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Every completed order in La Casa del Bordadito is saved to Firestore and can be reviewed at any time from the order history screen. The history gives you a timestamped receipt for each purchase, including all items, their sizes, quantities, the grand total, and how the order was paid.

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Accessing your order history

Tap the history icon in the MainActivity toolbar. This launches HistorialActivity, which immediately queries Firestore for your orders.

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How orders are loaded

HistorialActivity.cargarHistorial() fetches all documents from the ordenes Firestore collection where the usuario field equals the current user’s email address: 
private fun cargarHistorial() {
    val user = FirebaseAuth.getInstance().currentUser ?: return
    val db = FirebaseFirestore.getInstance()

    db.collection("ordenes")
        .whereEqualTo("usuario", user.email)
        .get()
        .addOnSuccessListener { result ->
            listaOrdenes.clear()
            for (doc in result) {
                val orden = doc.toObject(Orden::class.java)
                orden.id = doc.id
                listaOrdenes.add(orden)
            }

            listaOrdenes.sortByDescending { it.fecha }
            adapter.notifyDataSetChanged()
        }
}
After loading, the list is sorted descending by the fecha timestamp so your most recent purchase always appears at the top.

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The Orden data model

Each document in the ordenes collection maps to the Orden data class: 
data class Orden(
    var id: String = "",
    var usuario: String = "",
    var total: String = "",
    var fecha: Long = 0,
    var items: List<CarritoItem> = emptyList(),
    var metodoPago: String = ""
) : Serializable
FieldTypeDescription
idStringFirestore document ID (assigned automatically)
usuarioStringAccount email used to look up this user’s orders
totalStringOrder grand total, e.g. "$185.00"
fechaLongSystem.currentTimeMillis() at checkout time
itemsList<CarritoItem>All products in the order
metodoPagoStringPayment description, e.g. "Efectivo" or "Visa **** 4242"

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CarritoItem fields

Each item in the items list is a CarritoItem: 
data class CarritoItem(
    var carritoItemId: String = "",
    var nombre: String = "",
    var tamano: String = "",
    var precio: Double = 0.0,
    var cantidad: Int = 1,
    var imagenUrl: String = ""
) : Serializable
FieldDescription
carritoItemIdProduct identifier
nombreProduct name
tamanoSize selected at the time of purchase
precioUnit price
cantidadQuantity ordered
imagenUrlFirebase Storage URL for the product thumbnail

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Viewing order details

Tap any row in HistorialActivity to open HistorialDetalleActivity. The order is passed as a serializable extra: 
val intent = Intent(this, HistorialDetalleActivity::class.java)
intent.putExtra("orden", orden)
startActivity(intent)
HistorialDetalleActivity.mostrarDatos() displays:
  • Folio: last 8 characters of the Firestore document ID, uppercased.
  • Date and time: formatted with SimpleDateFormat("dd/MM/yyyy HH:mm", Locale.getDefault()) applied to orden.fecha.
  • Payment method: the metodoPago string.
  • Total: the total string.
  • Product list: rendered in a read-only RecyclerView using CarritoAdapter(orden.items, isReadOnly = true).

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Sample Firestore order document

{
  "usuario": "ana@example.com",
  "total": "$245.00",
  "fecha": 1718300000000,
  "metodoPago": "Visa **** **** **** 4242",
  "items": [
    {
      "carritoItemId": "cafe_001",
      "nombre": "Café de olla",
      "tamano": "Grande",
      "precio": 65.0,
      "cantidad": 2,
      "imagenUrl": "https://firebasestorage.googleapis.com/..."
    },
    {
      "carritoItemId": "bordado_012",
      "nombre": "Patrón floral (kit)",
      "tamano": "Mediano",
      "precio": 115.0,
      "cantidad": 1,
      "imagenUrl": "https://firebasestorage.googleapis.com/..."
    }
  ]
}
The QR code generated on the confirmation screen at the end of checkout acts as your receipt. Take a screenshot of it before leaving that screen — the QR is not stored inside HistorialDetalleActivity and cannot be regenerated from the history view.

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