How to extract specific value from object stored in cloud firestore and get the sum of those values according to needed filters? - flutter

Question

I am having an issue in extracting specific value and querying with it. Please guide me on this.
Here is a data structure : (Using flutter/dart and cloudFirestore 3.1.18)
What I want to do is
extract the value of "amount" acccording to "isIncome" (boolean) from all the documents in "entries" collection and get the sum of those extracted amount.
to get the all the "amount" done in a day according to "entryLog" as well and show filtered data (according to date and income type) in listview builder as well.
This is the code I have return for getting all those entries in a stream
Stream<List<Entries>> streamAllEntries() {
var uid = FirebaseAuth.instance.currentUser.uid;
var stream = _db
.collection('entries')
.where("addedBy", isEqualTo: uid)
.orderBy('entryLog', descending: true)
.snapshots()
.map((event) =>
event.docs.map((e) => Entries.fromJson(e.data())).toList());
log(stream.toString());
return stream;
}
and this is my code for Showing DailyReports (here -- entries)
class DailyReports extends StatefulWidget {
const DailyReports({Key? key}) : super(key: key);
#override
State<DailyReports> createState() => _DailyReportsState();
}
class _DailyReportsState extends State<DailyReports> {
#override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.transparent,
body: getBody(),
);
}
Widget getBody() {
var entries = Provider.of<List<Entries>>(context);
var size = MediaQuery.of(context).size;
return Container(
margin: const EdgeInsets.only(bottom: 5),
child: Column(
children: [
//header card
SizedBox(
height: 140,
child: Card(
child: Padding(
padding: const EdgeInsets.only(
top: 10, bottom: 10, right: 10, left: 10),
child:
//header row
Column(
children: [
//title
Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
const Text(
"Transactions",
style: TextStyle(
fontWeight: FontWeight.bold, fontSize: 22),
),
Icon(Ionicons.search, color: ColorTheme().blackColor),
],
),
//day tabs
const SizedBox(height: 10),
Expanded(
child: Padding(
padding: const EdgeInsets.all(8.0),
child: ListView.builder(
itemCount: days.length,
scrollDirection: Axis.horizontal,
itemBuilder: (context, index) {
var day = days[index];
return weekTabs(size, index, day);
},
),
),
),
],
),
),
),
),
//income/expense card
incomeExpenseStatus(entries),
testbtn(),
// transaction summary
Expanded(child: transactionSection(entries)),
],
),
);
}
testbtn() {
return IconButton(
onPressed: () async {
await FirestoreService().addToAmountCollection(1000, true, "entry8");
},
icon: const Icon(Icons.mail, color: Colors.white));
}
Card incomeExpenseStatus(List<Entries> entries) {
return Card(
child: Padding(
padding: const EdgeInsets.all(10.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
const Text(
"Transaction Summary",
style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold),
),
Container(
padding: const EdgeInsets.symmetric(vertical: 10.0),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: [
const Text(
"Income",
style: TextStyle(),
),
const Text(
"Rs. 60000",
style: TextStyle(
color: Colors.green,
fontSize: 16,
fontWeight: FontWeight.bold),
),
Container(
width: 1,
height: 20,
color: Colors.black,
),
const Text(
"Expenses",
),
const Text(
"Rs. 100000",
style: TextStyle(
color: Colors.red,
fontSize: 16,
fontWeight: FontWeight.bold),
),
],
),
),
],
),
),
);
}
Widget transactionSection(List<Entries> entries) {
int? totalAmt;
return Card(
child: Column(
children: [
const SizedBox(height: 5),
Text(
"Transactions count : ${entries.length}",
style: const TextStyle(fontSize: 10, color: Colors.red),
),
Expanded(
child: Padding(
padding: const EdgeInsets.symmetric(horizontal: 0, vertical: 10),
child: ListView.builder(
physics: const BouncingScrollPhysics(),
itemCount: entries.length,
itemBuilder: (context, index) {
var transaction = entries[index];
DateTime d = DateTime.parse(transaction.entryLog);
return Card(
child: ListTile(
//*?How icon color works
onTap: () {
Navigator.push(
context,
MaterialPageRoute(
builder: ((context) => TransactionDetailScreen(
index: transaction)),
),
);
},
leading: CircleAvatar(
child: Center(
child: Icon(
getCategoryWiseIcon(
transaction.details!.category.toString()),
),
),
),
title: Text(transaction.details!.category.toString()),
subtitle: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(transaction.details!.remarks.toString()),
Text("$d"),
],
),
trailing: transaction.details!.isIncome == true
? Text("IN",
style:
TextStyle(color: ColorTheme().greenColor))
: Text("OUT",
style: TextStyle(
color: ColorTheme().primaryColor))),
);
}),
),
),
],
),
);
}
int activeDay = 1;
#override
void initState() {
activeDay = DateTimeExtractor().getDayAsInteger(activeDay);
super.initState();
}
Widget weekTabs(size, index, day) {
log('Active month:$activeDay');
return GestureDetector(
onTap: () {
setState(() {
activeDay = index;
});
},
child: Row(
children: [
Column(
children: [
Text(
day['label'],
style: TextStyle(
fontSize: 12,
color: activeDay == index
? ColorTheme().primaryColor
: ColorTheme().blackColor.withOpacity(0.8),
fontWeight: activeDay == index
? FontWeight.w500
: FontWeight.normal),
),
const SizedBox(height: 5),
Container(
width: 30,
height: 30,
decoration: BoxDecoration(
color: activeDay == index
? ColorTheme().primaryColor
: ColorTheme().whiteColor,
shape: BoxShape.circle,
border: Border.all(color: ColorTheme().primaryColor),
),
child: Center(
child: Text(
day['day'],
style: TextStyle(
fontSize: 12,
color: activeDay != index
? ColorTheme().primaryColor
: ColorTheme().whiteColor,
),
),
),
),
],
),
const SizedBox(width: 20),
],
),
);
}
}
This is my Entres model class
class Entries {
String? addedBy;
Details? details;
String? entryID;
dynamic entryLog;
String? gaadiID;
Entries({
this.addedBy = "",
this.details,
this.entryID = "",
this.entryLog,
this.gaadiID = "",
});
factory Entries.fromJson(Map<String, dynamic> json) =>
_$EntriesFromJson(json);
Map<String, dynamic> toJson() => _$EntriesToJson(this);
Entries _$EntriesFromJson(Map<String, dynamic> json) => Entries(
addedBy: json['addedBy'] as String? ?? "",
details: json['details'] == null
? null
: Details.fromJson(json['details'] as Map<String, dynamic>),
entryID: json['entryID'] as String? ?? "",
entryLog: json['entryLog'].toString(),
gaadiID: json['gaadiID'] as String? ?? "",
);
Map<String, dynamic> _$EntriesToJson(Entries instance) => <String, dynamic>{
'addedBy': instance.addedBy,
'details': instance.details,
'entryID': instance.entryID,
'entryLog': instance.entryLog.toString(),
'gaadiID': instance.gaadiID,
};
}
If you need any more info then please feel free to ask .