chore: try to parse naive dates as UTC

umap/static/umap/js/modules/facets.js

@@ -1,5 +1,6 @@
 import { DomUtil, DomEvent, stamp } from '../../vendors/leaflet/leaflet-src.esm.js'
 import { translate } from './i18n.js'
+import * as Utils from './utils.js'
 
 export default class Facets {
   constructor(map) {
@@ -133,18 +134,15 @@ export default class Facets {
   }
 
   getParser(type) {
-    switch(type) {
+    switch (type) {
       case 'number':
         return parseFloat
       case 'datetime':
         return (v) => new Date(v)
       case 'date':
-        return (v) => new Date(new Date(v).toDateString()) // Without time
+        return Utils.parseNaiveDate
       default:
         return (v) => String(v || '')
-
     }
   }
-
-
 }

umap/static/umap/js/modules/utils.js

@@ -356,3 +356,9 @@ export function template(str, data) {
     return value
   })
 }
+
+export function parseNaiveDate(value) {
+    const naive = new Date(value)
+    // Let's pretend naive date are UTC, and remove time…
+    return new Date(Date.UTC(naive.getFullYear(), naive.getMonth(), naive.getDate()))
+}

umap/static/umap/js/umap.features.js

@@ -504,7 +504,6 @@ U.FeatureMixin = {
         case 'number':
           min = parser(min)
           max = parser(max)
-          value = parser(value)
           if (!isNaN(min) && !isNaN(value) && min > value) return false
           if (!isNaN(max) && !isNaN(value) && max < value) return false
           break

umap/static/umap/unittests/utils.js

@@ -590,4 +590,21 @@ describe('Utils', function () {
       assert.deepEqual(getImpactsFromSchema(['foo', 'bar', 'baz'], schema), ['A', 'B'])
     })
   })
+  describe('parseNaiveDate', () => {
+    it('should parse a date', () => {
+      assert.equal(Utils.parseNaiveDate("2024/03/04").toISOString(), "2024-03-04T00:00:00.000Z")
+    })
+    it('should parse a datetime', () => {
+      assert.equal(Utils.parseNaiveDate("2024/03/04 12:13:14").toISOString(), "2024-03-04T00:00:00.000Z")
+    })
+    it('should parse an iso datetime', () => {
+      assert.equal(Utils.parseNaiveDate("2024-03-04T00:00:00.000Z").toISOString(), "2024-03-04T00:00:00.000Z")
+    })
+    it('should parse a GMT time', () => {
+      assert.equal(Utils.parseNaiveDate("04 Mar 2024 00:12:00 GMT").toISOString(), "2024-03-04T00:00:00.000Z")
+    })
+    it('should parse a GMT time with explicit timezone', () => {
+      assert.equal(Utils.parseNaiveDate("Thu, 04 Mar 2024 00:00:00 GMT+0300").toISOString(), "2024-03-03T00:00:00.000Z")
+    })
+  })
 })

umap/tests/integration/test_facets_browser.py

@@ -59,7 +59,7 @@ DATALAYER_DATA2 = {
                 "mytype": "odd",
                 "name": "Point 3",
                 "mynumber": 14,
-                "mydate": "2024/04/04 10:19:17",
+                "mydate": "2024-04-04T10:19:17.000Z",
             },
             "geometry": {"type": "Point", "coordinates": [4.372559, 47.945786]},
         },