From a45848bde9d55f75f619ae1ebef94bd922264070 Mon Sep 17 00:00:00 2001
From: Mehmedalija Karisik <mehmedalija@appollo41.com>
Date: Fri, 21 Feb 2025 15:33:18 +0100
Subject: [PATCH] Implement deep link for article links

---
 app/src/main/AndroidManifest.xml                   | 14 ++++++++++++++
 .../android/navigation/PrimalAppNavigation.kt      |  5 +++++
 .../android/navigation/deeplinking/DeepLink.kt     |  1 +
 .../navigation/deeplinking/DeepLinkingHandler.kt   |  6 ++++++
 4 files changed, 26 insertions(+)

diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 968bd5cce..275d7a4ff 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -75,6 +75,20 @@
                     android:scheme="https" />
             </intent-filter>
 
+            <intent-filter
+                android:autoVerify="true"
+                android:label="Primal Article">
+                <action android:name="android.intent.action.VIEW" />
+
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+
+                <data
+                    android:host="primal.net"
+                    android:pathPrefix="/a/"
+                    android:scheme="https" />
+            </intent-filter>
+
             <intent-filter android:label="Wallet Connect">
                 <action android:name="android.intent.action.VIEW" />
 
diff --git a/app/src/main/kotlin/net/primal/android/navigation/PrimalAppNavigation.kt b/app/src/main/kotlin/net/primal/android/navigation/PrimalAppNavigation.kt
index 1a0692149..786c73237 100644
--- a/app/src/main/kotlin/net/primal/android/navigation/PrimalAppNavigation.kt
+++ b/app/src/main/kotlin/net/primal/android/navigation/PrimalAppNavigation.kt
@@ -448,6 +448,11 @@ fun SharedTransitionScope.PrimalAppNavigation() {
                             )
                         }
 
+                        is DeepLink.Article -> {
+                            navController.popBackStack()
+                            navController.navigateToArticleDetails(deepLink.naddr)
+                        }
+
                         null -> navController.navigateToHome()
                     }
                 }
diff --git a/app/src/main/kotlin/net/primal/android/navigation/deeplinking/DeepLink.kt b/app/src/main/kotlin/net/primal/android/navigation/deeplinking/DeepLink.kt
index 82f7a5180..10add9826 100644
--- a/app/src/main/kotlin/net/primal/android/navigation/deeplinking/DeepLink.kt
+++ b/app/src/main/kotlin/net/primal/android/navigation/deeplinking/DeepLink.kt
@@ -6,5 +6,6 @@ sealed class DeepLink {
     data class NostrWalletConnect(val nwc: net.primal.android.user.domain.NostrWalletConnect) : DeepLink()
     data class Profile(val pubkey: String) : DeepLink()
     data class Note(val noteId: String) : DeepLink()
+    data class Article(val naddr: String) : DeepLink()
     data class PrimalNWC(val primalWalletNwc: PrimalWalletNwc) : DeepLink()
 }
diff --git a/app/src/main/kotlin/net/primal/android/navigation/deeplinking/DeepLinkingHandler.kt b/app/src/main/kotlin/net/primal/android/navigation/deeplinking/DeepLinkingHandler.kt
index 2eaf17fc5..ef02d915e 100644
--- a/app/src/main/kotlin/net/primal/android/navigation/deeplinking/DeepLinkingHandler.kt
+++ b/app/src/main/kotlin/net/primal/android/navigation/deeplinking/DeepLinkingHandler.kt
@@ -8,6 +8,7 @@ import net.primal.android.user.domain.isNwcUrl
 import net.primal.android.user.domain.parseNWCUrl
 
 private val PRIMAL_NOTE_REGEX = Regex("https://.*primal.net/e/")
+private val PRIMAL_ARTICLE_REGEX = Regex("https://.*primal.net/a/")
 
 private const val NOSTR_WALLET_CONNECT_SCHEMA = "nostr+walletconnect://"
 private const val NOSTR_WALLET_CONNECT_ALT_SCHEMA = "nostrwalletconnect://"
@@ -22,6 +23,11 @@ fun String.parseDeepLinkOrNull(): DeepLink? =
             unknownNoteIdentifier.resolveNoteId()?.let { DeepLink.Note(it) }
         }
 
+        PRIMAL_ARTICLE_REGEX.containsMatchIn(this) -> {
+            val unknownArticleIdentifier = PRIMAL_ARTICLE_REGEX.replace(this, "")
+            unknownArticleIdentifier.let { DeepLink.Article(it) }
+        }
+
         isNostrWalletConnectSchemaAndUrl() ->
             runCatching {
                 DeepLink.NostrWalletConnect(nwc = this.parseNWCUrl())