From d05ab59b47a25432672cfe5b7ba53f3cb1a6d6cb Mon Sep 17 00:00:00 2001
From: Evgeny Zinoviev <me@ch1p.io>
Date: Sun, 3 Jan 2021 21:41:50 +0300
Subject: initial commit

---
 app/static/app.js | 191 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 191 insertions(+)
 create mode 100644 app/static/app.js

(limited to 'app/static/app.js')

diff --git a/app/static/app.js b/app/static/app.js
new file mode 100644
index 0000000..bc4b89e
--- /dev/null
+++ b/app/static/app.js
@@ -0,0 +1,191 @@
+class Search {
+  constructor() {
+    this.searchDebounced = _.debounce((query) => {
+      if (query.length < 3)
+        return;
+      this.socket.emit('get_hints', {
+        id: this.updateRequestId(),
+        query
+      });
+    }, 150);
+
+    let field = document.getElementById('queryInput');
+    let btn = document.getElementById('querySubmit');
+
+    this.autoComplete = new Autocomplete(field, {
+      data: [],
+      maximumItems: 10,
+      onInput: (value) => {
+        this.searchDebounced(value);
+      },
+      onSelectItem: ({label}) => {
+        // console.log('selected:', label)
+      },
+      highlightClass: 'text-danger'
+    });
+
+    btn.addEventListener('click', this.onSubmit);
+    field.addEventListener('keydown', this.onInputKeyDown);
+
+    this.btn = btn;
+    this.field = field;
+
+    this.socket = io();
+    this.socket.on('hints', this.onHints);
+    this.socket.on('offers', this.onOffers)
+  }
+
+  updateRequestId() {
+    this.requestId = requestId();
+    return this.requestId;
+  }
+
+  onInputKeyDown = (e) => {
+    if (e.keyCode === 10 || e.keyCode === 13)
+      this.onSubmit();
+  }
+
+  onSubmit = (e) => {
+    if (this.isLocked())
+      return;
+
+    this.lockButton('Загрузка...');
+
+    gMaps.removeAllPoints();
+    this.socket.emit('get_offers', {
+      id: this.updateRequestId(),
+      query: this.field.value
+    });
+  }
+
+  onHints = (data) => {
+    if (data.id !== this.requestId)
+      return;
+
+    this.unlockButton();
+
+    if (data.error) {
+      console.warn(data.error);
+      return;
+    }
+
+    this.autoComplete.setData(data.response.map(item => {
+      return {label: item, value: ''};
+    }));
+    this.autoComplete.renderIfNeeded();
+  }
+
+  onOffers = (data) => {
+    if (data.id !== this.requestId)
+      return;
+
+    if (data.end) {
+      this.unlockButton();
+      return;
+    } else {
+      this.lockButton(data.pages > 1 ? `${data.page} из ${data.pages}` : null);
+    }
+
+    for (let offer of data.offers)
+      gMaps.addOffer(offer);
+  }
+
+  isLocked() {
+    return this.btn.classList.contains('disabled');
+  }
+
+  lockButton(text) {
+    if (text !== null)
+      this.btn.innerText = text;
+    this.btn.classList.add('disabled');
+  }
+
+  unlockButton() {
+    this.btn.classList.remove('disabled');
+    this.btn.innerText = 'Поиск';
+  }
+}
+
+
+class Maps {
+  constructor() {
+    /**
+     * @type {ymaps.Map}
+     */
+    this.map = null;
+    ymaps.ready(this.onInit);
+
+    this.places = {};
+  }
+
+  onInit = () => {
+    this.map = new ymaps.Map("mapContainer", {
+      center: [59.94, 30.32],
+      zoom: 11
+    });
+    this.map.controls.remove('searchControl');
+  }
+
+  addPoint({geo, offersRef, hint, pharmacyName, pharmacyAddress, pharmacyPhone}) {
+    let mark = new ymaps.Placemark(geo, {
+      hintContent: hint,
+    }, {
+      preset: 'islands#dotIcon',
+      openEmptyBalloon: true,
+      iconColor: '#3caa3c'
+    });
+    mark.events.add('balloonopen', e => {
+      let lines = offersRef.map(offer => {
+        return `${offer.name} (${offer.price} руб.)`
+      });
+      let html = `<b>${pharmacyName}</b><br>`;
+      html += `${pharmacyAddress}<br>`;
+      html += `тел: ${pharmacyPhone}<br><br>`;
+      html += lines.join('\n');
+      mark.properties.set('balloonContent', html);
+    });
+    this.map.geoObjects.add(mark);
+    return mark;
+  }
+  
+  removeAllPoints() {
+    this.map.geoObjects.removeAll();
+  }
+
+  addOffer(offer) {
+    // console.log('[addOffer]', offer);
+    let hash = offer.pharmacy.hash;
+    if (hash in this.places)
+      this.places[hash].offers.push(offer);
+    else {
+      this.places[hash] = {
+        offers: [offer],
+      };
+      this.places[hash].mark = this.addPoint({
+        geo: offer.pharmacy.geo,
+        hint: offer.pharmacy.name,
+        pharmacyName: offer.pharmacy.name,
+        pharmacyAddress: offer.pharmacy.address,
+        pharmacyPhone: offer.pharmacy.phone,
+        offersRef: this.places[hash].offers
+      });
+    }
+  }
+}
+
+
+function requestId() {
+  return _.random(1, 99999999);
+}
+
+
+let gMaps, gSearch;
+
+window.addEventListener('DOMContentLoaded', function() {
+  gSearch = new Search();
+  gMaps = new Maps();
+
+   // document.getElementById('test').addEventListener('click', () => {
+   //   gMaps.addTestPoint();
+   // });
+});
\ No newline at end of file
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