feat: 增强 gRPC 支持，优化注册函数和导入处理逻辑

pkg/ast/provider/builder.go

@@ -380,6 +380,18 @@ func (pb *ProviderBuilder) resolveImportDependencies(provider *Provider, context
 		}
 	}
 
+	// For gRPC mode, extract and add imports from the original file's imports
+	if provider.Mode == ProviderModeGrpc && provider.GrpcRegisterFunc != "" {
+		// Extract package alias from gRPC register function name (e.g., "userv1" from "userv1.RegisterUserServiceServer")
+		if pkgAlias := getTypePkgName(provider.GrpcRegisterFunc); pkgAlias != "" {
+			// Look for this package in the original file's imports
+			if importResolution, exists := context.ImportContext.FileImports[pkgAlias]; exists {
+				// Add the import from the original file
+				provider.Imports[importResolution.Path] = pkgAlias
+			}
+		}
+	}
+
 	// Add mode-specific imports
 	modeImports := pb.getModeSpecificImports(provider.Mode)
 	for alias, path := range modeImports {

pkg/ast/provider/parser.go

@@ -368,11 +368,25 @@ func (p *MainParser) applyGrpcCompatibility(provider *Provider) {
 	}
 
 	// Set return type and register function
-	if provider.GrpcRegisterFunc == "" {
-		provider.GrpcRegisterFunc = provider.ReturnType
-	}
+	// Important: Save the original return type before setting it to contracts.Initial
+	originalReturnType := provider.ReturnType
 	provider.ReturnType = "contracts.Initial"
 
+	// Set gRPC register function name if not already set
+	if provider.GrpcRegisterFunc == "" {
+		if originalReturnType != "" && strings.Contains(originalReturnType, ".") {
+			// User specified a complete register function name, like userv1.RegisterUserServiceServer
+			provider.GrpcRegisterFunc = originalReturnType
+		} else {
+			// Generate default gRPC register function name
+			// Example: UserService -> RegisterUserServiceServer
+			provider.GrpcRegisterFunc = "Register" + strings.TrimPrefix(originalReturnType, "*") + "Server"
+		}
+	}
+
+	// Note: Package import handling for gRPC register functions is now done
+	// in resolveImportDependencies to ensure access to original file imports
+
 	// Add gRPC injection parameter
 	provider.InjectParams["__grpc"] = InjectParam{
 		Star:         "*",

pkg/ast/provider/parser_interface.go

@@ -498,7 +498,7 @@ func (p *GoParser) parseProviderDecl(filePath string, fileNode *ast.File, decl a
 	}
 
 	// Handle special provider modes
-	p.handleProviderModes(provider, providerDoc.Mode)
+	p.handleProviderModes(provider, providerDoc.Mode, imports)
 
 	// Add source location if enabled
 	if p.config.SourceLocations {
@@ -593,20 +593,41 @@ func (p *GoParser) parseFieldType(expr ast.Expr, imports map[string]string) (sta
 }
 
 // handleProviderModes applies special handling for different provider modes
-func (p *GoParser) handleProviderModes(provider *Provider, mode string) {
+func (p *GoParser) handleProviderModes(provider *Provider, mode string, imports map[string]string) {
 	moduleName := gomod.GetModuleName()
 
 	switch provider.Mode {
 	case ProviderModeGrpc:
 		modePkg := moduleName + "/providers/grpc"
 		provider.ProviderGroup = "atom.GroupInitial"
-		provider.GrpcRegisterFunc = provider.ReturnType
+		// Save the original return type before changing it
+		originalReturnType := provider.ReturnType
+		provider.GrpcRegisterFunc = originalReturnType
 		provider.ReturnType = "contracts.Initial"
 
 		provider.Imports[atomPackage("")] = ""
 		provider.Imports[atomPackage("contracts")] = ""
 		provider.Imports[modePkg] = ""
 
+		// Extract and add gRPC service package import
+		if originalReturnType != "" && strings.Contains(originalReturnType, ".") {
+			// Extract package alias from gRPC register function name (e.g., "userv1" from "userv1.RegisterUserServiceServer")
+			if pkgAlias := getTypePkgName(originalReturnType); pkgAlias != "" {
+				// Look for this package in the original file's imports
+				if importPath, exists := imports[pkgAlias]; exists {
+					// Use the exact import path from the original file
+					provider.Imports[importPath] = pkgAlias
+				} else {
+					// Fallback: try to infer the common pattern
+					if moduleName != "" {
+						// Common pattern: {module}/pkg/proto/{service}/v1
+						servicePkg := moduleName + "/pkg/proto/" + strings.ToLower(pkgAlias)
+						provider.Imports[servicePkg] = pkgAlias
+					}
+				}
+			}
+		}
+
 		provider.InjectParams["__grpc"] = InjectParam{
 			Star:         "*",
 			Type:         "Grpc",

pkg/ast/provider/provider.go

@@ -311,7 +311,23 @@ func Parse(source string) []Provider {
 			provider.Imports[modePkg] = ""
 
 			provider.ProviderGroup = "atom.GroupInitial"
-			provider.GrpcRegisterFunc = provider.ReturnType
+
+			// Handle gRPC register function correctly
+			if providerDoc.ReturnType != "" && strings.Contains(providerDoc.ReturnType, ".") {
+				// User specified a complete register function name, like userv1.RegisterUserServiceServer
+				provider.GrpcRegisterFunc = providerDoc.ReturnType
+				// Extract package information and add import
+				if pkgAlias := getTypePkgName(providerDoc.ReturnType); pkgAlias != "" {
+					if importPkg, ok := imports[pkgAlias]; ok {
+						provider.Imports[importPkg] = pkgAlias
+					}
+				}
+			} else {
+				// Generate default gRPC register function name
+				// Example: UserService -> RegisterUserServiceServer
+				provider.GrpcRegisterFunc = "Register" + strings.TrimPrefix(provider.ReturnType, "*") + "Server"
+			}
+
 			provider.ReturnType = "contracts.Initial"
 
 			provider.InjectParams["__grpc"] = InjectParam{