BAMS initial project structure

backend/internal/services/audit/audit.go

@@ -0,0 +1,74 @@
+package audit
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"path/filepath"
+	"time"
+
+	"github.com/bams/backend/internal/config"
+	"github.com/bams/backend/internal/logger"
+)
+
+type AuditEntry struct {
+	Timestamp time.Time `json:"timestamp"`
+	User      string    `json:"user"`
+	Action    string    `json:"action"`
+	Resource  string    `json:"resource"`
+	Result    string    `json:"result"` // "success" or "failure"
+	Details   string    `json:"details,omitempty"`
+}
+
+type Service struct {
+	config  *config.Config
+	logger  *logger.Logger
+	logFile *os.File
+}
+
+func NewService(cfg *config.Config, log *logger.Logger) *Service {
+	auditDir := filepath.Join(cfg.DataDir, "audit")
+	os.MkdirAll(auditDir, 0755)
+
+	logPath := filepath.Join(auditDir, fmt.Sprintf("audit-%s.log", time.Now().Format("2006-01-02")))
+	file, err := os.OpenFile(logPath, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0640)
+	if err != nil {
+		log.Error("Failed to open audit log", "error", err)
+	}
+
+	return &Service{
+		config:  cfg,
+		logger:  log,
+		logFile: file,
+	}
+}
+
+func (s *Service) Log(user, action, resource, result, details string) {
+	entry := AuditEntry{
+		Timestamp: time.Now(),
+		User:      user,
+		Action:    action,
+		Resource:  resource,
+		Result:    result,
+		Details:   details,
+	}
+
+	data, err := json.Marshal(entry)
+	if err != nil {
+		s.logger.Error("Failed to marshal audit entry", "error", err)
+		return
+	}
+
+	if s.logFile != nil {
+		s.logFile.WriteString(string(data) + "\n")
+		s.logFile.Sync()
+	}
+
+	s.logger.Info("Audit log", "user", user, "action", action, "resource", resource, "result", result)
+}
+
+func (s *Service) Close() {
+	if s.logFile != nil {
+		s.logFile.Close()
+	}
+}