Add JSON and HTML writers for reporting Hunter findings

internal/pkg/writer/json.go

@@ -1 +1,81 @@
 package writer
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"path/filepath"
+	"rmm-hunter/internal/pkg"
+	"rmm-hunter/internal/pkg/writer/disposition"
+	"rmm-hunter/internal/suspicious"
+	"time"
+)
+
+type JSONReport struct {
+	ReportName  string                   `json:"reportName"`
+	GeneratedAt string                   `json:"generatedAt"`
+	RiskRating  *disposition.Disposition `json:"riskRating"`
+	Findings    interface{}              `json:"findings"`
+}
+
+// WriteJSONReport generates a JSON report from Hunter findings
+func WriteJSONReport(sus *suspicious.Suspicious, opts *pkg.RunOptions) error {
+	if sus == nil {
+		return fmt.Errorf("suspicious instance is nil")
+	}
+
+	if opts == nil {
+		opts = &pkg.RunOptions{Name: "rmm-hunter-report"}
+	}
+
+	if opts.Name == "" {
+		opts.Name = "rmm-hunter-report"
+	}
+
+	// Calculate risk disposition
+	riskRating := disposition.CalculateDisposition(sus)
+
+	// Create report structure
+	report := JSONReport{
+		ReportName:  opts.Name,
+		GeneratedAt: time.Now().UTC().Format(time.RFC3339),
+		RiskRating:  riskRating,
+		Findings:    safeFindings(sus),
+	}
+
+	// Marshal to JSON
+	jsonData, err := json.MarshalIndent(report, "", "  ")
+	if err != nil {
+		return fmt.Errorf("failed to marshal JSON: %w", err)
+	}
+
+	// Ensure output directory exists
+	filename := fmt.Sprintf("%s.json", opts.Name)
+	if err := ensureDir(filepath.Dir(filename)); err != nil {
+		return fmt.Errorf("failed to create output directory: %w", err)
+	}
+
+	// Write to file
+	if err := os.WriteFile(filename, jsonData, 0644); err != nil {
+		return fmt.Errorf("failed to write JSON file: %w", err)
+	}
+
+	fmt.Printf("[+] JSON report written to: %s\n", filename)
+	return nil
+}
+
+// safeFindings ensures all findings are safe for JSON serialization
+func safeFindings(sus interface{}) interface{} {
+	if sus == nil {
+		return map[string]interface{}{}
+	}
+	return sus
+}
+
+// ensureDir creates directory if it doesn't exist
+func ensureDir(dir string) error {
+	if dir == "" || dir == "." {
+		return nil
+	}
+	return os.MkdirAll(dir, 0755)
+}