Future sendEmail(datiForm) async {
    var body = Map<String, dynamic>();
    var htmlToSend = '';
    var extraInfo = '';
    var corpoEmail = Map<String, dynamic>();

    if (datiForm is DatiFormStore) {
      if (datiForm.problemaDaSegnalare == 'Prezzo Errato') {
        extraInfo = "questo è l'ID dell'articolo ${datiForm.productId}";
      }
      htmlToSend = '''
        <p style="font-size: 16px;">Form Compilato ${datiForm.email_object}</p>
        <p>L'utente ha trovato un problema per quanto riguarda ${datiForm.problemaDaSegnalare} riguardo il seguente store ${datiForm.storeID} </p>
        <p> messaggio: ${datiForm.message}</p>
        <p>${extraInfo}</p>
''';
      corpoEmail = datiForm.itemToJson(datiForm);
      body = {
        "bodyEmail": corpoEmail,
        "email_object": datiForm.email_object,
        "email": datiForm.email,
        "htmlToSend": htmlToSend
      };
    }

    if (datiForm is DatiFormProduct) {
      htmlToSend = '''
        <p style="font-size: 16px;">Form Compilato ${datiForm.email_object}</p>
        <p>L'utente ha trovato un problema per quanto riguarda ${datiForm.problemaDaSegnalare} riguardo il seguente prodotto ${datiForm.productId} </p>
        <p> messaggio: ${datiForm.message}</p>
''';
      corpoEmail = datiForm.itemToJson(datiForm);

      body = {
        "bodyEmail": corpoEmail,
        "email_object": datiForm.email_object,
        "email": datiForm.email,
        "htmlToSend": htmlToSend
      };
    }
    if (datiForm is DatiForm) {
      if (datiForm.haveStore) {
        extraInfo = '''
            <li>nome dell'azienda: ${datiForm.company_name}</li>
            <li>indirizzo dell'azienda: ${datiForm.companyAddress}</li>
        ''';
      }
      htmlToSend = '''
        <p style="font-size: 16px;">Form Compilato</p>
                <br />
                <ul>
                    <li>nome utente: ${datiForm.name}</li>
                    <li>email utente: ${datiForm.email}</li>
                    <li>città: ${datiForm.city}</li>
                    <li>messaggio dell'utente: ${datiForm.message}</li>
                    ${extraInfo}
                </ul>
      ''';

      corpoEmail = datiForm.itemToJson(datiForm);
      body = {
        "bodyEmail": corpoEmail,
        "email_object": datiForm.email_object,
        "email": datiForm.email,
        "htmlToSend": htmlToSend
      };
    }

    const url =
        'https://europe-west1-beonbuy-b3638.cloudfunctions.net/sendMail';
    const header = {
      'Accept': 'application/json',
      'Content-Type': 'application/json',
    };

    await http
        .post(url, body: json.encode(body), headers: header)
        .then((response) {
      print(response.body);
    });
  }

class DatiForm {
  var city,
      companyAddress,
      company_name,
      email,
      name,
      message,
      email_object = '';
  var haveStore, acceptedPolicy = false;
  DatiForm() {
    city = '';
    company_name = '';
    companyAddress = '';
    email = '';
    name = '';
    email_object = '';
    haveStore = false;
    acceptedPolicy = false;
  }
  Map<String, dynamic> itemToJson(DatiForm instance) {
    return <String, dynamic>{
      'City': instance.city,
      'CompanyName': instance.company_name,
      'CompanyAddress': instance.companyAddress,
      'Name': instance.name,
      'EmailObject': instance.email_object,
      'Message': instance.message,
    };
  }
}

class DatiFormStore {
  var email,
      message,
      problemaDaSegnalare,
      productId,
      storeID,
      email_object = '';

  DatiFormStore() {
    email = '';
    email_object = '';
    productId = '';
    storeID = '';
  }

  Map<String, dynamic> itemToJson(DatiFormStore instance) {
    return <String, dynamic>{
      'ProductID': instance.productId,
      'StoreID': instance.storeID,
      'EmailObject': instance.email_object,
      'Message': instance.message,
      'ProblemaDaSegnalare': instance.problemaDaSegnalare
    };
  }
}

class DatiFormProduct {
  var email, message, problemaDaSegnalare, productId, email_object = '';

  DatiFormProduct() {
    email = '';
    email_object = '';
    productId = '';
  }

  Map<String, dynamic> itemToJson(DatiFormProduct instance) {
    return <String, dynamic>{
      'ProductID': instance.productId,
      'EmailObject': instance.email_object,
      'Message': instance.message,
      'ProblemaDaSegnalare': instance.problemaDaSegnalare
    };
  }
}