split('.');
+    const point = pointsWithDate[findEnd ? pointsWithDate.length - 1 : 0];
-    const combinedString = `${year}-${month}-${day} ${firstPointWithDate.time}.000+2000`;
+    const [day, month, year] = point.date.split('.');
+    const combinedString = `${year}-${month}-${day} ${point.time}.000+2000`;
     const parsedDate = new Date(combinedString);
     if (isNaN(parsedDate.getDate())) {
       return null;
@@ -63,8 +70,54 @@ class TrackData extends mongoose.Model {
     trackData.points = points;
     trackData.numEvents = trackData.countEvents();
     trackData.recordedAt = trackData.getRecoredAt();
+    trackData.recordedUntil = trackData.getRecoredAt(true);
+    trackData.trackLength = trackData.measureTrackLength();
     return trackData;
   }
+
+  measureTrackLength() {
+    let totalLength = 0;
+    for (const [a, b] of pairwise(map(this.points, (p) => turf.point([p.longitude, p.latitude])))) {
+      const legLengthMeters = turf.distance(a, b) * 1000;
+      totalLength += legLengthMeters;
+    }
+    return totalLength;
+  }
+
+  get duration() {
+    if (this.recordedAt == null || this.recordedUntil == null) {
+      return null;
+    }
+
+    return (this.recordedUntil.getTime() - this.recordedAt.getTime()) / 1000;
+  }
+}
+
+function* pairwise(iter) {
+  let last;
+  let firstLoop = true;
+  for (const it of iter) {
+    if (firstLoop) {
+      firstLoop = false;
+    } else {
+      yield [last, it];
+    }
+    last = it;
+  }
+}
+
+function* enumerate(iter) {
+  let i = 0;
+  for (const it of iter) {
+    yield [i, it];
+    i++;
+  }
+}
+
+function* map(iter, fn) {
+  for (const [i, it] of enumerate(iter)) {
+    yield fn(it, i);
+  }
 }
 
 mongoose.model(TrackData, schema);