Update on-ramp providers and add purchase method screen

android/brave_java_resources.gni

@@ -169,6 +169,7 @@ brave_java_resources = [
   "java/res/drawable-night-xhdpi/ic_cookie_background.png",
   "java/res/drawable-night-xxhdpi/ic_cookie_background.png",
   "java/res/drawable-night-xxxhdpi/ic_cookie_background.png",
+  "java/res/drawable-night/sardine_logo.xml",
   "java/res/drawable-nodpi/dylan_malval_sea_min.webp",
   "java/res/drawable-nodpi/eth.png",
   "java/res/drawable-nodpi/fee_icon.png",
@@ -692,6 +693,7 @@ brave_java_resources = [
   "java/res/drawable/radio_button_holo_bg.xml",
   "java/res/drawable/radio_button_selected_bg.xml",
   "java/res/drawable/radiobutton_background.xml",
+  "java/res/drawable/ramp_logo.xml",
   "java/res/drawable/rating_bottomsheet_background.xml",
   "java/res/drawable/rating_news_button_background.xml",
   "java/res/drawable/recovery_phrase_bg.xml",
@@ -720,6 +722,7 @@ brave_java_resources = [
   "java/res/drawable/rounded_top_corners.xml",
   "java/res/drawable/rounded_wallet_edittext.xml",
   "java/res/drawable/rounded_white_holo_bg.xml",
+  "java/res/drawable/sardine_logo.xml",
   "java/res/drawable/selected_dot.xml",
   "java/res/drawable/selected_indicator.xml",
   "java/res/drawable/set_default_rounded_button_disabled.xml",
@@ -731,6 +734,7 @@ brave_java_resources = [
   "java/res/drawable/tab_selector.xml",
   "java/res/drawable/tip_amount.xml",
   "java/res/drawable/toggle_text_color_selector.xml",
+  "java/res/drawable/transak_logo.xml",
   "java/res/drawable/transparent_bg_bordered.xml",
   "java/res/drawable/twitter_button_background.xml",
   "java/res/drawable/unverified_48_rounded_bg.xml",
@@ -769,6 +773,7 @@ brave_java_resources = [
   "java/res/layout/activity_network_selector.xml",
   "java/res/layout/activity_nft_detail.xml",
   "java/res/layout/activity_onboarding.xml",
+  "java/res/layout/activity_select_purchase_method.xml",
   "java/res/layout/activity_split_tunnel.xml",
   "java/res/layout/activity_welcome_onboarding.xml",
   "java/res/layout/application_item_layout.xml",

android/brave_java_sources.gni

@@ -45,6 +45,7 @@ brave_java_sources = [
   "../../brave/android/java/org/chromium/chrome/browser/app/BraveActivity.java",
   "../../brave/android/java/org/chromium/chrome/browser/app/appmenu/AppMenuIconRowFooter.java",
   "../../brave/android/java/org/chromium/chrome/browser/app/appmenu/BraveAppMenuPropertiesDelegateImpl.java",
+  "../../brave/android/java/org/chromium/chrome/browser/app/domain/BuyModel.java",
   "../../brave/android/java/org/chromium/chrome/browser/app/domain/CryptoModel.java",
   "../../brave/android/java/org/chromium/chrome/browser/app/domain/CryptoSharedActions.java",
   "../../brave/android/java/org/chromium/chrome/browser/app/domain/CryptoSharedData.java",
@@ -92,6 +93,7 @@ brave_java_sources = [
   "../../brave/android/java/org/chromium/chrome/browser/crypto_wallet/activities/BuySendSwapActivity.java",
   "../../brave/android/java/org/chromium/chrome/browser/crypto_wallet/activities/NetworkSelectorActivity.java",
   "../../brave/android/java/org/chromium/chrome/browser/crypto_wallet/activities/NftDetailActivity.java",
+  "../../brave/android/java/org/chromium/chrome/browser/crypto_wallet/activities/SelectPurchaseMethodActivity.java",
   "../../brave/android/java/org/chromium/chrome/browser/crypto_wallet/adapters/AccountSpinnerAdapter.java",
   "../../brave/android/java/org/chromium/chrome/browser/crypto_wallet/adapters/ApproveTxFragmentPageAdapter.java",
   "../../brave/android/java/org/chromium/chrome/browser/crypto_wallet/adapters/CreateAccountAdapter.java",

android/java/AndroidManifest.xml

@@ -86,6 +86,11 @@
     android:screenOrientation="sensorPortrait"
     tools:ignore="LockedOrientationActivity"/>
 
+<activity android:name="org.chromium.chrome.browser.crypto_wallet.activities.SelectPurchaseMethodActivity"
+    android:theme="@style/Theme.Chromium.Activity"
+    android:screenOrientation="sensorPortrait"
+    tools:ignore="LockedOrientationActivity"/>
+
 <activity android:name="org.chromium.chrome.browser.crypto_wallet.activities.AccountSelectorActivity"
     android:theme="@style/Theme.Chromium.Activity"
     android:screenOrientation="sensorPortrait"

android/java/org/chromium/chrome/browser/app/domain/BuyModel.java

@@ -0,0 +1,86 @@
+/* Copyright (c) 2023 The Brave Authors. All rights reserved.
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+package org.chromium.chrome.browser.app.domain;
+
+import android.content.res.Resources;
+import android.text.TextUtils;
+
+import androidx.core.os.ConfigurationCompat;
+
+import org.chromium.brave_wallet.mojom.AssetRatioService;
+import org.chromium.brave_wallet.mojom.BlockchainRegistry;
+import org.chromium.brave_wallet.mojom.NetworkInfo;
+import org.chromium.brave_wallet.mojom.OnRampProvider;
+import org.chromium.chrome.browser.crypto_wallet.util.AssetUtils;
+import org.chromium.chrome.browser.crypto_wallet.util.JavaUtils;
+import org.chromium.chrome.browser.crypto_wallet.util.TokenUtils;
+import org.chromium.chrome.browser.crypto_wallet.util.WalletConstants;
+import org.chromium.mojo.bindings.Callbacks.Callback1;
+
+import java.util.Locale;
+
+public class BuyModel {
+    public static final int[] SUPPORTED_RAMP_PROVIDERS = {
+            OnRampProvider.RAMP, OnRampProvider.SARDINE, OnRampProvider.TRANSAK};
+
+    private final Object mLock = new Object();
+    private AssetRatioService mAssetRatioService;
+    private BlockchainRegistry mBlockchainRegistry;
+
+    public BuyModel(AssetRatioService assetRatioService, BlockchainRegistry blockchainRegistry) {
+        mAssetRatioService = assetRatioService;
+        mBlockchainRegistry = blockchainRegistry;
+    }
+
+    public boolean isAvailable(int onRampProvider, Resources resources) {
+        if (onRampProvider == OnRampProvider.SARDINE) {
+            // Sardine services are available only for US locales.
+            Locale currentLocale =
+                    ConfigurationCompat.getLocales(resources.getConfiguration()).get(0);
+            return (currentLocale != null && currentLocale.getCountry().equals("US"));
+        }
+        return true;
+    }
+
+    public void getBuyUrl(int onRampProvider, String chainId, String from, String symbol,
+            String amount, String contractAddress, OnRampCallback callback) {
+        if (onRampProvider == OnRampProvider.RAMP) {
+            // Ramp.Network is a special case that requires a modified asset symbol.
+            symbol = AssetUtils.mapToRampNetworkSymbol(chainId, symbol, contractAddress);
+        }
+        mAssetRatioService.getBuyUrlV1(onRampProvider, chainId, from, symbol, amount,
+                WalletConstants.CURRENCY_CODE_USD, (url, error) -> {
+                    if (error != null && !error.isEmpty()) {
+                        callback.OnUrlReady(null);
+                        return;
+                    }
+                    callback.OnUrlReady(url);
+                });
+    }
+
+    public void isBuySupported(NetworkInfo selectedNetwork, String assetSymbol,
+            String contractAddress, String chainId, int[] rampProviders,
+            Callback1<Boolean> callback) {
+        TokenUtils.getBuyTokensFiltered(mBlockchainRegistry, selectedNetwork,
+                TokenUtils.TokenType.ALL, rampProviders, tokens -> {
+                    callback.call(JavaUtils.includes(tokens,
+                            iToken
+                            -> AssetUtils.Filters.isSameToken(
+                                    iToken, assetSymbol, contractAddress, chainId)));
+                });
+    }
+
+    void resetServices(AssetRatioService assetRatioService, BlockchainRegistry blockchainRegistry) {
+        synchronized (mLock) {
+            mAssetRatioService = assetRatioService;
+            mBlockchainRegistry = blockchainRegistry;
+        }
+    }
+
+    public interface OnRampCallback {
+        void OnUrlReady(String url);
+    }
+}

android/java/org/chromium/chrome/browser/app/domain/CryptoModel.java

@@ -78,6 +78,7 @@ public class CryptoModel {
 
     private NetworkModel mNetworkModel;
     private PortfolioModel mPortfolioModel;
+    private BuyModel mBuyModel;
     // Todo: create method to create and return new models for Asset, Account,
     //  TransactionConfirmation, SwapModel, AssetModel, SendModel
 
@@ -134,6 +135,9 @@ public void resetServices(Context context, TxService mTxService, KeyringService
             mPortfolioModel.resetServices(context, mTxService, mKeyringService, mBlockchainRegistry,
                     mJsonRpcService, mEthTxManagerProxy, mSolanaTxManagerProxy, mBraveWalletService,
                     mAssetRatioService);
+            if (mBuyModel != null) {
+                mBuyModel.resetServices(mAssetRatioService, mBlockchainRegistry);
+            }
         }
         init();
     }
@@ -273,6 +277,13 @@ public NetworkModel getNetworkModel() {
         return mNetworkModel;
     }
 
+    public BuyModel getBuyModel() {
+        if (mBuyModel == null) {
+            mBuyModel = new BuyModel(mAssetRatioService, mBlockchainRegistry);
+        }
+        return mBuyModel;
+    }
+
     public PortfolioModel getPortfolioModel() {
         return mPortfolioModel;
     }
@@ -324,21 +335,10 @@ public void setAccountInfosFromKeyRingModel(
         mNetworkModel.setAccountInfosFromKeyRingModel(accountInfosFromKeyRingModel);
     }
 
-    // TODO: Move to BuyModel class
-    public void isBuySupported(NetworkInfo selectedNetwork, String assetSymbol,
-            String contractAddress, String chainId, Callback1<Boolean> callback) {
-        TokenUtils.getBuyTokensFiltered(
-                mBlockchainRegistry, selectedNetwork, TokenUtils.TokenType.ALL, tokens -> {
-                    callback.call(JavaUtils.includes(tokens,
-                            iToken
-                            -> AssetUtils.Filters.isSameToken(
-                                    iToken, assetSymbol, contractAddress, chainId)));
-                });
-    }
-
     // Clear buy send swap model
     public void clearBSS() {
         mSendModel = null;
+        mBuyModel = null;
     }
 
     /*

android/java/org/chromium/chrome/browser/crypto_wallet/activities/AssetDetailActivity.java

@@ -40,6 +40,7 @@
 import org.chromium.brave_wallet.mojom.TransactionInfo;
 import org.chromium.chrome.R;
 import org.chromium.chrome.browser.app.BraveActivity;
+import org.chromium.chrome.browser.app.domain.BuyModel;
 import org.chromium.chrome.browser.app.domain.WalletModel;
 import org.chromium.chrome.browser.crypto_wallet.BlockchainRegistryFactory;
 import org.chromium.chrome.browser.crypto_wallet.adapters.WalletCoinAdapter;
@@ -506,8 +507,9 @@ private void showHideBuyUi() {
 
         LiveDataUtil.observeOnce(mWalletModel.getCryptoModel().getNetworkModel().mDefaultNetwork,
                 selectedNetwork -> {
-                    mWalletModel.getCryptoModel().isBuySupported(selectedNetwork, mAssetSymbol,
-                            mContractAddress, mChainId, isBuyEnabled -> {
+                    mWalletModel.getCryptoModel().getBuyModel().isBuySupported(selectedNetwork,
+                            mAssetSymbol, mContractAddress, mChainId,
+                            BuyModel.SUPPORTED_RAMP_PROVIDERS, isBuyEnabled -> {
                                 if (isBuyEnabled) {
                                     AndroidUtils.show(mBtnBuy);
                                 } else {

android/java/org/chromium/chrome/browser/crypto_wallet/activities/BuySendSwapActivity.java

@@ -971,18 +971,11 @@ public void onTextChanged(CharSequence s, int start, int before, int count) {
                             });
                 }
             } else if (mActivityType == ActivityType.BUY) {
-                assert mBlockchainRegistry != null;
-                String symbol = AssetUtils.mapToRampNetworkSymbol(mCurrentBlockchainToken);
-                mBlockchainRegistry.getBuyUrl(OnRampProvider.RAMP, mCurrentBlockchainToken.chainId,
-                        from, symbol, amount, (url, error) -> {
-                            if (error != null && !error.isEmpty() && Utils.isDebuggable(this)) {
-                                Log.e(TAG, "Could not get buy URL: " + error);
-                                return;
-                            }
+                Intent selectPurchaseMethodIntent = SelectPurchaseMethodActivity.getIntent(this,
+                        mCurrentBlockchainToken.chainId, from, mCurrentBlockchainToken.symbol,
+                        mCurrentBlockchainToken.contractAddress, amount);
+                startActivity(selectPurchaseMethodIntent);
 
-                            TabUtils.openUrlInNewTab(false, url);
-                            TabUtils.bringChromeTabbedActivityToTheTop(this);
-                        });
             } else if (mActivityType == ActivityType.SWAP) {
                 if (mCurrentBlockchainToken != null) {
                     String btnText = mBtnBuySendSwap.getText().toString();