Add Flags Assets and Update Configuration

- Introduced multiple SVG flag assets to the project, enhancing the visual representation of country flags.
- Updated the configuration file to include a new path for the flags assets, ensuring proper access and organization.
- Modified the main application to accommodate the new flags path, improving the overall asset management in the application.

internal/assets/service.go

@@ -0,0 +1,95 @@
+package assets
+
+import (
+	"context"
+	"fmt"
+	"strings"
+
+	"tm/pkg/logger"
+)
+
+// Service defines business logic for flag operations
+type Service interface {
+	// Get flag as SVG content only
+	GetFlagSVG(ctx context.Context, countryCode string) string
+}
+
+// flagService implements the Service interface
+type flagService struct {
+	logger    logger.Logger
+	flagsPath string
+}
+
+// NewFlagService creates a new flag service
+func NewFlagService(logger logger.Logger, flagsPath string) Service {
+	return &flagService{
+		logger:    logger,
+		flagsPath: flagsPath,
+	}
+}
+
+// GetFlagSVG retrieves only the SVG content for a flag
+func (s *flagService) GetFlagSVG(ctx context.Context, countryCode string) string {
+	s.logger.Info("Getting flag SVG for country", map[string]interface{}{
+		"country_code": countryCode,
+	})
+
+	// Normalize country code
+	countryCode = strings.ToUpper(countryCode)
+
+	defaultFlag, err := GetFlagAsset(s.flagsPath, "eu")
+	if err != nil {
+		s.logger.Error("Failed to get default flag SVG", map[string]interface{}{
+			"country_code": countryCode,
+			"error":        err.Error(),
+		})
+		return s.getDefaultFlag()
+	}
+
+	// Get ISO code
+	isoCode := GetISOCode(countryCode)
+
+	// Get SVG data
+	svgData, err := s.getFlagSVG(isoCode)
+	if err != nil {
+		s.logger.Error("Failed to get flag SVG", map[string]interface{}{
+			"country_code": countryCode,
+			"iso_code":     isoCode,
+			"error":        err.Error(),
+		})
+		return string(defaultFlag)
+	}
+
+	s.logger.Info("Successfully retrieved flag SVG", map[string]interface{}{
+		"country_code": countryCode,
+		"iso_code":     isoCode,
+	})
+
+	return svgData
+}
+
+// getFlagSVG retrieves the SVG content for a given ISO code
+func (s *flagService) getFlagSVG(isoCode string) (string, error) {
+	// Try to get from filesystem
+	svgData, err := GetFlagAsset(s.flagsPath, isoCode)
+	if err == nil {
+		return string(svgData), nil
+	}
+
+	// If not found in filesystem, return error
+	s.logger.Warn("Flag not found in filesystem", map[string]interface{}{
+		"iso_code": isoCode,
+		"path":     s.flagsPath,
+	})
+
+	return "", fmt.Errorf("failed to get flag SVG, %v from %v", isoCode, s.flagsPath)
+}
+
+// getDefaultFlag returns a default flag SVG when all fallbacks fail
+func (s *flagService) getDefaultFlag() string {
+	// Return a simple default flag SVG
+	return `<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 60 30">
+  <rect width="60" height="30" fill="#012169"/>
+  <text x="30" y="20" text-anchor="middle" fill="white" font-family="Arial" font-size="12">EU</text>
+</svg>`
+}