Improve SDK build process and Go client config

Added linguist-generated attribute for SDK clients in .gitattributes to hide them in GitHub diffs. Enhanced utils/sdk/Makefile with target-specific hooks, improved ignore file handling, and refined Go client build steps. Updated Go SDK config to use 'lthn' as package name and set isGoSubmodule property.

.gitattributes

@@ -1,2 +1,5 @@
 .git* export-ignore
 /CMakeLists.txt export-subst
+
+# Mark auto-generated SDK clients as "generated" to hide them in GitHub diffs
+utils/sdk/client/** linguist-generated=true

Makefile

@@ -190,3 +190,4 @@ tags:
 	ctags -R --sort=1 --c++-kinds=+p --fields=+iaS --extra=+q --language-force=C++ src contrib tests/gtest
 
 .PHONY: all release upload-conan-cache docs docs-dev configure static static-release test test-release test-debug clean tags conan-profile-detect get-conan $(PROFILES) sdk $(SDK_TARGETS)
+.PHONY: go-client

utils/sdk/Makefile

@@ -1,9 +1,29 @@
 PACKAGE_VERSION?=6.0.1
 BASE_DIR:=$(CURDIR)
-BUILD_DIR:=$(BASE_DIR)/../../build/packages
+# Default build directory. Can be overridden from the parent Makefile.
+# e.g., `make sdk BUILD_DIR=client` will output to the `client/` directory.
+BUILD_DIR?=$(BASE_DIR)/../../build/packages
 SDK_TARGETS := $(patsubst packages/%.json,%,$(wildcard packages/*.json))
 
-# Default target to build all SDKs. This is the main entry point.
+# --- Target-Specific Hooks ---
+# Define pre- and post-build steps for specific languages.
+# By default, these hooks are empty.
+
+PRE_BUILD_HOOK  = @true
+POST_BUILD_HOOK = @true
+
+ # For the 'go' target, create an ignore file to prevent unwanted files from being generated.
+ go: PRE_BUILD_HOOK = @echo "--> Creating .openapi-generator-ignore file for Go client"; \
+ 	echo "go.sum" >> $(BUILD_DIR)/go/.openapi-generator-ignore
+
+# For the 'go' target, define specific post-build steps.
+go: POST_BUILD_HOOK = (cd $(BUILD_DIR)/go && go mod edit -module github.com/letheanVPN/blockchain/utils/sdk/client/go && go mod tidy)
+
+# For the 'go' target, set the generator name correctly.
+go: GENERATOR_NAME = go
+
+# --- Main Targets ---
+
 all: build
 
 build: $(SDK_TARGETS)
@@ -12,19 +32,28 @@ build: $(SDK_TARGETS)
 # Rule to build each SDK package using OpenAPI Generator.
 # It reads the corresponding JSON config file and generates the SDK in the build directory.
 $(SDK_TARGETS): %: packages/%.json
+	# Default generator name is the target name itself.
+	$(eval GENERATOR_NAME = $@)
+	@echo "--> Creating .openapi-generator-ignore file"
+	@echo "git_push.sh" > "$(BUILD_DIR)/$@/.openapi-generator-ignore"
+	@echo ".travis.yml" >> "$(BUILD_DIR)/$@/.openapi-generator-ignore"
+	@echo "README.md" >> "$(BUILD_DIR)/$@/.openapi-generator-ignore"
+
 	@echo "--- Building package $@ with version $(PACKAGE_VERSION) ---"
+	# Run pre-build hook
+	$(PRE_BUILD_HOOK)
 	rm -rf "$(BUILD_DIR)/$@/*"
 	export TS_POST_PROCESS_FILE="/usr/local/bin/prettier --write" && \
-	openapi-generator generate --skip-validate-spec \
+	openapi-generator generate  --minimal-update --git-host "github.com" --git-repo-id "blockchain" --git-user-id "letheanVPN" \
 		-i "$(BASE_DIR)/spec/oas-3.0.0.json" \
-		-g "$@" \
+		-g "$(GENERATOR_NAME)" \
 		-o "$(BUILD_DIR)/$@" \
 		-c "$<" \
 		--artifact-version "$(PACKAGE_VERSION)" \
-		--group-id "lethean" \
-		-p packageVersion="$(PACKAGE_VERSION)" \
-		--global-property "apiTests=true" \
-		--additional-properties=npmVersion="$(PACKAGE_VERSION)",artifactVersion="$(PACKAGE_VERSION)"
+		--package-name "lthn"
+	# Run post-build hook
+	@echo "--> Running Post Build..."
+	$(POST_BUILD_HOOK)
 
 # Phony targets to avoid conflicts with file names and to ensure they always run.
 .PHONY: all build $(SDK_TARGETS)

utils/sdk/packages/go.json

@@ -1,6 +1,7 @@
 {
   "additionalProperties": {
-    "packageName": "lethean-chain-sdk-go",
-    "generateInterfaces": true
+    "packageName": "lthn",
+    "generateInterfaces": true,
+    "isGoSubmodule": true
   }
 }