From 29b568a63f21a89c5c17e88cc7d0427f40b8a36e Mon Sep 17 00:00:00 2001
From: Claudio Cambra <claudio.cambra@nextcloud.com>
Date: Tue, 8 Aug 2023 15:07:42 +0800
Subject: [PATCH] Vastly simplify NCInputDateField by using the
 DateFieldBackend

Signed-off-by: Claudio Cambra <claudio.cambra@nextcloud.com>
---
 src/gui/filedetails/NCInputDateField.qml | 98 ++++++------------------
 1 file changed, 22 insertions(+), 76 deletions(-)

diff --git a/src/gui/filedetails/NCInputDateField.qml b/src/gui/filedetails/NCInputDateField.qml
index 73a0a369d..63d979e35 100644
--- a/src/gui/filedetails/NCInputDateField.qml
+++ b/src/gui/filedetails/NCInputDateField.qml
@@ -12,91 +12,37 @@
  * for more details.
  */
 
+import QtQuick 2.15
+import QtQuick.Controls 2.15
+import com.nextcloud.desktopclient 1.0
+
 NCInputTextField {
     id: root
 
-    function updateText() {
-        text = _textFromValue(_value, root.locale);
-    }
-
-    // Taken from Kalendar 22.08
-    // https://invent.kde.org/pim/kalendar/-/blob/release/22.08/src/contents/ui/KalendarUtils/dateutils.js
-    function _parseDateString(dateString) {
-        function defaultParse() {
-            const defaultParsedDate = Date.fromLocaleDateString(root.locale, dateString, Locale.NarrowFormat);
-            // JS always generates date in system locale, eliminate timezone difference to UTC
-            const msecsSinceEpoch = defaultParsedDate.getTime() - (defaultParsedDate.getTimezoneOffset() * 60 * 1000);
-            return new Date(msecsSinceEpoch);
-        }
-
-        const dateStringDelimiterMatches = dateString.match(/\D/);
-        if(dateStringDelimiterMatches.length === 0) {
-            // Let the date method figure out this weirdness
-            return defaultParse();
-        }
-
-        const dateStringDelimiter = dateStringDelimiterMatches[0];
-
-        const localisedDateFormatSplit = root.locale.dateFormat(Locale.NarrowFormat).split(dateStringDelimiter);
-        const localisedDateDayPosition = localisedDateFormatSplit.findIndex((x) => /d/gi.test(x));
-        const localisedDateMonthPosition = localisedDateFormatSplit.findIndex((x) => /m/gi.test(x));
-        const localisedDateYearPosition = localisedDateFormatSplit.findIndex((x) => /y/gi.test(x));
-
-        let splitDateString = dateString.split(dateStringDelimiter);
-        let userProvidedYear = splitDateString[localisedDateYearPosition]
-
-        const dateNow = new Date();
-        const stringifiedCurrentYear = dateNow.getFullYear().toString();
-
-        // If we have any input weirdness, or if we have a fully-written year
-        // (e.g. 2022 instead of 22) then use default parse
-        if(splitDateString.length === 0 ||
-                splitDateString.length > 3 ||
-                userProvidedYear.length >= stringifiedCurrentYear.length) {
+    signal userAcceptedDate
 
-            return defaultParse();
-        }
-
-        let fullyWrittenYear = userProvidedYear.split("");
-        const digitsToAdd = stringifiedCurrentYear.length - fullyWrittenYear.length;
-        for(let i = 0; i < digitsToAdd; i++) {
-            fullyWrittenYear.splice(i, 0, stringifiedCurrentYear[i])
-        }
-        fullyWrittenYear = fullyWrittenYear.join("");
-
-        const fixedYearNum = Number(fullyWrittenYear);
-        const monthIndexNum = Number(splitDateString[localisedDateMonthPosition]) - 1;
-        const dayNum = Number(splitDateString[localisedDateDayPosition]);
-
-        console.log(dayNum, monthIndexNum, fixedYearNum);
-
-        // Modification: return date in UTC
-        return new Date(Date.UTC(fixedYearNum, monthIndexNum, dayNum));
-    }
-
-    function _textFromValue(value, locale) {
-        const dateFromValue = new Date(value * dayInMSecs);
-        return dateFromValue.toLocaleDateString(root.locale, Locale.NarrowFormat);
+    function updateText() {
+        text = backend.dateTimeString;
     }
 
-    function _valueFromText(text, locale) {
-        const dateFromText = _parseDateString(text);
-        return Math.floor(dateFromText.getTime() / dayInMSecs);
+    property DateFieldBackend backend: DateFieldBackend { 
+        id: backend
+        onDateTimeChanged: if (!root.activeFocus) root.updateText()
     }
 
-    property var date: new Date().getTime() * 1000 // QDateTime msecsFromEpoch
-    onDateChanged: updateText()
+    property alias date: backend.dateTime
+    property alias dateInMs: backend.dateTimeMsecs
+    property alias minimumDate: backend.minimumDateTime
+    property alias minimumDateMs: backend.minimumDateTimeMsecs
+    property alias maximumDate: backend.maximumDateTime
+    property alias maximumDateMs: backend.maximumDateTimeMsecs
 
-    property var minimumDate: 0
-    property var maximumDate: Number.MAX_SAFE_INTEGER
+    validInput: backend.validDateTime
+    text: backend.dateTimeString
+    onTextChanged: backend.dateTimeString = text
 
-    validInput: {
-        const value = valueFromText(text);
-        return value >= minimumDate && value <= maximumDate;
+    onAccepted: {
+        backend.dateTimeString = text;
+        root.userAcceptedDate();
     }
-
-    text: _textFromValue(_value, locale)
-    inputMethodHints: Qt.ImhDate
-
-    onAccepted: root.date = _valueFromText(text, locale);
 }
\ No newline at end of file
-- 
2.30.2