inventree-app/lib/widget/home.dart

import "package:inventree/app_colors.dart";
import "package:inventree/user_profile.dart";
import "package:flutter/cupertino.dart";
import "package:flutter/material.dart";

import "package:inventree/l10.dart";

import "package:font_awesome_flutter/font_awesome_flutter.dart";

import "package:inventree/barcode.dart";
import "package:inventree/api.dart";

import "package:inventree/settings/login.dart";

import "package:inventree/widget/category_display.dart";
import "package:inventree/widget/company_list.dart";
import "package:inventree/widget/location_display.dart";
import "package:inventree/widget/purchase_order_list.dart";
import "package:inventree/widget/search.dart";
import "package:inventree/widget/snacks.dart";
import "package:inventree/widget/spinner.dart";
import "package:inventree/widget/drawer.dart";

class InvenTreeHomePage extends StatefulWidget {

  const InvenTreeHomePage({Key? key}) : super(key: key);

  @override
  _InvenTreeHomePageState createState() => _InvenTreeHomePageState();
}

class _InvenTreeHomePageState extends State<InvenTreeHomePage> {

  _InvenTreeHomePageState() : super() {

    // Initially load the profile and attempt server connection
    _loadProfile();
  }

  final GlobalKey<_InvenTreeHomePageState> _homeKey = GlobalKey<_InvenTreeHomePageState>();

  // Selected user profile
  UserProfile? _profile;

  void _searchParts() {
    if (!InvenTreeAPI().checkConnection(context)) return;

    showSearch(
        context: context,
        delegate: PartSearchDelegate(context)
    );
  }

  void _searchStock() {
    if (!InvenTreeAPI().checkConnection(context)) return;

    showSearch(
        context: context,
        delegate: StockSearchDelegate(context)
    );
  }

  void _scan(BuildContext context) {
    if (!InvenTreeAPI().checkConnection(context)) return;

    scanQrCode(context);
  }

  void _showParts(BuildContext context) {
    if (!InvenTreeAPI().checkConnection(context)) return;

    Navigator.push(context, MaterialPageRoute(builder: (context) => CategoryDisplayWidget(null)));
  }

  void _showStarredParts(BuildContext context) {
    if (!InvenTreeAPI().checkConnection(context)) return;

    // TODO
    // Navigator.push(context, MaterialPageRoute(builder: (context) => StarredPartWidget()));
  }

  void _showStock(BuildContext context) {
    if (!InvenTreeAPI().checkConnection(context)) return;

    Navigator.push(context, MaterialPageRoute(builder: (context) => LocationDisplayWidget(null)));
  }

  void _showPurchaseOrders(BuildContext context) {
    if (!InvenTreeAPI().checkConnection(context)) return;

    Navigator.push(
      context,
      MaterialPageRoute(
        builder: (context) => PurchaseOrderListWidget(
        )
      )
    );
  }


  void _showSuppliers(BuildContext context) {
    if (!InvenTreeAPI().checkConnection(context)) return;

    Navigator.push(context, MaterialPageRoute(builder: (context) => CompanyListWidget(L10().suppliers, {"is_supplier": "true"})));
  }

  void _showManufacturers(BuildContext context) {
    if (!InvenTreeAPI().checkConnection(context)) return;

    Navigator.push(context, MaterialPageRoute(builder: (context) => CompanyListWidget(L10().manufacturers, {"is_manufacturer": "true"})));
  }

  void _showCustomers(BuildContext context) {
    if (!InvenTreeAPI().checkConnection(context)) return;

    Navigator.push(context, MaterialPageRoute(builder: (context) => CompanyListWidget(L10().customers, {"is_customer": "true"})));
  }

  void _selectProfile() {
    Navigator.push(
        context, MaterialPageRoute(builder: (context) => InvenTreeLoginSettingsWidget())
    ).then((context) {
      // Once we return
      _loadProfile();
    });
  }

  Future <void> _loadProfile() async {

    _profile = await UserProfileDBManager().getSelectedProfile();

    // A valid profile was loaded!
    if (_profile != null) {
      if (!InvenTreeAPI().isConnected() && !InvenTreeAPI().isConnecting()) {

        // Attempt server connection
        InvenTreeAPI().connectToServer().then((result) {
          setState(() {});
        });
      }
    }

    setState(() {});
  }

  ListTile _serverTile() {

    // No profile selected
    // Tap to select / create a profile
    if (_profile == null) {
      return ListTile(
        title: Text(L10().profileNotSelected),
        subtitle: Text(L10().profileTapToCreate),
        leading: FaIcon(FontAwesomeIcons.server),
        trailing: FaIcon(
          FontAwesomeIcons.user,
          color: COLOR_DANGER,
        ),
        onTap: () {
          _selectProfile();
        },
      );
    }

    // Profile is selected ...
    if (InvenTreeAPI().isConnecting()) {
      return ListTile(
        title: Text(L10().serverConnecting),
        subtitle: Text("${InvenTreeAPI().baseUrl}"),
        leading: FaIcon(FontAwesomeIcons.server),
        trailing: Spinner(
          icon: FontAwesomeIcons.spinner,
          color: COLOR_PROGRESS,
        ),
        onTap: () {
          _selectProfile();
        }
      );
    } else if (InvenTreeAPI().isConnected()) {
      return ListTile(
        title: Text(L10().serverConnected),
        subtitle: Text("${InvenTreeAPI().baseUrl}"),
        leading: FaIcon(FontAwesomeIcons.server),
        trailing: FaIcon(
          FontAwesomeIcons.checkCircle,
          color: COLOR_SUCCESS
        ),
        onTap: () {
          _selectProfile();
        },
      );
    } else {
      return ListTile(
        title: Text(L10().serverCouldNotConnect),
        subtitle: Text("${_profile!.server}"),
        leading: FaIcon(FontAwesomeIcons.server),
        trailing: FaIcon(
          FontAwesomeIcons.timesCircle,
          color: COLOR_DANGER,
        ),
        onTap: () {
          _selectProfile();
        },
      );
    }
  }

  Widget _iconButton(BuildContext context, String label, IconData icon, {Function()? callback, String role = "", String permission = ""}) {

    bool connected = InvenTreeAPI().isConnected();

    bool allowed = true;

    if (role.isNotEmpty || permission.isNotEmpty) {
      allowed = InvenTreeAPI().checkPermission(role, permission);
    }

    return GestureDetector(
      child: Card(
        margin: EdgeInsets.symmetric(
          vertical: 10,
          horizontal: 10
        ),
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            FaIcon(
              icon,
              color: connected && allowed ? COLOR_CLICK : Colors.grey,
            ),
            Divider(
              height: 10,
            ),
            Text(
              label,
            ),
          ]
        )
      ),
      onTap: () {

        if (!allowed) {
          showSnackIcon(
            L10().permissionRequired,
            icon: FontAwesomeIcons.exclamationCircle,
            success: false,
          );

          return;
        }

        if (callback != null) {
          callback();
        }

      },
    );
  }


  @override
  Widget build(BuildContext context) {

    return Scaffold(
      key: _homeKey,
      appBar: AppBar(
        title: Text(L10().appTitle),
      ),
      drawer: InvenTreeDrawer(context),
      body: ListView(
        physics: ClampingScrollPhysics(),
        shrinkWrap: true,
        children: [
          GridView.extent(
            maxCrossAxisExtent: 140,
            shrinkWrap: true,
            physics: ClampingScrollPhysics(),
            children: [
            _iconButton(
              context,
              L10().scanBarcode,
              FontAwesomeIcons.barcode,
              callback: () {
                _scan(context);
              }
            ),
            _iconButton(
              context,
              L10().search,
              FontAwesomeIcons.search,
              callback: () {
                // TODO: Launch "generic" search widget
              }
            ),
            _iconButton(
              context,
              L10().parts,
              FontAwesomeIcons.shapes,
              callback: () {
                _showParts(context);
              }
            ),

              // TODO - Re-add starred parts link
              /*
            Column(
              children: <Widget>[
                IconButton(
                  icon: FaIcon(FontAwesomeIcons.solidStar),
                  onPressed: () {

                  },
                ),
                Text("Starred Parts"),
              ]
            ),
             */

            _iconButton(
              context,
              L10().stock,
              FontAwesomeIcons.boxes,
              callback: () {
                _showStock(context);
              }
            ),
            _iconButton(
              context,
              L10().purchaseOrders,
              FontAwesomeIcons.shoppingCart,
              callback: () {
                _showPurchaseOrders(context);
              }
            ),
            _iconButton(
              context,
              L10().salesOrders,
              FontAwesomeIcons.truck,
            ),
            _iconButton(
              context,
              L10().suppliers,
              FontAwesomeIcons.building,
              callback: () {
                _showSuppliers(context);
              }
            ),
            _iconButton(
              context,
              L10().manufacturers,
              FontAwesomeIcons.industry,
              callback: () {
                _showManufacturers(context);
              }
            ),
            _iconButton(
              context,
              L10().customers,
              FontAwesomeIcons.userTie,
              callback: () {
                _showCustomers(context);
              }
            ),
              /*
        Spacer(),
        Row(
          mainAxisAlignment: MainAxisAlignment.spaceEvenly,
          children: <Widget>[
            Column(
              children: <Widget>[
                IconButton(
                  icon: new FaIcon(FontAwesomeIcons.tools),
                  tooltip: "Build",
                  onPressed: _unsupported,
                ),
                Text("Build"),
              ],
            ),
            Column(
              children: <Widget>[
                IconButton(
                  icon: new FaIcon(FontAwesomeIcons.shoppingCart),
                  tooltip: "Order",
                  onPressed: _unsupported,
                ),
                Text("Order"),
              ]
            ),
            Column(
              children: <Widget>[
                IconButton(
                  icon: new FaIcon(FontAwesomeIcons.truck),
                  tooltip: "Ship",
                  onPressed: _unsupported,
                ),
                Text("Ship"),
              ]
            )
          ],
        ),
        Spacer(),
        */
              /*
        Spacer(),
        Row(
          mainAxisAlignment: MainAxisAlignment.center,
          crossAxisAlignment: CrossAxisAlignment.center,
          children: <Widget>[
            Expanded(
              child: _serverTile(),
            ),
          ],
        ),
      ]),
       */
            ],
          )
        ]
      ),
    );
  }
}