Add filtering by foreign blockchain to API crosschain calls

src/main/java/org/qortal/api/model/crosschain/TradeBotCreateRequest.java

@@ -27,7 +27,7 @@ public class TradeBotCreateRequest {
 	@XmlJavaTypeAdapter(value = org.qortal.api.AmountTypeAdapter.class)
 	public Long bitcoinAmount;
 
-	@Schema(description = "Foreign blockchain. Note: default (BITCOIN) to be removed in the future", example = "BITCOIN", defaultValue = "BITCOIN")
+	@Schema(description = "Foreign blockchain. Note: default (BITCOIN) to be removed in the future", example = "BITCOIN", implementation = SupportedBlockchain.class)
 	public SupportedBlockchain foreignBlockchain;
 
 	@Schema(description = "Foreign blockchain amount wanted in return", example = "0.00864200", type = "number")

src/main/java/org/qortal/api/resource/CrossChainResource.java

@@ -80,7 +80,11 @@ public class CrossChainResource {
 	)
 	@ApiErrors({ApiError.INVALID_CRITERIA, ApiError.REPOSITORY_ISSUE})
 	public List<CrossChainTradeData> getTradeOffers(
-			// TODO: we need a param to limit to specific foreign blockchain(s)
+			@Parameter(
+				description = "Limit to specific blockchain",
+				example = "LITECOIN",
+				schema = @Schema(implementation = SupportedBlockchain.class)
+			) @QueryParam("foreignBlockchain") SupportedBlockchain foreignBlockchain,
 			@Parameter( ref = "limit") @QueryParam("limit") Integer limit,
 			@Parameter( ref = "offset" ) @QueryParam("offset") Integer offset,
 			@Parameter( ref = "reverse" ) @QueryParam("reverse") Boolean reverse) {
@@ -92,7 +96,7 @@ public class CrossChainResource {
 		List<CrossChainTradeData> crossChainTradesData = new ArrayList<>();
 
 		try (final Repository repository = RepositoryManager.getRepository()) {
-			Map<ByteArray, Supplier<ACCT>> acctsByCodeHash = SupportedBlockchain.getAcctMap();
+			Map<ByteArray, Supplier<ACCT>> acctsByCodeHash = SupportedBlockchain.getFilteredAcctMap(foreignBlockchain);
 
 			for (Map.Entry<ByteArray, Supplier<ACCT>> acctInfo : acctsByCodeHash.entrySet()) {
 				byte[] codeHash = acctInfo.getKey().value;
@@ -131,6 +135,11 @@ public class CrossChainResource {
 	)
 	@ApiErrors({ApiError.INVALID_CRITERIA, ApiError.REPOSITORY_ISSUE})
 	public List<CrossChainTradeSummary> getCompletedTrades(
+			@Parameter(
+					description = "Limit to specific blockchain",
+					example = "LITECOIN",
+					schema = @Schema(implementation = SupportedBlockchain.class)
+				) @QueryParam("foreignBlockchain") SupportedBlockchain foreignBlockchain,
 			@Parameter(
 				description = "Only return trades that completed on/after this timestamp (milliseconds since epoch)",
 				example = "1597310000000"
@@ -165,7 +174,7 @@ public class CrossChainResource {
 
 			List<CrossChainTradeSummary> crossChainTrades = new ArrayList<>();
 
-			Map<ByteArray, Supplier<ACCT>> acctsByCodeHash = SupportedBlockchain.getAcctMap();
+			Map<ByteArray, Supplier<ACCT>> acctsByCodeHash = SupportedBlockchain.getFilteredAcctMap(foreignBlockchain);
 
 			for (Map.Entry<ByteArray, Supplier<ACCT>> acctInfo : acctsByCodeHash.entrySet()) {
 				byte[] codeHash = acctInfo.getKey().value;

src/main/java/org/qortal/api/resource/CrossChainTradeBotResource.java

@@ -1,6 +1,7 @@
 package org.qortal.api.resource;
 
 import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
 import io.swagger.v3.oas.annotations.media.ArraySchema;
 import io.swagger.v3.oas.annotations.media.Content;
 import io.swagger.v3.oas.annotations.media.Schema;
@@ -9,12 +10,14 @@ import io.swagger.v3.oas.annotations.responses.ApiResponse;
 import io.swagger.v3.oas.annotations.tags.Tag;
 
 import java.util.List;
+import java.util.stream.Collectors;
 
 import javax.servlet.http.HttpServletRequest;
 import javax.ws.rs.DELETE;
 import javax.ws.rs.GET;
 import javax.ws.rs.POST;
 import javax.ws.rs.Path;
+import javax.ws.rs.QueryParam;
 import javax.ws.rs.core.Context;
 import javax.ws.rs.core.MediaType;
 
@@ -30,6 +33,7 @@ import org.qortal.asset.Asset;
 import org.qortal.controller.tradebot.AcctTradeBot;
 import org.qortal.controller.tradebot.TradeBot;
 import org.qortal.crosschain.ForeignBlockchain;
+import org.qortal.crosschain.SupportedBlockchain;
 import org.qortal.crosschain.ACCT;
 import org.qortal.crosschain.AcctMode;
 import org.qortal.crypto.Crypto;
@@ -65,13 +69,20 @@ public class CrossChainTradeBotResource {
 	)
 	@ApiErrors({ApiError.REPOSITORY_ISSUE})
 	public List<TradeBotData> getTradeBotStates(
-			// TODO: optional filter for foreign blockchain(s)?
-			) {
+			@Parameter(
+					description = "Limit to specific blockchain",
+					example = "LITECOIN",
+					schema = @Schema(implementation = SupportedBlockchain.class)
+				) @QueryParam("foreignBlockchain") SupportedBlockchain foreignBlockchain) {
 		Security.checkApiCallAllowed(request);
 
 		try (final Repository repository = RepositoryManager.getRepository()) {
-			// TODO: maybe sub-class returned trade-bot data according to which trade-bot/ACCT applies?
-			return repository.getCrossChainRepository().getAllTradeBotData();
+			List<TradeBotData> allTradeBotData = repository.getCrossChainRepository().getAllTradeBotData();
+
+			if (foreignBlockchain == null)
+				return allTradeBotData;
+
+			return allTradeBotData.stream().filter(tradeBotData -> tradeBotData.getForeignBlockchain().equals(foreignBlockchain.name())).collect(Collectors.toList());
 		} catch (DataException e) {
 			throw ApiExceptionFactory.INSTANCE.createException(request, ApiError.REPOSITORY_ISSUE, e);
 		}

src/main/java/org/qortal/crosschain/SupportedBlockchain.java

@@ -1,6 +1,7 @@
 package org.qortal.crosschain;
 
 import java.util.Arrays;
+import java.util.Collections;
 import java.util.List;
 import java.util.Map;
 import java.util.function.Supplier;
@@ -50,6 +51,9 @@ public enum SupportedBlockchain {
 			.flatMap(List::stream)
 			.collect(Collectors.toUnmodifiableMap(Triple::getA, Triple::getC));
 
+	private static final Map<String, SupportedBlockchain> blockchainsByName = Arrays.stream(SupportedBlockchain.values())
+			.collect(Collectors.toUnmodifiableMap(Enum::name, blockchain -> blockchain));
+
 	private final List<Triple<String, byte[], Supplier<ACCT>>> supportedAccts;
 
 	SupportedBlockchain(List<Triple<String, byte[], Supplier<ACCT>>> supportedAccts) {
@@ -63,6 +67,25 @@ public enum SupportedBlockchain {
 		return supportedAcctsByCodeHash;
 	}
 
+	public static Map<ByteArray, Supplier<ACCT>> getFilteredAcctMap(SupportedBlockchain blockchain) {
+		if (blockchain == null)
+			return getAcctMap();
+
+		return blockchain.supportedAccts.stream()
+				.collect(Collectors.toUnmodifiableMap(triple -> new ByteArray(triple.getB()), Triple::getC));
+	}
+
+	public static Map<ByteArray, Supplier<ACCT>> getFilteredAcctMap(String specificBlockchain) {
+		if (specificBlockchain == null)
+			return getAcctMap();
+
+		SupportedBlockchain blockchain = blockchainsByName.get(specificBlockchain);
+		if (blockchain == null)
+			return Collections.emptyMap();
+
+		return getFilteredAcctMap(blockchain);
+	}
+
 	public static ACCT getAcctByCodeHash(byte[] codeHash) {
 		ByteArray wrappedCodeHash = new ByteArray(codeHash);
 

src/test/java/org/qortal/test/api/CrossChainApiTests.java

@@ -4,10 +4,13 @@ import org.junit.Before;
 import org.junit.Test;
 import org.qortal.api.ApiError;
 import org.qortal.api.resource.CrossChainResource;
+import org.qortal.crosschain.SupportedBlockchain;
 import org.qortal.test.common.ApiCommon;
 
 public class CrossChainApiTests extends ApiCommon {
 
+	private static final SupportedBlockchain SPECIFIC_BLOCKCHAIN = null;
+
 	private CrossChainResource crossChainResource;
 
 	@Before
@@ -17,12 +20,13 @@ public class CrossChainApiTests extends ApiCommon {
 
 	@Test
 	public void testGetTradeOffers() {
-		assertNoApiError((limit, offset, reverse) -> this.crossChainResource.getTradeOffers(limit, offset, reverse));
+		assertNoApiError((limit, offset, reverse) -> this.crossChainResource.getTradeOffers(SPECIFIC_BLOCKCHAIN, limit, offset, reverse));
 	}
 
 	@Test
 	public void testGetCompletedTrades() {
-		assertNoApiError((limit, offset, reverse) -> this.crossChainResource.getCompletedTrades(System.currentTimeMillis() /*minimumTimestamp*/, limit, offset, reverse));
+		long minimumTimestamp = System.currentTimeMillis();
+		assertNoApiError((limit, offset, reverse) -> this.crossChainResource.getCompletedTrades(SPECIFIC_BLOCKCHAIN, minimumTimestamp, limit, offset, reverse));
 	}
 
 	@Test
@@ -31,8 +35,8 @@ public class CrossChainApiTests extends ApiCommon {
 		Integer offset = null;
 		Boolean reverse = null;
 
-		assertApiError(ApiError.INVALID_CRITERIA, () -> this.crossChainResource.getCompletedTrades(-1L /*minimumTimestamp*/, limit, offset, reverse));
-		assertApiError(ApiError.INVALID_CRITERIA, () -> this.crossChainResource.getCompletedTrades(0L /*minimumTimestamp*/, limit, offset, reverse));
+		assertApiError(ApiError.INVALID_CRITERIA, () -> this.crossChainResource.getCompletedTrades(SPECIFIC_BLOCKCHAIN, -1L /*minimumTimestamp*/, limit, offset, reverse));
+		assertApiError(ApiError.INVALID_CRITERIA, () -> this.crossChainResource.getCompletedTrades(SPECIFIC_BLOCKCHAIN, 0L /*minimumTimestamp*/, limit, offset, reverse));
 	}
 
 }