chat-core/dev.hatang.chat.core.protocol/PaymentQR

PaymentQR

Finds the VietQR code of a payment card.

qr_image_url points at the gateway's /pay/{id}/qr.svg, which Android image loaders cannot decode. The code itself is just the EMVCo payload, so the SDK draws it natively: from the card's payload when it carries one, else from the public checkout JSON next to the SVG (GET /pay/{id} → qr.payload). Any other URL is fetched and used only when it is a raster image.

Properties

DEFAULT_TIMEOUT_MS

const val DEFAULT_TIMEOUT_MS: Long

Default per-request timeout.

Functions

checkoutUrl

fun checkoutUrl(imageUrl: String): String?

The checkout JSON for an image URL of the form …/pay/{id}/qr.svg (or qr.png), else null.

isRaster

fun isRaster(data: ByteArray): Boolean

The bytes start like a PNG, JPEG, GIF or WebP file.

resolve

suspend fun resolve(card: PaymentCard, client: OkHttpClient = defaultClient, timeoutMs: Long = DEFAULT_TIMEOUT_MS): PaymentQRSource

Where to draw card's QR from: its payload, the checkout's payload, or a raster image.