codigo actual del servidor, con avances de joan

source_code/lib/screens/payments/bkash_screen.dart

@@ -0,0 +1,195 @@
+import 'package:active_ecommerce_seller_app/custom/toast_component.dart';
+import 'package:active_ecommerce_seller_app/my_theme.dart';
+import 'package:active_ecommerce_seller_app/repositories/payment_repository.dart';
+import 'package:flutter/material.dart';
+
+import 'package:toast/toast.dart';
+import 'dart:convert';
+
+import 'package:webview_flutter/webview_flutter.dart';
+
+import 'package:flutter_gen/gen_l10n/app_localizations.dart';
+
+class BkashScreen extends StatefulWidget {
+  double amount;
+  String payment_type;
+  String? payment_method_key;
+  String? package_id;
+
+  BkashScreen({Key? key,
+    this.amount = 0.00,
+    this.payment_type = "",
+    this.payment_method_key = "", this.package_id})
+      : super(key: key);
+
+  @override
+  _BkashScreenState createState() => _BkashScreenState();
+}
+
+class _BkashScreenState extends State<BkashScreen> {
+  int _combined_order_id = 0;
+  bool _order_init = false;
+  String? _initial_url = "";
+  bool _initial_url_fetched = false;
+
+
+  WebViewController _webViewController = WebViewController()
+    ..setJavaScriptMode(JavaScriptMode.unrestricted);
+  String? _token = "";
+  bool showLoading = false;
+
+  @override
+  void initState() {
+    // TODO: implement initState
+    super.initState();
+    _webViewController.setNavigationDelegate(
+    NavigationDelegate(
+    onProgress: (int progress) {
+    // Update loading bar.
+    },
+    onPageStarted: (String url) {},
+    onPageFinished: (String page) {
+    if (page.contains("/bkash/api/success")) {
+    getData();
+    } else if (page.contains("/bkash/api/fail")) {
+    ToastComponent.showDialog("Payment cancelled",
+    gravity: Toast.center, duration: Toast.lengthLong);
+    Navigator.of(context).pop();
+    return;
+    }
+    },
+    onWebResourceError: (WebResourceError error) {},
+    ),
+    );
+
+
+    // on cart payment need proper order id
+    getSetInitialUrl();
+    }
+
+
+  getSetInitialUrl() async {
+    var bkashUrlResponse = await PaymentRepository().getBkashBeginResponse(
+        widget.payment_type, _combined_order_id, widget.package_id,
+        widget.amount);
+
+    if (bkashUrlResponse.result == false) {
+      ToastComponent.showDialog(bkashUrlResponse.message!, gravity: Toast.center,
+          duration: Toast.lengthLong);
+      Navigator.of(context).pop();
+      return;
+    }
+    _token = bkashUrlResponse.token;
+
+    _initial_url = bkashUrlResponse.url;
+    _initial_url_fetched = true;
+
+    _webViewController.loadRequest(Uri.parse(_initial_url!));
+    setState(() {});
+
+    // print(_initial_url);
+    // print(_initial_url_fetched);
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      backgroundColor: Colors.white,
+      appBar: buildAppBar(context),
+      body: buildBody(),
+    );
+  }
+
+  buildBody() {
+    if (_initial_url_fetched == false) {
+      return Container(
+        child: Center(
+          child: Text(AppLocalizations
+              .of(context)!
+              .fetching_bkash_url),
+        ),
+      );
+    } else {
+      return SingleChildScrollView(
+        child: Container(
+          width: MediaQuery
+              .of(context)
+              .size
+              .width,
+          height: MediaQuery
+              .of(context)
+              .size
+              .height,
+          child: showLoading ? Column(
+            mainAxisAlignment: MainAxisAlignment.center,
+            children: [
+              SizedBox(width: 1, height: 1,),
+              CircularProgressIndicator(strokeWidth: 3,)
+            ],
+          ) : WebViewWidget(
+            controller: _webViewController,
+          ),
+        ),
+      );
+    }
+  }
+  onPaymentSuccess(payment_details) async {
+    showLoading = true;
+    setState(() {});
+    var bkashPaymentProcessResponse = await PaymentRepository()
+        .getBkashPaymentProcessResponse(
+      amount: widget.amount,
+      token: _token,
+      payment_type: widget.payment_type,
+      combined_order_id: _combined_order_id,
+      package_id: widget.package_id,
+      payment_id: payment_details['paymentID'],
+    );
+    ToastComponent.showDialog(bkashPaymentProcessResponse.message!,
+        duration: Toast.lengthLong, gravity: Toast.center);
+    Navigator.pop(context);
+  }
+
+  void getData() {
+    String? payment_details = '';
+    _webViewController
+        .runJavaScriptReturningResult("document.body.innerText")
+        .then((data) {
+      var responseJSON = jsonDecode(data as String);
+      if (responseJSON.runtimeType == String) {
+        responseJSON = jsonDecode(responseJSON);
+      }
+      print(data);
+      if (responseJSON["result"] == false) {
+        Toast.show(responseJSON["message"],
+            duration: Toast.lengthLong, gravity: Toast.center);
+        Navigator.pop(context);
+      } else if (responseJSON["result"] == true) {
+        payment_details = responseJSON['payment_details'];
+        onPaymentSuccess(responseJSON);
+      }
+    });
+  }
+
+  AppBar buildAppBar(BuildContext context) {
+    return AppBar(
+      backgroundColor: Colors.white,
+      centerTitle: true,
+      leading: Builder(
+        builder: (context) =>
+            IconButton(
+              icon: Icon(Icons.arrow_back, color: MyTheme.dark_grey),
+              onPressed: () => Navigator.of(context).pop(),
+            ),
+      ),
+      title: Text(
+        AppLocalizations
+            .of(context)!
+            .pay_with_bkash,
+        style: TextStyle(fontSize: 16, color: MyTheme.app_accent_color),
+      ),
+      elevation: 0.0,
+      titleSpacing: 0,
+    );
+  }
+}