Updated on 2026-08-14
This commit is contained in:
Tangem
parent
31e7fa6885
commit
3416aa25e5
7 changed files with 208 additions and 177 deletions
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@ -8,23 +8,31 @@ import kotlin.collections.HashMap
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import android.graphics.BitmapFactory
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import com.google.gson.Gson
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import com.google.gson.reflect.TypeToken
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import com.tangem.data.network.model.CardVerifyAndGetInfo
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import com.tangem.domain.cardReader.CardCrypto
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import com.tangem.util.Util
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import com.tangem.wallet.R
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import java.io.InputStream
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import java.lang.Exception
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import java.nio.charset.StandardCharsets
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import java.time.Instant
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data class ArtworksStorage(
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data class LocalStorage(
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val context: Context
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) {
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private val cache: FileCache = FileCache(context)
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private lateinit var artworks: HashMap<String, ArtworkInfo>
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private lateinit var batches: HashMap<String, BatchInfo>
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private var artworksFile: File = File(context.filesDir, "artworks.json")
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private var batchesFile: File = File(context.filesDir, "batches.json")
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private val artworksFile: File = File(context.filesDir, "artworks.json")
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private val batchesFile: File = File(context.filesDir, "batches.json")
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private var cacheDir: File? = null
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init {
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cacheDir = File(context.filesDir, "artworks")
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if (!cacheDir!!.exists())
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cacheDir!!.mkdirs()
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if (artworksFile.exists()) {
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artworksFile.bufferedReader().use { artworks = Gson().fromJson(it, object : TypeToken<HashMap<String, ArtworkInfo>>() {}.type) }
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} else {
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@ -62,24 +70,44 @@ data class ArtworksStorage(
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}
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}
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fun checkNeedUpdateArtwork(artworkId: String, artworkHash: String, updateDate: Instant?): Boolean {
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val artwork = artworks[artworkId] ?: return true
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if (artwork.hash == artworkHash) return false
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if (updateDate == null) return false
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return artwork.updateDate == null || artwork.updateDate < updateDate
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private fun getArtworkFile(artworkId: String): File {
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return File(cacheDir, "$artworkId.png")
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}
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fun checkBatchArtworkChanged(batch: String, artworkId: String): Boolean {
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val batchInfo = batches[batch]
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if (batchInfo == null) {
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putBatchToCatalog(batch, artworkId)
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return true
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private fun loadArtworkBitmapFromFile(artworkId: String): Bitmap? {
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return try {
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BitmapFactory.decodeFile(getArtworkFile(artworkId).absolutePath)
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} catch (E: Exception) {
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E.printStackTrace()
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null
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}
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if (batchInfo.artworkId != artworkId) {
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putBatchToCatalog(batch, artworkId)
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}
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private fun saveArtworkBitmapToFile(artworkId: String, data: ByteArray) {
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val file = getArtworkFile(artworkId)
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file.writeBytes(data)
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}
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fun checkNeedUpdateArtwork(artwork: CardVerifyAndGetInfo.Response.Item.ArtworkInfo?): Boolean {
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if (artwork == null) return false
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val localArtwork = artworks[artwork.id] ?: return true
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if (localArtwork.hash == artwork.hash) return false
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return localArtwork.updateDate == null || localArtwork.updateDate < artwork.getUpdateDate()
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}
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fun checkBatchInfoChanged(result: CardVerifyAndGetInfo.Response.Item): Boolean {
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var sData: String? = result.substitution?.data
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var sSignature: String? = result.substitution?.signature
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if (!BatchInfo.CardDataSubstitution.verifySignature(result.batch, sData, sSignature)) {
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sData = null
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sSignature = null
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}
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val batchInfo = batches[result.batch]
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if (batchInfo == null || batchInfo.artworkId != result.artwork?.id || batchInfo.dataSubstitution != sData) {
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putBatchToCatalog(result.batch, result.artwork?.id, sData, sSignature)
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return true
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}
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return false
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@ -87,12 +115,12 @@ data class ArtworksStorage(
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fun updateArtwork(artworkId: String, inputStream: InputStream, updateDate: Instant) {
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val data = inputStream.readBytes()
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cache.saveBitmap(artworkId, data)
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saveArtworkBitmapToFile(artworkId, data)
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putArtworkToCatalog(artworkId, false, data, updateDate, true)
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}
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private fun putBatchToCatalog(batch: String, artworkId: String, forceSave: Boolean = true) {
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batches[batch] = BatchInfo(artworkId)
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private fun putBatchToCatalog(batch: String, artworkId: String?, substitution: String?, substitutionSignature: String?, forceSave: Boolean = true) {
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batches[batch] = BatchInfo(artworkId, substitution, substitutionSignature)
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if (forceSave) {
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val sBatches = Gson().toJson(batches)
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batchesFile.bufferedWriter().use { it.write(sBatches) }
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@ -122,15 +150,16 @@ data class ArtworksStorage(
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if (resID == 0) return null
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BitmapFactory.decodeResource(context.resources, resID)
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} else {
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cache.getBitmap(artworkId)
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loadArtworkBitmapFromFile(artworkId)
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}
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}
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private fun getDefaultArtworkBitmap(): Bitmap {
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val defaultArtworkId = context.resources.getResourceEntryName(R.drawable.card_default)
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val info = artworks[defaultArtworkId]
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var bitmap: Bitmap? = null
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if (info != null && !info.isResource) {
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bitmap = cache.getBitmap(defaultArtworkId)
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bitmap = loadArtworkBitmapFromFile(defaultArtworkId)
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}
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if (bitmap == null) return BitmapFactory.decodeResource(context.resources, R.drawable.card_default)
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return bitmap
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@ -138,57 +167,63 @@ data class ArtworksStorage(
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fun getCardArtworkBitmap(card: TangemCard): Bitmap {
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// special cases (first series of cards, hardcode CID->artwork), on new series batch<->artwork
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var artworkId =
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val artworkId =
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when (card.cidDescription) {
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in "AA01 0000 0000 0000".."AA01 0000 0000 4999" -> {
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context.resources.getResourceName(R.drawable.card_btc_001)
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context.resources.getResourceEntryName(R.drawable.card_btc_001)
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}
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in "AA01 0000 0000 5000".."AA01 0000 0000 9999" -> {
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context.resources.getResourceName(R.drawable.card_btc_005)
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context.resources.getResourceEntryName(R.drawable.card_btc_005)
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}
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in "AE01 0000 0000 0000".."AE01 0000 0000 4999" -> {
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context.resources.getResourceName(R.drawable.card_btc_001)
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context.resources.getResourceEntryName(R.drawable.card_btc_001)
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}
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in "AE01 0000 0000 5000".."AE01 0000 0000 9999" -> {
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context.resources.getResourceName(R.drawable.card_btc_005)
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context.resources.getResourceEntryName(R.drawable.card_btc_005)
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}
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in "CB01 0000 0000 0000".."CB01 0000 0000 9999" -> {
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context.resources.getResourceName(R.drawable.card_btc_001)
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context.resources.getResourceEntryName(R.drawable.card_btc_001)
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}
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in "CB01 0000 0001 0000".."CB01 0000 0001 9999" -> {
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context.resources.getResourceName(R.drawable.card_btc_005)
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context.resources.getResourceEntryName(R.drawable.card_btc_005)
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}
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in "CB01 0000 0002 0000".."CB01 0000 0003 9999" -> {
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context.resources.getResourceName(R.drawable.card_btc_001)
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context.resources.getResourceEntryName(R.drawable.card_btc_001)
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}
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in "CB01 0000 0004 0000".."CB01 0000 0005 9999" -> {
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context.resources.getResourceName(R.drawable.card_btc_005)
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context.resources.getResourceEntryName(R.drawable.card_btc_005)
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}
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in "CB02 0000 0000 0000".."CB02 0000 0002 4999" -> {
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context.resources.getResourceName(R.drawable.card_btc_001)
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context.resources.getResourceEntryName(R.drawable.card_btc_001)
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}
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in "CB02 0000 0002 5000".."CB02 0000 0004 9999" -> {
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context.resources.getResourceName(R.drawable.card_btc_005)
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context.resources.getResourceEntryName(R.drawable.card_btc_005)
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}
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in "CB05 0000 1000 0000".."CB05 0000 1000 9999" -> {
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context.resources.getResourceName(R.drawable.card_btc_001)
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context.resources.getResourceEntryName(R.drawable.card_btc_001)
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}
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else -> {
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val batchInfo = batches[card.batch] ?: return getDefaultArtworkBitmap()
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batchInfo.artworkId
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}
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}
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if( artworkId.contains('/'))
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artworkId=artworkId.split('/').last()
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} ?: return getDefaultArtworkBitmap()
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// if (artworkId.contains('/'))
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// artworkId = artworkId.split('/').last()
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return getArtworkBitmap(artworkId) ?: return getDefaultArtworkBitmap()
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}
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fun applySubstitution(card: TangemCard) {
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val batchInfo = batches[card.batch] ?: return
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val substitution = batchInfo.getDataSubstitution(card.batch) ?: return
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substitution.applyToCard(card)
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}
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data class ArtworkInfo(
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val isResource: Boolean,
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val hash: String,
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@ -196,51 +231,40 @@ data class ArtworksStorage(
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)
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data class BatchInfo(
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val artworkId: String
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)
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val artworkId: String?,
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val dataSubstitution: String?,
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val dataSubstitutionSignature: String?
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) {
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inner class FileCache(context: Context) {
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private var cacheDir: File? = null
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init {
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cacheDir = File(context.filesDir, "artworks")
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//Find the dir to save cached images
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// if (android.os.Environment.getExternalStorageState() == android.os.Environment.MEDIA_MOUNTED)
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// cacheDir = File(android.os.Environment.getExternalStorageDirectory(), "artworks_cache")
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// else
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// cacheDir = context.getCacheDir()
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if (!cacheDir!!.exists())
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cacheDir!!.mkdirs()
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}
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private fun getFile(artworkId: String): File {
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return File(cacheDir, "$artworkId.png")
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}
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fun getBitmap(artworkId: String): Bitmap? {
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return try {
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BitmapFactory.decodeFile(getFile(artworkId).absolutePath)
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} catch (E: Exception) {
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E.printStackTrace()
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fun getDataSubstitution(batch: String): CardDataSubstitution? {
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return if (CardDataSubstitution.verifySignature(batch, dataSubstitution, dataSubstitutionSignature)) {
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Gson().fromJson(dataSubstitution, CardDataSubstitution::class.java)
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} else {
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null
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}
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}
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fun saveBitmap(artworkId: String, data: ByteArray) {
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val file = getFile(artworkId)
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file.writeBytes(data)
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class CardDataSubstitution(
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val tokenSymbol: String?,
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val tokenDecimal: Int?,
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val contractAddress: String?
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) {
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fun applyToCard(card: TangemCard) {
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if (card.tokenSymbol.isNullOrBlank()) card.tokenSymbol = tokenSymbol
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if (tokenDecimal != null) card.tokensDecimal = tokenDecimal
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if (card.contractAddress.isNullOrBlank()) card.contractAddress = contractAddress
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}
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companion object {
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private val substitutionPublicKey: ByteArray = byteArrayOf(0x00, 0x00)
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fun verifySignature(batch: String, substitutionData: String?, substitutionSignature: String?): Boolean {
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if (substitutionData == null && substitutionSignature == null) return true
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if (substitutionData == null || substitutionSignature == null) return false
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val dataToSign = batch.toByteArray(StandardCharsets.UTF_8) + substitutionData.toByteArray(StandardCharsets.UTF_8)
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return CardCrypto.VerifySignature(substitutionPublicKey, dataToSign, Util.hexToBytes(substitutionSignature))
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}
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}
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}
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fun clear() {
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val files = cacheDir!!.listFiles() ?: return
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for (f in files)
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f.delete()
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}
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}
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companion object {
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const val defaultArtworkId = ""
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}
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}
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