Merge remote-tracking branch 'origin/HEAD'

app/src/main/java/com/vitorpamplona/amethyst/service/lnurl/LnWithdrawalUtil.kt

@@ -0,0 +1,29 @@
+package com.vitorpamplona.amethyst.service.lnurl
+
+import java.util.regex.Pattern
+
+object LnWithdrawalUtil {
+    private val withdrawalPattern = Pattern.compile(
+        "lnurl.*",
+        Pattern.CASE_INSENSITIVE
+    )
+
+    /**
+     * Finds LN withdrawal in the provided input string and returns it.
+     * For example for input = "aaa bbb lnbc1xxx ccc" it will return "lnbc1xxx"
+     * It will only return the first withdrawal found in the input.
+     *
+     * @return the invoice if it was found. null for null input or if no invoice is found
+     */
+    fun findWithdrawal(input: String?): String? {
+        if (input == null) {
+            return null
+        }
+        val matcher = withdrawalPattern.matcher(input)
+        return if (matcher.find()) {
+            matcher.group()
+        } else {
+            null
+        }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/ui/components/ClickableWithdrawal.kt

@@ -0,0 +1,27 @@
+package com.vitorpamplona.amethyst.ui.components
+
+import android.content.Intent
+import android.net.Uri
+import androidx.compose.foundation.text.ClickableText
+import androidx.compose.material.LocalTextStyle
+import androidx.compose.material.MaterialTheme
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.text.AnnotatedString
+import androidx.core.content.ContextCompat
+
+@Composable
+fun ClickableWithdrawal(withdrawalString: String) {
+    val context = LocalContext.current
+
+    ClickableText(
+        text = AnnotatedString("$withdrawalString "),
+        onClick = {
+            runCatching {
+                val intent = Intent(Intent.ACTION_VIEW, Uri.parse("lightning:$withdrawalString"))
+                ContextCompat.startActivity(context, intent, null)
+            }
+        },
+        style = LocalTextStyle.current.copy(color = MaterialTheme.colors.primary)
+    )
+}

app/src/main/java/com/vitorpamplona/amethyst/ui/components/RichTextViewer.kt

@@ -37,6 +37,7 @@ import com.halilibo.richtext.ui.resolveDefaults
 import com.vitorpamplona.amethyst.model.LocalCache
 import com.vitorpamplona.amethyst.model.checkForHashtagWithIcon
 import com.vitorpamplona.amethyst.service.lnurl.LnInvoiceUtil
+import com.vitorpamplona.amethyst.service.lnurl.LnWithdrawalUtil
 import com.vitorpamplona.amethyst.service.nip19.Nip19
 import com.vitorpamplona.amethyst.ui.note.NoteCompose
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
@@ -138,6 +139,7 @@ fun RichTextViewer(
                         if (canPreview) {
                             // Explicit URL
                             val lnInvoice = LnInvoiceUtil.findInvoice(word)
+                            val lnWithdrawal = LnWithdrawalUtil.findWithdrawal(word)
                             if (lnInvoice != null) {
                                 InvoicePreview(lnInvoice)
                             } else if (isValidURL(word)) {
@@ -149,6 +151,8 @@ fun RichTextViewer(
                                 } else {
                                     UrlPreview(word, "$word ")
                                 }
+                            } else if (lnWithdrawal != null) {
+                                ClickableWithdrawal(withdrawalString = lnWithdrawal)
                             } else if (Patterns.EMAIL_ADDRESS.matcher(word).matches()) {
                                 ClickableEmail(word)
                             } else if (Patterns.PHONE.matcher(word).matches() && word.length > 6) {