handling more text parsing cases for fallbacks and urls

core/src/main/kotlin/app/dapk/st/core/RichText.kt

@@ -7,6 +7,7 @@ data class RichText(val parts: Set<Part>) {
         data class Bold(val content: String) : Part
         data class Italic(val content: String) : Part
         data class BoldItalic(val content: String) : Part
+        data class Person(val userId: String) : Part
     }
 }
 

design-library/src/main/kotlin/app/dapk/st/design/components/Bubble.kt

@@ -17,14 +17,11 @@ import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.platform.LocalConfiguration
 import androidx.compose.ui.platform.LocalDensity
 import androidx.compose.ui.platform.LocalUriHandler
-import androidx.compose.ui.text.SpanStyle
-import androidx.compose.ui.text.TextStyle
-import androidx.compose.ui.text.buildAnnotatedString
+import androidx.compose.ui.text.*
 import androidx.compose.ui.text.font.FontStyle
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.text.style.TextDecoration
-import androidx.compose.ui.text.withStyle
 import androidx.compose.ui.unit.Density
 import androidx.compose.ui.unit.DpSize
 import androidx.compose.ui.unit.dp
@@ -265,6 +262,10 @@ val hyperLinkStyle = SpanStyle(
     textDecoration = TextDecoration.Underline
 )
 
+val nameStyle = SpanStyle(
+    color = Color(0xff64B5F6),
+)
+
 fun RichText.toAnnotatedText() = buildAnnotatedString {
     parts.forEach {
         when (it) {
@@ -278,6 +279,9 @@ fun RichText.toAnnotatedText() = buildAnnotatedString {
             }
 
             is RichText.Part.Normal -> append(it.content)
+            is RichText.Part.Person -> withStyle(nameStyle) {
+                append("@${it.userId.substringBefore(':').removePrefix("@")}")
+            }
         }
     }
 }
@@ -295,4 +299,4 @@ private fun AuthorName(event: BubbleModel.Event, bubble: BubbleMeta) {
 @Composable
 private fun BubbleMeta.textColor(): Color {
     return if (this.isSelf) SmallTalkTheme.extendedColors.onSelfBubble else SmallTalkTheme.extendedColors.onOthersBubble
-}
+}

features/messenger/src/main/kotlin/app/dapk/st/messenger/MessengerScreen.kt

@@ -234,6 +234,7 @@ private fun RichText.toApp(): app.dapk.st.core.RichText {
             is RichText.Part.Italic -> app.dapk.st.core.RichText.Part.Italic(it.content)
             is RichText.Part.Link -> app.dapk.st.core.RichText.Part.Link(it.url, it.label)
             is RichText.Part.Normal -> app.dapk.st.core.RichText.Part.Normal(it.content)
+            is RichText.Part.Person -> app.dapk.st.core.RichText.Part.Person(it.userId.value)
         }
     }.toSet())
 }

matrix/common/src/main/kotlin/app/dapk/st/matrix/common/RichText.kt

@@ -21,6 +21,9 @@ data class RichText(@SerialName("parts") val parts: Set<Part>) {
 
         @Serializable
         data class BoldItalic(@SerialName("content") val content: String) : Part
+
+        @Serializable
+        data class Person(@SerialName("user_id") val userId: UserId, @SerialName("display_name") val displayName: String) : Part
     }
 
     companion object {
@@ -35,5 +38,6 @@ fun RichText.asString() = parts.joinToString(separator = "") {
         is RichText.Part.Italic -> it.content
         is RichText.Part.Link -> it.label
         is RichText.Part.Normal -> it.content
+        is RichText.Part.Person -> it.userId.value
     }
 }

matrix/services/sync/src/main/kotlin/app/dapk/st/matrix/sync/internal/sync/RichMessageParser.kt

@@ -2,10 +2,14 @@ package app.dapk.st.matrix.sync.internal.sync
 
 import app.dapk.st.matrix.common.RichText
 import app.dapk.st.matrix.common.RichText.Part.*
+import app.dapk.st.matrix.common.UserId
 
 class RichMessageParser {
 
-    fun parse(input: String): RichText {
+    fun parse(source: String): RichText {
+        val input = source
+            .removeHtmlEntities()
+            .dropTextFallback()
         return kotlin.runCatching {
             val buffer = mutableSetOf<RichText.Part>()
             var openIndex = 0
@@ -21,12 +25,23 @@ class RichMessageParser {
                         val wholeTag = input.substring(foundIndex, closeIndex + 1)
                         val tagName = wholeTag.substring(1, wholeTag.indexOfFirst { it == '>' || it == ' ' })
 
+                        if (tagName.startsWith('@')) {
+                            if (openIndex != foundIndex) {
+                                buffer.add(Normal(input.substring(openIndex, foundIndex)))
+                            }
+                            buffer.add(Person(UserId(tagName), tagName))
+                            println(tagName)
+                            openIndex = foundIndex + wholeTag.length
+                            lastStartIndex = openIndex
+                            continue
+                        }
+
                         if (tagName == "br") {
                             if (openIndex != foundIndex) {
                                 buffer.add(Normal(input.substring(openIndex, foundIndex)))
                             }
                             buffer.add(Normal("\n"))
-                            openIndex = foundIndex + "<br />".length
+                            openIndex = foundIndex + wholeTag.length
                             lastStartIndex = openIndex
                             continue
                         }
@@ -39,6 +54,14 @@ class RichMessageParser {
                         if (exitIndex == -1) {
                             openIndex++
                         } else {
+                            when (tagName) {
+                                "mx-reply" -> {
+                                    openIndex = exitIndex + exitTag.length
+                                    lastStartIndex = openIndex
+                                    continue
+                                }
+                            }
+
                             if (openIndex != foundIndex) {
                                 buffer.add(Normal(input.substring(openIndex, foundIndex)))
                             }
@@ -49,7 +72,16 @@ class RichMessageParser {
                             when (tagName) {
                                 "a" -> {
                                     val findHrefUrl = wholeTag.substringAfter("href=").replace("\"", "").removeSuffix(">")
-                                    buffer.add(Link(url = findHrefUrl, label = tagContent))
+                                    if (findHrefUrl.startsWith("https://matrix.to/#/@")) {
+                                        val userId = UserId(findHrefUrl.substringAfter("https://matrix.to/#/").substringBeforeLast("\""))
+                                        buffer.add(Person(userId, "@${tagContent.removePrefix("@")}"))
+                                        if (input.getOrNull(openIndex) == ':') {
+                                            openIndex++
+                                            lastStartIndex = openIndex
+                                        }
+                                    } else {
+                                        buffer.add(Link(url = findHrefUrl, label = tagContent))
+                                    }
                                 }
 
                                 "b" -> buffer.add(Bold(tagContent))
@@ -84,12 +116,6 @@ class RichMessageParser {
 
                             else -> {
                                 val substring = input.substring(urlIndex, urlEndIndex)
-
-                                val last = substring.last()
-                                if (last == '.' || last == ',') {
-                                    substring.dropLast(1)
-                                }
-
                                 val url = substring.removeSuffix(".").removeSuffix(",")
                                 buffer.add(Link(url = url, label = url))
                                 openIndex = if (substring.endsWith('.') || substring.endsWith(',')) urlEndIndex - 1 else urlEndIndex
@@ -114,3 +140,7 @@ class RichMessageParser {
     }
 
 }
+
+private fun String.removeHtmlEntities() = this.replace("&quot;", "\"").replace("&#39;", "'")
+
+private fun String.dropTextFallback() = this.lines().dropWhile { it.startsWith("> ") || it.isEmpty() }.joinToString("")

matrix/services/sync/src/test/kotlin/app/dapk/st/matrix/sync/internal/sync/RichMessageParserTest.kt

@@ -1,8 +1,8 @@
 package app.dapk.st.matrix.sync.internal.sync
 
 import app.dapk.st.matrix.common.RichText
-import app.dapk.st.matrix.common.RichText.Part.Link
-import app.dapk.st.matrix.common.RichText.Part.Normal
+import app.dapk.st.matrix.common.RichText.Part.*
+import fixture.aUserId
 import org.amshove.kluent.shouldBeEqualTo
 import org.junit.Ignore
 import org.junit.Test
@@ -23,6 +23,30 @@ class RichMessageParserTest {
         expected = RichText(setOf(Normal("Hello world! "), Normal("foo bar"), Normal(" after paragraph")))
     )
 
+    @Test
+    fun `replaces quote entity`() = runParserTest(
+        input = "Hello world! "foo bar"",
+        expected = RichText(setOf(Normal("Hello world! \"foo bar\"")))
+    )
+
+    @Test
+    fun `replaces apostrophe entity`() = runParserTest(
+        input = "Hello world! foo's bar",
+        expected = RichText(setOf(Normal("Hello world! foo's bar")))
+    )
+
+    @Test
+    fun `replaces people`() = runParserTest(
+        input = "Hello <@my-name:a-domain.foo>!",
+        expected = RichText(setOf(Normal("Hello "), Person(aUserId("@my-name:a-domain.foo"), "@my-name:a-domain.foo"), Normal("!")))
+    )
+
+    @Test
+    fun `replaces matrixdotto with person`() = runParserTest(
+        input = """Hello <a href="https://matrix.to/#/@a-name:foo.bar>a-name</a>: world""",
+        expected = RichText(setOf(Normal("Hello "), Person(aUserId("@a-name:foo.bar"), "@a-name"), Normal(" world")))
+    )
+
     @Test
     fun `skips header tags`() = runParserTest(
         Case(
@@ -62,15 +86,39 @@ class RichMessageParserTest {
     )
 
     @Test
-    fun `parses styling text`() = runParserTest(
-        input = "<em>hello</em> <strong>world</strong>",
-        expected = RichText(setOf(RichText.Part.Italic("hello"), Normal(" "), RichText.Part.Bold("world")))
+    fun `removes reply fallback`() = runParserTest(
+        input = """
+            <mx-reply>
+              <blockquote>
+              Original message
+              </blockquote>
+            </mx-reply>
+            Reply to message
+        """.trimIndent(),
+        expected = RichText(setOf(Normal("Reply to message")))
     )
 
     @Test
-    fun `parses raw reply text`() = runParserTest(
-        input = "> <@a-matrix-id:domain.foo> This is a reply",
-        expected = RichText(setOf(Normal("> <@a-matrix-id:domain.foo> This is a reply")))
+    fun `removes text fallback`() = runParserTest(
+        input = """
+            > <@user:domain.foo> Original message
+            > Some more content
+            
+            Reply to message
+        """.trimIndent(),
+        expected = RichText(setOf(Normal("Reply to message")))
+    )
+
+    @Test
+    fun `parses styling text`() = runParserTest(
+        input = "<em>hello</em> <strong>world</strong>",
+        expected = RichText(setOf(Italic("hello"), Normal(" "), Bold("world")))
+    )
+
+    @Test
+    fun `parses invalid tags text`() = runParserTest(
+        input = ">><foo> ><>> << more content",
+        expected = RichText(setOf(Normal(">><foo> ><>> << more content")))
     )
 
     @Test
@@ -80,7 +128,7 @@ class RichMessageParserTest {
             expected = RichText(
                 setOf(
                     Normal("hello "),
-                    RichText.Part.Bold("wor"),
+                    Bold("wor"),
                     Normal("ld"),
                 )
             )
@@ -94,7 +142,7 @@ class RichMessageParserTest {
             expected = RichText(
                 setOf(
                     Normal("hello "),
-                    RichText.Part.Italic("wor"),
+                    Italic("wor"),
                     Normal("ld"),
                 )
             )