rename example

2026-06-01 03:09:19 +02:00
parent 7f3d14a764
commit b5473bfafc
59 changed files with 261 additions and 182 deletions
@@ -0,0 +1,46 @@
+package com.bitcointxoko.gudariwallet.util
+
+import org.json.JSONArray
+
+/**
+ * Stateless helpers for parsing LNURL-pay step-1 metadata fields.
+ * Shared between [com.bitcointxoko.gudariwallet.data.LNbitsWalletRepository]
+ * and [com.bitcointxoko.gudariwallet.ui.WalletViewModel] so neither duplicates
+ * the logic.
+ */
+object LnurlMetadataParser {
+
+    /**
+     * Extracts the `text/plain` description from a LNURL-pay metadata JSON string.
+     * The metadata field is a JSON array of [type, value] pairs, e.g.:
+     *   [["text/plain","Pay me"],["image/png;base64","..."]]
+     * Returns an empty string if the field is null, blank, or unparseable.
+     */
+    fun parseDescription(metadata: String?): String {
+        if (metadata.isNullOrBlank()) return ""
+        return runCatching {
+            val array = JSONArray(metadata)
+            (0 until array.length())
+                .map { array.getJSONArray(it) }
+                .firstOrNull { it.getString(0) == "text/plain" }
+                ?.getString(1) ?: ""
+        }.getOrDefault("")
+    }
+
+    /**
+     * Extracts the host portion of [callback] for display purposes.
+     * Returns an empty string if [callback] is null, blank, or not a valid URI.
+     */
+    fun extractDomain(callback: String?): String {
+        if (callback.isNullOrBlank()) return ""
+        return runCatching { java.net.URI(callback).host ?: "" }.getOrDefault("")
+    }
+}
+
+/**
+ * Returns the display label for a LNURL payment target.
+ * If [lnurl] is a Lightning Address (contains '@'), returns it as-is.
+ * Otherwise returns the [domain] of the LNURL endpoint.
+ */
+fun payingToLabel(lnurl: String, domain: String): String =
+    if ('@' in lnurl) lnurl else domain