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PurchaseScreen: Allow the user to select the price

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We show a range of available prices. I'm hoping people will pay
according to how much they can afford.
This commit is contained in:
Vishesh Handa
2020-04-22 23:11:42 +02:00
parent d3aa78c39b
commit 74df0f2bbc
1 changed files with 49 additions and 8 deletions
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57
lib/screens/purchase_screen.dart
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@ -16,7 +16,8 @@ class PurchaseScreen extends StatefulWidget {
}
class _PurchaseScreenState extends State<PurchaseScreen> {
Offerings _offerings;
List<Offering> _offerings;
Offering _selectedOffering;
var _scaffoldKey = GlobalKey<ScaffoldState>();
@override
@ -27,19 +28,26 @@ class _PurchaseScreenState extends State<PurchaseScreen> {
Future<void> initPlatformState() async {
Purchases.setDebugLogsEnabled(true);
await Purchases.setup(environment['revenueCat']);
await Purchases.setup(
environment['revenueCat'],
appUserId: Settings.instance.pseudoId,
);
Offerings offerings;
try {
offerings = await Purchases.getOfferings();
} catch (e) {
if (e is PlatformException) {
var snackBar = SnackBar(content: Text(e.details));
var snackBar = SnackBar(content: Text(e.message));
_scaffoldKey.currentState
..removeCurrentSnackBar()
..showSnackBar(snackBar);
}
}
var offeringList = offerings.all.values.toList();
offeringList.sort((Offering a, Offering b) =>
a.monthly.product.price.compareTo(b.monthly.product.price));
print("Offerings: $offeringList");
// If the widget was removed from the tree while the asynchronous platform
// message was in flight, we want to discard the reply rather than calling
@ -47,7 +55,12 @@ class _PurchaseScreenState extends State<PurchaseScreen> {
if (!mounted) return;
setState(() {
_offerings = offerings;
_offerings = offeringList;
_selectedOffering = _offerings.isNotEmpty ? _offerings.first : null;
if (_offerings.length > 1) {
_selectedOffering = _offerings[1];
}
});
}
@ -67,9 +80,6 @@ class _PurchaseScreenState extends State<PurchaseScreen> {
var theme = Theme.of(context);
var textTheme = theme.textTheme;
var offering = _offerings.current;
var monthly = offering?.monthly;
// FIXME: This screen needs to be made way way more beautiful
// It's an extrememly important screen
@ -109,6 +119,36 @@ class _PurchaseScreenState extends State<PurchaseScreen> {
);
var titleStyle = textTheme.display2.copyWith(color: textTheme.title.color);
var slider = Slider(
min: _offerings.first.monthly.product.price,
max: _offerings.last.monthly.product.price + 0.50,
value: _selectedOffering.monthly.product.price,
onChanged: (double val) {
int i = -1;
for (i = 1; i < _offerings.length; i++) {
var prev = _offerings[i - 1].monthly.product;
var cur = _offerings[i].monthly.product;
if (prev.price < val && val <= cur.price) {
i--;
break;
}
}
if (val == _offerings.first.monthly.product.price) {
i = 0;
} else if (val >= _offerings.last.monthly.product.price) {
i = _offerings.length - 1;
}
if (i != -1) {
setState(() {
_selectedOffering = _offerings[i];
});
}
},
label: _selectedOffering.monthly.product.priceString,
divisions: _offerings.length,
);
Widget w = Column(
children: <Widget>[
@ -118,7 +158,8 @@ class _PurchaseScreenState extends State<PurchaseScreen> {
textAlign: TextAlign.center,
),
body,
PurchaseButton(monthly),
slider,
PurchaseButton(_selectedOffering?.monthly),
],
mainAxisAlignment: MainAxisAlignment.spaceAround,
);