Initial commit

app/src/main/java/com/aryan/reader/paginatedreader/SemanticModel.kt

@@ -0,0 +1,184 @@
+// SemanticModel.kt
+@file:OptIn(ExperimentalSerializationApi::class)
+
+package com.aryan.reader.paginatedreader
+
+import kotlinx.serialization.ExperimentalSerializationApi
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.protobuf.ProtoNumber
+import kotlinx.serialization.modules.SerializersModule
+import kotlinx.serialization.modules.polymorphic
+import kotlinx.serialization.modules.subclass
+
+
+@Serializable
+sealed interface SemanticBlock {
+    val elementId: String?
+    val cfi: String?
+    val style: CssStyle
+    val blockIndex: Int
+}
+
+@Serializable
+data class SemanticSpan(
+    @ProtoNumber(1) val start: Int,
+    @ProtoNumber(2) val end: Int,
+    @ProtoNumber(3) val style: CssStyle,
+    @ProtoNumber(4) val linkHref: String? = null,
+    @ProtoNumber(5) val tag: String,
+    @ProtoNumber(6) val elementId: String? = null // Add this
+)
+
+fun SemanticBlock.withElementId(id: String): SemanticBlock {
+    if (this.elementId != null) return this
+    return when (this) {
+        is SemanticParagraph -> this.copy(elementId = id)
+        is SemanticHeader -> this.copy(elementId = id)
+        is SemanticListItem -> this.copy(elementId = id)
+        is SemanticList -> this.copy(elementId = id)
+        is SemanticImage -> this.copy(elementId = id)
+        is SemanticMath -> this.copy(elementId = id)
+        is SemanticSpacer -> this.copy(elementId = id)
+        is SemanticTable -> this.copy(elementId = id)
+        is SemanticFlexContainer -> this.copy(elementId = id)
+        is SemanticWrappingBlock -> this.copy(elementId = id)
+        is SemanticTextBlock -> this
+    }
+}
+
+interface SemanticTextBlock : SemanticBlock {
+    val text: String
+    val spans: List<SemanticSpan>
+    val startCharOffsetInSource: Int
+}
+
+@Serializable
+data class SemanticParagraph(
+    @ProtoNumber(1) override val text: String,
+    @ProtoNumber(2) override val spans: List<SemanticSpan>,
+    @ProtoNumber(3) override val style: CssStyle,
+    @ProtoNumber(4) override val elementId: String?,
+    @ProtoNumber(5) override val cfi: String?,
+    @ProtoNumber(6) override val startCharOffsetInSource: Int = 0,
+    @ProtoNumber(7) override val blockIndex: Int = 0
+) : SemanticTextBlock
+
+@Serializable
+data class SemanticHeader(
+    @ProtoNumber(1) val level: Int,
+    @ProtoNumber(2) override val text: String,
+    @ProtoNumber(3) override val spans: List<SemanticSpan>,
+    @ProtoNumber(4) override val style: CssStyle,
+    @ProtoNumber(5) override val elementId: String?,
+    @ProtoNumber(6) override val cfi: String?,
+    @ProtoNumber(7) override val startCharOffsetInSource: Int = 0,
+    @ProtoNumber(8) override val blockIndex: Int = 0
+) : SemanticTextBlock
+
+@Serializable
+data class SemanticListItem(
+    @ProtoNumber(1) override val text: String,
+    @ProtoNumber(2) override val spans: List<SemanticSpan>,
+    @ProtoNumber(3) override val style: CssStyle,
+    @ProtoNumber(4) override val elementId: String?,
+    @ProtoNumber(5) override val cfi: String?,
+    @ProtoNumber(6) override val startCharOffsetInSource: Int = 0,
+    @ProtoNumber(7) val itemMarkerImage: String?,
+    @ProtoNumber(8) override val blockIndex: Int = 0
+) : SemanticTextBlock
+
+@Serializable
+data class SemanticList(
+    @ProtoNumber(1) val items: List<SemanticListItem>,
+    @ProtoNumber(2) val isOrdered: Boolean,
+    @ProtoNumber(3) override val style: CssStyle,
+    @ProtoNumber(4) override val elementId: String?,
+    @ProtoNumber(5) override val cfi: String?,
+    @ProtoNumber(6) override val blockIndex: Int = 0
+) : SemanticBlock
+
+@Serializable
+data class SemanticImage(
+    @ProtoNumber(1) val path: String, // Will store the absolute path
+    @ProtoNumber(2) val altText: String?,
+    @ProtoNumber(3) val intrinsicWidth: Float?,
+    @ProtoNumber(4) val intrinsicHeight: Float?,
+    @ProtoNumber(5) override val style: CssStyle,
+    @ProtoNumber(6) override val elementId: String?,
+    @ProtoNumber(7) override val cfi: String?,
+    @ProtoNumber(8) override val blockIndex: Int = 0
+) : SemanticBlock
+
+@Serializable
+data class SemanticMath(
+    @ProtoNumber(1) val svgContent: String?,
+    @ProtoNumber(2) val altText: String?,
+    @ProtoNumber(3) val svgWidth: String?,
+    @ProtoNumber(4) val svgHeight: String?,
+    @ProtoNumber(5) val svgViewBox: String?,
+    @ProtoNumber(6) val isFromMathJax: Boolean,
+    @ProtoNumber(7) override val style: CssStyle,
+    @ProtoNumber(8) override val elementId: String?,
+    @ProtoNumber(9) override val cfi: String?,
+    @ProtoNumber(10) override val blockIndex: Int = 0
+) : SemanticBlock
+
+@Serializable
+data class SemanticSpacer(
+    @ProtoNumber(1) override val style: CssStyle,
+    @ProtoNumber(2) override val elementId: String?,
+    @ProtoNumber(3) override val cfi: String?,
+    @ProtoNumber(4) val isExplicitLineBreak: Boolean = false,
+    @ProtoNumber(5) override val blockIndex: Int = 0
+) : SemanticBlock
+
+@Serializable
+data class SemanticTableCell(
+    @ProtoNumber(1) val content: List<SemanticBlock>,
+    @ProtoNumber(2) val isHeader: Boolean,
+    @ProtoNumber(3) val colspan: Int,
+    @ProtoNumber(4) val style: CssStyle
+)
+
+@Serializable
+data class SemanticTable(
+    @ProtoNumber(1) val rows: List<List<SemanticTableCell>>,
+    @ProtoNumber(2) override val style: CssStyle,
+    @ProtoNumber(3) override val elementId: String?,
+    @ProtoNumber(4) override val cfi: String?,
+    @ProtoNumber(5) override val blockIndex: Int = 0
+) : SemanticBlock
+
+@Serializable
+data class SemanticFlexContainer(
+    @ProtoNumber(1) val children: List<SemanticBlock>,
+    @ProtoNumber(2) override val style: CssStyle,
+    @ProtoNumber(3) override val elementId: String?,
+    @ProtoNumber(4) override val cfi: String?,
+    @ProtoNumber(5) override val blockIndex: Int = 0
+) : SemanticBlock
+
+@Serializable
+data class SemanticWrappingBlock(
+    @ProtoNumber(1) val floatedImage: SemanticImage,
+    @ProtoNumber(2) val paragraphsToWrap: List<SemanticParagraph>,
+    @ProtoNumber(3) override val style: CssStyle,
+    @ProtoNumber(4) override val elementId: String?,
+    @ProtoNumber(5) override val cfi: String?,
+    @ProtoNumber(6) override val blockIndex: Int = 0
+) : SemanticBlock
+
+val semanticBlockModule = SerializersModule {
+    polymorphic(SemanticBlock::class) {
+        subclass(SemanticParagraph::class)
+        subclass(SemanticHeader::class)
+        subclass(SemanticListItem::class)
+        subclass(SemanticList::class)
+        subclass(SemanticImage::class)
+        subclass(SemanticMath::class)
+        subclass(SemanticSpacer::class)
+        subclass(SemanticTable::class)
+        subclass(SemanticFlexContainer::class)
+        subclass(SemanticWrappingBlock::class)
+    }
+}