78 lines
2.3 KiB
Dart
78 lines
2.3 KiB
Dart
import 'dart:async';
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import 'package:guru_app/financial/igc/igc_manager.dart';
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import 'package:guru_app/financial/product/product_model.dart';
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import 'manifest.dart';
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/// Created by Haoyi on 2022/8/21
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typedef DetailsDistributor = Future<bool> Function(Details, TransactionMethod, String scene);
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typedef ManifestBuilder = Future<Manifest?> Function(TransactionIntent);
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class ManifestManager {
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ManifestManager._() {
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observableDeliveredManifest = deliveredManifestStream.stream.asBroadcastStream();
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}
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final StreamController<Manifest> deliveredManifestStream = StreamController();
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static final ManifestManager instance = ManifestManager._();
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late Stream<Manifest> observableDeliveredManifest;
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final Map<String, DetailsDistributor> distributors = {
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DetailsReservedType.igc: _deliverIgcDetails
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};
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final List<ManifestBuilder> builders = [];
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static Future<bool> _deliverIgcDetails(
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Details details, TransactionMethod method, String scene) async {
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if (details.amount > 0) {
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IgcManager.instance.accumulate(details.amount, method, scene: scene);
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return true;
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}
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return false;
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}
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void addDistributor(String type, DetailsDistributor distributor) {
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distributors[type] = distributor;
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}
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void addBuilder(ManifestBuilder builder) {
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builders.add(builder);
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}
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void addBuilders(List<ManifestBuilder> builders) {
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this.builders.addAll(builders);
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}
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Future<bool> deliver(Manifest manifest, TransactionMethod method) async {
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bool result = false;
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for (var details in manifest.details) {
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result |= await distributors[details.type]?.call(details, method, manifest.scene) ?? false;
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}
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deliveredManifestStream.add(manifest);
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return result;
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}
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Future<Manifest> createManifest(TransactionIntent intent) async {
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for (var builder in builders) {
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final manifest = await builder(intent);
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if (manifest != null) {
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return manifest;
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}
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}
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return Manifest.empty;
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}
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Manifest createIgcManifest(int igc, {String? category, String scene = ""}) {
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final details = <Details>[];
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details.add(Details.define(DetailsReservedType.igc, igc));
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final extras = <String, dynamic>{ExtraReservedField.scene: scene};
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return Manifest(category ?? DetailsReservedType.igc, extras: extras, details: details);
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}
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}
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