import 'package:cdb_ui/api.dart';
import 'package:cdb_ui/pages/consume.dart';
import 'package:flutter/material.dart';
import 'package:intl/intl.dart';
import 'package:qr_bar_code/qr/qr.dart';

class TransactionPage extends StatelessWidget {
  final Transaction transaction;
  final Function? refresh;

  const TransactionPage(this.transaction, {this.refresh, super.key});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Column(
        children: [
          Text("UUID: ${transaction.uuid}"),
          QRCode(
            data: transaction.uuid,
            size: 22,
            semanticsLabel: "Transaction UUID",
          ),

          Text("${transaction.item} - ${transaction.variant}"),

          Text("Added: ${tsFormat(transaction.timestamp)}"),

          if (transaction.expired) const Text("Transaction is Expired!"),

          IconText(Icons.money, transaction.price.format(),
              color: Colors.green),

          IconText(Icons.store, transaction.origin!, color: Colors.blue),

          IconText(Icons.location_city, transaction.location!),

          if (transaction.note != null) Text(transaction.note!),

          if (transaction.consumed != null) ...[
            const Divider(),
            Text("Consumed on: ${tsFormat(transaction.consumed!.timestamp)}"),
            IconText(Icons.store, transaction.consumed!.destination,
                color: Colors.blue),
            IconText(Icons.money, transaction.consumed!.price.format(),
                color: Colors.green),
          ]

          // todo : chart with price history
        ],
      ),
      floatingActionButton: FloatingActionButton(
          onPressed: () {
            Navigator.of(context).pushReplacement(MaterialPageRoute(
              builder: (context) {
                return ConsumePage(transaction, refresh ?? () {});
              },
            ));
          },
          child: const Icon(Icons.receipt_long)),
    );
  }
}

class TransactionCard extends StatelessWidget {
  final Transaction t;
  final Function refresh;

  const TransactionCard(this.t, this.refresh, {super.key});

  @override
  Widget build(BuildContext context) {
    return InkWell(
      onTap: () {
        Navigator.of(context).push(MaterialPageRoute(
          builder: (context) {
            return ConsumePage(t, refresh);
          },
        ));
      },
      onLongPress: () {
        Navigator.of(context).push(MaterialPageRoute(
          builder: (context) {
            return TransactionPage(t);
          },
        ));
      },
      child: Card(
        color: t.expired ? Colors.red[100] : Colors.black,
        margin: const EdgeInsets.symmetric(vertical: 8, horizontal: 16),
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(10),
        ),
        elevation: 4,
        child: Padding(
          padding: const EdgeInsets.all(12),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                children: [
                  Row(
                    children: [
                      Text(
                        t.item,
                        style: const TextStyle(fontSize: 16),
                      ),
                      const SizedBox(
                        width: 4,
                      ),
                      Text(
                        t.variant,
                        style: TextStyle(fontSize: 14, color: Colors.grey[400]),
                      ),
                    ],
                  ),
                  Text(
                    tsFormat(t.timestamp),
                    style: TextStyle(fontSize: 14, color: Colors.grey[700]),
                  ),
                ],
              ),
              const SizedBox(
                height: 10,
              ),
              if ((t.note ?? "").isNotEmpty) ...[
                const SizedBox(height: 8),
                Text(t.note!),
                const SizedBox(
                  height: 10,
                )
              ],
              IconText(Icons.money,
                  "${t.price.value.toStringAsFixed(2)} ${t.price.currency}",
                  color: Colors.green),
              if (t.origin != null) ...[
                const SizedBox(height: 8),
                IconText(Icons.store, t.origin!, color: Colors.blue)
              ],
              if (t.location != null) ...[
                const SizedBox(
                  height: 8,
                ),
                IconText(Icons.location_city, t.location!)
              ]
            ],
          ),
        ),
      ),
    );
  }
}

String tsFormat(int ts) {
  DateTime dateTime = DateTime.fromMillisecondsSinceEpoch(ts * 1000);
  return DateFormat('yyyy-MM-dd HH:mm:ss').format(dateTime);
}

class IconText extends StatelessWidget {
  final IconData icon;
  final String text;
  final Color? color;

  const IconText(this.icon, this.text, {super.key, this.color});

  @override
  Widget build(BuildContext context) {
    return Row(
      children: [
        Icon(icon, size: 18, color: color),
        const SizedBox(width: 6),
        Text(
          text,
          style: const TextStyle(fontSize: 16, fontWeight: FontWeight.bold),
        ),
      ],
    );
  }
}