logic/com.wire.kalium.logic.data.message.linkpreview

Package-level declarations

Types

ExclusionRanges

internal object ExclusionRanges

Computes ranges to exclude from link preview detection (mentions and markdown links).

ImageMetadata

internal data class ImageMetadata(val width: Int, val height: Int, val mimeType: String)

LinkPreviewRepository

internal interface LinkPreviewRepository

Fetches preview content, interprets OpenGraph metadata, and prepares image assets.

LinkPreviewRepositoryImpl

internal class LinkPreviewRepositoryImpl(kaliumFileSystem: KaliumFileSystem, fetchHtmlHead: suspend (String) -> String? = ::fetchLinkPreviewHtmlHead, fetchImageData: suspend (String) -> FetchedPreviewImage? = ::fetchLinkPreviewImage) : LinkPreviewRepository

OpenGraphData

internal data class OpenGraphData(val title: String?, val type: String = "website", val url: String?, val description: String?, val imageUrls: List<String> = emptyList(), val siteName: String?)

Internal parsed Open Graph data structure.

OpenGraphScanner

internal object OpenGraphScanner

Scans HTML head for Open Graph metadata using DOM-based parsing (Ksoup).

PreviewBlacklist

internal object PreviewBlacklist

Blocks link previews for URLs from certain hosts (e.g., video/music streaming services). Uses substring matching for simplicity and to catch variations (e.g., youtu.be, youtube.com).

UrlDetector

internal object UrlDetector

Extracts complete URL candidates with original UTF-16 spans. Fetching enforces network policy separately.

Properties

MAX_PREVIEW_ASSET_NAME_LENGTH

internal const val MAX_PREVIEW_ASSET_NAME_LENGTH: Int = 255

MAX_PREVIEW_DESCRIPTION_LENGTH

internal const val MAX_PREVIEW_DESCRIPTION_LENGTH: Int

MAX_PREVIEW_SITE_NAME_LENGTH

internal const val MAX_PREVIEW_SITE_NAME_LENGTH: Int = 120

MAX_PREVIEW_TITLE_LENGTH

internal const val MAX_PREVIEW_TITLE_LENGTH: Int = 300

MAX_PREVIEW_URL_LENGTH

internal const val MAX_PREVIEW_URL_LENGTH: Int

Functions

normalizePreviewUnicode

internal actual fun normalizePreviewUnicode(input: String): String

internal expect fun normalizePreviewUnicode(input: String): String

internal actual fun normalizePreviewUnicode(input: String): String

readImageMetadata

internal actual fun readImageMetadata(bytes: ByteArray, fallbackMimeType: String): ImageMetadata?

internal expect fun readImageMetadata(bytes: ByteArray, fallbackMimeType: String): ImageMetadata?

internal actual fun readImageMetadata(bytes: ByteArray, fallbackMimeType: String): ImageMetadata?

sanitizePreviewText

internal fun sanitizePreviewText(input: String?, maxLength: Int, collapseWhitespace: Boolean = true): String?