import "package:flutter/material.dart";
import "package:flutter_speed_dial/flutter_speed_dial.dart";
import "package:flutter_tabler_icons/flutter_tabler_icons.dart";

import "package:inventree/app_colors.dart";
import "package:inventree/helpers.dart";
import "package:inventree/inventree/model.dart";
import "package:inventree/l10.dart";

import "package:inventree/inventree/company.dart";
import "package:inventree/inventree/part.dart";
import "package:inventree/inventree/purchase_order.dart";
import "package:inventree/inventree/stock.dart";

import "package:inventree/widget/progress.dart";
import "package:inventree/widget/refreshable_state.dart";
import "package:inventree/widget/snacks.dart";
import "package:inventree/widget/company/supplier_part_detail.dart";

/*
 * Widget for displaying detail view of a single PurchaseOrderLineItem
*/
class POLineDetailWidget extends StatefulWidget {
  const POLineDetailWidget(this.item, {Key? key}) : super(key: key);

  final InvenTreePOLineItem item;

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

/*
 * State for the POLineDetailWidget
 */
class _POLineDetailWidgetState extends RefreshableState<POLineDetailWidget> {
  _POLineDetailWidgetState();

  InvenTreeStockLocation? destination;

  @override
  String getAppBarTitle() => L10().lineItem;

  @override
  List<Widget> appBarActions(BuildContext context) {
    List<Widget> actions = [];

    if (widget.item.canEdit) {
      actions.add(IconButton(
        icon: Icon(TablerIcons.edit),
        onPressed: () {
          _editLineItem(context);
        },
      ));
    }

    return actions;
  }

  @override
  List<SpeedDialChild> actionButtons(BuildContext context) {
    List<SpeedDialChild> buttons = [];

    if (widget.item.canCreate) {
      // Receive items
      if (!widget.item.isComplete) {
        buttons.add(SpeedDialChild(
            child: Icon(TablerIcons.transition_right, color: Colors.blue),
            label: L10().receiveItem,
            onTap: () async {
              receiveLineItem(context);
            }));
      }
    }

    return buttons;
  }

  @override
  Future<void> request(BuildContext context) async {
    await widget.item.reload();

    if (widget.item.destinationId > 0) {
      InvenTreeStockLocation()
          .get(widget.item.destinationId)
          .then((InvenTreeModel? loc) {
        if (mounted) {
          if (loc != null && loc is InvenTreeStockLocation) {
            setState(() {
              destination = loc;
            });
          } else {
            setState(() {
              destination = null;
            });
          }
        }
      });
    } else {
      if (mounted) {
        setState(() {
          destination = null;
        });
      }
    }
  }

  // Callback to edit this line item
  Future<void> _editLineItem(BuildContext context) async {
    var fields = widget.item.formFields();

    widget.item.editForm(context, L10().editLineItem, fields: fields,
        onSuccess: (data) async {
      refresh(context);
      showSnackIcon(L10().lineItemUpdated, success: true);
    });
  }

  // Launch a form to 'receive' this line item
  Future<void> receiveLineItem(BuildContext context) async {
    widget.item.receive(context,
        onSuccess: () => {
              showSnackIcon(L10().receivedItem, success: true),
              refresh(context)
            });
  }

  @override
  List<Widget> getTiles(BuildContext context) {
    List<Widget> tiles = [];

    // Reference to the part
    tiles.add(ListTile(
      title: Text(L10().internalPart),
      subtitle: Text(widget.item.partName),
      leading: Icon(TablerIcons.box, color: COLOR_ACTION),
      trailing: api.getThumbnail(widget.item.partImage),
      onTap: () async {
        showLoadingOverlay();
        var part = await InvenTreePart().get(widget.item.partId);
        hideLoadingOverlay();

        if (part is InvenTreePart) {
          part.goToDetailPage(context);
        }
      },
    ));

    // Reference to the supplier part
    tiles.add(ListTile(
      title: Text(L10().supplierPart),
      subtitle: Text(widget.item.SKU),
      leading: Icon(TablerIcons.building, color: COLOR_ACTION),
      onTap: () async {
        showLoadingOverlay();
        var part =
            await InvenTreeSupplierPart().get(widget.item.supplierPartId);
        hideLoadingOverlay();

        if (part is InvenTreeSupplierPart) {
          Navigator.push(
              context,
              MaterialPageRoute(
                  builder: (context) => SupplierPartDetailWidget(part)));
        }
      },
    ));

    // Destination
    if (destination != null) {
      tiles.add(ListTile(
          title: Text(L10().destination),
          subtitle: Text(destination!.name),
          leading: Icon(TablerIcons.map_pin, color: COLOR_ACTION),
          onTap: () => {destination!.goToDetailPage(context)}));
    }

    // Received quantity
    tiles.add(ListTile(
      title: Text(L10().received),
      subtitle: ProgressBar(widget.item.progressRatio),
      trailing: Text(widget.item.progressString,
          style: TextStyle(
              color: widget.item.isComplete ? COLOR_SUCCESS : COLOR_WARNING)),
      leading: Icon(TablerIcons.progress),
    ));

    // Reference
    if (widget.item.reference.isNotEmpty) {
      tiles.add(ListTile(
        title: Text(L10().reference),
        subtitle: Text(widget.item.reference),
        leading: Icon(TablerIcons.hash),
      ));
    }

    // Pricing information
    tiles.add(ListTile(
      title: Text(L10().unitPrice),
      leading: Icon(TablerIcons.currency_dollar),
      trailing: Text(renderCurrency(
          widget.item.purchasePrice, widget.item.purchasePriceCurrency)),
    ));

    // Note
    if (widget.item.notes.isNotEmpty) {
      tiles.add(ListTile(
        title: Text(L10().notes),
        subtitle: Text(widget.item.notes),
        leading: Icon(TablerIcons.note),
      ));
    }

    // External link
    if (widget.item.link.isNotEmpty) {
      tiles.add(ListTile(
        title: Text(L10().link),
        subtitle: Text(widget.item.link),
        leading: Icon(TablerIcons.link, color: COLOR_ACTION),
        onTap: () async {
          await openLink(widget.item.link);
        },
      ));
    }

    return tiles;
  }
}