import 'dart:convert';

import 'package:flutter/cupertino.dart';
import 'package:flutter_redux/flutter_redux.dart';
import 'package:invoiceninja_flutter/data/models/invoice_model.dart';
import 'package:invoiceninja_flutter/data/web_client.dart';
import 'package:invoiceninja_flutter/redux/app/app_state.dart';

import 'dialogs.dart';

void loadTemplate({
  @required BuildContext context,
  @required String subject,
  @required String body,
  @required Function(String, String) onStart,
  @required Function(String, String) onComplete,
}) {
  final webClient = WebClient();
  final state = StoreProvider.of<AppState>(context).state;
  final credentials = state.credentials;
  final invoice = state.invoiceState.list.isEmpty
      ? InvoiceEntity(state: state)
      : state.invoiceState.map[state.invoiceState.list.first];
  final url = credentials.url + '/templates';
  const encoder = const Utf8Encoder();

  subject ??= '';
  body ??= '';

  final hase64Body =
      'data:text/html;base64,' + base64Encode(encoder.convert(body));
  onStart(subject, hase64Body);

  webClient
      .post(url, credentials.token,
          data: json.encode({
            'entity': 'invoice',
            'entity_id': '${invoice.id}',
            'subject': subject,
            'body': body
          }))
      .then((dynamic response) {
    subject = response['subject'] ?? '';
    body = base64Encode(encoder.convert(response['body'] ?? ''));
    onComplete(subject, body);
  }).catchError((dynamic error) {
    showErrorDialog(context: context, message: '$error');
    onComplete(subject, hase64Body);
  });
}