refactor(date-converter): improved ux and layout

src/tools/date-time-converter/date-time-converter.vue

@@ -1,44 +1,38 @@
 <template>
   <div>
-    <n-card>
-      <n-space justify="center">
-        <n-form-item label="Use current date-time ?" label-placement="left" :show-feedback="false">
-          <n-switch v-model:value="useCurrentDate" />
-        </n-form-item>
-      </n-space>
-      <n-form-item
-        :feedback="inputInvalid ? 'Invalid date for the current format' : ''"
-        :validation-status="inputInvalid ? 'error' : undefined"
-      >
-        <n-input-group style="flex-grow: 1">
-          <n-select
-            v-model:value="inputFormat"
-            style="width: 200px"
-            :options="formats.map(({ name }, i) => ({ label: name, value: i }))"
-            :disabled="useCurrentDate"
-          />
+    <n-form-item :show-label="false" v-bind="validation.attrs">
+      <n-input-group>
+        <n-input
+          v-model:value="inputDate"
+          :on-input="onDateInputChanged"
+          placeholder="Put you date string here..."
+          clearable
+          :input-props="{ 'data-test-id': 'date-time-converter-input' }"
+        />
 
-          <n-input
-            v-model:value="inputDate"
-            :on-input="onDateInputChanged"
-            :disabled="useCurrentDate"
-            placeholder="Your date string..."
-          />
-        </n-input-group>
-      </n-form-item>
-      <n-divider style="margin-top: 0" />
-      <div v-for="{ name, fromDate } in formats" :key="name" style="margin: 5px 0">
-        <n-input-group>
-          <n-input-group-label style="flex: 0 0 170px"> {{ name }}: </n-input-group-label>
-          <input-copyable :value="fromDate(baseDate)" />
-        </n-input-group>
-      </div>
-    </n-card>
+        <n-select
+          v-model:value="formatIndex"
+          style="flex: 0 0 170px"
+          :options="formats.map(({ name }, i) => ({ label: name, value: i }))"
+          data-test-id="date-time-converter-format-select"
+        />
+      </n-input-group>
+    </n-form-item>
+    <n-divider style="margin-top: 0" />
+    <div v-for="{ name, fromDate } in formats" :key="name" mt-1>
+      <n-input-group>
+        <n-input-group-label style="flex: 0 0 170px"> {{ name }}: </n-input-group-label>
+        <input-copyable
+          :value="formatDateUsingFormatter(fromDate, normalizedDate)"
+          placeholder="Invalid date..."
+          :input-props="{ 'data-test-id': name }"
+        />
+      </n-input-group>
+    </div>
   </div>
 </template>
 
 <script setup lang="ts">
-import { useRafFn } from '@vueuse/core';
 import {
   formatISO,
   formatISO9075,
@@ -47,95 +41,132 @@ import {
   fromUnixTime,
   getTime,
   getUnixTime,
-  isDate,
   parseISO,
   parseJSON,
+  isDate,
+  isValid,
 } from 'date-fns';
-import { ref } from 'vue';
-import InputCopyable from '../../components/InputCopyable.vue';
+import { withDefaultOnError } from '@/utils/defaults';
+import { useValidation } from '@/composable/validation';
+import type { DateFormat, ToDateMapper } from './date-time-converter.types';
+import {
+  isISO8601DateTimeString,
+  isISO9075DateString,
+  isRFC3339DateString,
+  isRFC7231DateString,
+  isTimestamp,
+  isUTCDateString,
+  isUnixTimestamp,
+  isMongoObjectId,
+} from './date-time-converter.models';
 
-const useCurrentDate = ref(true);
 const inputDate = ref('');
-const inputFormat = ref(6);
-const inputInvalid = ref(false);
-const baseDate = ref(new Date());
 
-useRafFn(() => {
-  if (useCurrentDate.value) {
-    baseDate.value = new Date();
+const toDate: ToDateMapper = (date) => new Date(date);
+
+function formatDateUsingFormatter(formatter: (date: Date) => string, date?: Date) {
+  if (!date || !validation.isValid) {
+    return '';
   }
-});
 
-function onDateInputChanged(value: string) {
-  const { toDate } = formats[inputFormat.value];
-  inputInvalid.value = false;
-
-  try {
-    const formatted: Date | string = toDate(value);
-
-    if (!isDate(formatted) || isNaN(formatted.getTime())) {
-      throw new Error('Invalid date');
-    }
-
-    baseDate.value = formatted;
-  } catch (_) {
-    inputInvalid.value = true;
-  }
+  return withDefaultOnError(() => formatter(date), '');
 }
 
-type Format = {
-  name: string;
-  fromDate: (date: Date) => string;
-  toDate: (value: string) => Date;
-};
-
-const toDate: Format['toDate'] = (date) => new Date(date);
-
-const formats: Format[] = [
+const formats: DateFormat[] = [
   {
     name: 'JS locale date string',
     fromDate: (date) => date.toString(),
     toDate,
+    formatMatcher: () => false,
   },
   {
     name: 'ISO 8601',
     fromDate: formatISO,
     toDate: parseISO,
+    formatMatcher: (date) => isISO8601DateTimeString(date),
   },
   {
     name: 'ISO 9075',
     fromDate: formatISO9075,
     toDate: parseISO,
+    formatMatcher: (date) => isISO9075DateString(date),
   },
   {
     name: 'RFC 3339',
     fromDate: formatRFC3339,
     toDate,
+    formatMatcher: (date) => isRFC3339DateString(date),
   },
   {
     name: 'RFC 7231',
     fromDate: formatRFC7231,
     toDate,
-  },
-  {
-    name: 'Timestamp',
-    fromDate: (date) => String(getTime(date)),
-    toDate: (ms) => parseJSON(+ms),
+    formatMatcher: (date) => isRFC7231DateString(date),
   },
   {
     name: 'Unix timestamp',
     fromDate: (date) => String(getUnixTime(date)),
     toDate: (sec) => fromUnixTime(+sec),
+    formatMatcher: (date) => isUnixTimestamp(date),
+  },
+  {
+    name: 'Timestamp',
+    fromDate: (date) => String(getTime(date)),
+    toDate: (ms) => parseJSON(+ms),
+    formatMatcher: (date) => isTimestamp(date),
   },
   {
     name: 'UTC format',
     fromDate: (date) => date.toUTCString(),
     toDate,
+    formatMatcher: (date) => isUTCDateString(date),
   },
   {
     name: 'Mongo ObjectID',
     fromDate: (date) => Math.floor(date.getTime() / 1000).toString(16) + '0000000000000000',
     toDate: (objectId) => new Date(parseInt(objectId.substring(0, 8), 16) * 1000),
+    formatMatcher: (date) => isMongoObjectId(date),
   },
 ];
+
+const formatIndex = ref(6);
+const now = useNow();
+
+const normalizedDate = computed(() => {
+  if (!inputDate.value) {
+    return now.value;
+  }
+
+  const { toDate } = formats[formatIndex.value];
+
+  try {
+    return toDate(inputDate.value);
+  } catch (_ignored) {
+    return undefined;
+  }
+});
+
+function onDateInputChanged(value: string) {
+  const matchingIndex = formats.findIndex(({ formatMatcher }) => formatMatcher(value));
+  if (matchingIndex !== -1) {
+    formatIndex.value = matchingIndex;
+  }
+}
+
+const validation = useValidation({
+  source: inputDate,
+  watch: [formatIndex],
+  rules: [
+    {
+      message: 'This date is invalid for this format',
+      validator: (value) =>
+        withDefaultOnError(() => {
+          if (value === '') return true;
+
+          const maybeDate = formats[formatIndex.value].toDate(value);
+          return isDate(maybeDate) && isValid(maybeDate);
+        }, false),
+    },
+  ],
+});
 </script>