From 24e2a571999af56f7b4a612867912c088a98fa88 Mon Sep 17 00:00:00 2001
From: Suhas Dissanayake <suhasdissa@gmail.com>
Date: Sun, 29 Oct 2023 15:46:47 +0530
Subject: [PATCH] feat: highlight links/email/phone in sms threads

---
 .../java/com/bnyro/contacts/db/obj/SmsData.kt | 80 ++++++++++++++++++-
 .../contacts/ui/screens/SmsThreadScreen.kt    | 21 ++++-
 .../bnyro/contacts/util/TextFormatUtils.kt    | 17 ++++
 3 files changed, 115 insertions(+), 3 deletions(-)
 create mode 100644 app/src/main/java/com/bnyro/contacts/util/TextFormatUtils.kt

diff --git a/app/src/main/java/com/bnyro/contacts/db/obj/SmsData.kt b/app/src/main/java/com/bnyro/contacts/db/obj/SmsData.kt
index cd92d98d..640c7baf 100644
--- a/app/src/main/java/com/bnyro/contacts/db/obj/SmsData.kt
+++ b/app/src/main/java/com/bnyro/contacts/db/obj/SmsData.kt
@@ -1,8 +1,15 @@
 package com.bnyro.contacts.db.obj
 
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.AnnotatedString
+import androidx.compose.ui.text.SpanStyle
+import androidx.compose.ui.text.buildAnnotatedString
+import androidx.compose.ui.text.style.TextDecoration
 import androidx.room.ColumnInfo
 import androidx.room.Entity
 import androidx.room.PrimaryKey
+import com.bnyro.contacts.util.Format
+import com.bnyro.contacts.util.addKeywords
 
 @Entity(tableName = "localSms")
 data class SmsData(
@@ -12,4 +19,75 @@ data class SmsData(
     @ColumnInfo val timestamp: Long = 0,
     @ColumnInfo val threadId: Long = 0,
     @ColumnInfo val type: Int = 0
-)
+) {
+    val formatted: AnnotatedString
+        get() {
+            val text = body
+            val keywords = mutableListOf<Pair<Format, String>>().apply {
+                addKeywords(
+                    text,
+                    linkRegex,
+                    Format.LINK
+                )
+                addKeywords(
+                    text,
+                    emailRegex,
+                    Format.EMAIL
+                )
+                addKeywords(
+                    text,
+                    phoneRegex,
+                    Format.PHONE
+                )
+            }
+
+            return buildAnnotatedString {
+                append(text)
+                keywords.forEach { kw ->
+                    val (format, keyword) = kw
+                    val indexOf = text.indexOf(keyword)
+                    addStyle(
+                        style = SpanStyle(
+                            color = Color.Blue,
+                            textDecoration = when (format) {
+                                Format.LINK -> TextDecoration.Underline
+                                else -> TextDecoration.None
+                            }
+                        ),
+                        start = indexOf,
+                        end = indexOf + keyword.length
+                    )
+                    val link = when (format) {
+                        Format.LINK -> if (keyword.startsWith("http")) {
+                            keyword
+                        } else {
+                            "http://$keyword"
+                        }
+
+                        Format.PHONE ->
+                            "tel:$keyword"
+
+                        Format.EMAIL -> "mailto:$keyword"
+                    }
+                    addStringAnnotation(
+                        tag = format.name,
+                        annotation = link,
+                        start = indexOf,
+                        end = indexOf + keyword.length
+                    )
+                }
+            }
+        }
+
+    companion object {
+        private val linkRegex = Regex(
+            "(?<!@)(?<!\\S)((https?://)?[a-zA-Z0-9\\-]{2,}(\\.[a-zA-Z0-9]{2,})+)"
+        )
+        private val emailRegex = Regex(
+            "([A-Za-z0-9+_.-]+@(.+))"
+        )
+        private val phoneRegex = Regex(
+            "((\\+\\d{1,3}(\\s)?)?((\\(\\d{3}\\))|(\\d{3}))[-\\s]?\\d{3}[-\\s]?\\d{4})"
+        )
+    }
+}
diff --git a/app/src/main/java/com/bnyro/contacts/ui/screens/SmsThreadScreen.kt b/app/src/main/java/com/bnyro/contacts/ui/screens/SmsThreadScreen.kt
index 03fef23f..86550279 100644
--- a/app/src/main/java/com/bnyro/contacts/ui/screens/SmsThreadScreen.kt
+++ b/app/src/main/java/com/bnyro/contacts/ui/screens/SmsThreadScreen.kt
@@ -20,11 +20,12 @@ import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.foundation.lazy.items
 import androidx.compose.foundation.lazy.rememberLazyListState
 import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.text.ClickableText
+import androidx.compose.foundation.text.selection.SelectionContainer
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.ArrowBack
 import androidx.compose.material.icons.filled.Send
 import androidx.compose.material3.CardDefaults
-import androidx.compose.material3.CardElevation
 import androidx.compose.material3.DismissDirection
 import androidx.compose.material3.DismissValue
 import androidx.compose.material3.ElevatedCard
@@ -51,6 +52,7 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.focus.FocusRequester
 import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.platform.LocalUriHandler
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
@@ -180,7 +182,22 @@ fun SmsThreadScreen(
                                     Column(
                                         modifier = Modifier.padding(12.dp)
                                     ) {
-                                        Text(text = smsData.body)
+                                        SelectionContainer {
+                                            val uriHandler = LocalUriHandler.current
+                                            ClickableText(
+                                                text = smsData.formatted,
+                                                onClick = { offset ->
+                                                    val annotation =
+                                                        smsData.formatted.getStringAnnotations(
+                                                            offset,
+                                                            offset
+                                                        ).firstOrNull()
+                                                    annotation?.let {
+                                                        uriHandler.openUri(it.item)
+                                                    }
+                                                }
+                                            )
+                                        }
                                         Spacer(modifier = Modifier.height(4.dp))
                                         Text(
                                             modifier = Modifier.align(messageAlignment),
diff --git a/app/src/main/java/com/bnyro/contacts/util/TextFormatUtils.kt b/app/src/main/java/com/bnyro/contacts/util/TextFormatUtils.kt
new file mode 100644
index 00000000..77fbe618
--- /dev/null
+++ b/app/src/main/java/com/bnyro/contacts/util/TextFormatUtils.kt
@@ -0,0 +1,17 @@
+package com.bnyro.contacts.util
+
+enum class Format {
+    LINK, EMAIL, PHONE
+}
+
+fun MutableList<Pair<Format, String>>.addKeywords(
+    text: String,
+    regex: Regex,
+    format: Format
+) {
+    var results: MatchResult? = regex.find(text)
+    while (results != null) {
+        this.add(format to results.groupValues[1])
+        results = results.next()
+    }
+}