✨ Upgrade Go version to 1.23.0 and update dependencies. Introduce new application structure with Clean Architecture principles, including message processing, NATS integration, and PostgreSQL repository. Add configuration management using Koanf and structured logging with Zap. Remove legacy GraphQL integration and related files. Implement dependency injection with Google Wire.

internal/app/processor.go

@@ -0,0 +1,80 @@
+package app
+
+import (
+	"context"
+	"caatsm/internal/adapter"
+	"caatsm/internal/adapter/parser"
+	"fmt"
+	"go.uber.org/zap"
+)
+
+// MessageProcessor handles message processing
+type MessageProcessor struct {
+	parser     parser.Parser
+	repository adapter.Repository
+	publisher  adapter.Publisher
+	logger     *zap.Logger
+}
+
+// NewMessageProcessor creates a new message processor
+func NewMessageProcessor(
+	parser parser.Parser,
+	repository adapter.Repository,
+	publisher adapter.Publisher,
+	logger *zap.Logger,
+) *MessageProcessor {
+	return &MessageProcessor{
+		parser:     parser,
+		repository: repository,
+		publisher:  publisher,
+		logger:     logger,
+	}
+}
+
+// Handle processes a message
+func (p *MessageProcessor) Handle(ctx context.Context, raw []byte, msgID string) error {
+	if raw == nil || len(raw) == 0 {
+		return fmt.Errorf("empty message")
+	}
+
+	// Parse the message
+	parsed := p.parser.Parse(string(raw))
+	if parsed == nil {
+		return fmt.Errorf("parser returned nil")
+	}
+
+	// Set the message ID from NATS
+	parsed.Uuid = msgID
+
+	// Log parsing result
+	if !parsed.Parsed {
+		p.logger.Info("Message not parsed",
+			zap.String("msg_id", msgID),
+			zap.String("content", parsed.Content),
+		)
+	} else {
+		p.logger.Info("Message parsed successfully",
+			zap.String("msg_id", msgID),
+			zap.String("message_id", parsed.MessageID),
+			zap.String("category", parsed.Category),
+		)
+	}
+
+	// Insert into database
+	if err := p.repository.InsertOne(ctx, parsed); err != nil {
+		return fmt.Errorf("failed to insert message: %w", err)
+	}
+
+	// Publish parsed message
+	if err := p.publisher.Publish(parsed); err != nil {
+		// Log error but don't fail the entire operation
+		p.logger.Error("Failed to publish message",
+			zap.String("msg_id", msgID),
+			zap.Error(err),
+		)
+		// Return error to trigger NAK and retry
+		return fmt.Errorf("failed to publish message: %w", err)
+	}
+
+	return nil
+}