Refactor code structure and remove redundant changes

src-old/services/reports/mappers.ts

@@ -0,0 +1,90 @@
+/**
+ * Data transformation functions for Reports API
+ * Handles bidirectional mapping between frontend (Supabase) and backend (Django) formats
+ */
+
+import type {
+  Report,
+  LegacyReport,
+  SubmitReportData,
+  LegacySubmitReportData,
+} from './types';
+
+/**
+ * Map legacy frontend submission data to Django format
+ * Converts Supabase field names to Django field names
+ * 
+ * @param data - Report submission data with Supabase field names
+ * @returns Report submission data with Django field names
+ */
+export function mapSubmitReportToBackend(
+  data: LegacySubmitReportData
+): SubmitReportData {
+  return {
+    entity_type: data.reported_entity_type,
+    entity_id: data.reported_entity_id,
+    report_type: data.report_type,
+    description: data.reason || undefined,
+  };
+}
+
+/**
+ * Map Django report response to legacy frontend format
+ * Converts Django field names to Supabase field names for backward compatibility
+ * Adds synthetic profile structures from email data
+ * 
+ * @param report - Report data from Django API
+ * @returns Report data in legacy Supabase format
+ */
+export function mapReportToLegacy(report: Report): LegacyReport {
+  return {
+    id: report.id,
+    reported_entity_type: report.entity_type,
+    reported_entity_id: report.entity_id,
+    report_type: report.report_type,
+    reason: report.description,
+    status: report.status,
+    reporter_id: report.reported_by_id,
+    reviewed_by: report.reviewed_by_id,
+    reviewed_at: report.reviewed_at,
+    resolution_notes: report.resolution_notes,
+    created_at: report.created_at,
+    updated_at: report.updated_at,
+    // Create synthetic profile objects from email data
+    reporter_profile: report.reported_by_email
+      ? {
+          username: report.reported_by_email.split('@')[0],
+          display_name: null,
+        }
+      : null,
+    reviewer_profile: report.reviewed_by_email
+      ? {
+          username: report.reviewed_by_email.split('@')[0],
+          display_name: null,
+        }
+      : null,
+  };
+}
+
+/**
+ * Map array of Django reports to legacy format
+ * Convenience function for bulk transformations
+ * 
+ * @param reports - Array of reports from Django API
+ * @returns Array of reports in legacy Supabase format
+ */
+export function mapReportsToLegacy(reports: Report[]): LegacyReport[] {
+  return reports.map(mapReportToLegacy);
+}
+
+/**
+ * Extract username from email address
+ * Fallback for creating synthetic usernames
+ * 
+ * @param email - Email address
+ * @returns Username (part before @) or null
+ */
+export function extractUsernameFromEmail(email: string | null): string | null {
+  if (!email) return null;
+  return email.split('@')[0];
+}