mirror of
https://github.com/inventree/inventree-app.git
synced 2025-04-28 05:26:47 +00:00
Toot toot, it's the refactor tractor
- Introduces the concept of a "BarcodeHandler" - Re-uses most of the code - Custom handlers for barcode success / failure
This commit is contained in:
Oliver Walters
parent
e39cd4c009
commit
c15d3a6524
397
lib/barcode.dart
397
lib/barcode.dart
@ -3,10 +3,6 @@ import 'package:flutter/cupertino.dart';
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import 'package:flutter/material.dart';
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import 'package:font_awesome_flutter/font_awesome_flutter.dart';
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//import 'package:qr_utils/qr_utils.dart';
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//import 'package:flutter_barcode_scanner/flutter_barcode_scanner.dart';
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//import 'package:barcode_scan/barcode_scan.dart';
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import 'package:qr_code_scanner/qr_code_scanner.dart';
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import 'package:InvenTree/inventree/stock.dart';
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@ -22,94 +18,118 @@ import 'package:InvenTree/widget/stock_detail.dart';
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import 'dart:convert';
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class InvenTreeQRView extends StatefulWidget {
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class BarcodeHandler {
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/**
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* Class which "handles" a barcode, by communicating with the InvenTree server,
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* and handling match / unknown / error cases.
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*
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* Override functionality of this class to perform custom actions,
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* based on the response returned from the InvenTree server
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*/
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InvenTreeQRView({Key key}) : super(key: key);
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BarcodeHandler();
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@override
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State<StatefulWidget> createState() => _QRViewState();
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QRViewController _controller;
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BuildContext _context;
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Future<void> onBarcodeMatched(Map<String, dynamic> data) {
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// Called when the server "matches" a barcode
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// Override this function
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}
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Future<void> onBarcodeUnknown(Map<String, dynamic> data) {
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// Called when the server does not know about a barcode
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// Override this function
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}
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Future<void> onBarcodeUnhandled(Map<String, dynamic> data) {
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// Called when the server returns an unhandled response
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showErrorDialog(
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_context,
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"Response Data",
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data.toString(),
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error: "Unknown Response",
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onDismissed: () {
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_controller.resumeCamera();
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}
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);
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}
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Future<void> processBarcode(BuildContext context, QRViewController _controller, String barcode) {
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this._context = context;
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this._controller = _controller;
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print("Scanned barcode data: ${barcode}");
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showProgressDialog(context, "Scanning", "Sending barcode data to server");
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// Send barcode request to server
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InvenTreeAPI().post(
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"barcode/",
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body: {
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"barcode": barcode
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}
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).then((var response) {
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hideProgressDialog(context);
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if (response.statusCode != 200) {
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showErrorDialog(
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context,
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"Status Code: ${response.statusCode}",
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"${response.body
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.toString()
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.split('\n')
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.first}",
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onDismissed: () {
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_controller.resumeCamera();
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},
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error: "Server Error",
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icon: FontAwesomeIcons.server,
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);
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return;
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}
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// Decode the response
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final Map<String, dynamic> data = json.decode(response.body);
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if (data.containsKey('error')) {
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onBarcodeUnknown(data);
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} else if (data.containsKey('success')) {
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onBarcodeMatched(data);
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} else {
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onBarcodeUnhandled(data);
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}
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}).timeout(
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Duration(seconds: 5)
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).catchError((error) {
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hideProgressDialog(context);
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showErrorDialog(
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context,
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"Error",
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error.toString(),
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onDismissed: () {
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_controller.resumeCamera();
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}
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);
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return;
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});
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}
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}
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class _QRViewState extends State<InvenTreeQRView> {
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class BarcodeScanHandler extends BarcodeHandler {
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/**
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* Class for general barcode scanning.
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* Scan *any* barcode without context, and then redirect app to correct view
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*/
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QRViewController _controller;
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BuildContext context;
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_QRViewState() : super();
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final GlobalKey qrKey = GlobalKey(debugLabel: 'QR');
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// Callback when the server repsonds with a match for the barcode
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Future<void> onBarcodeMatched(Map<String, dynamic> response) {
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int pk;
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print("Handle barcode:");
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print(response);
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// A stocklocation has been passed?
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if (response.containsKey('stocklocation')) {
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pk = response['stocklocation']['pk'] as int ?? null;
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if (pk != null) {
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InvenTreeStockLocation().get(context, pk).then((var loc) {
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if (loc is InvenTreeStockLocation) {
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Navigator.of(context).pop();
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Navigator.push(context, MaterialPageRoute(builder: (context) => LocationDisplayWidget(loc)));
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}
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});
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} else {
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// TODO - Show an error here!
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}
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} else if (response.containsKey('stockitem')) {
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pk = response['stockitem']['pk'] as int ?? null;
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if (pk != null) {
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InvenTreeStockItem().get(context, pk).then((var item) {
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Navigator.of(context).pop();
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Navigator.push(context, MaterialPageRoute(builder: (context) => StockDetailWidget(item)));
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});
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} else {
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// TODO - Show an error here!
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}
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} else if (response.containsKey('part')) {
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pk = response['part']['pk'] as int ?? null;
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if (pk != null) {
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InvenTreePart().get(context, pk).then((var part) {
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Navigator.of(context).pop();
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Navigator.push(context, MaterialPageRoute(builder: (context) => PartDetailWidget(part)));
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});
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} else {
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// TODO - Show an error here!
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}
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} else {
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showDialog(
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context: context,
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child: SimpleDialog(
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title: Text("Unknown response"),
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children: <Widget>[
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ListTile(
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title: Text("Response data"),
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subtitle: Text(response.toString()),
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)
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],
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)
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);
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}
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}
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// Callback when the server responds with no match for the barcode
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Future<void> onBarcodeUnknown(Map<String, dynamic> response) {
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@override
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Future<void> onBarcodeUnknown(Map<String, dynamic> data) {
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showErrorDialog(
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context,
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response['error'] ?? '',
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response['plugin'] ?? 'No barcode plugin information',
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_context,
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data['error'] ?? '',
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data['plugin'] ?? 'No barcode plugin information',
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error: "Barcode Error",
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icon: FontAwesomeIcons.barcode,
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onDismissed: () {
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@ -118,83 +138,168 @@ class _QRViewState extends State<InvenTreeQRView> {
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);
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}
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// Callback when the server responds with an unhandled response
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Future<void> onBarcodeUnhandled(Map<String, dynamic> response) {
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@override
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Future<void> onBarcodeMatched(Map<String, dynamic> data) {
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int pk;
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print("Handle barcode:");
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print(data);
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// A stocklocation has been passed?
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if (data.containsKey('stocklocation')) {
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pk = data['stocklocation']['pk'] as int ?? null;
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if (pk != null) {
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InvenTreeStockLocation().get(_context, pk).then((var loc) {
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if (loc is InvenTreeStockLocation) {
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Navigator.of(_context).pop();
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Navigator.push(_context, MaterialPageRoute(builder: (context) => LocationDisplayWidget(loc)));
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}
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});
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} else {
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// TODO - Show an error here!
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}
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} else if (data.containsKey('stockitem')) {
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pk = data['stockitem']['pk'] as int ?? null;
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if (pk != null) {
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InvenTreeStockItem().get(_context, pk).then((var item) {
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Navigator.of(_context).pop();
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Navigator.push(_context, MaterialPageRoute(builder: (context) => StockDetailWidget(item)));
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});
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} else {
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// TODO - Show an error here!
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}
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} else if (data.containsKey('part')) {
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pk = data['part']['pk'] as int ?? null;
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if (pk != null) {
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InvenTreePart().get(_context, pk).then((var part) {
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Navigator.of(_context).pop();
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Navigator.push(_context, MaterialPageRoute(builder: (context) => PartDetailWidget(part)));
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});
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} else {
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// TODO - Show an error here!
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}
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} else {
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showDialog(
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context: _context,
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child: SimpleDialog(
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title: Text("Unknown response"),
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children: <Widget>[
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ListTile(
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title: Text("Response data"),
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subtitle: Text(data.toString()),
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)
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],
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)
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);
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}
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}
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}
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class StockItemBarcodeAssignmentHandler extends BarcodeHandler {
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/**
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* Barcode handler for assigning a new barcode to a stock item
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*/
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final InvenTreeStockItem item;
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StockItemBarcodeAssignmentHandler(this.item);
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@override
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Future<void> onBarcodeMatched(Map<String, dynamic> data) {
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// If the barcode is known, we can't asisgn it to the stock item!
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showErrorDialog(
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context,
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"Response Data",
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response.toString(),
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error: "Unknown Response",
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onDismissed: () {
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_context,
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"Barcode in Use",
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"Barcode is already known",
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onDismissed: () {
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_controller.resumeCamera();
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}
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}
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);
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}
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Future<void> processBarcode(String barcode) async {
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if (barcode == null || barcode.isEmpty) {
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return;
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}
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@override
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Future<void> onBarcodeUnknown(Map<String, dynamic> data) {
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// If the barcode is unknown, we *can* assign it to the stock item!
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print("Scanned: ${barcode}");
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showProgressDialog(context, "Querying server", "Sending barcode data to server");
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InvenTreeAPI().post("barcode/", body: {"barcode": barcode}).then((var response) {
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hideProgressDialog(context);
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print("Response:");
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print(response.body);
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if (response.statusCode != 200) {
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showErrorDialog(
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context,
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"Status Code: ${response.statusCode}",
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"${response.body.toString().split('\n').first}",
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onDismissed: () {
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_controller.resumeCamera();
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},
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error: "Server Error",
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icon: FontAwesomeIcons.server,
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);
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return;
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}
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// Decode the response
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final Map<String, dynamic> body = json.decode(response.body);
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// "Error" contained in response
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if (body.containsKey('error')) {
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onBarcodeUnknown(body);
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} else if (body.containsKey('success')) {
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onBarcodeMatched(body);
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} else {
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onBarcodeUnhandled(body);
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}
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}).timeout(
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Duration(seconds: 5)
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).catchError((error) {
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hideProgressDialog(context);
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if (!data.containsKey("hash")) {
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showErrorDialog(
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context,
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"Error",
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error.toString(),
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_context,
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"Missing Data",
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"Missing hash data from server",
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onDismissed: () {
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_controller.resumeCamera();
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}
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);
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return;
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});
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} else {
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// Send the 'hash' code as the UID for the stock item
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item.update(
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_context,
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values: {
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"uid": data['hash'],
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}
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).then((result) {
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if (result) {
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showInfoDialog(
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_context,
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"Barcode Set",
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"Barcode assigned to stock item",
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onDismissed: () {
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_controller.dispose();
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Navigator.of(_context).pop();
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}
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);
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} else {
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showErrorDialog(
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_context,
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"Server Error",
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"Could not assign barcode",
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onDismissed: () {
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_controller.resumeCamera();
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}
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);
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}
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});
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}
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}
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}
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class InvenTreeQRView extends StatefulWidget {
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final BarcodeHandler _handler;
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InvenTreeQRView(this._handler, {Key key}) : super(key: key);
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@override
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State<StatefulWidget> createState() => _QRViewState(_handler);
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}
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class _QRViewState extends State<InvenTreeQRView> {
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QRViewController _controller;
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final BarcodeHandler _handler;
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BuildContext context;
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_QRViewState(this._handler) : super();
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final GlobalKey qrKey = GlobalKey(debugLabel: 'QR');
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void _onViewCreated(QRViewController controller) {
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_controller = controller;
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controller.scannedDataStream.listen((scandata) {
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_controller?.pauseCamera();
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processBarcode(scandata);
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_handler.processBarcode(context, _controller, scandata);
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});
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}
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@ -236,7 +341,7 @@ class _QRViewState extends State<InvenTreeQRView> {
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Future<void> scanQrCode(BuildContext context) async {
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Navigator.push(context, MaterialPageRoute(builder: (context) => InvenTreeQRView()));
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Navigator.push(context, MaterialPageRoute(builder: (context) => InvenTreeQRView(BarcodeScanHandler())));
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return;
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}
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@ -168,6 +168,8 @@ class InvenTreeStockItem extends InvenTreeModel {
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return false;
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}
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String get uid => jsondata['uid'] ?? '';
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int get partId => jsondata['part'] ?? -1;
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int get trackingItemCount => jsondata['tracking_items'] as int ?? 0;
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@ -9,6 +9,28 @@ void showMessage(BuildContext context, String message) {
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));
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}
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Future<void> showInfoDialog(BuildContext context, String title, String description, {IconData icon = FontAwesomeIcons.info, String info = "Info", Function onDismissed}) async {
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showDialog(
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context: context,
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child: SimpleDialog(
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title: ListTile(
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title: Text(info),
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leading: FaIcon(icon),
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),
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children: <Widget>[
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ListTile(
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title: Text(title),
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subtitle: Text(description)
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)
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]
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)
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).then((value) {
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if (onDismissed != null) {
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onDismissed();
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}
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});
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}
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Future<void> showErrorDialog(BuildContext context, String title, String description, {IconData icon = FontAwesomeIcons.exclamationCircle, String error = "Error", Function onDismissed}) async {
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showDialog(
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context: context,
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@ -1,5 +1,6 @@
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import 'package:InvenTree/barcode.dart';
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import 'package:InvenTree/inventree/stock.dart';
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import 'package:InvenTree/inventree/part.dart';
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import 'package:InvenTree/widget/dialogs.dart';
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@ -374,9 +375,22 @@ class _StockItemDisplayState extends RefreshableState<StockDetailWidget> {
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trailing: Text("${item.quantity}"),
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)
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);
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}
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tiles.add(
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ListTile(
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title: Text("Add Barcode"),
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leading: FaIcon(FontAwesomeIcons.qrcode),
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onTap: () {
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Navigator.push(
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context,
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MaterialPageRoute(builder: (context) => InvenTreeQRView(StockItemBarcodeAssignmentHandler(item)))
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);
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//Navigator.push(context, MaterialPageRoute(builder: (context) => AssignBarcodeToStockItemView(item)));
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},
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)
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);
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// Location information
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if ((item.locationId > 0) && (item.locationName != null) && (item.locationName.isNotEmpty)) {
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tiles.add(
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