[l10n] Improve Russian (ru-RU) locale (#13871)

Signed-off-by: Vladislav Pavlik <[email protected]>
Co-authored-by: Lukas <[email protected]>

Author: Inv1x

docs/data/date-pickers/localization/data.json

@@ -203,7 +203,7 @@
     "languageTag": "ru-RU",
     "importName": "ruRU",
     "localeName": "Russian",
-    "missingKeysCount": 14,
+    "missingKeysCount": 0,
     "totalKeysCount": 50,
     "githubLink": "https://github.com/mui/mui-x/blob/master/packages/x-date-pickers/src/locales/ruRU.ts"
   },

packages/x-date-pickers/src/locales/ruRU.ts

@@ -26,10 +26,10 @@ const ruRUPickers: Partial<PickersLocaleText<any>> = {
   // DateRange labels
   start: 'Начало',
   end: 'Конец',
-  // startDate: 'Start date',
-  // startTime: 'Start time',
-  // endDate: 'End date',
-  // endTime: 'End time',
+  startDate: 'Начальная дата',
+  startTime: 'Начальное время',
+  endDate: 'Конечная дата',
+  endTime: 'Конечное время',
 
   // Action bar
   cancelButtonLabel: 'Отмена',
@@ -78,24 +78,24 @@ const ruRUPickers: Partial<PickersLocaleText<any>> = {
   fieldYearPlaceholder: (params) => 'Г'.repeat(params.digitAmount),
   fieldMonthPlaceholder: (params) => (params.contentType === 'letter' ? 'ММММ' : 'ММ'),
   fieldDayPlaceholder: () => 'ДД',
-  // fieldWeekDayPlaceholder: params => params.contentType === 'letter' ? 'EEEE' : 'EE',
+  fieldWeekDayPlaceholder: (params) => (params.contentType === 'letter' ? 'ДДДД' : 'ДД'),
   fieldHoursPlaceholder: () => 'чч',
   fieldMinutesPlaceholder: () => 'мм',
   fieldSecondsPlaceholder: () => 'сс',
   fieldMeridiemPlaceholder: () => '(д|п)п',
 
   // View names
-  // year: 'Year',
-  // month: 'Month',
-  // day: 'Day',
-  // weekDay: 'Week day',
-  // hours: 'Hours',
-  // minutes: 'Minutes',
-  // seconds: 'Seconds',
-  // meridiem: 'Meridiem',
+  year: 'Год',
+  month: 'Месяц',
+  day: 'День',
+  weekDay: 'День недели',
+  hours: 'Часы',
+  minutes: 'Минуты',
+  seconds: 'Секунды',
+  meridiem: 'Меридием',
 
   // Common
-  // empty: 'Empty',
+  empty: 'Пустой',
 };
 
 export const ruRU = getPickersLocalization(ruRUPickers);