Add data classes for index v2 (Touches #287)

Signed-off-by: LooKeR <mohit2002ss@gmail.com>

core/data/src/main/java/com/looker/core/data/fdroid/IndexParser.kt

@@ -0,0 +1,43 @@
+package com.looker.core.data.fdroid
+
+import com.looker.core.data.fdroid.model.v1.IndexV1
+import com.looker.core.data.fdroid.model.v2.Entry
+import com.looker.core.data.fdroid.model.v2.IndexV2
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.json.Json
+
+object IndexParser {
+
+	@Volatile
+	private var JSON: Json? = null
+
+	/**
+	 * Initializing [Json] is expensive, so using this method is preferable as it keeps returning
+	 * a single instance with the recommended settings.
+	 */
+	val json: Json
+		@JvmStatic
+		get() {
+			return JSON ?: synchronized(this) {
+				Json {
+					ignoreUnknownKeys = true
+				}
+			}
+		}
+
+	@JvmStatic
+	fun parseV1(str: String): IndexV1 {
+		return json.decodeFromString(str)
+	}
+
+	@JvmStatic
+	fun parseV2(str: String): IndexV2 {
+		return json.decodeFromString(str)
+	}
+
+	@JvmStatic
+	fun parseEntry(str: String): Entry {
+		return json.decodeFromString(str)
+	}
+
+}

core/data/src/main/java/com/looker/core/data/fdroid/model/IndexFile.kt

@@ -0,0 +1,10 @@
+package com.looker.core.data.fdroid.model
+
+interface IndexFile {
+	val name: String
+	val sha256: String?
+	val size: Long?
+	val ipfsCidV1: String?
+
+	suspend fun serialize(): String
+}

core/data/src/main/java/com/looker/core/data/fdroid/model/v2/Entry.kt

@@ -0,0 +1,47 @@
+package com.looker.core.data.fdroid.model.v2
+
+import com.looker.core.data.fdroid.IndexParser.json
+import com.looker.core.data.fdroid.model.IndexFile
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.encodeToString
+
+@Serializable
+data class Entry(
+	val timestamp: Long,
+	val version: Long,
+	val maxAge: Int? = null,
+	val index: EntryFileV2,
+	val diffs: Map<String, EntryFileV2> = emptyMap(),
+) {
+	/**
+	 * @return the diff for the given [timestamp] or null if none exists
+	 * in which case the full [index] should be used.
+	 */
+	fun getDiff(timestamp: Long): EntryFileV2? {
+		return diffs[timestamp.toString()]
+	}
+}
+
+
+@Serializable
+data class EntryFileV2(
+	override val name: String,
+	override val sha256: String,
+	override val size: Long,
+	@SerialName("ipfsCIDv1")
+	override val ipfsCidV1: String? = null,
+	val numPackages: Int,
+) : IndexFile {
+	companion object {
+		fun deserialize(string: String): EntryFileV2 {
+			return json.decodeFromString(string)
+		}
+	}
+
+	override suspend fun serialize(): String {
+		return json.encodeToString(this)
+	}
+}
+

core/data/src/main/java/com/looker/core/data/fdroid/model/v2/FileV2.kt

@@ -0,0 +1,63 @@
+package com.looker.core.data.fdroid.model.v2
+
+import com.looker.core.data.fdroid.IndexParser.json
+import com.looker.core.data.fdroid.model.IndexFile
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.encodeToString
+
+
+@Serializable
+data class FileV2(
+	override val name: String,
+	override val sha256: String? = null,
+	override val size: Long? = null,
+	@SerialName("ipfsCIDv1")
+	override val ipfsCidV1: String? = null,
+) : IndexFile {
+	companion object {
+		@JvmStatic
+		fun deserialize(string: String?): FileV2? {
+			if (string == null) return null
+			return json.decodeFromString(string)
+		}
+
+		@JvmStatic
+		fun fromPath(path: String): FileV2 = FileV2(path)
+	}
+
+	override suspend fun serialize(): String {
+		return json.encodeToString(this)
+	}
+}
+
+typealias LocalizedTextV2 = Map<String, String>
+typealias LocalizedFileV2 = Map<String, FileV2>
+typealias LocalizedFileListV2 = Map<String, List<FileV2>>
+
+@Serializable
+data class MirrorV2(
+	val url: String,
+	val location: String? = null,
+)
+
+@Serializable
+data class AntiFeatureV2(
+	val icon: LocalizedFileV2 = emptyMap(),
+	val name: LocalizedTextV2,
+	val description: LocalizedTextV2 = emptyMap(),
+)
+
+@Serializable
+data class CategoryV2(
+	val icon: LocalizedFileV2 = emptyMap(),
+	val name: LocalizedTextV2,
+	val description: LocalizedTextV2 = emptyMap(),
+)
+
+@Serializable
+data class ReleaseChannelV2(
+	val name: LocalizedTextV2,
+	val description: LocalizedTextV2 = emptyMap(),
+)

core/data/src/main/java/com/looker/core/data/fdroid/model/v2/IndexV2.kt

@@ -0,0 +1,14 @@
+package com.looker.core.data.fdroid.model.v2
+
+import kotlinx.serialization.Serializable
+
+@Serializable
+public data class IndexV2(
+	val repo: RepoV2,
+	val packages: Map<String, PackageV2> = emptyMap(),
+) {
+	public fun walkFiles(fileConsumer: (FileV2?) -> Unit) {
+		repo.walkFiles(fileConsumer)
+		packages.values.forEach { it.walkFiles(fileConsumer) }
+	}
+}

core/data/src/main/java/com/looker/core/data/fdroid/model/v2/PackageV2.kt

@@ -0,0 +1,177 @@
+package com.looker.core.data.fdroid.model.v2
+
+import com.looker.core.data.fdroid.IndexParser
+import com.looker.core.data.fdroid.model.IndexFile
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.encodeToString
+
+@Serializable
+data class PackageV2(
+	val metadata: MetadataV2,
+	val versions: Map<String, PackageVersionV2> = emptyMap(),
+) {
+	fun walkFiles(fileConsumer: (FileV2?) -> Unit) {
+		metadata.walkFiles(fileConsumer)
+		versions.values.forEach { it.walkFiles(fileConsumer) }
+	}
+}
+
+@Serializable
+data class MetadataV2(
+	val name: LocalizedTextV2? = null,
+	val summary: LocalizedTextV2? = null,
+	val description: LocalizedTextV2? = null,
+	val added: Long,
+	val lastUpdated: Long,
+	val webSite: String? = null,
+	val changelog: String? = null,
+	val license: String? = null,
+	val sourceCode: String? = null,
+	val issueTracker: String? = null,
+	val translation: String? = null,
+	val preferredSigner: String? = null,
+	val categories: List<String> = emptyList(),
+	val authorName: String? = null,
+	val authorEmail: String? = null,
+	val authorWebSite: String? = null,
+	val authorPhone: String? = null,
+	val donate: List<String> = emptyList(),
+	val liberapayID: String? = null,
+	val liberapay: String? = null,
+	val openCollective: String? = null,
+	val bitcoin: String? = null,
+	val litecoin: String? = null,
+	val flattrID: String? = null,
+	val icon: LocalizedFileV2? = null,
+	val featureGraphic: LocalizedFileV2? = null,
+	val promoGraphic: LocalizedFileV2? = null,
+	val tvBanner: LocalizedFileV2? = null,
+	val video: LocalizedTextV2? = null,
+	val screenshots: Screenshots? = null,
+) {
+	fun walkFiles(fileConsumer: (FileV2?) -> Unit) {
+		icon?.values?.forEach { fileConsumer(it) }
+		featureGraphic?.values?.forEach { fileConsumer(it) }
+		promoGraphic?.values?.forEach { fileConsumer(it) }
+		tvBanner?.values?.forEach { fileConsumer(it) }
+		screenshots?.phone?.values?.forEach { it.forEach(fileConsumer) }
+		screenshots?.sevenInch?.values?.forEach { it.forEach(fileConsumer) }
+		screenshots?.tenInch?.values?.forEach { it.forEach(fileConsumer) }
+		screenshots?.wear?.values?.forEach { it.forEach(fileConsumer) }
+		screenshots?.tv?.values?.forEach { it.forEach(fileConsumer) }
+	}
+}
+
+
+@Serializable
+data class Screenshots(
+	val phone: LocalizedFileListV2? = null,
+	val sevenInch: LocalizedFileListV2? = null,
+	val tenInch: LocalizedFileListV2? = null,
+	val wear: LocalizedFileListV2? = null,
+	val tv: LocalizedFileListV2? = null,
+) {
+	val isNull: Boolean
+		get() = phone == null && sevenInch == null && tenInch == null && wear == null && tv == null
+}
+
+interface PackageVersion {
+	val versionCode: Long
+	val signer: SignerV2?
+	val releaseChannels: List<String>?
+	val packageManifest: PackageManifest
+	val hasKnownVulnerability: Boolean
+}
+
+const val ANTI_FEATURE_KNOWN_VULNERABILITY: String = "KnownVuln"
+
+@Serializable
+data class PackageVersionV2(
+	val added: Long,
+	val file: FileV1,
+	val src: FileV2? = null,
+	val manifest: ManifestV2,
+	override val releaseChannels: List<String> = emptyList(),
+	val antiFeatures: Map<String, LocalizedTextV2> = emptyMap(),
+	val whatsNew: LocalizedTextV2 = emptyMap(),
+) : PackageVersion {
+	override val versionCode: Long = manifest.versionCode
+	override val signer: SignerV2? = manifest.signer
+	override val packageManifest: PackageManifest = manifest
+	override val hasKnownVulnerability: Boolean
+		get() = antiFeatures.contains(ANTI_FEATURE_KNOWN_VULNERABILITY)
+
+	fun walkFiles(fileConsumer: (FileV2?) -> Unit) {
+		fileConsumer(src)
+	}
+}
+
+@Serializable
+data class FileV1(
+	override val name: String,
+	override val sha256: String,
+	override val size: Long? = null,
+	@SerialName("ipfsCIDv1")
+	override val ipfsCidV1: String? = null,
+) : IndexFile {
+	companion object {
+		@JvmStatic
+		fun deserialize(string: String?): FileV1? {
+			if (string == null) return null
+			return IndexParser.json.decodeFromString(string)
+		}
+	}
+
+	override suspend fun serialize(): String {
+		return IndexParser.json.encodeToString(this)
+	}
+}
+
+
+interface PackageManifest {
+	val minSdkVersion: Int?
+	val maxSdkVersion: Int?
+	val featureNames: List<String>?
+	val nativecode: List<String>?
+}
+
+@Serializable
+data class ManifestV2(
+	val versionName: String,
+	val versionCode: Long,
+	val usesSdk: UsesSdkV2? = null,
+	override val maxSdkVersion: Int? = null,
+	val signer: SignerV2? = null, // yes this can be null for stuff like non-apps
+	val usesPermission: List<PermissionV2> = emptyList(),
+	val usesPermissionSdk23: List<PermissionV2> = emptyList(),
+	override val nativecode: List<String> = emptyList(),
+	val features: List<FeatureV2> = emptyList(),
+) : PackageManifest {
+	override val minSdkVersion: Int? = usesSdk?.minSdkVersion
+	override val featureNames: List<String> = features.map { it.name }
+}
+
+@Serializable
+data class UsesSdkV2(
+	val minSdkVersion: Int,
+	val targetSdkVersion: Int,
+)
+
+@Serializable
+data class SignerV2(
+	val sha256: List<String>,
+	val hasMultipleSigners: Boolean = false,
+)
+
+@Serializable
+data class PermissionV2(
+	val name: String,
+	val maxSdkVersion: Int? = null,
+)
+
+@Serializable
+data class FeatureV2(
+	val name: String,
+)

core/data/src/main/java/com/looker/core/data/fdroid/model/v2/RepoV2.kt

@@ -0,0 +1,23 @@
+package com.looker.core.data.fdroid.model.v2
+
+import kotlinx.serialization.Serializable
+
+@Serializable
+public data class RepoV2(
+	val name: LocalizedTextV2 = emptyMap(),
+	val icon: LocalizedFileV2 = emptyMap(),
+	val address: String,
+	val webBaseUrl: String? = null,
+	val description: LocalizedTextV2 = emptyMap(),
+	val mirrors: List<MirrorV2> = emptyList(),
+	val timestamp: Long,
+	val antiFeatures: Map<String, AntiFeatureV2> = emptyMap(),
+	val categories: Map<String, CategoryV2> = emptyMap(),
+	val releaseChannels: Map<String, ReleaseChannelV2> = emptyMap(),
+) {
+	public fun walkFiles(fileConsumer: (FileV2?) -> Unit) {
+		icon.values.forEach { fileConsumer(it) }
+		antiFeatures.values.forEach { it.icon.values.forEach { icon -> fileConsumer(icon) } }
+		categories.values.forEach { it.icon.values.forEach { icon -> fileConsumer(icon) } }
+	}
+}