Updated on 2026-08-14

common/routing/src/main/kotlin/com/tangem/common/routing/deeplink/MarketingDeeplink.kt

@@ -0,0 +1,75 @@
+package com.tangem.common.routing.deeplink
+
+import com.tangem.common.routing.AppRoute
+import com.tangem.common.routing.DeepLinkRoute
+import com.tangem.common.routing.DeepLinkScheme
+import com.tangem.core.analytics.models.AnalyticsParam
+import com.tangem.domain.models.currency.CryptoCurrency
+import com.tangem.domain.models.wallet.UserWalletId
+import com.tangem.domain.onramp.model.OnrampSource
+import java.net.URI
+
+/**
+ * Classification of a marketing-banner deeplink used to decide how a banner tap is routed.
+ *
+ * Only the `tangem://` scheme with a swap/buy host triggers contextual in-app routing; everything
+ * else (external `https://` T&S links, unknown hosts, malformed input) is [EXTERNAL] and handed off
+ * to the generic deeplink launcher. This mirrors iOS `DefaultIncomingLinkParser`, where
+ * `https://tangem.com/...` links always resolve to an external link, not an in-app destination.
+ */
+enum class MarketingDeeplink {
+    /** `tangem://swap` — open swap for the current token. */
+    SWAP,
+
+    /** `tangem://buy` — open onramp for the current token. */
+    BUY,
+
+    /** External or unrecognized link — route through the generic deeplink launcher. */
+    EXTERNAL,
+}
+
+// TODO: [temporary] Banner taps are intercepted in-host and mapped to an AppRoute directly because the
+//  shared tangem://swap and tangem://buy deeplinks open context-less screens (generic swap / BuyCrypto
+//  hub) with no current-token prefill. Replace with targeted swap/onramp deeplinks and drop this
+//  interception: [REDACTED_JIRA]
+/**
+ * Resolves a marketing-banner [link] into a [MarketingDeeplink]. Never throws: malformed input
+ * degrades to [MarketingDeeplink.EXTERNAL].
+ */
+fun resolveMarketingDeeplink(link: String): MarketingDeeplink {
+    val uri = runCatching { URI(link) }.getOrNull() ?: return MarketingDeeplink.EXTERNAL
+
+    if (!uri.scheme.equals(DeepLinkScheme.Tangem.scheme, ignoreCase = true)) {
+        return MarketingDeeplink.EXTERNAL
+    }
+
+    return when (uri.host) {
+        DeepLinkRoute.Swap.host -> MarketingDeeplink.SWAP
+        DeepLinkRoute.Buy.host -> MarketingDeeplink.BUY
+        else -> MarketingDeeplink.EXTERNAL
+    }
+}
+
+/**
+ * Builds the contextual in-app route for a marketing-banner deeplink on a token-scoped screen (staking,
+ * yield, swap, onramp): swap for the current token, or onramp to buy it. Returns `null` for
+ * [MarketingDeeplink.EXTERNAL] so the caller falls back to the generic deeplink launcher.
+ */
+fun MarketingDeeplink.toContextualRoute(
+    userWalletId: UserWalletId,
+    currency: CryptoCurrency,
+    screenSource: AnalyticsParam.ScreensSources,
+    onrampSource: OnrampSource = OnrampSource.MARKETING_BANNER,
+): AppRoute? = when (this) {
+    MarketingDeeplink.SWAP -> AppRoute.Swap(
+        userWalletId = userWalletId,
+        fromCryptoCurrency = currency,
+        screenSource = screenSource.value,
+    )
+    MarketingDeeplink.BUY -> AppRoute.Onramp(
+        userWalletId = userWalletId,
+        currency = currency,
+        source = onrampSource,
+    )
+    MarketingDeeplink.EXTERNAL -> null
+}

common/routing/src/test/kotlin/com/tangem/common/routing/deeplink/MarketingDeeplinkTest.kt

@@ -0,0 +1,42 @@
+package com.tangem.common.routing.deeplink
+
+import com.google.common.truth.Truth.assertThat
+import org.junit.jupiter.api.TestInstance
+import org.junit.jupiter.params.ParameterizedTest
+import org.junit.jupiter.params.provider.MethodSource
+
+@TestInstance(TestInstance.Lifecycle.PER_CLASS)
+internal class MarketingDeeplinkTest {
+
+    @ParameterizedTest
+    @MethodSource("provideTestModels")
+    fun resolveMarketingDeeplink(model: ResolveModel) {
+        // Act
+        val actual = resolveMarketingDeeplink(model.link)
+
+        // Assert
+        assertThat(actual).isEqualTo(model.expected)
+    }
+
+    internal data class ResolveModel(val link: String, val expected: MarketingDeeplink)
+
+    private fun provideTestModels() = listOf(
+        // tangem:// swap/buy -> contextual
+        ResolveModel(link = "tangem://swap", expected = MarketingDeeplink.SWAP),
+        ResolveModel(link = "tangem://buy", expected = MarketingDeeplink.BUY),
+        ResolveModel(link = "tangem://swap?foo=bar", expected = MarketingDeeplink.SWAP),
+        ResolveModel(link = "tangem://buy/extra", expected = MarketingDeeplink.BUY),
+        ResolveModel(link = "TANGEM://swap", expected = MarketingDeeplink.SWAP),
+        // tangem:// other hosts -> external
+        ResolveModel(link = "tangem://token", expected = MarketingDeeplink.EXTERNAL),
+        ResolveModel(link = "tangem://promo", expected = MarketingDeeplink.EXTERNAL),
+        // https T&S links -> external (iOS treats these as .link too)
+        ResolveModel(link = "https://tangem.com/swap", expected = MarketingDeeplink.EXTERNAL),
+        ResolveModel(link = "https://tangem.com/buy", expected = MarketingDeeplink.EXTERNAL),
+        ResolveModel(link = "https://tangem.com/promo/summer", expected = MarketingDeeplink.EXTERNAL),
+        // other schemes / garbage -> external
+        ResolveModel(link = "wc://connect", expected = MarketingDeeplink.EXTERNAL),
+        ResolveModel(link = "not a uri", expected = MarketingDeeplink.EXTERNAL),
+        ResolveModel(link = "", expected = MarketingDeeplink.EXTERNAL),
+    )
+}