From 7cd468542e3e28c414030af7cabdd62cfcf073bd Mon Sep 17 00:00:00 2001
From: Artem Chepurnoy <artemchep@gmail.com>
Date: Wed, 27 Mar 2024 10:23:41 +0200
Subject: [PATCH] fix(Markdown): Do not crash the app if the link you've
 clicked could not be handled

---
 .../keyguard/ui/markdown/Markdown.kt          | 31 +++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/common/src/commonMain/kotlin/com/artemchep/keyguard/ui/markdown/Markdown.kt b/common/src/commonMain/kotlin/com/artemchep/keyguard/ui/markdown/Markdown.kt
index b97e96d..dc989a0 100644
--- a/common/src/commonMain/kotlin/com/artemchep/keyguard/ui/markdown/Markdown.kt
+++ b/common/src/commonMain/kotlin/com/artemchep/keyguard/ui/markdown/Markdown.kt
@@ -2,14 +2,22 @@ package com.artemchep.keyguard.ui.markdown
 
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberUpdatedState
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalUriHandler
+import com.artemchep.keyguard.common.model.ToastMessage
+import com.artemchep.keyguard.common.usecase.ShowMessage
 import com.halilibo.richtext.commonmark.Markdown
 import com.halilibo.richtext.markdown.BasicMarkdown
 import com.halilibo.richtext.markdown.node.AstNode
+import com.halilibo.richtext.ui.LinkClickHandler
 import com.halilibo.richtext.ui.RichTextStyle
 import com.halilibo.richtext.ui.material3.RichText
 import com.halilibo.richtext.ui.resolveDefaults
 import com.halilibo.richtext.ui.string.RichTextStringStyle
+import org.kodein.di.compose.rememberInstance
 
 @Composable
 fun MarkdownText(
@@ -20,6 +28,7 @@ fun MarkdownText(
     RichText(
         modifier = modifier,
         style = richTextStyle,
+        linkClickHandler = rememberGracefulLinkClickHandler(),
     ) {
         Markdown(markdown)
     }
@@ -34,11 +43,33 @@ fun MarkdownText(
     RichText(
         modifier = modifier,
         style = richTextStyle,
+        linkClickHandler = rememberGracefulLinkClickHandler(),
     ) {
         BasicMarkdown(markdown)
     }
 }
 
+@Composable
+private fun rememberGracefulLinkClickHandler(): LinkClickHandler {
+    val showMessage by rememberInstance<ShowMessage>()
+    val updatedUriHandler by rememberUpdatedState(LocalUriHandler.current)
+    return remember {
+        LinkClickHandler { uri ->
+            try {
+                updatedUriHandler.openUri(uri)
+            } catch (e: Exception) {
+                val title = e.message
+                    ?: "Could not open a URI"
+                val msg = ToastMessage(
+                    title = title,
+                    type = ToastMessage.Type.ERROR,
+                )
+                showMessage.copy(msg)
+            }
+        }
+    }
+}
+
 @Composable
 private fun getRichTextStyle(): RichTextStyle {
     return RichTextStyle().resolveDefaults().copy(