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1 files changed, 140 insertions, 0 deletions

diff --git a/lib/shift.dart b/lib/shift.dart
new file mode 100644
index 0000000..382b39f
--- /dev/null
+++ b/lib/shift.dart
@@ -0,0 +1,140 @@
+import 'package:flutter/cupertino.dart';
+import 'package:flutter/material.dart';
+import 'package:in_date_utils/in_date_utils.dart' as DateUtilities;
+
+enum ShiftType {
+  Dagrit,
+  Avondrit,
+  Terugscannen,
+}
+
+class Shift {
+  DateTime start;
+  DateTime? end;
+  ShiftType type;
+  bool isActive = false;
+
+  Shift({this.end = null, required this.start, required this.type});
+
+  Widget getStatusIcon() {
+    if (end == null &&
+        start.isBefore(DateTime.now()) &&
+        !DateUtilities.DateUtils.isSameDay(start, DateTime.now())) {
+      return Icon(Icons.pending);
+    }
+    if (getIsActive() && end == null) {
+      return Padding(
+        child: CircularProgressIndicator(
+          strokeWidth: 1,
+          color: Colors.white,
+        ),
+        padding:
+            const EdgeInsets.only(top: 18, left: 10, right: 10, bottom: 18),
+      );
+    }
+    if (canStart()) {
+      return Icon(Icons.today);
+    }
+    if (!getIsActive() && end == null) {
+      return Icon(Icons.cabin);
+    }
+    if (end != null) {
+      return Icon(Icons.check);
+    }
+
+    return Icon(Icons.question_answer);
+  }
+
+  bool canStart() {
+    if (DateUtilities.DateUtils.isSameDay(DateTime.now(), start) &&
+        end == null &&
+        !isActive) {
+      return true;
+    }
+    return false;
+  }
+
+  bool getIsActive() {
+    return this.isActive;
+  }
+
+  bool isDone() {
+    return this.end != null;
+  }
+
+  DateTime expectedEndTime() {
+    switch (type) {
+      case ShiftType.Avondrit:
+        return start.add(Duration(hours: 5));
+      case ShiftType.Dagrit:
+        return start.add(Duration(hours: 8));
+      case ShiftType.Terugscannen:
+        return start.add(Duration(hours: 8));
+    }
+  }
+
+  Duration getElapsedSessionTime() {
+    if (getIsActive()) {
+      return DateTime.now().difference(start);
+    }
+    if (isDone()) {
+      return end?.difference(start) ?? Duration();
+    }
+
+    return expectedEndTime().difference(start);
+  }
+
+  double getMinutePayRate() {
+    return 0.22916666;
+  }
+
+  double getMoneyForActiveSession() {
+    if (getIsActive()) {
+      Duration elapsed = DateTime.now().difference(start);
+
+      return elapsed.inMinutes * getMinutePayRate();
+    }
+    return 0;
+  }
+
+  int getPercentage() {
+    if (getIsActive()) {
+      Duration totalMinutes = expectedEndTime().difference(start);
+      Duration elapsed = DateTime.now().difference(start);
+      int percentage = (elapsed.inMinutes ~/ totalMinutes.inMinutes);
+      if (percentage < 0) percentage = 0;
+      if (percentage > 100) percentage = 100;
+      return percentage;
+    }
+    return 0;
+  }
+
+  void setIsActive(bool active) {
+    isActive = active;
+
+    if (active) {
+      start = DateTime.now();
+    } else {
+      end = DateTime.now();
+    }
+  }
+
+  Color getStatusColor() {
+    if (end == null &&
+        start.isBefore(DateTime.now()) &&
+        !DateUtilities.DateUtils.isSameDay(start, DateTime.now())) {
+      return Colors.orange;
+    }
+    if (getIsActive() && end == null) {
+      return Colors.grey;
+    }
+    if (!getIsActive() && end == null) {
+      return Colors.red;
+    }
+    if (end != null) {
+      return Colors.green;
+    }
+
+    return Colors.pink;
+  }
+}